./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-crafted/mapsum1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/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_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-crafted/mapsum1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/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_7de5e31b-ebf1-4367-acfb-36c21238195b/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 befec220f7e47e3c672ecda510923d232ca8d73dd5b744e98031f552117225df --- 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 12:17:47,084 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 12:17:47,085 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 12:17:47,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 12:17:47,100 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 12:17:47,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 12:17:47,102 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 12:17:47,103 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 12:17:47,104 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 12:17:47,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 12:17:47,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 12:17:47,106 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 12:17:47,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 12:17:47,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 12:17:47,108 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 12:17:47,109 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 12:17:47,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 12:17:47,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 12:17:47,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 12:17:47,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 12:17:47,118 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 12:17:47,120 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 12:17:47,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 12:17:47,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 12:17:47,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 12:17:47,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 12:17:47,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 12:17:47,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 12:17:47,125 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 12:17:47,126 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 12:17:47,126 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 12:17:47,127 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 12:17:47,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 12:17:47,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 12:17:47,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 12:17:47,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 12:17:47,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 12:17:47,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 12:17:47,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 12:17:47,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 12:17:47,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 12:17:47,132 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 12:17:47,148 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 12:17:47,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 12:17:47,149 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 12:17:47,149 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 12:17:47,150 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 12:17:47,150 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 12:17:47,150 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 12:17:47,150 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 12:17:47,150 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 12:17:47,150 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 12:17:47,151 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 12:17:47,151 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 12:17:47,151 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 12:17:47,151 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 12:17:47,151 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 12:17:47,152 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 12:17:47,152 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 12:17:47,152 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 12:17:47,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 12:17:47,153 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 12:17:47,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 12:17:47,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 12:17:47,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 12:17:47,153 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 12:17:47,153 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 12:17:47,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 12:17:47,154 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 12:17:47,154 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 12:17:47,154 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 12:17:47,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 12:17:47,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 12:17:47,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 12:17:47,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:17:47,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 12:17:47,155 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 12:17:47,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 12:17:47,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 12:17:47,156 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 12:17:47,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 12:17:47,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 12:17:47,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 12:17:47,156 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_7de5e31b-ebf1-4367-acfb-36c21238195b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> befec220f7e47e3c672ecda510923d232ca8d73dd5b744e98031f552117225df [2022-12-14 12:17:47,341 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 12:17:47,361 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 12:17:47,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 12:17:47,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 12:17:47,364 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 12:17:47,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/array-crafted/mapsum1.i [2022-12-14 12:17:49,903 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 12:17:50,050 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 12:17:50,051 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/sv-benchmarks/c/array-crafted/mapsum1.i [2022-12-14 12:17:50,055 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/data/8e84f0260/2b141ea6c2f9411e929ce40a0281ea7c/FLAG58eaff597 [2022-12-14 12:17:50,473 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/data/8e84f0260/2b141ea6c2f9411e929ce40a0281ea7c [2022-12-14 12:17:50,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 12:17:50,476 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 12:17:50,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 12:17:50,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 12:17:50,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 12:17:50,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@617baf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50, skipping insertion in model container [2022-12-14 12:17:50,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 12:17:50,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 12:17:50,599 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_7de5e31b-ebf1-4367-acfb-36c21238195b/sv-benchmarks/c/array-crafted/mapsum1.i[1300,1313] [2022-12-14 12:17:50,602 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:17:50,608 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 12:17:50,621 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_7de5e31b-ebf1-4367-acfb-36c21238195b/sv-benchmarks/c/array-crafted/mapsum1.i[1300,1313] [2022-12-14 12:17:50,622 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 12:17:50,631 INFO L208 MainTranslator]: Completed translation [2022-12-14 12:17:50,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50 WrapperNode [2022-12-14 12:17:50,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 12:17:50,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 12:17:50,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 12:17:50,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 12:17:50,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,642 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,653 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 67 [2022-12-14 12:17:50,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 12:17:50,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 12:17:50,654 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 12:17:50,654 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 12:17:50,660 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,668 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,668 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 12:17:50,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 12:17:50,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 12:17:50,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 12:17:50,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (1/1) ... [2022-12-14 12:17:50,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 12:17:50,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:17:50,692 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 12:17:50,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 12:17:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 12:17:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure mapsum [2022-12-14 12:17:50,726 INFO L138 BoogieDeclarations]: Found implementation of procedure mapsum [2022-12-14 12:17:50,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 12:17:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-14 12:17:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-14 12:17:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 12:17:50,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 12:17:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-14 12:17:50,727 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-14 12:17:50,781 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 12:17:50,782 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 12:17:50,890 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 12:17:50,913 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 12:17:50,913 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-14 12:17:50,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:17:50 BoogieIcfgContainer [2022-12-14 12:17:50,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 12:17:50,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 12:17:50,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 12:17:50,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 12:17:50,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 12:17:50" (1/3) ... [2022-12-14 12:17:50,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bad6329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:17:50, skipping insertion in model container [2022-12-14 12:17:50,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 12:17:50" (2/3) ... [2022-12-14 12:17:50,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bad6329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 12:17:50, skipping insertion in model container [2022-12-14 12:17:50,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 12:17:50" (3/3) ... [2022-12-14 12:17:50,921 INFO L112 eAbstractionObserver]: Analyzing ICFG mapsum1.i [2022-12-14 12:17:50,935 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 12:17:50,936 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 12:17:50,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 12:17:50,975 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;@7fcbb1d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 12:17:50,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 12:17:50,978 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 12:17:50,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-12-14 12:17:50,983 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:17:50,984 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:17:50,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:17:50,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:17:50,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1502913181, now seen corresponding path program 1 times [2022-12-14 12:17:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:17:51,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997726944] [2022-12-14 12:17:51,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:17:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:17:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:17:51,185 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 12:17:51,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:17:51,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997726944] [2022-12-14 12:17:51,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997726944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:17:51,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 12:17:51,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 12:17:51,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218152453] [2022-12-14 12:17:51,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:17:51,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:17:51,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:17:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:17:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 12:17:51,216 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 12:17:51,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:17:51,256 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2022-12-14 12:17:51,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:17:51,258 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 12:17:51,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:17:51,263 INFO L225 Difference]: With dead ends: 33 [2022-12-14 12:17:51,264 INFO L226 Difference]: Without dead ends: 16 [2022-12-14 12:17:51,266 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 12:17:51,268 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 12:17:51,269 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 12:17:51,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-12-14 12:17:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-12-14 12:17:51,295 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 12:17:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-12-14 12:17:51,297 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 20 [2022-12-14 12:17:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:17:51,297 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-12-14 12:17:51,297 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 12:17:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-12-14 12:17:51,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-12-14 12:17:51,298 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:17:51,298 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 12:17:51,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 12:17:51,299 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:17:51,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:17:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash -30923605, now seen corresponding path program 1 times [2022-12-14 12:17:51,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:17:51,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781644966] [2022-12-14 12:17:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:17:51,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:17:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:17:51,386 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 12:17:51,387 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:17:51,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781644966] [2022-12-14 12:17:51,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781644966] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:17:51,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639506721] [2022-12-14 12:17:51,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:17:51,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:17:51,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:17:51,389 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:17:51,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 12:17:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:17:51,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 12:17:51,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:17:51,481 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 12:17:51,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:17:51,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639506721] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:17:51,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:17:51,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 12:17:51,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806061703] [2022-12-14 12:17:51,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:17:51,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:17:51,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:17:51,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:17:51,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:17:51,485 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 12:17:51,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:17:51,505 INFO L93 Difference]: Finished difference Result 29 states and 39 transitions. [2022-12-14 12:17:51,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:17:51,506 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 12:17:51,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:17:51,506 INFO L225 Difference]: With dead ends: 29 [2022-12-14 12:17:51,507 INFO L226 Difference]: Without dead ends: 17 [2022-12-14 12:17:51,507 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 12:17:51,508 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 12:17:51,509 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 12:17:51,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-12-14 12:17:51,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-12-14 