./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-fpi/s52if.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-fpi/s52if.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7 --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 adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:33:59,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:33:59,901 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:33:59,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:33:59,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:33:59,975 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:33:59,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:33:59,982 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:33:59,985 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:33:59,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:33:59,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:33:59,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:33:59,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:34:00,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:34:00,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:34:00,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:34:00,011 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:34:00,012 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:34:00,017 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:34:00,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:34:00,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:34:00,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:34:00,032 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:34:00,033 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:34:00,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:34:00,046 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:34:00,047 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:34:00,049 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:34:00,049 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:34:00,051 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:34:00,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:34:00,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:34:00,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:34:00,054 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:34:00,055 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:34:00,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:34:00,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:34:00,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:34:00,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:34:00,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:34:00,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:34:00,060 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:34:00,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:34:00,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:34:00,086 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:34:00,086 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:34:00,087 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:34:00,087 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:34:00,087 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:34:00,087 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:34:00,087 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:34:00,088 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:34:00,088 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:34:00,088 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:34:00,088 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:34:00,089 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:34:00,089 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:34:00,089 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:34:00,089 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:34:00,089 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:34:00,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:34:00,090 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:34:00,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:34:00,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:34:00,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:34:00,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:34:00,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:34:00,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:34:00,092 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:34:00,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:34:00,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:34:00,093 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:34:00,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:34:00,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:34:00,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:34:00,094 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:34:00,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:34:00,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:34:00,094 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:34:00,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:34:00,095 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:34:00,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:34:00,095 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:34:00,095 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 [2021-11-25 20:34:00,353 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:34:00,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:34:00,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:34:00,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:34:00,400 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:34:00,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-fpi/s52if.c [2021-11-25 20:34:00,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/data/e36c77315/fe722188c2d343dc8bbb5a1d01720d59/FLAG3018660f3 [2021-11-25 20:34:00,894 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:34:00,895 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/sv-benchmarks/c/array-fpi/s52if.c [2021-11-25 20:34:00,908 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/data/e36c77315/fe722188c2d343dc8bbb5a1d01720d59/FLAG3018660f3 [2021-11-25 20:34:01,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/data/e36c77315/fe722188c2d343dc8bbb5a1d01720d59 [2021-11-25 20:34:01,272 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:34:01,273 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:34:01,275 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:34:01,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:34:01,279 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:34:01,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e58b23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01, skipping insertion in model container [2021-11-25 20:34:01,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,288 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:34:01,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:34:01,492 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/sv-benchmarks/c/array-fpi/s52if.c[588,601] [2021-11-25 20:34:01,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:34:01,554 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:34:01,568 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/sv-benchmarks/c/array-fpi/s52if.c[588,601] [2021-11-25 20:34:01,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:34:01,611 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:34:01,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01 WrapperNode [2021-11-25 20:34:01,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:34:01,616 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:34:01,616 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:34:01,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:34:01,624 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,644 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,674 INFO L137 Inliner]: procedures = 17, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 90 [2021-11-25 20:34:01,675 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:34:01,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:34:01,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:34:01,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:34:01,684 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,724 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:34:01,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:34:01,733 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:34:01,733 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:34:01,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (1/1) ... [2021-11-25 20:34:01,742 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:34:01,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:01,768 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:34:01,791 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:34:01,826 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:34:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:34:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:34:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:34:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:34:01,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:34:01,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:34:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:34:01,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:34:01,928 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:34:01,929 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:34:02,132 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:34:02,210 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:34:02,215 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:34:02,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:34:02 BoogieIcfgContainer [2021-11-25 20:34:02,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:34:02,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:34:02,219 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:34:02,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:34:02,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:34:01" (1/3) ... [2021-11-25 20:34:02,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5961022c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:34:02, skipping insertion in model container [2021-11-25 20:34:02,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:34:01" (2/3) ... [2021-11-25 20:34:02,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5961022c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:34:02, skipping insertion in model container [2021-11-25 20:34:02,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:34:02" (3/3) ... [2021-11-25 20:34:02,226 INFO L111 eAbstractionObserver]: Analyzing ICFG s52if.c [2021-11-25 20:34:02,231 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:34:02,231 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:34:02,283 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:34:02,290 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:34:02,290 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:34:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-25 20:34:02,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:02,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:02,312 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:34:02,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:02,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1162179950, now seen corresponding path program 1 times [2021-11-25 20:34:02,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:02,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702086406] [2021-11-25 20:34:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:02,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:02,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:02,582 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:02,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702086406] [2021-11-25 20:34:02,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702086406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:02,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:02,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:34:02,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237717094] [2021-11-25 20:34:02,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:02,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-25 20:34:02,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:02,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-25 20:34:02,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-25 20:34:02,623 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:02,667 INFO L93 Difference]: Finished difference Result 20 states and 27 transitions. [2021-11-25 20:34:02,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-25 20:34:02,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-25 20:34:02,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:02,678 INFO L225 Difference]: With dead ends: 20 [2021-11-25 20:34:02,678 INFO L226 Difference]: Without dead ends: 9 [2021-11-25 20:34:02,681 INFO L932 BasicCegarLoop]: 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 [2021-11-25 20:34:02,685 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:02,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:34:02,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-25 20:34:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-25 20:34:02,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.375) internal successors, (11), 8 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 11 transitions. [2021-11-25 20:34:02,719 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 11 transitions. Word has length 7 [2021-11-25 20:34:02,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:02,720 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 11 transitions. [2021-11-25 20:34:02,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 11 transitions. [2021-11-25 20:34:02,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-25 20:34:02,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:02,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:02,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:34:02,722 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:34:02,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:02,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1871859412, now seen corresponding path program 1 times [2021-11-25 20:34:02,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032434732] [2021-11-25 20:34:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:02,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:02,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:34:02,807 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:02,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032434732] [2021-11-25 20:34:02,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032434732] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:34:02,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:34:02,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:34:02,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518573743] [2021-11-25 20:34:02,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:34:02,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 20:34:02,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:02,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 20:34:02,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:34:02,813 INFO L87 Difference]: Start difference. First operand 9 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:02,849 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2021-11-25 20:34:02,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 20:34:02,849 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-11-25 20:34:02,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:02,850 INFO L225 Difference]: With dead ends: 15 [2021-11-25 20:34:02,850 INFO L226 Difference]: Without dead ends: 11 [2021-11-25 20:34:02,851 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-25 20:34:02,853 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 7 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:02,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 4 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:34:02,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-11-25 20:34:02,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-11-25 20:34:02,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2021-11-25 20:34:02,858 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 8 [2021-11-25 20:34:02,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:02,859 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2021-11-25 20:34:02,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:02,859 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2021-11-25 20:34:02,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-25 20:34:02,860 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:02,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:02,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:34:02,861 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:34:02,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:02,862 INFO L85 PathProgramCache]: Analyzing trace with hash 908788323, now seen corresponding path program 1 times [2021-11-25 20:34:02,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:02,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762267724] [2021-11-25 20:34:02,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:02,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:02,888 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:34:02,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [836840954] [2021-11-25 20:34:02,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:02,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:02,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:02,892 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:34:02,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 20:34:02,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:02,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 38 conjunts are in the unsatisfiable core [2021-11-25 20:34:02,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:03,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 20:34:03,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 20:34:03,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-25 20:34:03,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 23 [2021-11-25 20:34:03,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2021-11-25 20:34:03,609 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 27 [2021-11-25 20:34:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:03,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:03,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 20:34:03,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-25 20:34:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:04,186 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:04,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762267724] [2021-11-25 20:34:04,186 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:34:04,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836840954] [2021-11-25 20:34:04,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836840954] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:34:04,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1535154030] [2021-11-25 20:34:04,208 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:34:04,208 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:34:04,213 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:34:04,219 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:34:04,219 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:34:04,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:34:04,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,371 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:34:04,372 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:34:04,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 20:34:04,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-25 20:34:04,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,609 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:04,610 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:04,660 INFO L354 Elim1Store]: treesize reduction 112, result has 20.0 percent of original size [2021-11-25 20:34:04,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 327 treesize of output 329 [2021-11-25 20:34:04,804 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:34:04,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 20:34:04,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-25 20:34:04,927 INFO L354 Elim1Store]: treesize reduction 47, result has 44.0 percent of original size [2021-11-25 20:34:04,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 127 [2021-11-25 20:34:04,971 INFO L354 Elim1Store]: treesize reduction 7, result has 46.2 percent of original size [2021-11-25 20:34:04,972 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 32 [2021-11-25 20:34:04,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:04,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 21 [2021-11-25 20:34:05,021 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 23 [2021-11-25 20:34:05,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:05,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-11-25 20:34:05,074 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:05,075 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 18 [2021-11-25 20:34:05,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2021-11-25 20:34:05,218 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:34:05,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:34:05,275 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-25 20:34:05,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-25 20:34:05,314 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-25 20:34:05,314 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 20:34:05,427 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:34:05,428 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:34:05,530 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:34:05,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:34:05,626 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:34:06,064 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '170#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:34:06,064 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:34:06,064 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:34:06,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-11-25 20:34:06,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114847677] [2021-11-25 20:34:06,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:34:06,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 20:34:06,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:06,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 20:34:06,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:34:06,067 INFO L87 Difference]: Start difference. First operand 11 states and 13 transitions. Second operand has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:06,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:06,182 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2021-11-25 20:34:06,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:34:06,182 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-25 20:34:06,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:06,183 INFO L225 Difference]: With dead ends: 19 [2021-11-25 20:34:06,183 INFO L226 Difference]: Without dead ends: 16 [2021-11-25 20:34:06,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:34:06,185 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:06,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 17 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 78 Invalid, 0 Unknown, 2 Unchecked, 0.1s Time] [2021-11-25 20:34:06,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-11-25 20:34:06,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-11-25 20:34:06,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2021-11-25 20:34:06,190 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 10 [2021-11-25 20:34:06,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:06,191 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2021-11-25 20:34:06,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2021-11-25 20:34:06,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:34:06,192 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:06,192 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:06,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:34:06,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:06,393 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:34:06,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1323033207, now seen corresponding path program 2 times [2021-11-25 20:34:06,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:06,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252298823] [2021-11-25 20:34:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:06,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:06,441 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:34:06,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1469002644] [2021-11-25 20:34:06,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:34:06,441 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:06,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:06,447 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:34:06,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 20:34:06,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 20:34:06,520 