./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array23_pattern.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_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/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_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array23_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/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_ded077e0-230b-4815-93e6-c6eeb7d0f28e/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 e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:44:08,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:44:08,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:44:09,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:44:09,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:44:09,010 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:44:09,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:44:09,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:44:09,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:44:09,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:44:09,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:44:09,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:44:09,021 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:44:09,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:44:09,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:44:09,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:44:09,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:44:09,028 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:44:09,030 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:44:09,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:44:09,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:44:09,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:44:09,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:44:09,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:44:09,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:44:09,052 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:44:09,052 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:44:09,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:44:09,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:44:09,055 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:44:09,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:44:09,057 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:44:09,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:44:09,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:44:09,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:44:09,067 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:44:09,068 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:44:09,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:44:09,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:44:09,069 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:44:09,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:44:09,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:44:09,124 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:44:09,124 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:44:09,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:44:09,125 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:44:09,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:44:09,126 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:44:09,126 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:44:09,126 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:44:09,126 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:44:09,126 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:44:09,127 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:44:09,127 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:44:09,127 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:44:09,127 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:44:09,127 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:44:09,128 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:44:09,128 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:44:09,128 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:44:09,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:44:09,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:44:09,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:44:09,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:44:09,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:44:09,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:44:09,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:44:09,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:44:09,130 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:44:09,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:44:09,130 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:44:09,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:44:09,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:44:09,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:44:09,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:44:09,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:44:09,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:44:09,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:44:09,132 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:44:09,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:44:09,132 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:44:09,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:44:09,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:44:09,133 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_ded077e0-230b-4815-93e6-c6eeb7d0f28e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6bb9e1c9705c406859f1248122e92b7c01da6449c586b213f4fa087ea45e218 [2021-11-25 19:44:09,424 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:44:09,446 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:44:09,448 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:44:09,450 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:44:09,451 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:44:09,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/array-patterns/array23_pattern.c [2021-11-25 19:44:09,554 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/data/12cfbf6e6/edafad1156a349998096613dc5088349/FLAG02b1a33bc [2021-11-25 19:44:10,022 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:44:10,022 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/sv-benchmarks/c/array-patterns/array23_pattern.c [2021-11-25 19:44:10,029 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/data/12cfbf6e6/edafad1156a349998096613dc5088349/FLAG02b1a33bc [2021-11-25 19:44:10,413 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/data/12cfbf6e6/edafad1156a349998096613dc5088349 [2021-11-25 19:44:10,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:44:10,418 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:44:10,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:44:10,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:44:10,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:44:10,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f790887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10, skipping insertion in model container [2021-11-25 19:44:10,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,436 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:44:10,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:44:10,587 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_ded077e0-230b-4815-93e6-c6eeb7d0f28e/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2021-11-25 19:44:10,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:44:10,620 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:44:10,632 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_ded077e0-230b-4815-93e6-c6eeb7d0f28e/sv-benchmarks/c/array-patterns/array23_pattern.c[1347,1360] [2021-11-25 19:44:10,645 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:44:10,657 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:44:10,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10 WrapperNode [2021-11-25 19:44:10,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:44:10,659 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:44:10,659 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:44:10,659 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:44:10,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,673 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,711 INFO L137 Inliner]: procedures = 17, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 108 [2021-11-25 19:44:10,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:44:10,712 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:44:10,712 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:44:10,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:44:10,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,782 