12:17:51,513 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 12:17:51,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-12-14 12:17:51,514 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 21 [2022-12-14 12:17:51,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:17:51,514 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-12-14 12:17:51,514 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 12:17:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-12-14 12:17:51,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-12-14 12:17:51,514 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:17:51,515 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 12:17:51,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 12:17:51,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:17:51,717 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:17:51,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:17:51,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2004472414, now seen corresponding path program 1 times [2022-12-14 12:17:51,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:17:51,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5631748] [2022-12-14 12:17:51,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:17:51,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:17:51,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:17:51,898 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 12:17:51,899 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:17:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5631748] [2022-12-14 12:17:51,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5631748] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:17:51,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901750544] [2022-12-14 12:17:51,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:17:51,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:17:51,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:17:51,901 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:17:51,901 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 12:17:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:17:51,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-14 12:17:51,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:17:51,980 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 12:17:51,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 12:17:51,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901750544] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 12:17:51,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 12:17:51,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-12-14 12:17:51,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231940282] [2022-12-14 12:17:51,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 12:17:51,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 12:17:51,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:17:51,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 12:17:51,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-14 12:17:51,983 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 12:17:52,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:17:52,000 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2022-12-14 12:17:52,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 12:17:52,001 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 12:17:52,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:17:52,002 INFO L225 Difference]: With dead ends: 27 [2022-12-14 12:17:52,002 INFO L226 Difference]: Without dead ends: 18 [2022-12-14 12:17:52,002 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 12:17:52,003 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 12:17:52,004 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 12:17:52,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-12-14 12:17:52,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-12-14 12:17:52,007 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 12:17:52,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2022-12-14 12:17:52,008 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 24 [2022-12-14 12:17:52,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:17:52,009 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2022-12-14 12:17:52,009 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 12:17:52,009 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2022-12-14 12:17:52,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-12-14 12:17:52,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:17:52,010 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 12:17:52,015 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 12:17:52,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:17:52,211 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:17:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:17:52,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1486085471, now seen corresponding path program 1 times [2022-12-14 12:17:52,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:17:52,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496113978] [2022-12-14 12:17:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:17:52,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:17:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:17:52,322 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 12:17:52,322 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:17:52,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496113978] [2022-12-14 12:17:52,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496113978] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:17:52,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792934418] [2022-12-14 12:17:52,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:17:52,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:17:52,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:17:52,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:17:52,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 12:17:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:17:52,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:17:52,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:17:52,415 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 12:17:52,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:17:52,439 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 12:17:52,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792934418] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:17:52,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [549368435] [2022-12-14 12:17:52,458 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:17:52,458 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:17:52,462 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:17:52,467 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:17:52,467 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:17:52,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:52,542 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:17:52,543 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 12:17:52,556 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:52,571 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:17:52,571 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 12:17:52,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:52,604 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 12:17:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:52,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:17:52,697 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:17:52,698 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 12:17:52,785 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 12:17:52,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:52,848 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 12:17:52,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:52,954 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 12:17:52,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:53,007 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 12:17:53,007 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 12:17:53,064 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 12:17:53,073 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 12:17:53,174 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:17:53,200 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:17:55,888 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '524#(and (<= |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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_5 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_5 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_5 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_5 4294967296) (- 4294967296))))) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:17:55,888 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:17:55,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:17:55,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2022-12-14 12:17:55,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571954941] [2022-12-14 12:17:55,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:17:55,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 12:17:55,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:17:55,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 12:17:55,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:17:55,891 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 12:17:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:17:55,914 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2022-12-14 12:17:55,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:17:55,914 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 12:17:55,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:17:55,915 INFO L225 Difference]: With dead ends: 36 [2022-12-14 12:17:55,915 INFO L226 Difference]: Without dead ends: 21 [2022-12-14 12:17:55,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:17:55,916 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 12:17:55,917 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 12:17:55,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-12-14 12:17:55,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-12-14 12:17:55,920 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 12:17:55,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2022-12-14 12:17:55,920 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 25 [2022-12-14 12:17:55,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:17:55,921 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2022-12-14 12:17:55,921 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 12:17:55,921 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2022-12-14 12:17:55,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-12-14 12:17:55,922 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:17:55,922 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 12:17:55,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 12:17:56,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:17:56,123 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:17:56,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:17:56,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1511168559, now seen corresponding path program 2 times [2022-12-14 12:17:56,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:17:56,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1794315862] [2022-12-14 12:17:56,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:17:56,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:17:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:17:56,288 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 12:17:56,288 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:17:56,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1794315862] [2022-12-14 12:17:56,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1794315862] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:17:56,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619790579] [2022-12-14 12:17:56,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:17:56,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:17:56,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:17:56,290 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:17:56,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 12:17:56,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-14 12:17:56,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:17:56,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 12:17:56,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:17:56,352 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 12:17:56,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:17:56,371 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 12:17:56,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619790579] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:17:56,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1826142735] [2022-12-14 12:17:56,374 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:17:56,374 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:17:56,374 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:17:56,375 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:17:56,375 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:17:56,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:56,400 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:17:56,401 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 12:17:56,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:56,409 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 12:17:56,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:56,426 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 12:17:56,466 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:56,468 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:56,479 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 12:17:56,479 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 12:17:56,504 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 12:17:56,541 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:56,542 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 12:17:56,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:56,613 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:17:56,613 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 12:17:56,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:17:56,644 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:17:56,644 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 12:17:56,671 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 12:17:56,682 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 12:17:56,758 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:17:56,779 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:01,465 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '797#(and (<= 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_mapsum_~ret~0_BEFORE_RETURN_12 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_12 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_12 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_12 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2022-12-14 12:18:01,465 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:01,465 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:01,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-12-14 12:18:01,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452227577] [2022-12-14 12:18:01,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:01,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 12:18:01,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:01,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 12:18:01,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:18:01,466 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 12:18:01,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:01,483 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2022-12-14 12:18:01,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 12:18:01,484 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 12:18:01,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:01,484 INFO L225 Difference]: With dead ends: 38 [2022-12-14 12:18:01,484 INFO L226 Difference]: Without dead ends: 24 [2022-12-14 12:18:01,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-12-14 12:18:01,485 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 12:18:01,485 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 12:18:01,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-12-14 12:18:01,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-12-14 12:18:01,488 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 12:18:01,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-12-14 12:18:01,488 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 28 [2022-12-14 12:18:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:01,488 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-12-14 12:18:01,489 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 12:18:01,489 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-12-14 12:18:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-12-14 12:18:01,489 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:01,489 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 12:18:01,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 12:18:01,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:01,691 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:01,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:01,693 INFO L85 PathProgramCache]: Analyzing trace with hash 337466232, now seen corresponding path program 3 times [2022-12-14 12:18:01,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:01,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263240156] [2022-12-14 12:18:01,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:01,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:01,785 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 12:18:01,785 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:01,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263240156] [2022-12-14 12:18:01,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263240156] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:01,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1119265943] [2022-12-14 12:18:01,786 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:18:01,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:01,786 