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:34:06,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:34:06,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:34:06,576 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:06,617 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:34:06,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:06,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252298823] [2021-11-25 20:34:06,617 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:34:06,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469002644] [2021-11-25 20:34:06,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469002644] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:34:06,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1716985199] [2021-11-25 20:34:06,621 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:34:06,621 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:34:06,621 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:34:06,621 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:34:06,622 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:34:06,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,650 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,718 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:34:06,718 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:34:06,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:34:06,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 20:34:06,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,790 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-25 20:34:06,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:06,896 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:06,897 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:06,947 INFO L354 Elim1Store]: treesize reduction 112, result has 20.0 percent of original size [2021-11-25 20:34:06,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 327 treesize of output 329 [2021-11-25 20:34:07,024 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:34:07,055 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:34:07,061 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:34:07,109 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:07,113 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:07,113 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 112 [2021-11-25 20:34:07,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:07,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-25 20:34:07,155 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:07,158 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:07,158 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 30 [2021-11-25 20:34:07,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:07,171 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 34 [2021-11-25 20:34:07,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:34:07,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:34:07,252 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:07,276 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:34:07,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 38 [2021-11-25 20:34:07,319 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:07,340 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:34:07,340 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2021-11-25 20:34:07,411 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:34:07,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:34:07,505 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:34:07,505 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:34:07,531 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:34:07,754 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '298#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:34:07,754 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:34:07,754 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:34:07,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2021-11-25 20:34:07,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746718637] [2021-11-25 20:34:07,755 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:34:07,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:34:07,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:07,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:34:07,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:34:07,756 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:07,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:07,881 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-11-25 20:34:07,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:34:07,882 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 20:34:07,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:07,883 INFO L225 Difference]: With dead ends: 23 [2021-11-25 20:34:07,883 INFO L226 Difference]: Without dead ends: 18 [2021-11-25 20:34:07,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:34:07,884 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:07,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 6 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:34:07,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-11-25 20:34:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 14. [2021-11-25 20:34:07,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:07,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2021-11-25 20:34:07,890 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 11 [2021-11-25 20:34:07,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:07,890 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2021-11-25 20:34:07,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:07,891 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2021-11-25 20:34:07,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 20:34:07,891 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:07,891 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:07,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:34:08,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:08,093 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:34:08,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:08,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1892164875, now seen corresponding path program 3 times [2021-11-25 20:34:08,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:08,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403564281] [2021-11-25 20:34:08,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:08,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:08,115 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:34:08,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [295347886] [2021-11-25 20:34:08,121 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:34:08,121 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:08,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:08,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:34:08,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 20:34:08,179 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:34:08,180 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:34:08,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:34:08,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:08,226 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:34:08,226 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:34:08,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:34:08,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403564281] [2021-11-25 20:34:08,258 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:34:08,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295347886] [2021-11-25 20:34:08,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295347886] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:34:08,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1996053638] [2021-11-25 20:34:08,262 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:34:08,262 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:34:08,262 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:34:08,263 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:34:08,263 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:34:08,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,357 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:34:08,357 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:34:08,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:34:08,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,391 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 20:34:08,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2021-11-25 20:34:08,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:08,539 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:34:08,585 INFO L354 Elim1Store]: treesize reduction 112, result has 20.0 percent of original size [2021-11-25 20:34:08,586 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 8 case distinctions, treesize of input 327 treesize of output 329 [2021-11-25 20:34:08,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:34:08,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:34:08,755 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:34:08,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,797 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:34:08,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 112 [2021-11-25 20:34:08,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-25 20:34:08,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,847 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 33 [2021-11-25 20:34:08,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:08,867 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 37 [2021-11-25 20:34:08,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:34:08,912 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:34:08,954 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-25 20:34:08,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-25 20:34:09,008 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-25 20:34:09,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 20:34:09,122 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:34:09,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:34:09,189 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:34:09,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:34:09,282 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:34:09,619 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '439#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:34:09,619 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:34:09,620 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:34:09,620 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-25 20:34:09,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702610338] [2021-11-25 20:34:09,620 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:34:09,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:34:09,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:34:09,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:34:09,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:34:09,621 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:09,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:34:09,687 INFO L93 Difference]: Finished difference Result 25 states and 30 transitions. [2021-11-25 20:34:09,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 20:34:09,688 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-25 20:34:09,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:34:09,688 INFO L225 Difference]: With dead ends: 25 [2021-11-25 20:34:09,688 INFO L226 Difference]: Without dead ends: 14 [2021-11-25 20:34:09,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:34:09,690 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:34:09,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:34:09,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-25 20:34:09,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-25 20:34:09,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:09,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-25 20:34:09,694 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 11 [2021-11-25 20:34:09,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:34:09,694 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-25 20:34:09,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:34:09,694 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-25 20:34:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:34:09,695 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:34:09,695 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:34:09,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:34:09,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:09,912 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:34:09,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:34:09,912 INFO L85 PathProgramCache]: Analyzing trace with hash 824956914, now seen corresponding path program 4 times [2021-11-25 20:34:09,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:34:09,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526494283] [2021-11-25 20:34:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:34:09,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:34:09,951 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:34:09,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64268001] [2021-11-25 20:34:09,951 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:34:09,952 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:34:09,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:34:09,958 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:34:09,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 20:34:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:34:10,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 54 conjunts are in the unsatisfiable core [2021-11-25 20:34:10,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:34:10,062 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 20:34:10,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 20:34:10,092 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-25 20:34:10,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:10,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 20:34:10,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:10,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 41 treesize of output 35 [2021-11-25 20:34:10,305 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:34:10,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 45 treesize of output 35 [2021-11-25 20:34:10,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 94 [2021-11-25 20:34:10,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-25 20:34:10,439 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 5 [2021-11-25 20:34:10,506 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 47 treesize of output 33 [2021-11-25 20:34:10,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2021-11-25 20:34:10,598 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:34:10,599 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:34:10,687 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 20:34:10,826 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse6))) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (= .cse1 6))) (let ((.cse0 (not .cse4)) (.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse6 4)))) (and (or .cse0 (= (* 6 c_~N~0) (+ .cse1 .cse2 .cse3))) (or .cse4 (forall ((v_ArrVal_210 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) 6))) (or .cse0 (= 6 .cse3)) (or (forall ((v_ArrVal_210 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) (select v_ArrVal_210 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) .cse4)))))) is different from false [2021-11-25 20:34:10,891 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse4 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse2 (= .cse3 6))) (let ((.cse0 (not .cse2)) (.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (and (or .cse0 (= .cse1 6)) (or (forall ((v_ArrVal_210 (Array Int Int))) (= 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) .cse2) (or .cse0 (= (* 6 c_~N~0) (+ .cse3 .cse1 .cse4))) (or (forall ((v_ArrVal_210 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (select v_ArrVal_210 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) .cse2))))) is different from false [2021-11-25 20:34:11,334 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse22 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse23 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (let ((.cse20 (select .cse22 .cse23))) (let ((.cse21 (store .cse22 .cse23 (+ .cse20 5)))) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse21))) (let ((.cse6 (select .cse21 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse19 (select .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse0 (= .cse20 1)) (.cse7 (select .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse11 (= 6 .cse6))) (let ((.cse4 (not .cse11)) (.cse8 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse19 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse6 .cse7))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (.cse5 (not .cse0))) (and (or .cse0 (forall ((v_ArrVal_209 (Array Int Int)) (v_ArrVal_210 (Array Int Int))) (or (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_209) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (select v_ArrVal_210 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (= 6 (select v_ArrVal_209 |c_ULTIMATE.start_main_~a~0#1.offset|))))) (or .cse0 (forall ((v_ArrVal_209 (Array Int Int))) (let ((.cse1 (select v_ArrVal_209 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= 6 .cse1)) (= (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_209))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse1))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6))))) (or .cse4 .cse5 (= (* 6 c_~N~0) (+ .cse6 .cse7 .cse8))) (or .cse4 .cse5 (= 6 .cse8)) (or .cse5 (forall ((v_ArrVal_210 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse9 .cse10 (+ (select .cse9 .cse10) 5)))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6)) .cse11) (or .cse0 (forall ((v_ArrVal_209 (Array Int Int))) (let ((.cse12 (select v_ArrVal_209 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (not (= 6 .cse12)) (= (* 6 c_~N~0) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_209))) (let ((.cse15 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse13 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse13 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) .cse12))))))))) (or (forall ((v_ArrVal_210 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse17 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse16 .cse17 (+ (select .cse16 .cse17) 5)))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) (select v_ArrVal_210 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) .cse5 .cse11) (or .cse0 (forall ((v_ArrVal_209 (Array Int Int)) (v_ArrVal_210 (Array Int Int))) (or (= 6 (select v_ArrVal_209 |c_ULTIMATE.start_main_~a~0#1.offset|)) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_209) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_210) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6)))))))))))) is different from false [2021-11-25 20:34:11,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:34:11,517 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:34:11,535 INFO L354 Elim1Store]: treesize reduction 40, result has 33.3 percent of original size [2021-11-25 20:34:11,535 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 80 treesize of output 66 [2021-11-25 20:34:11,669 INFO L354 Elim1Store]: treesize reduction 19, result has 68.3 percent of original size [2021-11-25 20:34:11,670 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 246 treesize of output 159 [2021-11-25 20:34:11,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:34:11,835 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:34:11,936 INFO L354 Elim1Store]: treesize reduction 19, result has 68.3 percent of original size [2021-11-25 20:34:11,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 314 treesize of output 184 [2021-11-25 20:34:12,172 INFO L354 Elim1Store]: treesize reduction 40, result has 33.3 percent of original size [2021-11-25 20:34:12,173 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 86 treesize of output 72 [2021-11-25 20:35:24,014 WARN L227 SmtUtils]: Spent 52.13s on a formula simplification. DAG size of input: 163 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:35:28,094 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 5 not checked. [2021-11-25 20:35:28,094 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:28,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526494283] [2021-11-25 20:35:28,094 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:35:28,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64268001] [2021-11-25 20:35:28,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64268001] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:35:28,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1038706398] [2021-11-25 20:35:28,097 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:35:28,097 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:35:28,098 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:35:28,098 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:35:28,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:35:28,211 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:28,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:28,289 INFO L244 Elim1Store]: Index analysis took 120 ms [2021-11-25 20:35:28,808 INFO L354 Elim1Store]: treesize reduction 65, result has 32.3 percent of original size [2021-11-25 20:35:28,808 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2021-11-25 20:35:28,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:28,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:35:28,912 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:28,936 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:28,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:29,069 INFO L244 Elim1Store]: Index analysis took 142 ms [2021-11-25 20:35:29,779 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:35:29,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:35:29,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:29,871 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:29,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2021-11-25 20:35:30,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:30,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:30,120 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:30,156 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:30,400 INFO L354 Elim1Store]: treesize reduction 110, result has 12.0 percent of original size [2021-11-25 20:35:30,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 case distinctions, treesize of input 332 treesize of output 328 [2021-11-25 20:35:30,530 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:35:30,593 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:35:30,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:35:30,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:30,702 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:35:30,703 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 112 [2021-11-25 20:35:30,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:30,767 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-25 20:35:30,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:30,831 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:35:30,831 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 68 [2021-11-25 20:35:30,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:35:30,945 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:35:31,303 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-25 20:35:31,303 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-25 20:35:31,657 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-25 20:35:31,657 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 20:35:32,263 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:35:32,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:35:32,832 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:35:32,833 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:35:32,903 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:35:37,551 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '605#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:35:37,551 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:35:37,552 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:35:37,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-11-25 20:35:37,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481842380] [2021-11-25 20:35:37,552 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:35:37,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-25 20:35:37,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:37,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-25 20:35:37,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=398, Unknown=10, NotChecked=126, Total=600 [2021-11-25 20:35:37,554 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:39,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:39,694 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-11-25 20:35:39,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:35:39,694 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 20:35:39,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:39,695 INFO L225 Difference]: With dead ends: 24 [2021-11-25 20:35:39,695 INFO L226 Difference]: Without dead ends: 21 [2021-11-25 20:35:39,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 7 SemanticMatches, 24 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 80.0s TimeCoverageRelationStatistics