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:44:10,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:44:10,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:44:10,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:44:10,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (1/1) ... [2021-11-25 19:44:10,808 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:44:10,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:10,841 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:44:10,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:44:10,899 INFO L130 BoogieDeclarations]: Found specification of procedure outerBoundaryPatternCheck [2021-11-25 19:44:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure outerBoundaryPatternCheck [2021-11-25 19:44:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:44:10,900 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-25 19:44:10,900 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-25 19:44:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:44:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 19:44:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 19:44:10,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:44:10,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:44:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 19:44:10,902 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 19:44:11,002 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:44:11,006 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:44:11,194 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:44:11,276 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:44:11,277 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-25 19:44:11,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:44:11 BoogieIcfgContainer [2021-11-25 19:44:11,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:44:11,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:44:11,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:44:11,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:44:11,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:44:10" (1/3) ... [2021-11-25 19:44:11,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6970beeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:44:11, skipping insertion in model container [2021-11-25 19:44:11,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:44:10" (2/3) ... [2021-11-25 19:44:11,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6970beeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:44:11, skipping insertion in model container [2021-11-25 19:44:11,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:44:11" (3/3) ... [2021-11-25 19:44:11,290 INFO L111 eAbstractionObserver]: Analyzing ICFG array23_pattern.c [2021-11-25 19:44:11,295 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:44:11,296 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:44:11,348 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:44:11,356 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 19:44:11,371 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:44:11,396 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:44:11,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-25 19:44:11,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:11,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:11,402 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:44:11,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:11,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1938318667, now seen corresponding path program 1 times [2021-11-25 19:44:11,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:11,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879285001] [2021-11-25 19:44:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:11,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:11,514 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:44:11,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [943775800] [2021-11-25 19:44:11,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:11,528 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:11,528 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:11,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:11,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:44:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:11,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-25 19:44:11,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:11,702 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 19:44:11,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:44:11,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:11,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879285001] [2021-11-25 19:44:11,703 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:44:11,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [943775800] [2021-11-25 19:44:11,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [943775800] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:44:11,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:44:11,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:44:11,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127994689] [2021-11-25 19:44:11,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:44:11,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:44:11,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:11,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:44:11,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:44:11,755 INFO L87 Difference]: Start difference. First operand has 25 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:44:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:11,820 INFO L93 Difference]: Finished difference Result 33 states and 44 transitions. [2021-11-25 19:44:11,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:44:11,823 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-11-25 19:44:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:11,831 INFO L225 Difference]: With dead ends: 33 [2021-11-25 19:44:11,831 INFO L226 Difference]: Without dead ends: 23 [2021-11-25 19:44:11,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 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 19:44:11,840 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:11,853 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:44:11,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-25 19:44:11,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-25 19:44:11,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:44:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2021-11-25 19:44:11,940 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2021-11-25 19:44:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:11,941 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2021-11-25 19:44:11,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-25 19:44:11,942 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2021-11-25 19:44:11,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-25 19:44:11,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:11,950 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:11,988 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:44:12,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-25 19:44:12,176 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:44:12,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:12,177 INFO L85 PathProgramCache]: Analyzing trace with hash -651899950, now seen corresponding path program 1 times [2021-11-25 19:44:12,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:12,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356544790] [2021-11-25 19:44:12,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:12,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:12,195 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:44:12,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14784622] [2021-11-25 19:44:12,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:12,196 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:12,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:12,205 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:12,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:44:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:12,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-25 19:44:12,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:44:12,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:44:12,442 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:12,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356544790] [2021-11-25 19:44:12,442 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:44:12,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14784622] [2021-11-25 