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:01,787 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:01,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 12:18:01,853 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:18:01,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:18:01,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:18:01,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:18:01,886 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 12:18:01,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:01,937 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-12-14 12:18:01,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1119265943] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:01,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [7868802] [2022-12-14 12:18:01,940 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:18:01,940 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:01,941 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:01,941 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:01,941 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:01,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:01,965 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:18:01,965 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 12:18:01,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:01,974 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 12:18:01,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:01,988 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 12:18:02,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:02,028 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:02,048 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:18:02,048 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 12:18:02,109 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 12:18:02,148 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:02,149 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 12:18:02,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:02,213 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:02,214 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 12:18:02,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:02,246 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:18:02,246 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 12:18:02,272 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 12:18:02,292 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 12:18:02,367 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:18:02,386 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:07,027 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1141#(and (<= |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)) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_18 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_18 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:18:07,027 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:07,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:07,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 7] total 14 [2022-12-14 12:18:07,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776964910] [2022-12-14 12:18:07,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:07,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-14 12:18:07,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:07,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-14 12:18:07,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-12-14 12:18:07,029 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 12:18:07,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:07,055 INFO L93 Difference]: Finished difference Result 49 states and 63 transitions. [2022-12-14 12:18:07,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 12:18:07,056 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 37 [2022-12-14 12:18:07,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:07,056 INFO L225 Difference]: With dead ends: 49 [2022-12-14 12:18:07,056 INFO L226 Difference]: Without dead ends: 31 [2022-12-14 12:18:07,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2022-12-14 12:18:07,057 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:18:07,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:18:07,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-12-14 12:18:07,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2022-12-14 12:18:07,059 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 12:18:07,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2022-12-14 12:18:07,060 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 37 [2022-12-14 12:18:07,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:07,060 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2022-12-14 12:18:07,060 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, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-14 12:18:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2022-12-14 12:18:07,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-12-14 12:18:07,061 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:07,061 INFO L195 NwaCegarLoop]: trace histogram [12, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:18:07,065 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 12:18:07,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 12:18:07,263 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:07,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:07,264 INFO L85 PathProgramCache]: Analyzing trace with hash -939132675, now seen corresponding path program 4 times [2022-12-14 12:18:07,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:07,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624029085] [2022-12-14 12:18:07,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:07,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:07,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:07,484 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 12:18:07,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:07,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624029085] [2022-12-14 12:18:07,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624029085] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:07,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548506856] [2022-12-14 12:18:07,485 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:18:07,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:07,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:07,486 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:07,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 12:18:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:07,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:18:07,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:18:07,590 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 12:18:07,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 12:18:07,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1548506856] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:07,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1066010517] [2022-12-14 12:18:07,742 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:18:07,742 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:07,742 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:07,742 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:07,742 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:07,753 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:07,765 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:18:07,765 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 12:18:07,772 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:07,773 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 12:18:07,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:07,786 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 12:18:07,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:07,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:07,833 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 12:18:07,834 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 12:18:07,863 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 12:18:07,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:07,913 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 12:18:07,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:07,982 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:07,983 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 12:18:08,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:08,015 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:18:08,015 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 12:18:08,038 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 12:18:08,047 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 12:18:08,125 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:18:08,148 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:10,841 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1574#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_24 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_24 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_24 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_24 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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:18:10,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:10,842 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:10,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 13] total 25 [2022-12-14 12:18:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165673174] [2022-12-14 12:18:10,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:10,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-14 12:18:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:10,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-14 12:18:10,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 12:18:10,844 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 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 12:18:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:10,876 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2022-12-14 12:18:10,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-14 12:18:10,876 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 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 44 [2022-12-14 12:18:10,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:10,877 INFO L225 Difference]: With dead ends: 62 [2022-12-14 12:18:10,877 INFO L226 Difference]: Without dead ends: 43 [2022-12-14 12:18:10,877 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=360, Invalid=1046, Unknown=0, NotChecked=0, Total=1406 [2022-12-14 12:18:10,878 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:18:10,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:18:10,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-12-14 12:18:10,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-12-14 12:18:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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 12:18:10,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2022-12-14 12:18:10,881 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 44 [2022-12-14 12:18:10,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:10,881 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2022-12-14 12:18:10,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 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 12:18:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2022-12-14 12:18:10,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-14 12:18:10,882 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:10,882 INFO L195 NwaCegarLoop]: trace histogram [22, 12, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:18:10,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-14 12:18:11,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:11,083 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:11,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:11,084 INFO L85 PathProgramCache]: Analyzing trace with hash -828214403, now seen corresponding path program 5 times [2022-12-14 12:18:11,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:11,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362930800] [2022-12-14 12:18:11,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:11,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:11,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:11,504 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-12-14 12:18:11,504 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:11,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362930800] [2022-12-14 12:18:11,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362930800] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:11,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1457674198] [2022-12-14 12:18:11,505 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:18:11,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:11,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:11,506 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:11,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 12:18:11,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 12:18:11,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:18:11,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 12:18:11,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:18:11,630 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-14 12:18:11,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 52 proven. 10 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2022-12-14 12:18:11,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1457674198] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:11,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1299644759] [2022-12-14 12:18:11,700 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:18:11,700 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:11,700 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:11,700 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:11,700 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:11,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:11,720 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:18:11,720 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 12:18:11,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:11,726 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 12:18:11,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:11,740 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 12:18:11,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:11,768 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:11,778 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 12:18:11,778 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 12:18:11,805 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 12:18:11,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:11,846 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 12:18:11,900 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:11,901 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 25 treesize of output 20 [2022-12-14 12:18:11,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:11,938 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 12:18:11,938 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 12:18:11,974 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 12:18:11,983 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 12:18:12,056 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:18:12,077 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:17,040 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2139#(and (<= |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)) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_30 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_30 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_30 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_30 4294967296) (- 4294967296))))) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:18:17,040 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:17,041 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:17,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 35 [2022-12-14 12:18:17,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966953337] [2022-12-14 12:18:17,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:17,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-14 12:18:17,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:17,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-14 12:18:17,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 12:18:17,043 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 12:18:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:17,097 INFO L93 Difference]: Finished difference Result 69 states and 86 transitions. [2022-12-14 12:18:17,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-12-14 12:18:17,097 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 56 [2022-12-14 12:18:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:17,098 INFO L225 Difference]: With dead ends: 69 [2022-12-14 12:18:17,098 INFO L226 Difference]: Without dead ends: 50 [2022-12-14 12:18:17,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 710 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=425, Invalid=1831, Unknown=0, NotChecked=0, Total=2256 [2022-12-14 12:18:17,099 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:18:17,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 106 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:18:17,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-12-14 12:18:17,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2022-12-14 12:18:17,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 45 states have (on average 1.0666666666666667) internal successors, (48), 45 states have internal predecessors, (48), 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 12:18:17,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2022-12-14 12:18:17,105 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 56 [2022-12-14 12:18:17,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:17,105 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2022-12-14 12:18:17,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 1.5142857142857142) internal successors, (53), 35 states have internal predecessors, (53), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 12:18:17,106 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2022-12-14 