Valid=73, Invalid=435, Unknown=10, NotChecked=132, Total=650 [2021-11-25 20:35:39,697 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 60 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:39,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 25 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 60 Unchecked, 1.4s Time] [2021-11-25 20:35:39,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-25 20:35:39,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2021-11-25 20:35:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:39,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-25 20:35:39,704 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2021-11-25 20:35:39,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:39,704 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-25 20:35:39,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.0952380952380953) internal successors, (23), 21 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:39,705 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-25 20:35:39,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 20:35:39,706 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:39,706 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:39,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:35:39,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:35:39,907 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:35:39,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:39,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1276501236, now seen corresponding path program 5 times [2021-11-25 20:35:39,908 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:39,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311755909] [2021-11-25 20:35:39,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:39,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:39,938 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:35:39,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [837768106] [2021-11-25 20:35:39,943 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:35:39,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:35:39,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:35:39,945 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:35:39,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:35:40,051 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 20:35:40,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:35:40,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:35:40,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:35:40,857 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:35:40,857 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:35:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:35:41,324 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311755909] [2021-11-25 20:35:41,325 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:35:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837768106] [2021-11-25 20:35:41,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837768106] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:35:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [481386081] [2021-11-25 20:35:41,327 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:35:41,327 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:35:41,328 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:35:41,328 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:35:41,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:35:41,382 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:41,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:41,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:41,498 INFO L244 Elim1Store]: Index analysis took 103 ms [2021-11-25 20:35:42,180 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:35:42,180 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:35:42,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:42,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:42,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 20:35:42,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:42,291 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:35:42,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:42,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2021-11-25 20:35:42,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:42,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:42,561 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:42,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:42,829 INFO L354 Elim1Store]: treesize reduction 110, result has 12.0 percent of original size [2021-11-25 20:35:42,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 case distinctions, treesize of input 332 treesize of output 328 [2021-11-25 20:35:42,932 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:35:42,978 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:35:43,006 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:35:43,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:43,079 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:35:43,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 112 [2021-11-25 20:35:43,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:43,140 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 30 [2021-11-25 20:35:43,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:43,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 64 [2021-11-25 20:35:43,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:35:43,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:35:43,332 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:43,641 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:35:43,641 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 38 [2021-11-25 20:35:43,713 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:44,000 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:35:44,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2021-11-25 20:35:44,511 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:35:44,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:35:45,060 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:35:45,060 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:35:45,203 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:35:47,506 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '777#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:35:47,506 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:35:47,506 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:35:47,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2021-11-25 20:35:47,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032437350] [2021-11-25 20:35:47,507 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:35:47,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:35:47,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:35:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:35:47,509 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:49,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:49,196 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2021-11-25 20:35:49,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 20:35:49,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-25 20:35:49,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:49,198 INFO L225 Difference]: With dead ends: 29 [2021-11-25 20:35:49,198 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 20:35:49,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:35:49,199 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:49,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 8 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-25 20:35:49,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 20:35:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2021-11-25 20:35:49,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-11-25 20:35:49,206 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 14 [2021-11-25 20:35:49,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:49,207 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-11-25 20:35:49,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-11-25 20:35:49,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-25 20:35:49,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:49,208 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:49,232 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:35:49,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:35:49,409 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:35:49,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:49,409 INFO L85 PathProgramCache]: Analyzing trace with hash -195971258, now seen corresponding path program 6 times [2021-11-25 20:35:49,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:49,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756862733] [2021-11-25 20:35:49,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:49,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:49,426 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:35:49,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243675880] [2021-11-25 20:35:49,427 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:35:49,427 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:35:49,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:35:49,428 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:35:49,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 20:35:49,508 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:35:49,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:35:49,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 20:35:49,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:35:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:35:50,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:35:50,638 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-25 20:35:50,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:35:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756862733] [2021-11-25 20:35:50,639 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:35:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243675880] [2021-11-25 20:35:50,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243675880] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:35:50,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [668435527] [2021-11-25 20:35:50,642 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:35:50,642 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:35:50,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:35:50,642 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:35:50,642 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:35:50,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:50,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:50,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:50,876 INFO L244 Elim1Store]: Index analysis took 143 ms [2021-11-25 20:35:51,588 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:35:51,588 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:35:51,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:51,642 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:35:51,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:51,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:51,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 20:35:51,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:51,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:51,807 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2021-11-25 20:35:51,999 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:52,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:52,012 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:52,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:52,289 INFO L354 Elim1Store]: treesize reduction 110, result has 12.0 percent of original size [2021-11-25 20:35:52,289 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 case distinctions, treesize of input 332 treesize of output 328 [2021-11-25 20:35:52,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:35:52,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:35:52,495 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:35:52,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:52,584 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:35:52,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 135 treesize of output 112 [2021-11-25 20:35:52,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:52,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 31 [2021-11-25 20:35:52,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:52,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 27 [2021-11-25 20:35:52,737 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:52,738 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 31 [2021-11-25 20:35:52,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:35:52,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:35:52,917 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:53,213 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:35:53,214 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 38 [2021-11-25 20:35:53,294 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:35:53,588 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:35:53,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2021-11-25 20:35:54,139 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:35:54,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:35:54,677 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:35:54,677 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:35:54,732 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:35:57,064 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '959#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:35:57,064 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:35:57,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:35:57,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 11 [2021-11-25 20:35:57,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807509961] [2021-11-25 20:35:57,065 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:35:57,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:35:57,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:35:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:35:57,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:35:57,066 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:35:58,018 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-11-25 20:35:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-25 20:35:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-25 20:35:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:35:58,020 INFO L225 Difference]: With dead ends: 31 [2021-11-25 20:35:58,020 INFO L226 Difference]: Without dead ends: 17 [2021-11-25 20:35:58,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:35:58,021 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 4 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:35:58,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 8 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:35:58,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-25 20:35:58,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-11-25 20:35:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-11-25 20:35:58,027 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2021-11-25 20:35:58,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:35:58,027 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-11-25 20:35:58,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:35:58,028 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-11-25 20:35:58,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-25 20:35:58,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:35:58,028 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:35:58,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-25 20:35:58,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:35:58,232 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:35:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:35:58,233 INFO L85 PathProgramCache]: Analyzing trace with hash 852757123, now seen corresponding path program 7 times [2021-11-25 20:35:58,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:35:58,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445939828] [2021-11-25 20:35:58,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:35:58,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:35:58,252 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:35:58,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1736329618] [2021-11-25 20:35:58,252 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:35:58,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:35:58,253 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:35:58,253 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:35:58,272 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 20:35:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:35:58,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 74 conjunts are in the unsatisfiable core [2021-11-25 20:35:58,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:35:58,397 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 20:35:58,433 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-11-25 20:35:58,590 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-25 20:35:58,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:58,885 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 30 [2021-11-25 20:35:59,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:59,227 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:59,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:35:59,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 20:36:00,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:00,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:00,089 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:00,090 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 50 treesize of output 47 [2021-11-25 20:36:00,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 100 treesize of output 98 [2021-11-25 20:36:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:00,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:00,589 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:36:00,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:00,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2021-11-25 20:36:00,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 15 treesize of output 11 [2021-11-25 20:36:01,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:01,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:01,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:01,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 54 treesize of output 47 [2021-11-25 20:36:02,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 101 [2021-11-25 20:36:02,230 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-25 20:36:02,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 7 treesize of output 5 [2021-11-25 20:36:02,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:02,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:02,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:36:02,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 60 treesize of output 47 [2021-11-25 20:36:03,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 56 treesize of output 45 [2021-11-25 20:36:03,966 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 33 [2021-11-25 20:36:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:36:04,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:36:05,020 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 20:36:06,051 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse6))) (.cse5 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse4 (= .cse1 6))) (let ((.cse0 (not .cse4)) (.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse6 4)))) (and (or .cse0 (= (* 6 c_~N~0) (+ .cse1 .cse2 .cse3))) (or .cse0 (= 6 .cse3)) (or (forall ((v_ArrVal_432 (Array Int Int))) (= 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))) .cse4) (or .cse4 (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))) is different from false [2021-11-25 20:36:08,353 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse16 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse16)))) (let ((.cse0 (= .cse10 6)) (.cse8 (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))))) (.cse7 (forall ((v_ArrVal_432 (Array Int Int))) (= 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))))) (and (or .cse0 (let ((.cse6 (forall ((v_ArrVal_430 (Array Int Int))) (= 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))))) (and (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse2 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse2 4)))) (or (not (= 6 .cse1)) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse2)) 6))))) (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse5 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5 4)))) (or (= (* 6 c_~N~0) (let ((.cse4 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse5)) .cse3 .cse4))) (not (= 6 .cse3)))))) (or .cse6 .cse7) (or .cse8 .cse6)))) (or (not .cse0) (let ((.cse15 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse13 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse16 4)))) (let ((.cse14 (= 6 .cse13))) (let ((.cse9 (not .cse14)) (.cse11 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse15 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse12 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse16)))) (and (or .cse9 (= (* 6 c_~N~0) (+ .cse10 .cse11 .cse12 .cse13))) (or .cse8 .cse14) (or .cse9 (= .cse11 6)) (or .cse14 .cse7)))))))))))) is different from false [2021-11-25 20:36:09,528 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (= .cse10 6)) (.cse6 (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse2 (forall ((v_ArrVal_432 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6)))) (and (or .cse0 (let ((.cse1 (forall ((v_ArrVal_430 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6)))) (and (or .cse1 .cse2) (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (* 6 c_~N~0) (let ((.cse4 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse3 .cse4))) (not (= .cse3 6))))) (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse5 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse5 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6) (not (= .cse5 6))))) (or .cse1 .cse6)))) (or (not .cse0) (let ((.cse13 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse12 (select .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse11 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse9 (= .cse11 6))) (let ((.cse7 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse13 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse11 .cse12))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (.cse8 (not .cse9))) (and (or (= .cse7 6) .cse8) (or .cse9 .cse6) (or .cse9 .cse2) (or (= (* 6 c_~N~0) (+ .cse10 .cse11 .cse7 .cse12)) .cse8))))))))))) is different from false [2021-11-25 20:37:39,011 WARN L227 SmtUtils]: Spent 39.81s on a formula simplification. DAG size of input: 147 DAG size of output: 92 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 20:37:40,638 INFO L354 Elim1Store]: treesize reduction 19, result has 68.3 percent of original size [2021-11-25 20:37:40,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 368 treesize of output 186 [2021-11-25 20:37:42,732 INFO L354 Elim1Store]: treesize reduction 19, result has 68.3 percent of original size [2021-11-25 20:37:42,733 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 234 treesize of output 146 [2021-11-25 20:37:43,879 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 20:37:43,880 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 32 [2021-11-25 20:37:44,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:37:44,264 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:37:44,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 306 treesize of output 122 [2021-11-25 20:37:46,711 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:37:47,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:37:48,103 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:37:48,834 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:38:01,009 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse46 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse47 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse48 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse46))) (let ((.cse42 (select .cse47 .cse48))) (let ((.cse44 (store .cse47 .cse48 (+ .cse42 5))) (.cse45 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse46 4))) (let ((.cse22 (select .cse44 .cse45))) (let ((.cse43 (store .cse44 .cse45 (+ 5 .cse22)))) (let ((.cse40 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse43))) (let ((.cse41 (select .cse40 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse15 (select .cse41 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse16 (select .cse43 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse0 (= .cse42 1)) (.cse14 (select (select (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse41 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse4 (select (select (store .cse40 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse41 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse14 .cse15 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (.cse3 (not .cse0))) (and (or .cse0 (forall ((v_arrayElimArr_24 (Array Int Int)) (v_ArrVal_432 (Array Int Int))) (let ((.cse1 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_24))) (or (= (* 6 c_~N~0) (+ (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (= 6 (select (select (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse2 (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select v_arrayElimArr_24 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))))) (or .cse3 (= .cse4 6)) (or .cse0 (forall ((v_arrayElimArr_23 (Array Int Int))) (= (select (select (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_23))) (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse6 (select .