19:44:12,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14784622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:44:12,443 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:44:12,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:44:12,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566298055] [2021-11-25 19:44:12,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:44:12,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:44:12,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:12,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:44:12,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:44:12,446 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:44:12,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:12,496 INFO L93 Difference]: Finished difference Result 28 states and 36 transitions. [2021-11-25 19:44:12,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:44:12,497 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 26 [2021-11-25 19:44:12,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:12,498 INFO L225 Difference]: With dead ends: 28 [2021-11-25 19:44:12,498 INFO L226 Difference]: Without dead ends: 25 [2021-11-25 19:44:12,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:44:12,501 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 7 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:12,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 46 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:44:12,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-25 19:44:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-25 19:44:12,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:44:12,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-25 19:44:12,514 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 26 [2021-11-25 19:44:12,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:12,514 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-25 19:44:12,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:44:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-25 19:44:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-11-25 19:44:12,516 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:12,516 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:12,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-25 19:44:12,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:12,717 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:44:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:12,718 INFO L85 PathProgramCache]: Analyzing trace with hash -741748724, now seen corresponding path program 1 times [2021-11-25 19:44:12,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:12,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878839813] [2021-11-25 19:44:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:12,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:12,742 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:44:12,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849170027] [2021-11-25 19:44:12,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:12,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:12,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:12,760 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:12,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-25 19:44:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:12,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:44:12,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:12,932 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-11-25 19:44:12,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:44:12,932 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:12,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878839813] [2021-11-25 19:44:12,932 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:44:12,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849170027] [2021-11-25 19:44:12,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849170027] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:44:12,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:44:12,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:44:12,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417586666] [2021-11-25 19:44:12,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:44:12,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:44:12,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:12,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:44:12,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:44:12,935 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:44:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:13,037 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2021-11-25 19:44:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:44:13,038 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 29 [2021-11-25 19:44:13,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:13,041 INFO L225 Difference]: With dead ends: 51 [2021-11-25 19:44:13,041 INFO L226 Difference]: Without dead ends: 30 [2021-11-25 19:44:13,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:44:13,046 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 12 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:13,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 51 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:44:13,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-25 19:44:13,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-11-25 19:44:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:44:13,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2021-11-25 19:44:13,068 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 29 [2021-11-25 19:44:13,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:13,069 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2021-11-25 19:44:13,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:44:13,070 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2021-11-25 19:44:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-11-25 19:44:13,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:13,074 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:13,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-11-25 19:44:13,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:13,287 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:44:13,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1070521775, now seen corresponding path program 1 times [2021-11-25 19:44:13,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:13,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005944410] [2021-11-25 19:44:13,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:13,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:13,304 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:44:13,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2053049798] [2021-11-25 19:44:13,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:13,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:13,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:13,317 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:13,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-25 19:44:13,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:13,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-25 19:44:13,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:13,510 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:44:13,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:44:13,510 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:13,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005944410] [2021-11-25 19:44:13,511 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:44:13,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053049798] [2021-11-25 19:44:13,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053049798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:44:13,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:44:13,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 19:44:13,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987716721] [2021-11-25 19:44:13,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:44:13,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:44:13,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:13,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:44:13,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-25 19:44:13,520 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:44:13,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:13,595 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2021-11-25 19:44:13,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-25 19:44:13,595 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 31 [2021-11-25 19:44:13,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:13,600 INFO L225 Difference]: With dead ends: 50 [2021-11-25 19:44:13,601 INFO L226 Difference]: Without dead