12:18:17,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-12-14 12:18:17,106 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:17,107 INFO L195 NwaCegarLoop]: trace histogram [30, 23, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:18:17,111 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 12:18:17,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:17,308 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:17,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:17,310 INFO L85 PathProgramCache]: Analyzing trace with hash 2050157163, now seen corresponding path program 6 times [2022-12-14 12:18:17,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:17,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792743161] [2022-12-14 12:18:17,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:17,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:17,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:17,876 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 12:18:17,876 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:17,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792743161] [2022-12-14 12:18:17,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792743161] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:17,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529655125] [2022-12-14 12:18:17,876 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:18:17,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:17,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:17,877 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:17,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 12:18:17,962 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:18:17,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:18:17,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-14 12:18:17,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:18:17,997 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 12:18:17,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:18,497 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 12:18:18,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529655125] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:18,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1203043324] [2022-12-14 12:18:18,500 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:18:18,500 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:18,500 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:18,500 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:18,500 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:18,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:18,518 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:18:18,518 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 12:18:18,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:18,525 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 12:18:18,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:18,537 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 12:18:18,562 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:18,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:18,573 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 12:18:18,573 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 12:18:18,598 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 12:18:18,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:18,631 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 12:18:18,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:18,697 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 12:18:18,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:18,733 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-12-14 12:18:18,734 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 85 [2022-12-14 12:18:18,766 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 12:18:18,774 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 12:18:18,843 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:18:18,867 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:19,637 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2862#(and (exists ((v_mapsum_~ret~0_BEFORE_RETURN_35 Int)) (= (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_35 4294967296))) |ULTIMATE.start_main_~ret5~0#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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:18:19,637 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:19,637 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:19,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 26] total 51 [2022-12-14 12:18:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900565288] [2022-12-14 12:18:19,637 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:19,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-12-14 12:18:19,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:19,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-12-14 12:18:19,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 12:18:19,641 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 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 12:18:19,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:19,702 INFO L93 Difference]: Finished difference Result 100 states and 132 transitions. [2022-12-14 12:18:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-14 12:18:19,702 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 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 75 [2022-12-14 12:18:19,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:19,703 INFO L225 Difference]: With dead ends: 100 [2022-12-14 12:18:19,703 INFO L226 Difference]: Without dead ends: 75 [2022-12-14 12:18:19,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1063 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1335, Invalid=2697, Unknown=0, NotChecked=0, Total=4032 [2022-12-14 12:18:19,704 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:18:19,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 84 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:18:19,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2022-12-14 12:18:19,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2022-12-14 12:18:19,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 70 states have (on average 1.042857142857143) internal successors, (73), 70 states have internal predecessors, (73), 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 12:18:19,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2022-12-14 12:18:19,709 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 75 [2022-12-14 12:18:19,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:19,709 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2022-12-14 12:18:19,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 51 states have internal predecessors, (65), 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 12:18:19,709 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2022-12-14 12:18:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 12:18:19,710 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:19,710 INFO L195 NwaCegarLoop]: trace histogram [48, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:18:19,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-14 12:18:19,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:19,911 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:19,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:19,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1594811805, now seen corresponding path program 7 times [2022-12-14 12:18:19,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:19,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482794556] [2022-12-14 12:18:19,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:19,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:21,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 12:18:21,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:21,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482794556] [2022-12-14 12:18:21,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482794556] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:21,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501839063] [2022-12-14 12:18:21,506 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:18:21,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:21,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:21,507 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:21,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-14 12:18:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:21,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 720 conjuncts, 50 conjunts are in the unsatisfiable core [2022-12-14 12:18:21,633 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:18:21,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 12:18:21,695 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:23,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1713 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 12:18:23,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501839063] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:23,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [278714343] [2022-12-14 12:18:23,616 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:18:23,616 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:23,616 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:23,616 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:23,616 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:23,624 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:23,637 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:18:23,637 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 12:18:23,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:23,642 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 12:18:23,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:23,658 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 12:18:23,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:23,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:23,705 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:18:23,706 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 12:18:23,752 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 12:18:23,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:23,788 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 12:18:23,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:23,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:23,846 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 12:18:23,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:23,873 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:18:23,874 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 12:18:23,893 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 12:18:23,912 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 12:18:23,984 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:18:24,004 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:31,124 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3897#(and (<= |ULTIMATE.start_main_~ret2~0#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_41 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_41 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_41 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_41 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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:18:31,124 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:31,124 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:31,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 50, 51] total 101 [2022-12-14 12:18:31,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609900951] [2022-12-14 12:18:31,124 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:31,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2022-12-14 12:18:31,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:31,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2022-12-14 12:18:31,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-12-14 12:18:31,129 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 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 12:18:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:31,261 INFO L93 Difference]: Finished difference Result 150 states and 207 transitions. [2022-12-14 12:18:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2022-12-14 12:18:31,261 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 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 100 [2022-12-14 12:18:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:31,263 INFO L225 Difference]: With dead ends: 150 [2022-12-14 12:18:31,263 INFO L226 Difference]: Without dead ends: 125 [2022-12-14 12:18:31,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2138 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=5110, Invalid=7772, Unknown=0, NotChecked=0, Total=12882 [2022-12-14 12:18:31,268 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:18:31,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:18:31,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-12-14 12:18:31,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-12-14 12:18:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 120 states have (on average 1.025) internal successors, (123), 120 states have internal predecessors, (123), 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 12:18:31,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 129 transitions. [2022-12-14 12:18:31,274 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 129 transitions. Word has length 100 [2022-12-14 12:18:31,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:31,274 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 129 transitions. [2022-12-14 12:18:31,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.1386138613861385) internal successors, (115), 101 states have internal predecessors, (115), 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 12:18:31,275 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 129 transitions. [2022-12-14 12:18:31,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-12-14 12:18:31,276 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:31,276 INFO L195 NwaCegarLoop]: trace histogram [98, 30, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:18:31,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-14 12:18:31,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 12:18:31,477 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:31,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:31,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1996001629, now seen corresponding path program 8 times [2022-12-14 12:18:31,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:31,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954049183] [2022-12-14 12:18:31,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:31,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:31,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:35,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 537 trivial. 0 not checked. [2022-12-14 12:18:35,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:35,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954049183] [2022-12-14 12:18:35,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954049183] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:35,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097972672] [2022-12-14 12:18:35,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:18:35,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:35,765 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:35,765 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:35,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-14 12:18:35,894 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 12:18:35,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:18:35,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 12:18:35,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:18:35,972 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 246 proven. 3 refuted. 0 times theorem prover too weak. 5139 trivial. 0 not checked. [2022-12-14 12:18:35,972 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:36,054 INFO L134 CoverageAnalysis]: Checked inductivity of 5388 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 5385 trivial. 