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse7 (select v_arrayElimArr_23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse8 (select .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse7 .cse8 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse6 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse8))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))) (or .cse0 (forall ((v_arrayElimArr_25 (Array Int Int))) (= (let ((.cse11 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_25))) (let ((.cse12 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse10 (select .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse13 (select v_arrayElimArr_25 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))) (let ((.cse9 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ .cse9 .cse10 (select (select (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse12 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse9 .cse10 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse13))))) (* 6 c_~N~0)))) (or .cse3 (= (+ .cse14 .cse4 .cse15 .cse16) (* 6 c_~N~0))) (or .cse3 (forall ((v_ArrVal_432 (Array Int Int))) (= (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse19 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse17 (let ((.cse20 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse21 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse19))) (store .cse20 .cse21 (+ (select .cse20 .cse21) 5)))) (.cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse19 4))) (store .cse17 .cse18 (+ 5 (select .cse17 .cse18)))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (* 6 c_~N~0))) (= .cse14 6)) (or (= 6 .cse16) (not (= .cse22 1))) (or .cse0 (= 0 (+ (* 4 |c_ULTIMATE.start_main_~i~0#1|) 4))) (forall ((v_ArrVal_428 (Array Int Int))) (or (= (select v_ArrVal_428 |c_ULTIMATE.start_main_~a~0#1.offset|) 6) (let ((.cse36 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse33 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse34 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse36))) (let ((.cse35 (select .cse33 .cse34))) (let ((.cse23 (= .cse35 1))) (let ((.cse24 (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse28 (forall ((v_ArrVal_432 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))) (.cse25 (forall ((v_ArrVal_430 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6))) (.cse26 (not .cse23)) (.cse29 (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse37 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse38 (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (let ((.cse39 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ (select (select (store .cse37 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse38 .cse39))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse38 .cse39)) (* 6 c_~N~0)) (not (= .cse38 6))))))) (.cse27 (= (select (store .cse33 .cse34 (+ .cse35 5)) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse36 4)) 1)) (.cse30 (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse31 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse32 (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (select (select (store .cse31 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse32 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6) (not (= .cse32 6)))))))) (and (or .cse23 .cse24 .cse25) (or .cse26 .cse24 .cse25 .cse27) (or .cse28 .cse23 .cse25) (or .cse23 .cse29) (or .cse28 .cse26 .cse25 .cse27) (or .cse26 .cse27 .cse30) (or .cse26 .cse29 .cse27) (or .cse23 .cse30))))))))))))))))))))) is different from false [2021-11-25 20:38:08,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:38:08,522 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:08,533 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:08,699 INFO L354 Elim1Store]: treesize reduction 15, result has 44.4 percent of original size [2021-11-25 20:38:08,700 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 233 treesize of output 192 [2021-11-25 20:38:08,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:38:08,981 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:08,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:38:09,001 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:09,081 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:38:09,082 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 209 treesize of output 85 [2021-11-25 20:38:09,219 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:09,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:38:09,239 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:09,310 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:38:09,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 488 treesize of output 139 [2021-11-25 20:38:09,406 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:09,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:38:09,428 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:09,511 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:38:09,511 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 294 treesize of output 95 [2021-11-25 20:38:09,621 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2021-11-25 20:38:09,646 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:09,658 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:38:09,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 503 treesize of output 419 [2021-11-25 20:38:21,846 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse68 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse71 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse72 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse68))) (let ((.cse73 (select .cse71 .cse72))) (let ((.cse0 (= .cse73 1)) (.cse23 (forall ((v_arrayElimArr_23 (Array Int Int))) (= (select (select (let ((.cse81 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_23))) (store .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse82 (select .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse83 (select v_arrayElimArr_23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse84 (select .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse83 .cse84 (select (select (store .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse83 .cse84))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))) (.cse25 (= (+ (* 4 |c_ULTIMATE.start_main_~i~0#1|) 8) 0)) (.cse24 (forall ((v_arrayElimArr_24 (Array Int Int)) (v_ArrVal_432 (Array Int Int))) (let ((.cse79 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_24))) (or (= (* 6 c_~N~0) (+ (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (= 6 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse80 (select .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select v_arrayElimArr_24 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))))) (.cse1 (forall ((v_arrayElimArr_25 (Array Int Int))) (= (* 6 c_~N~0) (let ((.cse76 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_25))) (let ((.cse77 (select .cse76 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse75 (select .cse77 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse78 (select v_arrayElimArr_25 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse74 (select (select (store .cse76 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse77 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse75 .cse78))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ .cse74 .cse75 (select (select (store .cse76 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse77 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse74 .cse75 .cse78))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse78))))))))) (and (or .cse0 (and .cse1 (forall ((v_arrayElimArr_28 (Array Int Int))) (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (or (= 6 (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_28))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse4 (select v_arrayElimArr_28 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse6))) (.cse5 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse4 .cse5 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (not (= (select v_arrayElimArr_28 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse6 4)) 6))))) (forall ((v_arrayElimArr_27 (Array Int Int))) (let ((.cse12 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (or (= (* 6 c_~N~0) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_27))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select v_arrayElimArr_27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse12))) (.cse11 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ .cse7 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse10 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse10 .cse11)))))) (not (= (select v_arrayElimArr_27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse12 4)) 6))))) (forall ((v_ArrVal_428 (Array Int Int))) (or (and (forall ((v_prenex_145 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse15 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_145) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (* 6 c_~N~0) (let ((.cse13 (select v_prenex_145 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_prenex_145 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse15))) (not (= 6 .cse15)))))) (forall ((v_prenex_148 (Array Int Int))) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_148) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (* 6 c_~N~0) (let ((.cse16 (select v_prenex_148 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse16 .cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_prenex_148 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse17 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))) (not (= .cse17 6)))))) (or (forall ((v_prenex_149 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_149) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6)) (forall ((v_prenex_150 (Array Int Int))) (= (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_150) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_prenex_150 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (* 6 c_~N~0)))) (forall ((v_prenex_153 (Array Int Int))) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse19 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_153) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (not (= .cse19 6)) (= (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_prenex_153 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse19 (select v_prenex_153 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))))) (or (forall ((v_prenex_151 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_151) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_prenex_152 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_152) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))) (or (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (forall ((v_ArrVal_430 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6))) (forall ((v_prenex_144 (Array Int Int))) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse21 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_144) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (not (= .cse21 6)) (= (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_prenex_144 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse21 (select v_prenex_144 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))))) (or (forall ((v_prenex_147 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_147) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6)) (forall ((v_prenex_146 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_146) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))) (= (select v_ArrVal_428 |c_ULTIMATE.start_main_~a~0#1.offset|) 6))) .cse23 .cse24 .cse25 (forall ((v_arrayElimArr_26 (Array Int Int)) (v_ArrVal_432 (Array Int Int))) (let ((.cse26 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_26))) (or (not (= (select v_arrayElimArr_26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse26 4)) 6)) (= (* 6 c_~N~0) (+ (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (= 6 (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse28 (select .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select v_arrayElimArr_26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse26)))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) (or (not .cse0) (let ((.cse69 (store .cse71 .cse72 (+ .cse73 5))) (.cse70 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse68 4))) (let ((.cse64 (select .cse69 .cse70))) (let ((.cse66 (store .cse69 .cse70 (+ 5 .cse64))) (.cse67 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse68))) (let ((.cse61 (select .cse66 .cse67))) (let ((.cse65 (store .cse66 .cse67 (+ 5 .cse61)))) (let ((.cse62 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse65))) (let ((.cse63 (select .cse62 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse59 (select .cse63 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse60 (select .cse65 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse31 (= .cse64 1)) (.cse39 (select (select (store .cse62 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse63 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse59 .cse60))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse30 (select (select (store .cse62 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse63 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse59 .cse39 .cse60))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (.cse29 (not .cse31))) (and (or .cse29 (= 6 .cse30)) (or .cse31 .cse23) (or .cse31 .cse25) (or (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse34 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse32 (let ((.cse35 (let ((.cse37 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse38 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse34))) (store .cse37 .cse38 (+ (select .cse37 .cse38) 5)))) (.cse36 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse34 4))) (store .cse35 .cse36 (+ 5 (select .cse35 .cse36))))) (.cse33 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse34))) (store .cse32 .cse33 (+ 5 (select .cse32 .cse33)))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))) (= 6 .cse39) .cse29) (or .cse31 .cse24) (forall ((v_ArrVal_428 (Array Int Int))) (or (= (select v_ArrVal_428 |c_ULTIMATE.start_main_~a~0#1.offset|) 6) (let ((.cse51 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse48 (let ((.cse57 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse58 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse51))) (store .cse57 .cse58 (+ (select .cse57 .cse58) 5)))) (.cse49 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse51 4))) (let ((.cse50 (select .cse48 .cse49))) (let ((.cse40 (= .cse50 1))) (let ((.cse45 (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse42 (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse55 (select (select (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (let ((.cse56 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ (select (select (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse55 .cse56))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse55 .cse56)) (* 6 c_~N~0)) (not (= .cse55 6))))))) (.cse41 (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse52 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse53 (select (select (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (select (select (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse53 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6) (not (= .cse53 6))))))) (.cse43 (not .cse40)) (.cse44 (= (select (store .cse48 .cse49 (+ 5 .cse50)) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse51)) 1)) (.cse47 (forall ((v_ArrVal_432 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))) (.cse46 (forall ((v_ArrVal_430 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6)))) (and (or .cse40 .cse41) (or .cse42 .cse43 .cse44) (or .cse45 .cse46 .cse43 .cse44) (or .cse47 .cse46 .cse43 .cse44) (or .cse45 .cse46 .cse40) (or .cse42 .cse40) (or .cse41 .cse43 .cse44) (or .cse47 .cse46 .cse40))))))))) (or (= (* 6 c_~N~0) (+ .cse59 .cse39 .cse60 .cse30)) .cse29) (or .cse1 .cse31) (or (= 6 .cse60) (not (= .cse61 1)))))))))))))))))))) is different from false [2021-11-25 20:38:23,889 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse68 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse71 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse72 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse68))) (let ((.cse73 (select .cse71 .cse72))) (let ((.cse0 (= .cse73 1)) (.cse23 (forall ((v_arrayElimArr_23 (Array Int Int))) (= (select (select (let ((.cse81 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_23))) (store .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse82 (select .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse83 (select v_arrayElimArr_23 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse84 (select .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse83 .cse84 (select (select (store .cse81 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse82 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse83 .cse84))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))) (.cse25 (= (+ (* 4 |c_ULTIMATE.start_main_~i~0#1|) 8) 0)) (.cse24 (forall ((v_arrayElimArr_24 (Array Int Int)) (v_ArrVal_432 (Array Int Int))) (let ((.cse79 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_24))) (or (= (* 6 c_~N~0) (+ (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (= 6 (select (select (store .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse80 (select .cse79 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select v_arrayElimArr_24 |c_ULTIMATE.start_main_~a~0#1.offset|) (select .cse80 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))))) (.cse1 (forall ((v_arrayElimArr_25 (Array Int Int))) (= (* 6 c_~N~0) (let ((.cse76 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_25))) (let ((.cse77 (select .cse76 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse75 (select .cse77 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse78 (select v_arrayElimArr_25 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))))) (let ((.cse74 (select (select (store .cse76 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse77 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse75 .cse78))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ .cse74 .cse75 (select (select (store .cse76 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse77 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse74 .cse75 .cse78))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse78))))))))) (and (or .cse0 (and .cse1 (forall ((v_arrayElimArr_28 (Array Int Int))) (let ((.cse6 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (or (= 6 (select (select (let ((.cse2 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_28))) (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse3 (select .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (let ((.cse4 (select v_arrayElimArr_28 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse6))) (.cse5 (select .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse4 .cse5 (select (select (store .cse2 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse3 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse5))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (not (= (select v_arrayElimArr_28 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse6 4)) 6))))) (forall ((v_arrayElimArr_27 (Array Int Int))) (let ((.cse12 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (or (= (* 6 c_~N~0) (let ((.cse8 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_27))) (let ((.cse9 (select .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse7 (select v_arrayElimArr_27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse12))) (.cse11 (select .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (+ .cse7 (select (select (store .cse8 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse9 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse10 .cse11))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse10 .cse11)))))) (not (= (select v_arrayElimArr_27 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse12 4)) 6))))) (forall ((v_ArrVal_428 (Array Int Int))) (or (and (forall ((v_prenex_145 (Array Int Int))) (let ((.cse14 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse15 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_145) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (* 6 c_~N~0) (let ((.cse13 (select v_prenex_145 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse13 (select (select (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_prenex_145 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse15 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse15))) (not (= 6 .cse15)))))) (forall ((v_prenex_148 (Array Int Int))) (let ((.cse18 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_148) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (* 6 c_~N~0) (let ((.cse16 (select v_prenex_148 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ .cse16 .cse17 (select (select (store .cse18 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_prenex_148 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse17 .cse16))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))) (not (= .cse17 6)))))) (or (forall ((v_prenex_149 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_149) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6)) (forall ((v_prenex_150 (Array Int Int))) (= (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_150) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_prenex_150 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (* 6 c_~N~0)))) (forall ((v_prenex_153 (Array Int Int))) (let ((.cse20 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse19 (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_153) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (not (= .cse19 6)) (= (select (select (store .cse20 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_prenex_153 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse19 (select v_prenex_153 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))))) (or (forall ((v_prenex_151 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_151) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (forall ((v_prenex_152 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_152) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))) (or (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (forall ((v_ArrVal_430 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6))) (forall ((v_prenex_144 (Array Int Int))) (let ((.cse22 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse21 (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_144) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (not (= .cse21 6)) (= (select (select (store .cse22 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_prenex_144 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse21 (select v_prenex_144 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))))) (or (forall ((v_prenex_147 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_147) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6)) (forall ((v_prenex_146 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_prenex_146) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))) (= (select v_ArrVal_428 |c_ULTIMATE.start_main_~a~0#1.offset|) 6))) .cse23 .cse24 .cse25 (forall ((v_arrayElimArr_26 (Array Int Int)) (v_ArrVal_432 (Array Int Int))) (let ((.cse26 (* |c_ULTIMATE.start_main_~i~0#1| 4)) (.cse27 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_arrayElimArr_26))) (or (not (= (select v_arrayElimArr_26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse26 4)) 6)) (= (* 6 c_~N~0) (+ (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (= 6 (select (select (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse28 (select .cse27 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select .cse28 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select v_arrayElimArr_26 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse26)))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))))))) (or (not .cse0) (let ((.cse69 (store .cse71 .cse72 (+ .cse73 5))) (.cse70 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse68 4))) (let ((.cse64 (select .cse69 .cse70))) (let ((.cse66 (store .cse69 .cse70 (+ 5 .cse64))) (.cse67 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse68))) (let ((.cse61 (select .cse66 .cse67))) (let ((.cse65 (store .cse66 .cse67 (+ 5 .cse61)))) (let ((.cse62 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse65))) (let ((.cse63 (select .cse62 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse59 (select .cse63 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse60 (select .cse65 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse31 (= .cse64 1)) (.cse39 (select (select (store .cse62 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse63 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse59 .cse60))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (let ((.cse30 (select (select (store .cse62 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse63 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse59 .cse39 .cse60))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))) (.cse29 (not .cse31))) (and (or .cse29 (= 6 .cse30)) (or .cse31 .cse23) (or .cse31 .cse25) (or (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|) (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse34 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse32 (let ((.cse35 (let ((.cse37 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse38 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse34))) (store .cse37 .cse38 (+ (select .cse37 .cse38) 5)))) (.cse36 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse34 4))) (store .cse35 .cse36 (+ 5 (select .cse35 .cse36))))) (.cse33 (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse34))) (store .cse32 .cse33 (+ 5 (select .cse32 .cse33)))))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8))))) (= 6 .cse39) .cse29) (or .cse31 .cse24) (forall ((v_ArrVal_428 (Array Int Int))) (or (= (select v_ArrVal_428 |c_ULTIMATE.start_main_~a~0#1.offset|) 6) (let ((.cse51 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse48 (let ((.cse57 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse58 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse51))) (store .cse57 .cse58 (+ (select .cse57 .cse58) 5)))) (.cse49 (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse51 4))) (let ((.cse50 (select .cse48 .cse49))) (let ((.cse40 (= .cse50 1))) (let ((.cse45 (forall ((v_ArrVal_432 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) (select v_ArrVal_432 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) (.cse42 (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse54 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse55 (select (select (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (let ((.cse56 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (+ (select (select (store .cse54 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse55 .cse56))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) .cse55 .cse56)) (* 6 c_~N~0)) (not (= .cse55 6))))))) (.cse41 (forall ((v_ArrVal_430 (Array Int Int))) (let ((.cse52 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428))) (let ((.cse53 (select (select (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (= (select (select (store .cse52 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse53 (select v_ArrVal_430 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6) (not (= .cse53 6))))))) (.cse43 (not .cse40)) (.cse44 (= (select (store .cse48 .cse49 (+ 5 .cse50)) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse51)) 1)) (.cse47 (forall ((v_ArrVal_432 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_432) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6))) (.cse46 (forall ((v_ArrVal_430 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_428) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_430) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6)))) (and (or .cse40 .cse41) (or .cse42 .cse43 .cse44) (or .cse45 .cse46 .cse43 .cse44) (or .cse47 .cse46 .cse43 .cse44) (or .cse45 .cse46 .cse40) (or .cse42 .cse40) (or .cse41 .cse43 .cse44) (or .cse47 .cse46 .cse40))))))))) (or (= (* 6 c_~N~0) (+ .cse59 .cse39 .cse60 .cse30)) .cse29) (or .cse1 .cse31) (or (= 6 .cse60) (not (= .cse61 1)))))))))))))))))))) is different from true [2021-11-25 20:39:44,038 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 11 not checked. [2021-11-25 20:39:44,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:39:44,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445939828] [2021-11-25 20:39:44,038 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:39:44,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736329618] [2021-11-25 20:39:44,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736329618] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:39:44,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1947361761] [2021-11-25 20:39:44,040 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:39:44,040 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:39:44,040 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:39:44,041 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:39:44,041 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:39:44,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:44,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:44,220 INFO L244 Elim1Store]: Index analysis took 123 ms [2021-11-25 20:39:44,772 INFO L354 Elim1Store]: treesize reduction 65, result has 32.3 percent of original size [2021-11-25 20:39:44,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 27 treesize of output 52 [2021-11-25 20:39:44,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:44,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:44,855 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:44,925 INFO L244 Elim1Store]: Index analysis took 108 ms [2021-11-25 20:39:45,671 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:39:45,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:39:45,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:45,716 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:39:45,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:45,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:45,784 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2021-11-25 20:39:45,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:45,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:45,941 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:39:45,968 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:39:46,221 INFO L354 Elim1Store]: treesize reduction 110, result has 12.0 percent of original size [2021-11-25 20:39:46,221 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 case distinctions, treesize of input 332 treesize of output 328 [2021-11-25 20:39:46,311 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:39:46,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 20:39:46,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-25 20:39:46,927 INFO L354 Elim1Store]: treesize reduction 47, result has 44.0 percent of original size [2021-11-25 20:39:46,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 127 [2021-11-25 20:39:47,056 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:39:47,056 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 53 [2021-11-25 20:39:47,122 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:39:47,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 24 [2021-11-25 20:39:47,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:39:47,300 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:39:47,358 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:39:47,656 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:39:47,656 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2021-11-25 20:39:47,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:39:48,027 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:39:48,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 38 [2021-11-25 20:39:48,626 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:39:48,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:39:49,185 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:39:49,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:39:49,236 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:39:53,685 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1169#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:39:53,685 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:39:53,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:39:53,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 27 [2021-11-25 20:39:53,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639405081] [2021-11-25 20:39:53,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:39:53,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 20:39:53,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:39:53,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 20:39:53,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=568, Unknown=21, NotChecked=260, Total=930 [2021-11-25 20:39:53,688 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 27 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:59,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:39:59,584 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2021-11-25 20:39:59,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:39:59,585 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-25 20:39:59,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:39:59,585 INFO L225 Difference]: With dead ends: 29 [2021-11-25 20:39:59,585 INFO L226 Difference]: Without dead ends: 26 [2021-11-25 20:39:59,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 125.7s TimeCoverageRelationStatistics Valid=81, Invalid=568, Unknown=21, NotChecked=260, Total=930 [2021-11-25 20:39:59,587 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 1 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 162 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:39:59,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 35 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 106 Invalid, 0 Unknown, 162 Unchecked, 1.2s Time] [2021-11-25 20:39:59,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-11-25 20:39:59,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 23. [2021-11-25 20:39:59,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-11-25 20:39:59,596 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 16 [2021-11-25 20:39:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:39:59,596 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-11-25 20:39:59,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:39:59,597 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-11-25 20:39:59,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 20:39:59,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:39:59,598 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:39:59,621 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-11-25 20:39:59,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-25 20:39:59,804 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:39:59,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:39:59,804 INFO L85 PathProgramCache]: Analyzing trace with hash -243683031, now seen corresponding path program 8 times [2021-11-25 20:39:59,804 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:39:59,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460644989] [2021-11-25 20:39:59,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:39:59,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:39:59,821 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:39:59,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [948802854] [2021-11-25 20:39:59,822 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:39:59,822 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:39:59,822 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:39:59,831 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:39:59,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:39:59,936 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 20:39:59,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:39:59,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:39:59,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:01,070 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:40:01,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:40:01,740 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:01,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460644989] [2021-11-25 20:40:01,741 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:40:01,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948802854] [2021-11-25 20:40:01,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [948802854] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:40:01,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [141175385] [2021-11-25 20:40:01,743 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:40:01,743 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:40:01,743 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:40:01,743 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:40:01,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:40:01,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:01,813 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:40:01,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:01,862 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:01,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:01,959 INFO L244 Elim1Store]: Index analysis took 106 ms [2021-11-25 20:40:02,655 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:40:02,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:40:02,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:02,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:02,725 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 20:40:02,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:02,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:02,799 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2021-11-25 20:40:02,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:02,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:02,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:02,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:03,219 INFO L354 Elim1Store]: treesize reduction 110, result has 12.0 percent of original size [2021-11-25 20:40:03,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 case distinctions, treesize of input 332 treesize of output 328 [2021-11-25 20:40:03,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:40:03,358 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-25 20:40:03,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 20:40:03,854 INFO L354 Elim1Store]: treesize reduction 47, result has 44.0 percent of original size [2021-11-25 20:40:03,855 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 127 [2021-11-25 20:40:03,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 14 [2021-11-25 20:40:03,996 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 63 [2021-11-25 20:40:04,038 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:40:04,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:04,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 22 [2021-11-25 20:40:04,150 INFO L354 Elim1Store]: treesize reduction 12, result has 7.7 percent of original size [2021-11-25 20:40:04,151 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 112 treesize of output 73 [2021-11-25 20:40:04,183 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:04,184 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 66 [2021-11-25 20:40:04,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:04,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 68 [2021-11-25 20:40:04,429 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:40:04,458 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:40:04,519 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:04,845 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:40:04,845 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 38 [2021-11-25 20:40:04,916 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:05,220 INFO L354 Elim1Store]: treesize reduction 19, result has 56.8 percent of original size [2021-11-25 20:40:05,220 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 37 [2021-11-25 20:40:05,736 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:40:05,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:40:06,309 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:40:06,309 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:40:06,408 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:40:08,825 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1380#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:40:08,826 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:40:08,826 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:40:08,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2021-11-25 20:40:08,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865720048] [2021-11-25 20:40:08,827 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:08,827 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-25 20:40:08,827 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-25 20:40:08,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:40:08,829 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:11,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:11,485 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2021-11-25 20:40:11,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:40:11,486 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-25 20:40:11,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:11,488 INFO L225 Difference]: With dead ends: 35 [2021-11-25 20:40:11,488 INFO L226 Difference]: Without dead ends: 28 [2021-11-25 20:40:11,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=131, Invalid=469, Unknown=0, NotChecked=0, Total=600 [2021-11-25 20:40:11,489 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:11,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 10 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-25 20:40:11,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-25 20:40:11,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 20. [2021-11-25 20:40:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:11,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-25 20:40:11,495 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 17 [2021-11-25 20:40:11,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:11,495 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-25 20:40:11,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:11,496 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-25 20:40:11,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-25 20:40:11,497 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:11,497 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:40:11,525 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:11,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-25 20:40:11,724 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:11,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:11,725 INFO L85 PathProgramCache]: Analyzing trace with hash 665835221, now seen corresponding path program 9 times [2021-11-25 20:40:11,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:11,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181613819] [2021-11-25 20:40:11,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:11,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:11,739 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:40:11,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [229911385] [2021-11-25 20:40:11,740 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:40:11,740 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:11,740 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:11,746 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:11,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-25 20:40:11,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:40:11,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:40:11,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:40:11,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:12,791 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:40:12,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:13,456 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 20:40:13,456 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:40:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181613819] [2021-11-25 20:40:13,457 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:40:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [229911385] [2021-11-25 20:40:13,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [229911385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:40:13,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [627901758] [2021-11-25 20:40:13,459 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:40:13,459 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:40:13,460 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:40:13,460 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:40:13,460 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:40:13,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:13,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:13,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:13,636 INFO L244 Elim1Store]: Index analysis took 106 ms [2021-11-25 20:40:14,330 INFO L354 Elim1Store]: treesize reduction 94, result has 27.7 percent of original size [2021-11-25 20:40:14,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 40 treesize of output 69 [2021-11-25 20:40:14,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:14,381 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:14,400 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 37 [2021-11-25 20:40:14,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:14,443 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2021-11-25 20:40:14,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:14,512 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:14,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 43 [2021-11-25 20:40:14,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:14,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:14,699 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:14,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:14,970 INFO L354 Elim1Store]: treesize reduction 110, result has 12.0 percent of original size [2021-11-25 20:40:14,970 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 7 case distinctions, treesize of input 332 treesize of output 328 [2021-11-25 20:40:15,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-25 20:40:15,117 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2021-11-25 20:40:15,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 20:40:15,632 INFO L354 Elim1Store]: treesize reduction 47, result has 44.0 percent of original size [2021-11-25 20:40:15,633 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 127 [2021-11-25 20:40:15,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:15,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 22 [2021-11-25 20:40:15,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:15,779 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:40:15,780 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 29 [2021-11-25 20:40:15,806 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:40:15,829 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 20:40:15,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:15,864 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 69 [2021-11-25 20:40:15,913 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:15,913 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 75 [2021-11-25 20:40:15,949 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:15,949 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 104 treesize of output 60 [2021-11-25 20:40:16,029 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 18 [2021-11-25 20:40:16,058 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 19 [2021-11-25 20:40:16,434 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-25 20:40:16,434 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 33 [2021-11-25 20:40:16,800 INFO L354 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2021-11-25 20:40:16,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 32 [2021-11-25 20:40:17,359 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:40:17,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 39 treesize of output 57 [2021-11-25 20:40:17,989 INFO L354 Elim1Store]: treesize reduction 26, result has 63.4 percent of original size [2021-11-25 20:40:17,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 40 treesize of output 58 [2021-11-25 20:40:18,108 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 20:40:22,017 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1603#(and (<= 0 ~N~0) (= |ULTIMATE.start_main_~a~0#1.offset| 0) (<= ~N~0 2147483647) (= |ULTIMATE.start_main_~#sum~0#1.offset| 0) (= (ite (= (* 6 ~N~0) |ULTIMATE.start_main_#t~mem17#1|) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_assume_abort_if_not_#in~cond#1|) (<= 0 |ULTIMATE.start_assume_abort_if_not_~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= (select (select |#memory_int| |ULTIMATE.start_main_~#sum~0#1.base|) |ULTIMATE.start_main_~#sum~0#1.offset|) |ULTIMATE.start_main_#t~mem17#1|) (<= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (<= ~N~0 |ULTIMATE.start_main_~i~0#1|) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~#sum~0#1.base|) (<= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |#NULL.base| 0))' at error location [2021-11-25 20:40:22,018 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 20:40:22,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 20:40:22,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14 [2021-11-25 20:40:22,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255172819] [2021-11-25 20:40:22,018 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 20:40:22,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:40:22,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:40:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:40:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:40:22,020 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:23,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:40:23,167 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2021-11-25 20:40:23,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:40:23,168 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-11-25 20:40:23,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:40:23,169 INFO L225 Difference]: With dead ends: 37 [2021-11-25 20:40:23,169 INFO L226 Difference]: Without dead ends: 20 [2021-11-25 20:40:23,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 28 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-11-25 20:40:23,172 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:40:23,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 10 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:40:23,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-25 20:40:23,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-25 