ends: 28 [2021-11-25 19:44:13,603 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:44:13,605 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:13,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 39 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-25 19:44:13,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-11-25 19:44:13,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-11-25 19:44:13,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:44:13,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2021-11-25 19:44:13,611 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 31 [2021-11-25 19:44:13,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:13,611 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2021-11-25 19:44:13,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-25 19:44:13,612 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2021-11-25 19:44:13,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-25 19:44:13,619 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:13,619 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:13,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-25 19:44:13,835 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:13,836 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:44:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:13,836 INFO L85 PathProgramCache]: Analyzing trace with hash 272504613, now seen corresponding path program 1 times [2021-11-25 19:44:13,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:13,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073829296] [2021-11-25 19:44:13,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:13,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:13,850 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:44:13,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [592092751] [2021-11-25 19:44:13,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:13,850 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:13,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:13,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:13,858 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-25 19:44:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:44:13,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:44:13,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-25 19:44:14,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:44:14,250 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-25 19:44:14,250 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:14,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073829296] [2021-11-25 19:44:14,251 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:44:14,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [592092751] [2021-11-25 19:44:14,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [592092751] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:44:14,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [883353174] [2021-11-25 19:44:14,287 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:44:14,288 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:44:14,293 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:44:14,299 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:44:14,300 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:44:14,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:14,494 INFO L354 Elim1Store]: treesize reduction 80, result has 19.2 percent of original size [2021-11-25 19:44:14,496 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 5 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 68 [2021-11-25 19:44:14,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:14,565 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:44:14,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 19:44:14,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:14,639 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 45 treesize of output 47 [2021-11-25 19:44:14,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:14,844 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:14,888 INFO L354 Elim1Store]: treesize reduction 191, result has 17.3 percent of original size [2021-11-25 19:44:14,889 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 4 case distinctions, treesize of input 351 treesize of output 354 [2021-11-25 19:44:15,163 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 34 treesize of output 30 [2021-11-25 19:44:15,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:15,352 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-25 19:44:15,353 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 1 case distinctions, treesize of input 192 treesize of output 194 [2021-11-25 19:44:15,420 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 34 treesize of output 30 [2021-11-25 19:44:15,461 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 30 treesize of output 26 [2021-11-25 19:44:15,521 INFO L354 Elim1Store]: treesize reduction 114, result has 21.9 percent of original size [2021-11-25 19:44:15,522 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 103 treesize of output 108 [2021-11-25 19:44:15,576 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 34 treesize of output 30 [2021-11-25 19:44:15,887 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 84 treesize of output 54 [2021-11-25 19:44:16,327 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 138 treesize of output 80 [2021-11-25 19:44:16,790 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 30 treesize of output 26 [2021-11-25 19:44:16,843 INFO L354 Elim1Store]: treesize reduction 114, result has 21.9 percent of original size [2021-11-25 19:44:16,844 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 103 treesize of output 108 [2021-11-25 19:44:16,888 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 34 treesize of output 30 [2021-11-25 19:44:16,902 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 19:44:16,906 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 76 for LOIs [2021-11-25 19:44:17,004 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:44:18,510 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '925#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (= |ULTIMATE.start_main_~temp~0#1| 0) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~row~0#1|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |ULTIMATE.start_main_~row~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2021-11-25 19:44:18,510 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:44:18,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:44:18,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-25 19:44:18,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986339652] [2021-11-25 19:44:18,511 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:44:18,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:44:18,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:18,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:44:18,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2021-11-25 19:44:18,513 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:44:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:18,641 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2021-11-25 19:44:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-25 19:44:18,642 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 32 [2021-11-25 19:44:18,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:18,643 INFO L225 Difference]: With dead ends: 54 [2021-11-25 19:44:18,643 INFO L226 Difference]: Without dead ends: 31 [2021-11-25 19:44:18,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=119, Invalid=751, Unknown=0, NotChecked=0, Total=870 [2021-11-25 19:44:18,645 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 22 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:18,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 45 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:44:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-25 19:44:18,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-25 19:44:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:44:18,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2021-11-25 19:44:18,654 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 32 [2021-11-25 19:44:18,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:18,654 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2021-11-25 19:44:18,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:44:18,654 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2021-11-25 19:44:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-25 19:44:18,656 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:18,656 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:18,697 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-25 19:44:18,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:18,871 