0 not checked. [2022-12-14 12:18:36,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097972672] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:36,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1658501127] [2022-12-14 12:18:36,056 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:18:36,056 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:36,056 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:36,056 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:36,057 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:36,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:36,074 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:18:36,074 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 12:18:36,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:36,080 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 12:18:36,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:36,091 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 12:18:36,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:36,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:36,131 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 12:18:36,131 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 12:18:36,153 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 12:18:36,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:36,181 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 12:18:36,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:36,228 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:36,229 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 12:18:36,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:36,253 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:18:36,253 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 12:18:36,270 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 12:18:36,279 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 12:18:36,342 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:18:36,358 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:39,997 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5438#(and (exists ((v_mapsum_~ret~0_BEFORE_RETURN_47 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_47 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_47 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_47 4294967296))))) (<= |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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:18:39,997 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:39,997 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:39,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 5, 5] total 107 [2022-12-14 12:18:39,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388473683] [2022-12-14 12:18:39,998 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:39,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 107 states [2022-12-14 12:18:39,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:40,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2022-12-14 12:18:40,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2022-12-14 12:18:40,005 INFO L87 Difference]: Start difference. First operand 125 states and 129 transitions. Second operand has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 12:18:40,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:40,126 INFO L93 Difference]: Finished difference Result 155 states and 167 transitions. [2022-12-14 12:18:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 107 states. [2022-12-14 12:18:40,127 INFO L78 Accepts]: Start accepts. Automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 150 [2022-12-14 12:18:40,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:40,127 INFO L225 Difference]: With dead ends: 155 [2022-12-14 12:18:40,127 INFO L226 Difference]: Without dead ends: 130 [2022-12-14 12:18:40,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 549 GetRequests, 431 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1988 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5137, Invalid=9143, Unknown=0, NotChecked=0, Total=14280 [2022-12-14 12:18:40,130 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:18:40,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:18:40,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-12-14 12:18:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2022-12-14 12:18:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 125 states have (on average 1.024) internal successors, (128), 125 states have internal predecessors, (128), 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 12:18:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 134 transitions. [2022-12-14 12:18:40,136 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 134 transitions. Word has length 150 [2022-12-14 12:18:40,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:40,136 INFO L495 AbstractCegarLoop]: Abstraction has 130 states and 134 transitions. [2022-12-14 12:18:40,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 107 states, 107 states have (on average 1.1682242990654206) internal successors, (125), 107 states have internal predecessors, (125), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 12:18:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 134 transitions. [2022-12-14 12:18:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-12-14 12:18:40,138 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:40,138 INFO L195 NwaCegarLoop]: trace histogram [99, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:18:40,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-14 12:18:40,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-12-14 12:18:40,339 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:40,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:40,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1617600427, now seen corresponding path program 9 times [2022-12-14 12:18:40,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:40,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726560515] [2022-12-14 12:18:40,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:40,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:44,370 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 12:18:44,370 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:44,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726560515] [2022-12-14 12:18:44,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726560515] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:44,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712479693] [2022-12-14 12:18:44,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:18:44,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:44,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:44,371 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:44,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-14 12:18:44,584 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:18:44,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:18:44,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 1207 conjuncts, 101 conjunts are in the unsatisfiable core [2022-12-14 12:18:44,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:18:44,715 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 12:18:44,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:47,386 INFO L134 CoverageAnalysis]: Checked inductivity of 5505 backedges. 0 proven. 4950 refuted. 0 times theorem prover too weak. 555 trivial. 0 not checked. [2022-12-14 12:18:47,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712479693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:47,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1807908035] [2022-12-14 12:18:47,387 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:18:47,387 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:47,387 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:47,387 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:47,388 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:47,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:47,402 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:18:47,402 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 12:18:47,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:47,417 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:18:47,417 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 12:18:47,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:47,430 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 12:18:47,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:47,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:47,464 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 12:18:47,464 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 12:18:47,491 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 12:18:47,525 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:47,526 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 12:18:47,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:47,582 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:47,583 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 12:18:47,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:47,614 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:18:47,614 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 12:18:47,630 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 12:18:47,640 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 12:18:47,706 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:18:47,727 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:53,086 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '7025#(and (<= |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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_54 Int)) (= (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296) (+ (- 4294967296) (mod v_mapsum_~ret~0_BEFORE_RETURN_54 4294967296))) |ULTIMATE.start_main_~ret5~0#1|)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:18:53,087 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:53,087 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:53,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [102, 101, 102] total 103 [2022-12-14 12:18:53,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728565879] [2022-12-14 12:18:53,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:53,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-12-14 12:18:53,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:53,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-12-14 12:18:53,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2022-12-14 12:18:53,090 INFO L87 Difference]: Start difference. First operand 130 states and 134 transitions. Second operand has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 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 12:18:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:53,179 INFO L93 Difference]: Finished difference Result 160 states and 168 transitions. [2022-12-14 12:18:53,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-12-14 12:18:53,179 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 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 155 [2022-12-14 12:18:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:53,180 INFO L225 Difference]: With dead ends: 160 [2022-12-14 12:18:53,180 INFO L226 Difference]: Without dead ends: 131 [2022-12-14 12:18:53,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 351 SyntacticMatches, 100 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6788 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=5313, Invalid=8027, Unknown=0, NotChecked=0, Total=13340 [2022-12-14 12:18:53,182 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:18:53,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:18:53,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-12-14 12:18:53,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-12-14 12:18:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 126 states have (on average 1.0238095238095237) internal successors, (129), 126 states have internal predecessors, (129), 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 12:18:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 135 transitions. [2022-12-14 12:18:53,187 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 135 transitions. Word has length 155 [2022-12-14 12:18:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:53,188 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 135 transitions. [2022-12-14 12:18:53,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 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 12:18:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 135 transitions. [2022-12-14 12:18:53,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-12-14 12:18:53,189 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:53,189 INFO L195 NwaCegarLoop]: trace histogram [100, 30, 6, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:18:53,194 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-12-14 12:18:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:53,390 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:53,391 INFO L85 PathProgramCache]: Analyzing trace with hash -440651299, now seen corresponding path program 10 times [2022-12-14 12:18:53,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:53,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257180065] [2022-12-14 12:18:53,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:53,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:53,675 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 5584 trivial. 0 not checked. [2022-12-14 12:18:53,675 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:53,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257180065] [2022-12-14 12:18:53,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257180065] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:53,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1175393351] [2022-12-14 12:18:53,675 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:18:53,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:53,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:53,676 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:53,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-14 12:18:53,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:53,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 1216 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-14 12:18:53,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:18:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 244 proven. 55 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-12-14 12:18:54,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:18:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 5605 backedges. 0 proven. 299 refuted. 0 times theorem prover too weak. 5306 trivial. 0 not checked. [2022-12-14 12:18:54,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1175393351] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:18:54,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1385091357] [2022-12-14 12:18:54,196 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:18:54,196 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:18:54,196 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:18:54,196 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:18:54,196 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:18:54,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:54,209 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:18:54,209 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 12:18:54,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:54,224 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:18:54,225 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 12:18:54,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:54,239 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 12:18:54,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:54,270 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:54,286 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:18:54,286 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 12:18:54,321 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 12:18:54,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:54,351 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 12:18:54,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:54,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:18:54,410 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 12:18:54,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:18:54,435 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:18:54,436 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 12:18:54,461 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 12:18:54,472 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 12:18:54,557 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:18:54,579 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:18:59,376 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8558#(and (exists ((v_mapsum_~ret~0_BEFORE_RETURN_60 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_60 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_60 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_60 4294967296) (- 4294967296))))) (<= |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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:18:59,376 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:18:59,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:18:59,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 31 [2022-12-14 12:18:59,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618041693] [2022-12-14 12:18:59,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:18:59,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-12-14 12:18:59,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:18:59,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-12-14 12:18:59,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 12:18:59,378 INFO L87 Difference]: Start difference. First operand 131 states and 135 transitions. Second operand has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 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 12:18:59,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:18:59,416 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2022-12-14 12:18:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-14 12:18:59,417 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 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 156 [2022-12-14 12:18:59,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:18:59,418 INFO L225 Difference]: With dead ends: 172 [2022-12-14 12:18:59,418 INFO L226 Difference]: Without dead ends: 144 [2022-12-14 12:18:59,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 475 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 648 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=371, Invalid=1521, Unknown=0, NotChecked=0, Total=1892 [2022-12-14 12:18:59,419 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:18:59,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:18:59,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-12-14 12:18:59,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2022-12-14 12:18:59,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 139 states have (on average 1.0215827338129497) internal successors, (142), 139 states have internal predecessors, (142), 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 12:18:59,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 148 transitions. [2022-12-14 12:18:59,425 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 148 transitions. Word has length 156 [2022-12-14 12:18:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:18:59,425 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 148 transitions. [2022-12-14 12:18:59,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 31 states have internal predecessors, (49), 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 12:18:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 148 transitions. [2022-12-14 12:18:59,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-12-14 12:18:59,426 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:18:59,426 INFO L195 NwaCegarLoop]: trace histogram [100, 66, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:18:59,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-12-14 12:18:59,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:59,628 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:18:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:18:59,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1100518344, now seen corresponding path program 11 times [2022-12-14 12:18:59,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:18:59,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617609613] [2022-12-14 12:18:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:18:59,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:18:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:18:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-12-14 12:18:59,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:18:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617609613] [2022-12-14 12:18:59,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617609613] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:18:59,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093276757] [2022-12-14 12:18:59,973 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:18:59,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:18:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:18:59,974 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:18:59,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-14 12:19:00,459 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-12-14 12:19:00,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:19:00,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 12:19:00,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:19:00,480 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 1062 proven. 