20:40:23,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:23,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2021-11-25 20:40:23,179 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2021-11-25 20:40:23,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:40:23,180 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2021-11-25 20:40:23,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:40:23,180 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2021-11-25 20:40:23,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-25 20:40:23,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:40:23,181 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:40:23,213 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:40:23,396 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:23,396 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:40:23,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:40:23,396 INFO L85 PathProgramCache]: Analyzing trace with hash -1139065518, now seen corresponding path program 10 times [2021-11-25 20:40:23,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:40:23,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625674042] [2021-11-25 20:40:23,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:40:23,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:40:23,414 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 20:40:23,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [695267743] [2021-11-25 20:40:23,414 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-25 20:40:23,415 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:40:23,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:40:23,430 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:40:23,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-25 20:40:23,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:40:23,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 89 conjunts are in the unsatisfiable core [2021-11-25 20:40:23,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:40:23,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 20:40:23,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:23,829 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-11-25 20:40:24,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,080 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,081 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 38 [2021-11-25 20:40:24,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-25 20:40:24,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:24,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 54 [2021-11-25 20:40:26,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,039 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 105 [2021-11-25 20:40:26,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,094 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:26,106 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 76 [2021-11-25 20:40:26,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 20:40:26,932 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 110 [2021-11-25 20:40:26,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,968 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:26,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,986 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:26,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,015 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 79 [2021-11-25 20:40:27,083 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 20:40:27,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,674 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 113 [2021-11-25 20:40:27,697 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:40:27,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:27,751 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 82 [2021-11-25 20:40:27,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-11-25 20:40:28,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:28,484 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:28,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:28,502 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:28,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:28,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:28,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:28,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 59 [2021-11-25 20:40:29,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:29,768 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 108 [2021-11-25 20:40:29,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 22 [2021-11-25 20:40:29,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 62 treesize of output 50 [2021-11-25 20:40:30,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:30,713 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 115 [2021-11-25 20:40:30,739 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 31 [2021-11-25 20:40:30,933 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 57 [2021-11-25 20:40:31,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,740 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,765 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:31,783 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 77 treesize of output 61 [2021-11-25 20:40:32,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:32,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2021-11-25 20:40:33,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:40:33,131 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 7 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 41 [2021-11-25 20:40:33,538 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:40:33,539 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:40:34,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-11-25 20:40:35,331 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse5 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5)))) (let ((.cse0 (= .cse1 6))) (and (or (not .cse0) (let ((.cse4 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (select .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse4 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5 4)))) (and (= (* 6 c_~N~0) (+ .cse1 .cse2 .cse3)) (= 6 .cse3)))))) (or (and (forall ((v_ArrVal_722 (Array Int Int))) (= 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)))) (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) .cse0))))) is different from false [2021-11-25 20:40:36,922 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse12 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse7 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse12)))) (let ((.cse0 (= .cse7 6)) (.cse5 (and (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))) 6))))) (and (or .cse0 (and (forall ((v_ArrVal_719 (Array Int Int))) (let ((.cse4 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse4 4)))) (or (let ((.cse1 (select v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse2))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse4)))) (and (= (+ .cse1 .cse2 .cse3) (* 6 c_~N~0)) (= 6 .cse3)))) (not (= .cse2 6)))))) (or (forall ((v_ArrVal_719 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) 6)) .cse5))) (or (not .cse0) (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse9 (select .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse10 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse9))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse12 4)))) (let ((.cse6 (= 6 .cse10))) (and (or (not .cse6) (let ((.cse8 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse11 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse7 .cse9 .cse10))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse12)))) (and (= (* 6 c_~N~0) (+ .cse7 .cse8 .cse9 .cse10)) (= .cse8 6)))) (or .cse5 .cse6))))))))))) is different from false [2021-11-25 20:40:44,561 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse16 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|)) (.cse17 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse12 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse17))) (.cse14 (select .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse15 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse17 4))) (.cse9 (and (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 (* |c_ULTIMATE.start_main_~i~0#1| 4))) 6)))) (.cse0 (= .cse12 6))) (let ((.cse7 (not .cse0)) (.cse18 (and (forall ((v_ArrVal_719 (Array Int Int))) (let ((.cse22 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse20 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse22)))) (or (let ((.cse19 (select v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse21 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse19 .cse20))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse22)))) (and (= (+ .cse19 .cse20 .cse21) (* 6 c_~N~0)) (= 6 .cse21)))) (not (= .cse20 6)))))) (or (forall ((v_ArrVal_719 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 (* |c_ULTIMATE.start_main_~i~0#1| 4))) 6)) .cse9))) (.cse8 (= 6 .cse15))) (and (or .cse0 (forall ((v_ArrVal_715 (Array Int Int))) (let ((.cse5 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (let ((.cse1 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| .cse5 4)))) (or (not (= .cse1 6)) (let ((.cse4 (select v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse5)))) (let ((.cse6 (= .cse3 6))) (and (or (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse1 .cse4))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse5)))) (and (= 6 .cse2) (= (* 6 c_~N~0) (+ .cse3 .cse1 .cse4 .cse2)))) (not .cse6)) (or (and (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 (* |c_ULTIMATE.start_main_~i~0#1| 4))) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 (* |c_ULTIMATE.start_main_~i~0#1| 4))) 6))) .cse6)))))))))) (or .cse7 (not .cse8) (let ((.cse13 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8 .cse17)))) (let ((.cse10 (= .cse13 6))) (and (or .cse9 .cse10) (or (let ((.cse11 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse16 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse12 .cse13 .cse14 .cse15))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12 .cse17)))) (and (= .cse11 6) (= (* 6 c_~N~0) (+ .cse12 .cse11 .cse13 .cse14 .cse15)))) (not .cse10)))))) (or (forall ((v_ArrVal_715 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4) 4)) 6)) .cse18 .cse0) (or .cse7 .cse18 .cse8)))))) is different from false [2021-11-25 20:40:48,523 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse14 (select |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse10 (select (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse13 (select .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse15 (and (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 6)))) (.cse11 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (.cse5 (= .cse10 6))) (let ((.cse7 (not .cse5)) (.cse16 (= .cse11 6)) (.cse6 (and (or (forall ((v_ArrVal_719 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6)) .cse15) (forall ((v_ArrVal_719 (Array Int Int))) (let ((.cse18 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (or (let ((.cse19 (select v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse17 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse18 .cse19))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= .cse17 6) (= (* 6 c_~N~0) (+ .cse18 .cse17 .cse19))))) (not (= .cse18 6)))))))) (and (or (forall ((v_ArrVal_715 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (not (= 6 .cse0)) (let ((.cse4 (select v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (let ((.cse1 (= .cse3 6))) (and (or .cse1 (and (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))) (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 6)))) (or (let ((.cse2 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse0))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= (* 6 c_~N~0) (+ .cse2 .cse3 .cse4 .cse0)) (= .cse2 6))) (not .cse1))))))))) .cse5) (or .cse6 .cse5 (forall ((v_ArrVal_715 (Array Int Int))) (= 6 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))))) (or .cse7 (let ((.cse12 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse11 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (let ((.cse8 (= .cse12 6))) (and (or (not .cse8) (let ((.cse9 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse14 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse10 .cse11 .cse12 .cse13))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= .cse9 6) (= (* 6 c_~N~0) (+ .cse10 .cse11 .cse9 .cse12 .cse13))))) (or .cse8 .cse15)))) (not .cse16)) (or .cse7 .cse16 .cse6)))))) is different from false [2021-11-25 20:41:23,692 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse41 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse42 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (let ((.cse43 (select .cse41 .cse42))) (let ((.cse0 (= .cse43 1))) (and (or (not .cse0) (let ((.cse40 (store .cse41 .cse42 (+ .cse43 5)))) (let ((.cse26 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse40))) (let ((.cse27 (select .cse26 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse22 (select .cse40 |c_ULTIMATE.start_main_~a~0#1.offset|)) (.cse23 (select .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse24 (select (select (store .cse26 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse23))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4))) (.cse13 (= 6 .cse22)) (.cse19 (and (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse36 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse37 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse36 .cse37 (+ (select .cse36 .cse37) 5)))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 6)) (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse38 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse39 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse38 .cse39 (+ (select .cse38 .cse39) 5)))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (let ((.cse15 (and (or (forall ((v_ArrVal_719 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse28 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse29 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse28 .cse29 (+ (select .cse28 .cse29) 5)))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)) 6)) .cse19) (forall ((v_ArrVal_719 (Array Int Int))) (let ((.cse33 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse34 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse35 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse34 .cse35 (+ (select .cse34 .cse35) 5)))))) (let ((.cse31 (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (or (let ((.cse32 (select v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse30 (select (select (store .cse33 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse31 .cse32))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= 6 .cse30) (= (* 6 c_~N~0) (+ .cse31 .cse32 .cse30))))) (not (= .cse31 6)))))))) (.cse14 (not .cse13)) (.cse16 (= 6 .cse24))) (and (or (forall ((v_ArrVal_715 (Array Int Int))) (let ((.cse5 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse11 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse12 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse11 .cse12 (+ (select .cse11 .cse12) 5)))))) (let ((.cse1 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (not (= 6 .cse1)) (let ((.cse4 (select v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse3 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse4 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (let ((.cse6 (= .cse3 6))) (and (or (let ((.cse2 (select (select (store .cse5 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse3 .cse4 .cse1))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= .cse2 6) (= (* 6 c_~N~0) (+ .cse3 .cse2 .cse4 .cse1)))) (not .cse6)) (or .cse6 (and (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse7 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse8 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse7 .cse8 (+ (select .cse7 .cse8) 5)))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 6)) (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse9 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse10 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse9 .cse10 (+ (select .cse9 .cse10) 5)))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))))))))))) .cse13) (or .cse14 .cse15 .cse16) (or (forall ((v_ArrVal_715 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (let ((.cse17 (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|)) (.cse18 (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)))) (store .cse17 .cse18 (+ (select .cse17 .cse18) 5)))) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) .cse15 .cse13) (or .cse14 (not .cse16) (let ((.cse25 (select (select (store .cse26 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse23 .cse24))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (let ((.cse20 (= 6 .cse25))) (and (or .cse19 .cse20) (or (let ((.cse21 (select (select (store .cse26 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse27 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse22 .cse23 .cse24 .cse25))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= (* 6 c_~N~0) (+ .cse21 .cse22 .cse23 .cse24 .cse25)) (= .cse21 6))) (not .cse20)))))))))))))) (or .cse0 (and (forall ((v_ArrVal_711 Int)) (let ((.cse52 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711))) (let ((.cse49 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse52))) (let ((.cse50 (select .cse49 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse45 (select .cse50 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse48 (select .cse52 |c_ULTIMATE.start_main_~a~0#1.offset|))) (let ((.cse46 (select (select (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse45 .cse48))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (let ((.cse47 (select (select (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse45 .cse46 .cse48))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (let ((.cse51 (= 6 .cse47))) (and (or (let ((.cse44 (select (select (store .cse49 |c_ULTIMATE.start_main_~#sum~0#1.base| (store .cse50 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse45 .cse46 .cse47 .cse48))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= 6 .cse44) (= (* 6 c_~N~0) (+ .cse45 .cse46 .cse47 .cse44 .cse48)))) (not .cse51)) (or (and (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 6)) (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))) .cse51)))) (not (= .cse46 6)) (not (= 6 .cse48))))))))) (forall ((v_ArrVal_711 Int)) (or (= 6 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711) |c_ULTIMATE.start_main_~a~0#1.offset|)) (forall ((v_ArrVal_715 (Array Int Int))) (let ((.cse58 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)))) (let ((.cse53 (select (select (store .cse58 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)))) (or (not (= .cse53 6)) (let ((.cse55 (select v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse56 (select (select (store .cse58 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse53 .cse55))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (let ((.cse54 (= .cse56 6))) (and (or .cse54 (and (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 6)) (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (or (not .cse54) (let ((.cse57 (select (select (store .cse58 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_715 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse53 .cse55 .cse56))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= (* 6 c_~N~0) (+ .cse53 .cse55 .cse56 .cse57)) (= 6 .cse57)))))))))))))) (forall ((v_ArrVal_711 Int)) (or (= 6 (select (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711) |c_ULTIMATE.start_main_~a~0#1.offset|)) (forall ((v_ArrVal_715 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_715) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6)) (and (forall ((v_ArrVal_719 (Array Int Int))) (let ((.cse62 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)))) (let ((.cse59 (select (select (store .cse62 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (or (not (= 6 .cse59)) (let ((.cse61 (select v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse60 (select (select (store .cse62 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse61 .cse59))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= (* 6 c_~N~0) (+ .cse60 .cse61 .cse59)) (= .cse60 6)))))))) (or (forall ((v_ArrVal_719 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (and (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 6)) (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))))) (forall ((v_ArrVal_711 Int)) (let ((.cse66 (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711))) (let ((.cse65 (select .cse66 |c_ULTIMATE.start_main_~a~0#1.offset|))) (or (= (select (select (let ((.cse63 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| .cse66))) (store .cse63 |c_ULTIMATE.start_main_~#sum~0#1.base| (let ((.cse64 (select .cse63 |c_ULTIMATE.start_main_~#sum~0#1.base|))) (store .cse64 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ (select .cse64 |c_ULTIMATE.start_main_~#sum~0#1.offset|) .cse65))))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 4)) 6) (and (forall ((v_ArrVal_719 (Array Int Int))) (let ((.cse70 (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)))) (let ((.cse67 (select (select (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (or (not (= 6 .cse67)) (let ((.cse69 (select v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset|))) (let ((.cse68 (select (select (store .cse70 |c_ULTIMATE.start_main_~#sum~0#1.base| (store v_ArrVal_719 |c_ULTIMATE.start_main_~#sum~0#1.offset| (+ .cse69 .cse67))) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)))) (and (= (* 6 c_~N~0) (+ .cse68 .cse69 .cse67)) (= .cse68 6)))))))) (or (forall ((v_ArrVal_719 (Array Int Int))) (= 6 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_719) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 8)))) (and (forall ((v_ArrVal_722 (Array Int Int))) (= (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) 6)) (forall ((v_ArrVal_722 (Array Int Int))) (= (* 6 c_~N~0) (+ (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| (* |c_ULTIMATE.start_main_~i~0#1| 4)) v_ArrVal_711)) |c_ULTIMATE.start_main_~#sum~0#1.base| v_ArrVal_722) |c_ULTIMATE.start_main_~a~0#1.base|) (+ |c_ULTIMATE.start_main_~a~0#1.offset| 12)) (select v_ArrVal_722 |c_ULTIMATE.start_main_~#sum~0#1.offset|))))))) (not (= 6 .cse65)))))))))))) is different from false [2021-11-25 20:42:05,137 WARN L227 SmtUtils]: Spent 8.65s on a formula simplification. DAG size of input: 26 DAG size of output: 23 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 20:42:05,138 INFO L354 Elim1Store]: treesize reduction 19, result has 68.3 percent of original size [2021-11-25 20:42:05,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 4651 treesize of output 2055 [2021-11-25 20:43:29,253 WARN L227 SmtUtils]: Spent 54.30s on a formula simplification. DAG size of input: 61 DAG size of output: 49 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-25 20:43:29,253 INFO L354 Elim1Store]: treesize reduction 65, result has 64.3 percent of original size [2021-11-25 20:43:29,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 13 case distinctions, treesize of input 3183 treesize of output 2104 [2021-11-25 20:43:41,518 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:43:42,399 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:43:45,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:44:24,201 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:44:25,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:44:34,567 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:45:15,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:45:15,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:45:16,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:45:31,634 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:45:32,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:45:48,477 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:46:05,347 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:46:06,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:46:09,838 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-25 20:46:40,152 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-25 20:46:40,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:46:40,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625674042] [2021-11-25 20:46:40,153 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 20:46:40,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695267743] [2021-11-25 20:46:40,153 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-25 20:46:40,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1841856373] [2021-11-25 20:46:40,155 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-25 20:46:40,155 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 20:46:40,155 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 20:46:40,155 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 20:46:40,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 20:46:40,157 FATAL L? ?]: Ignoring exception! de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.convertIOException(Executor.java:312) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:158) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.push(Scriptor.java:132) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.push(DiffWrapperScript.java:90) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.push(WrapperScript.java:148) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.push(HistoryRecordingScript.java:107) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:48) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.checkSatTerm(SmtUtils.java:267) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.isFalse(SymbolicTools.java:221) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.RelationCheckUtil.isEqBottom_SolverAlphaSolver(RelationCheckUtil.java:56) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.ExplicitValueDomain.isEqBottom(ExplicitValueDomain.java:73) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.CompoundDomain.isEqBottom(CompoundDomain.java:84) at de.uni_freiburg.informatik.ultimate.lib.sifa.domain.StatsWrapperDomain.isEqBottom(StatsWrapperDomain.java:69) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.earlyExitAfterStep(DagInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:125) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: java.io.IOException: Broken pipe at java.base/java.io.FileOutputStream.writeBytes(Native Method) at java.base/java.io.FileOutputStream.write(FileOutputStream.java:354) at java.base/java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:81) at java.base/java.io.BufferedOutputStream.flush(BufferedOutputStream.java:142) at java.base/sun.nio.cs.StreamEncoder.implFlush(StreamEncoder.java:318) at java.base/sun.nio.cs.StreamEncoder.flush(StreamEncoder.java:153) at java.base/java.io.OutputStreamWriter.flush(OutputStreamWriter.java:251) at java.base/java.io.BufferedWriter.flush(BufferedWriter.java:257) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.input(Executor.java:156) ... 45 more [2021-11-25 20:46:40,159 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:46:40,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-25 20:46:40,160 ERROR L172 FreeRefinementEngine]: Strategy SIFA_TAIPAN failed to provide any proof altough trace is infeasible [2021-11-25 20:46:40,160 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-25 20:46:40,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-25 20:46:40,166 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-25 20:46:40,191 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:46:40,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:46:40,395 INFO L732 BasicCegarLoop]: Path program histogram: [10, 1, 1] [2021-11-25 20:46:40,397 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-25 20:46:40,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 08:46:40 BoogieIcfgContainer [2021-11-25 20:46:40,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-25 20:46:40,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-25 20:46:40,417 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-25 20:46:40,417 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-25 20:46:40,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:34:02" (3/4) ... [2021-11-25 20:46:40,430 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-25 20:46:40,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-25 20:46:40,430 INFO L158 Benchmark]: Toolchain (without parser) took 759156.85ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 62.5MB in the beginning and 43.3MB in the end (delta: 19.3MB). Peak memory consumption was 64.4MB. Max. memory is 16.1GB. [2021-11-25 20:46:40,430 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 67.1MB in the beginning and 67.1MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:46:40,431 INFO L158 Benchmark]: CACSL2BoogieTranslator took 340.30ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 71.5MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-25 20:46:40,431 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.15ms. Allocated memory is still 96.5MB. Free memory was 71.5MB in the beginning and 69.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:46:40,431 INFO L158 Benchmark]: Boogie Preprocessor took 56.16ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:46:40,431 INFO L158 Benchmark]: RCFGBuilder took 485.27ms. Allocated memory is still 96.5MB. Free memory was 68.6MB in the beginning and 55.5MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-25 20:46:40,432 INFO L158 Benchmark]: TraceAbstraction took 758196.94ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 55.2MB in the beginning and 43.3MB in the end (delta: 11.9MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. [2021-11-25 20:46:40,432 INFO L158 Benchmark]: Witness Printer took 13.08ms. Allocated memory is still 142.6MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-25 20:46:40,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 96.5MB. Free memory was 67.1MB in the beginning and 67.1MB in the end (delta: 25.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 340.30ms. Allocated memory is still 96.5MB. Free memory was 62.3MB in the beginning and 71.5MB in the end (delta: -9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.15ms. Allocated memory is still 96.5MB. Free memory was 71.5MB in the beginning and 69.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 56.16ms. Allocated memory is still 96.5MB. Free memory was 69.8MB in the beginning and 68.6MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 485.27ms. Allocated memory is still 96.5MB. Free memory was 68.6MB in the beginning and 55.5MB in the end (delta: 13.1MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 758196.94ms. Allocated memory was 96.5MB in the beginning and 142.6MB in the end (delta: 46.1MB). Free memory was 55.2MB in the beginning and 43.3MB in the end (delta: 11.9MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. * Witness Printer took 13.08ms. Allocated memory is still 142.6MB. Free memory is still 43.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND TRUE !cond [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7 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 -> adec1fb94d6967416fde705f346e339b2564f221f40b7d50198f8ed5e502aa54 [2021-11-25 20:46:43,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:46:43,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:46:43,085 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:46:43,086 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:46:43,087 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:46:43,088 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-fpi/s52if.c [2021-11-25 20:46:43,151 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/data/8b239a0e1/462efd75d18342db9507201568ba078f/FLAG1017ef3c9 [2021-11-25 20:46:43,623 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:46:43,623 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/sv-benchmarks/c/array-fpi/s52if.c [2021-11-25 20:46:43,632 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/data/8b239a0e1/462efd75d18342db9507201568ba078f/FLAG1017ef3c9 [2021-11-25 20:46:44,026 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/data/8b239a0e1/462efd75d18342db9507201568ba078f [2021-11-25 20:46:44,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:46:44,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:46:44,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:46:44,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:46:44,041 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:46:44,042 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3213f696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44, skipping insertion in model container [2021-11-25 20:46:44,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:46:44,064 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:46:44,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/sv-benchmarks/c/array-fpi/s52if.c[588,601] [2021-11-25 20:46:44,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:46:44,229 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:46:44,242 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/sv-benchmarks/c/array-fpi/s52if.c[588,601] [2021-11-25 20:46:44,254 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:46:44,270 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:46:44,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44 WrapperNode [2021-11-25 20:46:44,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:46:44,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:46:44,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:46:44,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:46:44,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,327 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,363 INFO L137 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 89 [2021-11-25 20:46:44,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:46:44,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:46:44,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:46:44,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:46:44,372 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:46:44,394 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:46:44,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:46:44,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:46:44,395 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (1/1) ... [2021-11-25 20:46:44,402 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:46:44,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:46:44,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:46:44,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:46:44,470 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:46:44,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-25 20:46:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:46:44,471 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-25 20:46:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-25 20:46:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-25 20:46:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:46:44,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:46:44,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-25 20:46:44,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:46:44,473 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-25 20:46:44,588 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:46:44,597 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:46:44,928 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:46:44,934 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:46:44,935 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-11-25 20:46:44,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:44 BoogieIcfgContainer [2021-11-25 20:46:44,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:46:44,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:46:44,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:46:44,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:46:44,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:46:44" (1/3) ... [2021-11-25 20:46:44,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539739b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:44, skipping insertion in model container [2021-11-25 20:46:44,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:46:44" (2/3) ... [2021-11-25 20:46:44,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539739b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:46:44, skipping insertion in model container [2021-11-25 20:46:44,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:46:44" (3/3) ... [2021-11-25 20:46:44,945 INFO L111 eAbstractionObserver]: Analyzing ICFG s52if.c [2021-11-25 20:46:44,949 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:46:44,950 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:46:44,996 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:46:45,003 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 20:46:45,003 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 20:46:45,016 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:46:45,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:46:45,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:46:45,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:46:45,023 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:46:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:46:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash -845308063, now seen corresponding path program 1 times [2021-11-25 20:46:45,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:46:45,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1168943017] [2021-11-25 20:46:45,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:46:45,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:46:45,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:46:45,056 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:46:45,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-25 20:46:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:46:45,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 20:46:45,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:46:45,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:46:45,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:46:45,200 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:46:45,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1168943017] [2021-11-25 20:46:45,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1168943017] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:46:45,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:46:45,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 20:46:45,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100770582] [2021-11-25 20:46:45,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:46:45,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 20:46:45,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:46:45,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 20:46:45,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:46:45,236 INFO L87 Difference]: Start difference. First operand has 23 states, 21 states have (on average 1.5714285714285714) internal successors, (33), 22 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:46:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:46:45,249 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2021-11-25 20:46:45,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 20:46:45,250 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 20:46:45,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:46:45,256 INFO L225 Difference]: With dead ends: 42 [2021-11-25 20:46:45,256 INFO L226 Difference]: Without dead ends: 19 [2021-11-25 20:46:45,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 20:46:45,261 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 20:46:45,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 20:46:45,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-11-25 20:46:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-11-25 20:46:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:46:45,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2021-11-25 20:46:45,292 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 13 [2021-11-25 20:46:45,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:46:45,292 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2021-11-25 20:46:45,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:46:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2021-11-25 20:46:45,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-25 20:46:45,294 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:46:45,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:46:45,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-25 20:46:45,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:46:45,506 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:46:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:46:45,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1238662774, now seen corresponding path program 1 times [2021-11-25 20:46:45,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:46:45,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781713210] [2021-11-25 20:46:45,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:46:45,515 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:46:45,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:46:45,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:46:45,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-25 20:46:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:46:45,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-25 20:46:45,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:46:45,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:46:45,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 20:46:45,815 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:46:45,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781713210] [2021-11-25 20:46:45,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781713210] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:46:45,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:46:45,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 20:46:45,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745404518] [2021-11-25 20:46:45,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:46:45,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:46:45,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:46:45,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:46:45,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:46:45,819 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:46:46,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:46:46,173 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2021-11-25 20:46:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:46:46,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-25 20:46:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:46:46,181 INFO L225 Difference]: With dead ends: 39 [2021-11-25 20:46:46,181 INFO L226 Difference]: Without dead ends: 27 [2021-11-25 20:46:46,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:46:46,183 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 60 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:46:46,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 9 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:46:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-25 20:46:46,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2021-11-25 20:46:46,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 21 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:46:46,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-11-25 20:46:46,191 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 13 [2021-11-25 20:46:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:46:46,191 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-11-25 20:46:46,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:46:46,192 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-11-25 20:46:46,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:46:46,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:46:46,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:46:46,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-25 20:46:46,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:46:46,405 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:46:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:46:46,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1944018757, now seen corresponding path program 1 times [2021-11-25 20:46:46,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:46:46,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822263372] [2021-11-25 20:46:46,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:46:46,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:46:46,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:46:46,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:46:46,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-25 20:46:46,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:46:46,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 29 conjunts are in the unsatisfiable core [2021-11-25 20:46:46,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:46:46,763 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:46:46,785 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-25 20:46:46,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 20:46:46,806 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 18 [2021-11-25 20:46:46,923 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 20:46:46,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35 [2021-11-25 20:46:47,360 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 20:46:47,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 42 treesize of output 36 [2021-11-25 20:46:47,728 INFO L354 Elim1Store]: treesize reduction 37, result has 26.0 percent of original size [2021-11-25 20:46:47,729 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 81 treesize of output 46 [2021-11-25 20:46:48,010 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 20:46:48,010 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 50 [2021-11-25 20:46:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:46:48,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:46:52,496 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:46:52,501 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:46:52,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:46:52,503 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:46:52,577 INFO L354 Elim1Store]: treesize reduction 24, result has 52.9 percent of original size [2021-11-25 20:46:52,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 178 treesize of output 128 [2021-11-25 20:46:52,588 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:46:52,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 128 treesize of output 118 [2021-11-25 20:46:52,615 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 20:46:52,616 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 152 treesize of output 146 [2021-11-25 20:46:52,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:46:52,935 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:46:52,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822263372] [2021-11-25 20:46:52,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822263372] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:46:52,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [448582385] [2021-11-25 20:46:52,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:46:52,937 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:46:52,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:46:52,952 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:46:52,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-25 20:46:53,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:46:53,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-25 20:46:53,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:46:53,223 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:46:53,225 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:46:53,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 19 [2021-11-25 20:46:53,442 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-11-25 20:46:53,442 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2021-11-25 20:46:53,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:46:53,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2021-11-25 20:46:54,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:46:54,390 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-11-25 20:46:54,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 36 [2021-11-25 20:46:54,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:46:54,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:46:54,926 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 0 case distinctions, treesize of input 82 treesize of output 47 [2021-11-25 20:46:55,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:46:55,292 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 52 [2021-11-25 20:46:55,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:46:55,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:01,769 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:47:01,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 96 [2021-11-25 20:47:04,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:47:04,222 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-25 20:47:04,223 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 172 treesize of output 100 [2021-11-25 20:47:04,231 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:47:04,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 61 [2021-11-25 20:47:04,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 31 [2021-11-25 20:47:04,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:47:04,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [448582385] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:04,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47789051] [2021-11-25 20:47:04,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:47:04,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:47:04,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:47:04,371 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:47:04,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 20:47:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:47:04,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 26 conjunts are in the unsatisfiable core [2021-11-25 20:47:04,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:04,488 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-11-25 20:47:04,514 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:47:04,525 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-25 20:47:04,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 20:47:04,570 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 20:47:04,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 20:47:05,272 INFO L354 Elim1Store]: treesize reduction 37, result has 26.0 percent of original size [2021-11-25 20:47:05,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 93 treesize of output 50 [2021-11-25 20:47:05,818 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 20:47:05,818 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 84 treesize of output 50 [2021-11-25 20:47:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:05,841 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:08,386 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_88 (Array (_ BitVec 32) (_ BitVec 32))) (|ULTIMATE.start_main_~i~0#1| (_ BitVec 32)) (|ULTIMATE.start_main_~a~0#1.offset| (_ BitVec 32))) (let ((.cse4 (select v_ArrVal_88 (bvadd (bvmul |ULTIMATE.start_main_~i~0#1| (_ bv4 32)) |ULTIMATE.start_main_~a~0#1.offset|)))) (or (= ((_ sign_extend 32) (bvmul c_~N~0 (_ bv6 32))) (let ((.cse3 (bvadd (_ bv4 32) |c_ULTIMATE.start_main_~#sum~0#1.offset|)) (.