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:44:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:18,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1994024419, now seen corresponding path program 2 times [2021-11-25 19:44:18,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:18,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597958149] [2021-11-25 19:44:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:18,873 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:18,889 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:44:18,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [647237197] [2021-11-25 19:44:18,889 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-25 19:44:18,890 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:18,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:18,903 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:18,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-25 19:44:18,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-25 19:44:18,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:44:18,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-25 19:44:18,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:19,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-25 19:44:19,091 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:44:19,197 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-25 19:44:19,197 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:44:19,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597958149] [2021-11-25 19:44:19,198 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-25 19:44:19,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647237197] [2021-11-25 19:44:19,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647237197] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:44:19,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1593579959] [2021-11-25 19:44:19,203 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2021-11-25 19:44:19,204 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:44:19,205 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:44:19,205 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:44:19,205 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:44:19,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:19,292 INFO L354 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2021-11-25 19:44:19,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 32 treesize of output 49 [2021-11-25 19:44:19,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:19,304 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 0 case distinctions, treesize of input 52 treesize of output 60 [2021-11-25 19:44:19,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:19,344 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 45 treesize of output 47 [2021-11-25 19:44:19,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:19,410 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:19,446 INFO L354 Elim1Store]: treesize reduction 191, result has 17.3 percent of original size [2021-11-25 19:44:19,446 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 4 case distinctions, treesize of input 351 treesize of output 354 [2021-11-25 19:44:19,541 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 34 treesize of output 30 [2021-11-25 19:44:19,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:19,684 INFO L354 Elim1Store]: treesize reduction 71, result has 9.0 percent of original size [2021-11-25 19:44:19,684 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 1 case distinctions, treesize of input 192 treesize of output 194 [2021-11-25 19:44:19,724 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 34 treesize of output 30 [2021-11-25 19:44:19,752 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 30 treesize of output 26 [2021-11-25 19:44:19,803 INFO L354 Elim1Store]: treesize reduction 114, result has 21.9 percent of original size [2021-11-25 19:44:19,804 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 103 treesize of output 108 [2021-11-25 19:44:19,844 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 34 treesize of output 30 [2021-11-25 19:44:20,031 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 84 treesize of output 54 [2021-11-25 19:44:20,341 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 138 treesize of output 80 [2021-11-25 19:44:20,750 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 34 treesize of output 30 [2021-11-25 19:44:20,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:20,784 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 104 treesize of output 103 [2021-11-25 19:44:20,813 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 34 treesize of output 30 [2021-11-25 19:44:20,825 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2021-11-25 19:44:20,829 INFO L197 IcfgInterpreter]: Interpreting procedure outerBoundaryPatternCheck with input of size 76 for LOIs [2021-11-25 19:44:20,898 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:44:22,736 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1288#(and (<= 0 (+ |ULTIMATE.start_main_~index2~0#1| 32768)) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~row~0#1|) (<= 0 |#NULL.base|) (<= 0 (+ |ULTIMATE.start_main_~index1~0#1| 32768)) (<= |ULTIMATE.start_main_~index2~0#1| 32767) (<= |ULTIMATE.start_main_~index1~0#1| 32767) (<= 0 |ULTIMATE.start_main_~#array~0#1.offset|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 |ULTIMATE.start_main_~#array~0#1.base|) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (<= 0 ~ARR_SIZE~0) (<= |#NULL.base| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= ~ARR_SIZE~0 |ULTIMATE.start_main_~column~0#1|) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= |ULTIMATE.start_main_~sum~0#1| 0) 1 0)) (<= 0 |#NULL.offset|) (<= ~ARR_SIZE~0 32767) (<= |ULTIMATE.start_main_~#array~0#1.offset| 0) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= 1 |ULTIMATE.start_main_~row~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0))' at error location [2021-11-25 19:44:22,736 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-25 19:44:22,736 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-11-25 19:44:22,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-11-25 19:44:22,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737470550] [2021-11-25 19:44:22,737 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-11-25 19:44:22,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 19:44:22,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:44:22,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 19:44:22,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2021-11-25 19:44:22,739 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:44:22,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:44:22,866 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2021-11-25 19:44:22,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 19:44:22,866 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 34 [2021-11-25 19:44:22,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:44:22,868 INFO L225 Difference]: With dead ends: 66 [2021-11-25 19:44:22,868 INFO L226 Difference]: Without dead ends: 45 [2021-11-25 19:44:22,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=124, Invalid=806, Unknown=0, NotChecked=0, Total=930 [2021-11-25 19:44:22,870 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:44:22,870 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 42 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:44:22,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-11-25 19:44:22,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2021-11-25 19:44:22,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 30 states have internal predecessors, (37), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-11-25 19:44:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2021-11-25 19:44:22,879 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 34 [2021-11-25 19:44:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:44:22,879 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2021-11-25 19:44:22,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2021-11-25 19:44:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2021-11-25 19:44:22,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-11-25 19:44:22,881 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:44:22,881 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:44:22,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-25 19:44:23,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:23,107 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:44:23,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:44:23,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1831697292, now seen corresponding path program 3 times [2021-11-25 