28 refuted. 0 times theorem prover too weak. 6340 trivial. 0 not checked. [2022-12-14 12:19:00,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:19:00,542 INFO L134 CoverageAnalysis]: Checked inductivity of 7430 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-12-14 12:19:00,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093276757] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:19:00,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1912910012] [2022-12-14 12:19:00,543 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:19:00,543 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:19:00,543 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:19:00,543 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:19:00,543 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:19:00,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:00,559 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:19:00,559 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 12:19:00,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:00,577 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:19:00,578 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 12:19:00,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:00,592 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 12:19:00,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:00,626 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:19:00,644 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:19:00,644 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 12:19:00,693 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 12:19:00,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:00,724 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 12:19:00,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:00,780 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 12:19:00,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:00,816 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 12:19:00,816 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 12:19:00,846 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 12:19:00,856 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 12:19:00,928 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:19:00,948 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:19:03,731 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '10351#(and (<= |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) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:19:03,731 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:19:03,731 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:19:03,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-12-14 12:19:03,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942987320] [2022-12-14 12:19:03,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:19:03,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 12:19:03,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:19:03,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 12:19:03,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2022-12-14 12:19:03,732 INFO L87 Difference]: Start difference. First operand 144 states and 148 transitions. Second operand has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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 12:19:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:19:03,763 INFO L93 Difference]: Finished difference Result 183 states and 196 transitions. [2022-12-14 12:19:03,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 12:19:03,763 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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 193 [2022-12-14 12:19:03,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:19:03,764 INFO L225 Difference]: With dead ends: 183 [2022-12-14 12:19:03,764 INFO L226 Difference]: Without dead ends: 153 [2022-12-14 12:19:03,764 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 557 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=231, Invalid=761, Unknown=0, NotChecked=0, Total=992 [2022-12-14 12:19:03,765 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:19:03,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:19:03,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-12-14 12:19:03,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2022-12-14 12:19:03,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 148 states have (on average 1.0202702702702702) internal successors, (151), 148 states have internal predecessors, (151), 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 12:19:03,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 157 transitions. [2022-12-14 12:19:03,770 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 157 transitions. Word has length 193 [2022-12-14 12:19:03,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:19:03,770 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 157 transitions. [2022-12-14 12:19:03,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.736842105263158) internal successors, (33), 19 states have internal predecessors, (33), 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 12:19:03,771 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 157 transitions. [2022-12-14 12:19:03,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-12-14 12:19:03,772 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:19:03,772 INFO L195 NwaCegarLoop]: trace histogram [100, 66, 16, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:19:03,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-14 12:19:03,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-14 12:19:03,973 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:19:03,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:19:03,974 INFO L85 PathProgramCache]: Analyzing trace with hash -1897811587, now seen corresponding path program 12 times [2022-12-14 12:19:03,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:19:03,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726985679] [2022-12-14 12:19:03,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:19:03,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:19:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:19:04,494 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 7402 trivial. 0 not checked. [2022-12-14 12:19:04,495 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:19:04,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726985679] [2022-12-14 12:19:04,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726985679] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:19:04,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792103390] [2022-12-14 12:19:04,495 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:19:04,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:19:04,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:19:04,496 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:19:04,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-14 12:19:04,742 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:19:04,742 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:19:04,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-14 12:19:04,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:19:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 1060 proven. 253 refuted. 0 times theorem prover too weak. 6225 trivial. 0 not checked. [2022-12-14 12:19:04,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:19:05,489 INFO L134 CoverageAnalysis]: Checked inductivity of 7538 backedges. 0 proven. 1313 refuted. 0 times theorem prover too weak. 6225 trivial. 0 not checked. [2022-12-14 12:19:05,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792103390] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:19:05,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [85945615] [2022-12-14 12:19:05,490 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:19:05,490 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:19:05,490 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:19:05,490 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:19:05,491 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:19:05,497 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:05,505 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:19:05,505 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 12:19:05,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:05,520 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:19:05,520 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 12:19:05,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:05,541 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 12:19:05,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:05,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:19:05,580 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:19:05,581 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 12:19:05,615 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 12:19:05,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:05,647 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 12:19:05,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:05,701 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 12:19:05,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:05,731 INFO L321 Elim1Store]: treesize reduction 40, result has 42.0 percent of original size [2022-12-14 12:19:05,731 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 85 [2022-12-14 12:19:05,759 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 12:19:05,766 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 12:19:05,832 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:19:05,857 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:19:14,324 WARN L233 SmtUtils]: Spent 8.06s on a formula simplification. DAG size of input: 53 DAG size of output: 36 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 12:19:18,765 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '12286#(and (<= |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) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:19:18,765 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:19:18,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:19:18,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 25] total 65 [2022-12-14 12:19:18,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421319722] [2022-12-14 12:19:18,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:19:18,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-12-14 12:19:18,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:19:18,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-12-14 12:19:18,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1357, Invalid=4648, Unknown=1, NotChecked=0, Total=6006 [2022-12-14 12:19:18,767 INFO L87 Difference]: Start difference. First operand 153 states and 157 transitions. Second operand has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 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 12:19:18,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:19:18,830 INFO L93 Difference]: Finished difference Result 228 states and 262 transitions. [2022-12-14 12:19:18,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-12-14 12:19:18,830 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 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 202 [2022-12-14 12:19:18,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:19:18,831 INFO L225 Difference]: With dead ends: 228 [2022-12-14 12:19:18,831 INFO L226 Difference]: Without dead ends: 178 [2022-12-14 12:19:18,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 547 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1850 ImplicationChecksByTransitivity, 13.7s TimeCoverageRelationStatistics Valid=1357, Invalid=4648, Unknown=1, NotChecked=0, Total=6006 [2022-12-14 12:19:18,832 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:19:18,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:19:18,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-12-14 12:19:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-12-14 12:19:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 173 states have (on average 1.0173410404624277) internal successors, (176), 173 states have internal predecessors, (176), 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 12:19:18,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 182 transitions. [2022-12-14 12:19:18,838 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 182 transitions. Word has length 202 [2022-12-14 12:19:18,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:19:18,838 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 182 transitions. [2022-12-14 12:19:18,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 1.2769230769230768) internal successors, (83), 65 states have internal predecessors, (83), 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 12:19:18,838 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 182 transitions. [2022-12-14 12:19:18,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-12-14 12:19:18,839 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:19:18,840 INFO L195 NwaCegarLoop]: trace histogram [138, 100, 17, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:19:18,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-14 12:19:19,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:19:19,041 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:19:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:19:19,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1296943656, now seen corresponding path program 13 times [2022-12-14 12:19:19,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:19:19,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421070462] [2022-12-14 12:19:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:19:19,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:19:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:19:19,782 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 14926 trivial. 0 not checked. [2022-12-14 12:19:19,782 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:19:19,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421070462] [2022-12-14 12:19:19,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421070462] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:19:19,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463762196] [2022-12-14 12:19:19,782 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:19:19,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:19:19,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:19:19,783 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:19:19,784 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-14 12:19:20,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:19:20,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 48 conjunts are in the unsatisfiable core [2022-12-14 12:19:20,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:19:21,100 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 4420 proven. 1081 refuted. 0 times theorem prover too weak. 9578 trivial. 0 not checked. [2022-12-14 12:19:21,101 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:19:23,202 INFO L134 CoverageAnalysis]: Checked inductivity of 15079 backedges. 0 proven. 5501 refuted. 0 times theorem prover too weak. 9578 trivial. 