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~a~0#1.base| v_ArrVal_88) |c_ULTIMATE.start_main_~#sum~0#1.base|))) (let ((.cse2 (bvadd (concat (select .cse1 .cse3) (select .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset|)) ((_ sign_extend 32) .cse4)))) (let ((.cse0 ((_ extract 63 32) .cse2))) (concat .cse0 (select (store (store .cse1 |c_ULTIMATE.start_main_~#sum~0#1.offset| ((_ extract 31 0) .cse2)) .cse3 .cse0) |c_ULTIMATE.start_main_~#sum~0#1.offset|)))))) (not (= (_ bv6 32) .cse4))))) is different from false [2021-11-25 20:47:13,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 20:47:13,419 INFO L354 Elim1Store]: treesize reduction 24, result has 44.2 percent of original size [2021-11-25 20:47:13,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 212 treesize of output 126 [2021-11-25 20:47:13,435 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:47:13,438 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 87 [2021-11-25 20:47:13,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 59 [2021-11-25 20:47:13,456 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 20:47:13,456 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 62 [2021-11-25 20:47:13,501 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2021-11-25 20:47:13,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47789051] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:13,501 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:47:13,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10, 13, 10, 11] total 46 [2021-11-25 20:47:13,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666472002] [2021-11-25 20:47:13,502 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:47:13,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-25 20:47:13,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:47:13,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-25 20:47:13,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1616, Unknown=23, NotChecked=86, Total=2070 [2021-11-25 20:47:13,507 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 46 states, 46 states have (on average 2.0) internal successors, (92), 46 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:15,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:47:15,470 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2021-11-25 20:47:15,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 20:47:15,470 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 2.0) internal successors, (92), 46 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-25 20:47:15,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:47:15,473 INFO L225 Difference]: With dead ends: 47 [2021-11-25 20:47:15,473 INFO L226 Difference]: Without dead ends: 42 [2021-11-25 20:47:15,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=533, Invalid=2204, Unknown=23, NotChecked=102, Total=2862 [2021-11-25 20:47:15,475 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:47:15,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 92 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 82 Invalid, 0 Unknown, 88 Unchecked, 0.5s Time] [2021-11-25 20:47:15,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-25 20:47:15,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-11-25 20:47:15,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:15,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-11-25 20:47:15,484 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 21 [2021-11-25 20:47:15,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:47:15,485 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-11-25 20:47:15,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 2.0) internal successors, (92), 46 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:15,485 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-11-25 20:47:15,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-11-25 20:47:15,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:47:15,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:47:15,498 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:15,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:15,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:16,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:47:16,101 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:47:16,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:47:16,103 INFO L85 PathProgramCache]: Analyzing trace with hash 2001277059, now seen corresponding path program 1 times [2021-11-25 20:47:16,105 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:47:16,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1413779447] [2021-11-25 20:47:16,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:47:16,107 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:47:16,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:47:16,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:47:16,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-25 20:47:16,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:47:16,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 20:47:16,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:16,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 20:47:16,318 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 20:47:16,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 20:47:16,401 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:47:16,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:16,546 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-25 20:47:16,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-11-25 20:47:16,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:47:16,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:47:16,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1413779447] [2021-11-25 20:47:16,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1413779447] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:16,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [135124408] [2021-11-25 20:47:16,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:47:16,585 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:47:16,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:47:16,586 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:47:16,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-25 20:47:16,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:47:16,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:47:16,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:16,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-25 20:47:16,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 20:47:17,023 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 20:47:17,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:47:17,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:17,112 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2021-11-25 20:47:17,115 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-11-25 20:47:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:47:17,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [135124408] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:17,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370096355] [2021-11-25 20:47:17,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:47:17,128 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:47:17,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:47:17,132 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:47:17,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-25 20:47:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:47:17,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:47:17,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:17,330 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-11-25 20:47:17,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-25 20:47:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:17,386 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:17,526 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2021-11-25 20:47:17,533 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-25 20:47:17,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 30 [2021-11-25 20:47:17,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:17,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370096355] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:17,549 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:47:17,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 7] total 19 [2021-11-25 20:47:17,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476491336] [2021-11-25 20:47:17,549 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:47:17,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-11-25 20:47:17,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:47:17,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-11-25 20:47:17,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:47:17,551 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:18,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:47:18,440 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2021-11-25 20:47:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:47:18,449 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2021-11-25 20:47:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:47:18,450 INFO L225 Difference]: With dead ends: 64 [2021-11-25 20:47:18,450 INFO L226 Difference]: Without dead ends: 52 [2021-11-25 20:47:18,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:47:18,452 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:47:18,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 76 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:47:18,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-11-25 20:47:18,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2021-11-25 20:47:18,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 46 states have (on average 1.3043478260869565) internal successors, (60), 46 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:18,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2021-11-25 20:47:18,463 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 21 [2021-11-25 20:47:18,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:47:18,463 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2021-11-25 20:47:18,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) internal successors, (53), 19 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:18,464 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2021-11-25 20:47:18,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-11-25 20:47:18,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:47:18,465 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:47:18,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:18,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:18,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:19,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt [2021-11-25 20:47:19,079 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:47:19,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:47:19,082 INFO L85 PathProgramCache]: Analyzing trace with hash -823792505, now seen corresponding path program 2 times [2021-11-25 20:47:19,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:47:19,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974932118] [2021-11-25 20:47:19,085 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:47:19,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:47:19,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:47:19,090 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:47:19,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-25 20:47:19,194 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:47:19,194 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:47:19,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-25 20:47:19,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:19,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:19,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:20,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:20,007 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:47:20,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974932118] [2021-11-25 20:47:20,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974932118] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:20,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [890878788] [2021-11-25 20:47:20,008 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:47:20,008 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:47:20,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:47:20,012 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:47:20,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-25 20:47:20,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:47:20,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:47:20,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 20:47:20,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:20,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:20,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:20,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:20,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [890878788] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:20,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590000601] [2021-11-25 20:47:20,609 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-25 20:47:20,609 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:47:20,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:47:20,610 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:47:20,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-25 20:47:20,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-25 20:47:20,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:47:20,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:47:20,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:20,917 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:20,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:21,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590000601] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:21,017 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:47:21,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9, 7, 8, 7] total 27 [2021-11-25 20:47:21,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432719306] [2021-11-25 20:47:21,017 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:47:21,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-11-25 20:47:21,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:47:21,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-11-25 20:47:21,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:47:21,019 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:23,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:47:23,008 INFO L93 Difference]: Finished difference Result 116 states and 149 transitions. [2021-11-25 20:47:23,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:47:23,009 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2021-11-25 20:47:23,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:47:23,010 INFO L225 Difference]: With dead ends: 116 [2021-11-25 20:47:23,010 INFO L226 Difference]: Without dead ends: 98 [2021-11-25 20:47:23,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 106 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=410, Invalid=1072, Unknown=0, NotChecked=0, Total=1482 [2021-11-25 20:47:23,012 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 264 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:47:23,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [264 Valid, 27 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-25 20:47:23,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-11-25 20:47:23,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 62. [2021-11-25 20:47:23,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2459016393442623) internal successors, (76), 61 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:23,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2021-11-25 20:47:23,026 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 23 [2021-11-25 20:47:23,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:47:23,026 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2021-11-25 20:47:23,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.814814814814815) internal successors, (76), 27 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:23,027 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2021-11-25 20:47:23,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-11-25 20:47:23,028 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:47:23,028 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:47:23,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:23,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:23,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:23,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 [2021-11-25 20:47:23,643 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:47:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:47:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1832157868, now seen corresponding path program 3 times [2021-11-25 20:47:23,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:47:23,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [130520860] [2021-11-25 20:47:23,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:47:23,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:47:23,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:47:23,647 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:47:23,664 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-25 20:47:23,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 20:47:23,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:47:23,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 20:47:23,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:24,069 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:24,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:24,285 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-25 20:47:24,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [130520860] [2021-11-25 20:47:24,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [130520860] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:24,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [93992723] [2021-11-25 20:47:24,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:47:24,285 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-25 20:47:24,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 [2021-11-25 20:47:24,286 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-25 20:47:24,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-25 20:47:24,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 20:47:24,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:47:24,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-25 20:47:24,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:24,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:24,691 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:24,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [93992723] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:24,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534448257] [2021-11-25 20:47:24,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 20:47:24,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:47:24,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:47:24,696 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 20:47:24,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-25 20:47:24,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-25 20:47:24,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:47:24,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-25 20:47:24,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:25,014 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 20:47:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-25 20:47:25,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1534448257] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 20:47:25,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-25 20:47:25,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9, 7, 8, 7] total 17 [2021-11-25 20:47:25,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169422438] [2021-11-25 20:47:25,111 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-25 20:47:25,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-25 20:47:25,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-25 20:47:25,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-25 20:47:25,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:47:25,112 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:26,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:47:26,105 INFO L93 Difference]: Finished difference Result 101 states and 125 transitions. [2021-11-25 20:47:26,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-25 20:47:26,106 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-11-25 20:47:26,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:47:26,106 INFO L225 Difference]: With dead ends: 101 [2021-11-25 20:47:26,107 INFO L226 Difference]: Without dead ends: 59 [2021-11-25 20:47:26,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=405, Unknown=0, NotChecked=0, Total=552 [2021-11-25 20:47:26,109 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 99 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:47:26,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 23 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:47:26,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-25 20:47:26,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-11-25 20:47:26,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 56 states have (on average 1.2321428571428572) internal successors, (69), 56 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2021-11-25 20:47:26,121 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 24 [2021-11-25 20:47:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:47:26,121 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2021-11-25 20:47:26,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.7058823529411766) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:47:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2021-11-25 20:47:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 20:47:26,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:47:26,123 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:47:26,128 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2021-11-25 20:47:26,353 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:26,584 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-25 20:47:26,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 20:47:26,727 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 20:47:26,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:47:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash -14433298, now seen corresponding path program 4 times [2021-11-25 20:47:26,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-25 20:47:26,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1297628009] [2021-11-25 20:47:26,730 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 20:47:26,731 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-25 20:47:26,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat [2021-11-25 20:47:26,738 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-25 20:47:26,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b676d3e-2aba-4df7-9724-d1886a62471a/bin/utaipan-eEHZpOm5b7/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-25 20:47:26,871 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 20:47:26,872 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 20:47:26,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 43 conjunts are in the unsatisfiable core [2021-11-25 20:47:26,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 20:47:26,986 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 20:47:27,000 INFO L354 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2021-11-25 20:47:27,000 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 18 [2021-11-25 20:47:27,017 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-11-25 20:47:27,122 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 20:47:27,231 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 24 [2021-11-25 20:47:27,631 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-11-25 20:47:27,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 40 [2021-11-25 20:47:28,037 INFO L354 Elim1Store]: treesize reduction 43, result has 14.0 percent of original size [2021-11-25 20:47:28,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 48 [2021-11-25 20:47:28,489 INFO L354 Elim1Store]: treesize reduction 73, result has 15.1 percent of original size [2021-11-25 20:47:28,490 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 69 [2021-11-25 20:47:28,939 INFO L354 Elim1Store]: treesize reduction 47, result has 21.7 percent of original size [2021-11-25 20:47:28,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 115 treesize of output 71 [2021-11-25 20:47:29,275 INFO L354 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2021-11-25 20:47:29,276 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 79 [2021-11-25 20:47:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:47:29,352 INFO L328 TraceCheckSpWp]: Computing backward predicates...