19:44:23,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:44:23,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427204961] [2021-11-25 19:44:23,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:44:23,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:44:23,136 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-25 19:44:23,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210929784] [2021-11-25 19:44:23,136 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-25 19:44:23,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:44:23,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:44:23,142 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:44:23,143 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ded077e0-230b-4815-93e6-c6eeb7d0f28e/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-25 19:44:24,336 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-25 19:44:24,336 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-25 19:44:24,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 96 conjunts are in the unsatisfiable core [2021-11-25 19:44:24,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:44:24,454 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 54 treesize of output 49 [2021-11-25 19:44:24,459 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2021-11-25 19:44:24,472 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 17 [2021-11-25 19:44:24,562 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 73 treesize of output 66 [2021-11-25 19:44:24,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,568 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-25 19:44:24,569 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 85 [2021-11-25 19:44:24,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,582 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 30 treesize of output 7 [2021-11-25 19:44:24,753 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 78 treesize of output 69 [2021-11-25 19:44:24,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,761 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,779 INFO L354 Elim1Store]: treesize reduction 82, result has 13.7 percent of original size [2021-11-25 19:44:24,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 90 [2021-11-25 19:44:24,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 12 [2021-11-25 19:44:24,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:24,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 17 [2021-11-25 19:44:24,999 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 133 treesize of output 116 [2021-11-25 19:44:25,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,021 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,040 INFO L354 Elim1Store]: treesize reduction 108, result has 10.7 percent of original size [2021-11-25 19:44:25,040 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 115 treesize of output 165 [2021-11-25 19:44:25,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,070 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 44 [2021-11-25 19:44:25,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,171 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,176 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:25,182 INFO L354 Elim1Store]: treesize reduction 34, result has 2.9 percent of original size [2021-11-25 19:44:25,182 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 118 treesize of output 61 [2021-11-25 19:44:26,819 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 107 treesize of output 94 [2021-11-25 19:44:26,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:26,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:26,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:26,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:26,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:26,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:26,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:27,000 INFO L354 Elim1Store]: treesize reduction 203, result has 42.2 percent of original size [2021-11-25 19:44:27,001 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 7 case distinctions, treesize of input 93 treesize of output 244 [2021-11-25 19:44:27,132 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:44:27,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:27,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:27,546 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:27,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:27,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:27,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:27,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:27,599 INFO L354 Elim1Store]: treesize reduction 18, result has 70.5 percent of original size [2021-11-25 19:44:27,599 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 340 treesize of output 301 [2021-11-25 19:44:43,390 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 369 treesize of output 334 [2021-11-25 19:44:43,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,407 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,413 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,419 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,465 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,490 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,495 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:43,500 INFO L244 Elim1Store]: Index analysis took 103 ms [2021-11-25 19:44:44,203 INFO L354 Elim1Store]: treesize reduction 512, result has 28.5 percent of original size [2021-11-25 19:44:44,204 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 4 stores, 5 select indices, 5 select index equivalence classes, 22 disjoint index pairs (out of 10 index pairs), introduced 9 new quantified variables, introduced 13 case distinctions, treesize of input 337 treesize of output 575 [2021-11-25 19:44:44,274 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:44:44,393 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:44:44,627 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:44:44,826 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:44:44,918 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:44:45,444 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-25 19:44:47,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:47,758 INFO L244 Elim1Store]: Index analysis took 117 ms [2021-11-25 19:44:47,792 INFO L354 Elim1Store]: treesize reduction 107, result has 0.9 percent of original size [2021-11-25 19:44:47,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 290 treesize of output 191 [2021-11-25 19:44:52,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:52,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:52,679 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:52,680 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:52,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:52,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:52,690 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:52,854 INFO L354 Elim1Store]: treesize reduction 4, result has 94.7 percent of original size [2021-11-25 19:44:52,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 3 case distinctions, treesize of input 632 treesize of output 617 [2021-11-25 19:44:53,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,538 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:44:53,727 INFO L354 Elim1Store]: treesize reduction 25, result has 76.9 percent of original size [2021-11-25 19:44:53,727 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 512 treesize of output 405 [2021-11-25 19:45:26,520 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,544 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,547 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-25 19:45:26,730 INFO L354 Elim1Store]: treesize reduction 4, result has 96.7 percent of original size [2021-11-25 19:45:26,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 303 treesize of output 207 [2021-11-25 19:45:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 19:45:28,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:46:41,420 WARN L227 SmtUtils]: Spent 52.39s on a formula simplification that was a NOOP. DAG size: 121 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:47:50,278 WARN L227 SmtUtils]: Spent 23.30s on a formula simplification that was a NOOP. DAG size: 166 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:48:23,174 WARN L227 SmtUtils]: Spent 19.65s on a formula simplification that was a NOOP. DAG size: 113 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:56:23,510 WARN L227 SmtUtils]: Spent 5.73s on a formula simplification that was a NOOP. DAG size: 6 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-11-25 19:57:06,636 WARN L227 SmtUtils]: Spent 5.77s on a formula simplification that was a NOOP. DAG size: 4 (called from [L1066] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)