0 not checked. [2022-12-14 12:19:23,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463762196] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:19:23,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1245262907] [2022-12-14 12:19:23,203 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:19:23,203 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:19:23,203 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:19:23,203 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:19:23,203 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:19:23,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:23,219 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:19:23,219 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 12:19:23,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:23,225 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 12:19:23,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:23,236 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 12:19:23,260 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:23,260 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:19:23,274 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:19:23,275 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 12:19:23,317 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 12:19:23,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:23,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 20 [2022-12-14 12:19:23,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:23,421 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 12:19:23,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:23,454 INFO L321 Elim1Store]: treesize reduction 45, result has 34.8 percent of original size [2022-12-14 12:19:23,455 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 12:19:23,490 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 12:19:23,495 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 12:19:23,551 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:19:23,567 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:19:24,702 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14846#(and (<= |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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_77 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_77 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_77 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_77 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:19:24,703 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:19:24,703 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:19:24,703 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 49, 49] total 114 [2022-12-14 12:19:24,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273498242] [2022-12-14 12:19:24,703 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:19:24,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 114 states [2022-12-14 12:19:24,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:19:24,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants. [2022-12-14 12:19:24,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4809, Invalid=11193, Unknown=0, NotChecked=0, Total=16002 [2022-12-14 12:19:24,706 INFO L87 Difference]: Start difference. First operand 178 states and 182 transitions. Second operand has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 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 12:19:24,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:19:24,832 INFO L93 Difference]: Finished difference Result 302 states and 360 transitions. [2022-12-14 12:19:24,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2022-12-14 12:19:24,833 INFO L78 Accepts]: Start accepts. Automaton has has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 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 275 [2022-12-14 12:19:24,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:19:24,835 INFO L225 Difference]: With dead ends: 302 [2022-12-14 12:19:24,835 INFO L226 Difference]: Without dead ends: 227 [2022-12-14 12:19:24,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 718 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3661 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=4809, Invalid=11193, Unknown=0, NotChecked=0, Total=16002 [2022-12-14 12:19:24,836 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:19:24,836 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 133 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:19:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-12-14 12:19:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2022-12-14 12:19:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 222 states have (on average 1.0135135135135136) internal successors, (225), 222 states have internal predecessors, (225), 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 12:19:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 231 transitions. [2022-12-14 12:19:24,843 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 231 transitions. Word has length 275 [2022-12-14 12:19:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:19:24,843 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 231 transitions. [2022-12-14 12:19:24,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 114 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 114 states have internal predecessors, (132), 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 12:19:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 231 transitions. [2022-12-14 12:19:24,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2022-12-14 12:19:24,845 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:19:24,845 INFO L195 NwaCegarLoop]: trace histogram [282, 100, 18, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:19:24,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2022-12-14 12:19:25,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-14 12:19:25,047 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:19:25,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:19:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash -811506339, now seen corresponding path program 14 times [2022-12-14 12:19:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:19:25,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244529488] [2022-12-14 12:19:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:19:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:19:25,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:19:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-12-14 12:19:26,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:19:26,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244529488] [2022-12-14 12:19:26,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244529488] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:19:26,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855376204] [2022-12-14 12:19:26,018 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:19:26,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:19:26,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:19:26,019 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:19:26,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-12-14 12:19:29,843 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-14 12:19:29,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:19:29,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 589 conjuncts, 39 conjunts are in the unsatisfiable core [2022-12-14 12:19:29,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:19:29,887 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 18054 proven. 171 refuted. 0 times theorem prover too weak. 27472 trivial. 0 not checked. [2022-12-14 12:19:29,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:19:30,213 INFO L134 CoverageAnalysis]: Checked inductivity of 45697 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-12-14 12:19:30,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855376204] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:19:30,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2005406932] [2022-12-14 12:19:30,215 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:19:30,215 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:19:30,215 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:19:30,216 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:19:30,216 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:19:30,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:30,230 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:19:30,230 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 12:19:30,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:30,245 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:19:30,245 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 12:19:30,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:30,256 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 12:19:30,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:30,280 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:19:30,294 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:19:30,294 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 12:19:30,338 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 12:19:30,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:30,373 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 12:19:30,425 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:30,426 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:19:30,426 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 12:19:30,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:30,452 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:19:30,452 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 12:19:30,469 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 12:19:30,482 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 12:19:30,546 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:19:30,563 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:19:33,323 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '18449#(and (<= 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) (<= 0 (+ |ULTIMATE.start_main_~ret5~0#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= |#NULL.base| 0) (<= |ULTIMATE.start_main_~ret5~0#1| 2147483647) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|))' at error location [2022-12-14 12:19:33,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:19:33,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:19:33,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21, 21] total 41 [2022-12-14 12:19:33,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159544043] [2022-12-14 12:19:33,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:19:33,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-12-14 12:19:33,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:19:33,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-12-14 12:19:33,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=879, Invalid=1982, Unknown=1, NotChecked=0, Total=2862 [2022-12-14 12:19:33,325 INFO L87 Difference]: Start difference. First operand 227 states and 231 transitions. Second operand has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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 12:19:33,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:19:33,362 INFO L93 Difference]: Finished difference Result 349 states and 373 transitions. [2022-12-14 12:19:33,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-12-14 12:19:33,363 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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 420 [2022-12-14 12:19:33,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:19:33,364 INFO L225 Difference]: With dead ends: 349 [2022-12-14 12:19:33,364 INFO L226 Difference]: Without dead ends: 247 [2022-12-14 12:19:33,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1279 GetRequests, 1227 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=879, Invalid=1982, Unknown=1, NotChecked=0, Total=2862 [2022-12-14 12:19:33,365 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-14 12:19:33,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-14 12:19:33,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2022-12-14 12:19:33,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2022-12-14 12:19:33,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 242 states have (on average 1.012396694214876) internal successors, (245), 242 states have internal predecessors, (245), 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 12:19:33,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 251 transitions. [2022-12-14 12:19:33,372 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 251 transitions. Word has length 420 [2022-12-14 12:19:33,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:19:33,372 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 251 transitions. [2022-12-14 12:19:33,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 41 states have internal predecessors, (55), 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 12:19:33,372 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 251 transitions. [2022-12-14 12:19:33,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2022-12-14 12:19:33,374 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:19:33,374 INFO L195 NwaCegarLoop]: trace histogram [282, 100, 38, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:19:33,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2022-12-14 12:19:33,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-14 12:19:33,576 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:19:33,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:19:33,577 INFO L85 PathProgramCache]: Analyzing trace with hash 2101382941, now seen corresponding path program 15 times [2022-12-14 12:19:33,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:19:33,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065915245] [2022-12-14 12:19:33,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:19:33,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:19:33,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:19:35,548 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 45526 trivial. 0 not checked. [2022-12-14 12:19:35,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:19:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065915245] [2022-12-14 12:19:35,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065915245] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:19:35,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208929035] [2022-12-14 12:19:35,548 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-14 12:19:35,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:19:35,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:19:35,549 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:19:35,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-12-14 12:19:35,928 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-14 12:19:35,928 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:19:35,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 12:19:35,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:19:39,301 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 18052 proven. 4465 refuted. 0 times theorem prover too weak. 23750 trivial. 0 not checked. [2022-12-14 12:19:39,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:19:43,065 INFO L134 CoverageAnalysis]: Checked inductivity of 46267 backedges. 0 proven. 22517 refuted. 0 times theorem prover too weak. 23750 trivial. 0 not checked. [2022-12-14 12:19:43,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208929035] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:19:43,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [346780962] [2022-12-14 12:19:43,067 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:19:43,067 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:19:43,067 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:19:43,067 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:19:43,067 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:19:43,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:43,084 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:19:43,084 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 12:19:43,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:43,090 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 12:19:43,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:43,101 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 12:19:43,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:43,124 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:19:43,139 INFO L321 Elim1Store]: treesize reduction 54, result has 28.0 percent of original size [2022-12-14 12:19:43,140 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 12:19:43,179 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 12:19:43,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:43,209 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 12:19:43,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:43,263 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:19:43,264 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 12:19:43,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:43,288 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:19:43,288 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 12:19:43,315 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 12:19:43,324 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 12:19:43,387 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:19:43,403 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:19:45,152 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22408#(and (<= |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_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_90 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_90 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_90 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_90 4294967296) (- 4294967296))))) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:19:45,153 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:19:45,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:19:45,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 97, 97] total 141 [2022-12-14 12:19:45,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047253790] [2022-12-14 12:19:45,153 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:19:45,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 141 states [2022-12-14 12:19:45,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:19:45,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 141 interpolants. [2022-12-14 12:19:45,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6030, Invalid=17532, Unknown=0, NotChecked=0, Total=23562 [2022-12-14 12:19:45,157 INFO L87 Difference]: Start difference. First operand 247 states and 251 transitions. Second operand has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 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 12:19:45,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:19:45,354 INFO L93 Difference]: Finished difference Result 398 states and 414 transitions. [2022-12-14 12:19:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-12-14 12:19:45,355 INFO L78 Accepts]: Start accepts. Automaton has has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 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 440 [2022-12-14 12:19:45,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:19:45,356 INFO L225 Difference]: With dead ends: 398 [2022-12-14 12:19:45,356 INFO L226 Difference]: Without dead ends: 254 [2022-12-14 12:19:45,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1359 GetRequests, 1117 SyntacticMatches, 90 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13543 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=6030, Invalid=17532, Unknown=0, NotChecked=0, Total=23562 [2022-12-14 12:19:45,363 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:19:45,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 122 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:19:45,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-12-14 12:19:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-12-14 12:19:45,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 249 states have (on average 1.0120481927710843) internal successors, (252), 249 states have internal predecessors, (252), 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 12:19:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 258 transitions. [2022-12-14 12:19:45,371 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 258 transitions. Word has length 440 [2022-12-14 12:19:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:19:45,371 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 258 transitions. [2022-12-14 12:19:45,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 141 states, 141 states have (on average 1.1347517730496455) internal successors, (160), 141 states have internal predecessors, (160), 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 12:19:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 258 transitions. [2022-12-14 12:19:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2022-12-14 12:19:45,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:19:45,373 INFO L195 NwaCegarLoop]: trace histogram [300, 100, 39, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:19:45,381 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-12-14 12:19:45,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-12-14 12:19:45,575 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:19:45,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:19:45,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1222351528, now seen corresponding path program 16 times [2022-12-14 12:19:45,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:19:45,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319556670] [2022-12-14 12:19:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:19:45,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:19:45,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:19:47,809 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-12-14 12:19:47,809 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:19:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319556670] [2022-12-14 12:19:47,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319556670] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:19:47,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186443529] [2022-12-14 12:19:47,809 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-14 12:19:47,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:19:47,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:19:47,810 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:19:47,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-12-14 12:19:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:19:48,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 2797 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 12:19:48,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:19:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 20406 proven. 780 refuted. 0 times theorem prover too weak. 30403 trivial. 0 not checked. [2022-12-14 12:19:48,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:19:49,834 INFO L134 CoverageAnalysis]: Checked inductivity of 51589 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-12-14 12:19:49,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186443529] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:19:49,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1017284576] [2022-12-14 12:19:49,835 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:19:49,835 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:19:49,836 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:19:49,836 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:19:49,836 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:19:49,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:49,851 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:19:49,851 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 12:19:49,856 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:49,857 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 12:19:49,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:49,865 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 12:19:49,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:49,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:49,895 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 12:19:49,896 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 12:19:49,927 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 12:19:49,962 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:49,963 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 12:19:50,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:50,018 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:19:50,019 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 12:19:50,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:19:50,052 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:19:50,052 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 12:19:50,072 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 12:19:50,081 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 12:19:50,149 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:19:50,167 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:19:53,295 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '26533#(and (<= |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|))) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_96 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_96 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_96 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_96 4294967296) (- 4294967296))))) (<= 0 (+ |ULTIMATE.start_main_~ret~1#1| 2147483648)) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (= |#NULL.offset| 0) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:19:53,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:19:53,295 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:19:53,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42, 42] total 83 [2022-12-14 12:19:53,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550007712] [2022-12-14 12:19:53,296 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:19:53,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 83 states [2022-12-14 12:19:53,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:19:53,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2022-12-14 12:19:53,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3463, Invalid=5657, Unknown=0, NotChecked=0, Total=9120 [2022-12-14 12:19:53,297 INFO L87 Difference]: Start difference. First operand 254 states and 258 transitions. Second operand has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 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 12:19:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:19:53,385 INFO L93 Difference]: Finished difference Result 403 states and 448 transitions. [2022-12-14 12:19:53,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2022-12-14 12:19:53,386 INFO L78 Accepts]: Start accepts. Automaton has has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 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 459 [2022-12-14 12:19:53,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:19:53,387 INFO L225 Difference]: With dead ends: 403 [2022-12-14 12:19:53,387 INFO L226 Difference]: Without dead ends: 295 [2022-12-14 12:19:53,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1417 GetRequests, 1323 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1751 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=3463, Invalid=5657, Unknown=0, NotChecked=0, Total=9120 [2022-12-14 12:19:53,388 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:19:53,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 100 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:19:53,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-12-14 12:19:53,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 295. [2022-12-14 12:19:53,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 290 states have (on average 1.0103448275862068) internal successors, (293), 290 states have internal predecessors, (293), 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 12:19:53,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 299 transitions. [2022-12-14 12:19:53,396 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 299 transitions. Word has length 459 [2022-12-14 12:19:53,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:19:53,397 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 299 transitions. [2022-12-14 12:19:53,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 83 states, 83 states have (on average 1.1686746987951808) internal successors, (97), 83 states have internal predecessors, (97), 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 12:19:53,397 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 299 transitions. [2022-12-14 12:19:53,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2022-12-14 12:19:53,399 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:19:53,399 INFO L195 NwaCegarLoop]: trace histogram [300, 100, 80, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:19:53,406 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-12-14 12:19:53,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:19:53,600 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:19:53,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:19:53,601 INFO L85 PathProgramCache]: Analyzing trace with hash 420290909, now seen corresponding path program 17 times [2022-12-14 12:19:53,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:19:53,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438027899] [2022-12-14 12:19:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:19:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 12:19:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 12:19:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 54049 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-12-14 12:19:59,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 12:19:59,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438027899] [2022-12-14 12:19:59,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438027899] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 12:19:59,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945676872] [2022-12-14 12:19:59,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 12:19:59,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:19:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 12:19:59,234 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 12:19:59,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-12-14 12:31:58,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 42 check-sat command(s) [2022-12-14 12:31:58,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 12:31:59,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 2201 conjuncts, 117 conjunts are in the unsatisfiable core [2022-12-14 12:31:59,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 12:31:59,167 INFO L134 CoverageAnalysis]: Checked inductivity of 54049 backedges. 20506 proven. 3240 refuted. 0 times theorem prover too weak. 30303 trivial. 0 not checked. [2022-12-14 12:31:59,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 12:32:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 54049 backedges. 0 proven. 3240 refuted. 0 times theorem prover too weak. 50809 trivial. 0 not checked. [2022-12-14 12:32:01,402 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945676872] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 12:32:01,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [387051966] [2022-12-14 12:32:01,403 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-12-14 12:32:01,403 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 12:32:01,404 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 12:32:01,404 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 12:32:01,404 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 12:32:01,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:32:01,420 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-12-14 12:32:01,420 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 12:32:01,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:32:01,436 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-12-14 12:32:01,436 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 12:32:01,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:32:01,451 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 12:32:01,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:32:01,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:32:01,489 INFO L321 Elim1Store]: treesize reduction 49, result has 12.5 percent of original size [2022-12-14 12:32:01,490 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 12:32:01,514 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 12:32:01,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:32:01,547 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 12:32:01,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:32:01,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-12-14 12:32:01,594 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 12:32:01,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-14 12:32:01,617 INFO L321 Elim1Store]: treesize reduction 45, result has 6.3 percent of original size [2022-12-14 12:32:01,618 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 12:32:01,632 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 12:32:01,642 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 12:32:01,701 INFO L197 IcfgInterpreter]: Interpreting procedure mapsum with input of size 12 for LOIs [2022-12-14 12:32:01,715 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 12:32:07,070 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '31018#(and (<= |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)) (<= |#NULL.offset| 0) (= |ULTIMATE.start_main_~temp~0#1| (select (select |#memory_int| |ULTIMATE.start_main_~#x~0#1.base|) (+ 396 |ULTIMATE.start_main_~#x~0#1.offset|))) (<= |ULTIMATE.start_main_~ret~1#1| 2147483647) (exists ((v_mapsum_~ret~0_BEFORE_RETURN_101 Int)) (= |ULTIMATE.start_main_~ret5~0#1| (ite (<= (mod v_mapsum_~ret~0_BEFORE_RETURN_101 4294967296) 2147483647) (mod v_mapsum_~ret~0_BEFORE_RETURN_101 4294967296) (+ (mod v_mapsum_~ret~0_BEFORE_RETURN_101 4294967296) (- 4294967296))))) (= |ULTIMATE.start_main_~#x~0#1.offset| 0) (<= 0 (+ |ULTIMATE.start_main_~ret2~0#1| 2147483648)) (<= 0 |ULTIMATE.start_main_~#x~0#1.base|) (<= 99 |ULTIMATE.start_main_~i~2#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (<= 100 |ULTIMATE.start_main_~i~1#1|) (= |#NULL.base| 0))' at error location [2022-12-14 12:32:07,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 12:32:07,070 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 12:32:07,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 84, 83] total 103 [2022-12-14 12:32:07,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327792904] [2022-12-14 12:32:07,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 12:32:07,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2022-12-14 12:32:07,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 12:32:07,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2022-12-14 12:32:07,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5213, Invalid=8127, Unknown=0, NotChecked=0, Total=13340 [2022-12-14 12:32:07,072 INFO L87 Difference]: Start difference. First operand 295 states and 299 transitions. Second operand has 103 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 103 states have internal predecessors, (119), 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 12:32:10,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 12:32:10,940 INFO L93 Difference]: Finished difference Result 422 states and 445 transitions. [2022-12-14 12:32:10,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-12-14 12:32:10,941 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 103 states have internal predecessors, (119), 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 500 [2022-12-14 12:32:10,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 12:32:10,943 INFO L225 Difference]: With dead ends: 422 [2022-12-14 12:32:10,943 INFO L226 Difference]: Without dead ends: 314 [2022-12-14 12:32:10,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1680 GetRequests, 1404 SyntacticMatches, 63 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11117 ImplicationChecksByTransitivity, 12.9s TimeCoverageRelationStatistics Valid=15312, Invalid=30698, Unknown=0, NotChecked=0, Total=46010 [2022-12-14 12:32:10,946 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 107 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 12:32:10,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 115 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 12:32:10,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-12-14 12:32:10,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-12-14 12:32:10,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 309 states have (on average 1.0097087378640777) internal successors, (312), 309 states have internal predecessors, (312), 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 12:32:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 318 transitions. [2022-12-14 12:32:10,956 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 318 transitions. Word has length 500 [2022-12-14 12:32:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 12:32:10,956 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 318 transitions. [2022-12-14 12:32:10,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.1553398058252426) internal successors, (119), 103 states have internal predecessors, (119), 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 12:32:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 318 transitions. [2022-12-14 12:32:10,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 520 [2022-12-14 12:32:10,959 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 12:32:10,959 INFO L195 NwaCegarLoop]: trace histogram [300, 100, 99, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 12:32:11,033 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-12-14 12:32:11,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7de5e31b-ebf1-4367-acfb-36c21238195b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 12:32:11,159 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 12:32:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 12:32:11,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1721491480, now seen corresponding path program 18 times [2022-12-14 12:32:11,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 12:32:11,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221378305] [2022-12-14 12:32:11,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 12:32:11,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms