./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array6_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-patterns/array6_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0 --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 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 19:27:26,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 19:27:26,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 19:27:26,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 19:27:26,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 19:27:26,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 19:27:26,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 19:27:26,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 19:27:26,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 19:27:26,185 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 19:27:26,186 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 19:27:26,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 19:27:26,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 19:27:26,189 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 19:27:26,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 19:27:26,192 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 19:27:26,193 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 19:27:26,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 19:27:26,197 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 19:27:26,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 19:27:26,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 19:27:26,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 19:27:26,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 19:27:26,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 19:27:26,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 19:27:26,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 19:27:26,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 19:27:26,211 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 19:27:26,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 19:27:26,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 19:27:26,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 19:27:26,215 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 19:27:26,216 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 19:27:26,217 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 19:27:26,218 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 19:27:26,219 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 19:27:26,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 19:27:26,220 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 19:27:26,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 19:27:26,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 19:27:26,223 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 19:27:26,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 19:27:26,267 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 19:27:26,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 19:27:26,268 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 19:27:26,268 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 19:27:26,269 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 19:27:26,269 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 19:27:26,269 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 19:27:26,270 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 19:27:26,270 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 19:27:26,270 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 19:27:26,271 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 19:27:26,271 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 19:27:26,271 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 19:27:26,272 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 19:27:26,272 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 19:27:26,272 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 19:27:26,273 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 19:27:26,273 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 19:27:26,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 19:27:26,274 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 19:27:26,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 19:27:26,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 19:27:26,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 19:27:26,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 19:27:26,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 19:27:26,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 19:27:26,276 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 19:27:26,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 19:27:26,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 19:27:26,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 19:27:26,278 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 19:27:26,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 19:27:26,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:27:26,279 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 19:27:26,279 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 19:27:26,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 19:27:26,280 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 19:27:26,280 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 19:27:26,280 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 19:27:26,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 19:27:26,281 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 19:27:26,281 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 81db346fb66b40514998cf838e858b3f0793fe5c74d5812efa60193ab54d6833 [2022-11-16 19:27:26,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 19:27:26,673 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 19:27:26,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 19:27:26,678 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 19:27:26,679 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 19:27:26,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/array-patterns/array6_pattern.c [2022-11-16 19:27:26,771 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/data/56fafec93/2b6e900120c646dea955da2487546ae3/FLAGdab0bf0a4 [2022-11-16 19:27:27,229 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 19:27:27,229 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/sv-benchmarks/c/array-patterns/array6_pattern.c [2022-11-16 19:27:27,238 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/data/56fafec93/2b6e900120c646dea955da2487546ae3/FLAGdab0bf0a4 [2022-11-16 19:27:27,628 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/data/56fafec93/2b6e900120c646dea955da2487546ae3 [2022-11-16 19:27:27,633 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 19:27:27,635 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 19:27:27,639 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 19:27:27,639 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 19:27:27,643 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 19:27:27,644 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:27:27" (1/1) ... [2022-11-16 19:27:27,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ff1988c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:27, skipping insertion in model container [2022-11-16 19:27:27,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:27:27" (1/1) ... [2022-11-16 19:27:27,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 19:27:27,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 19:27:27,951 WARN L229 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_5e199658-decd-479d-a671-ac497a1544a3/sv-benchmarks/c/array-patterns/array6_pattern.c[1356,1369] [2022-11-16 19:27:27,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:27:28,002 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 19:27:28,016 WARN L229 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_5e199658-decd-479d-a671-ac497a1544a3/sv-benchmarks/c/array-patterns/array6_pattern.c[1356,1369] [2022-11-16 19:27:28,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 19:27:28,042 INFO L208 MainTranslator]: Completed translation [2022-11-16 19:27:28,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28 WrapperNode [2022-11-16 19:27:28,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 19:27:28,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 19:27:28,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 19:27:28,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 19:27:28,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,063 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,089 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2022-11-16 19:27:28,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 19:27:28,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 19:27:28,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 19:27:28,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 19:27:28,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,113 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,117 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,119 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 19:27:28,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 19:27:28,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 19:27:28,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 19:27:28,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (1/1) ... [2022-11-16 19:27:28,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 19:27:28,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:28,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 19:27:28,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 19:27:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 19:27:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-16 19:27:28,237 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-16 19:27:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 19:27:28,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 19:27:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 19:27:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 19:27:28,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 19:27:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 19:27:28,238 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 19:27:28,343 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 19:27:28,345 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 19:27:28,560 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 19:27:28,609 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 19:27:28,609 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-16 19:27:28,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:27:28 BoogieIcfgContainer [2022-11-16 19:27:28,618 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 19:27:28,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 19:27:28,622 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 19:27:28,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 19:27:28,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:27:27" (1/3) ... [2022-11-16 19:27:28,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647d8229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:27:28, skipping insertion in model container [2022-11-16 19:27:28,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:27:28" (2/3) ... [2022-11-16 19:27:28,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@647d8229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:27:28, skipping insertion in model container [2022-11-16 19:27:28,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 07:27:28" (3/3) ... [2022-11-16 19:27:28,631 INFO L112 eAbstractionObserver]: Analyzing ICFG array6_pattern.c [2022-11-16 19:27:28,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 19:27:28,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 19:27:28,709 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 19:27:28,718 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b1de72f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 19:27:28,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 19:27:28,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:28,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 19:27:28,733 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:28,733 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:28,734 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:28,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:28,741 INFO L85 PathProgramCache]: Analyzing trace with hash 857550697, now seen corresponding path program 1 times [2022-11-16 19:27:28,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:28,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521944809] [2022-11-16 19:27:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:29,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:29,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:29,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521944809] [2022-11-16 19:27:29,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521944809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:29,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:29,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 19:27:29,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85908252] [2022-11-16 19:27:29,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:29,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 19:27:29,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:29,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 19:27:29,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:27:29,063 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) 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) [2022-11-16 19:27:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:29,105 INFO L93 Difference]: Finished difference Result 24 states and 30 transitions. [2022-11-16 19:27:29,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 19:27:29,113 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 [2022-11-16 19:27:29,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:29,121 INFO L225 Difference]: With dead ends: 24 [2022-11-16 19:27:29,121 INFO L226 Difference]: Without dead ends: 15 [2022-11-16 19:27:29,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 19:27:29,128 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:29,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:27:29,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-16 19:27:29,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-16 19:27:29,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:29,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-11-16 19:27:29,170 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 11 [2022-11-16 19:27:29,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:29,172 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-11-16 19:27:29,172 INFO L496 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) [2022-11-16 19:27:29,172 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-11-16 19:27:29,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-16 19:27:29,174 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:29,174 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:29,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 19:27:29,175 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:29,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:29,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1659101310, now seen corresponding path program 1 times [2022-11-16 19:27:29,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:29,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480813165] [2022-11-16 19:27:29,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:29,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:29,621 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:27:29,622 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:29,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480813165] [2022-11-16 19:27:29,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480813165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:29,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:29,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-16 19:27:29,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504925609] [2022-11-16 19:27:29,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:29,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 19:27:29,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:29,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 19:27:29,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-16 19:27:29,627 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:29,667 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2022-11-16 19:27:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-16 19:27:29,668 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-11-16 19:27:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:29,669 INFO L225 Difference]: With dead ends: 19 [2022-11-16 19:27:29,669 INFO L226 Difference]: Without dead ends: 16 [2022-11-16 19:27:29,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:27:29,671 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:29,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 19:27:29,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-11-16 19:27:29,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-11-16 19:27:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:29,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2022-11-16 19:27:29,678 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 16 [2022-11-16 19:27:29,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:29,679 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2022-11-16 19:27:29,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2022-11-16 19:27:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-16 19:27:29,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:29,681 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:29,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 19:27:29,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:29,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:29,682 INFO L85 PathProgramCache]: Analyzing trace with hash 107201699, now seen corresponding path program 1 times [2022-11-16 19:27:29,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:29,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906630905] [2022-11-16 19:27:29,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:29,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:27:29,826 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:29,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906630905] [2022-11-16 19:27:29,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906630905] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 19:27:29,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 19:27:29,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 19:27:29,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237758831] [2022-11-16 19:27:29,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 19:27:29,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 19:27:29,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:29,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 19:27:29,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:27:29,830 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:29,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:29,906 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2022-11-16 19:27:29,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 19:27:29,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-11-16 19:27:29,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:29,909 INFO L225 Difference]: With dead ends: 29 [2022-11-16 19:27:29,909 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 19:27:29,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-16 19:27:29,911 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 6 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:29,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 42 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:29,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 19:27:29,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 19:27:29,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 13 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:29,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-11-16 19:27:29,919 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 17 [2022-11-16 19:27:29,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:29,920 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-11-16 19:27:29,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:29,920 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-11-16 19:27:29,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 19:27:29,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:29,922 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:29,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 19:27:29,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:29,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:29,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1924715561, now seen corresponding path program 1 times [2022-11-16 19:27:29,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:29,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811515176] [2022-11-16 19:27:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:29,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:29,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:29,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1747796210] [2022-11-16 19:27:29,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:29,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:29,951 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:29,955 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:29,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 19:27:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:30,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:27:30,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:30,273 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-16 19:27:30,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:27:30,440 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:27:30,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:30,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811515176] [2022-11-16 19:27:30,441 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:30,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747796210] [2022-11-16 19:27:30,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747796210] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:27:30,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [737084986] [2022-11-16 19:27:30,466 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:27:30,467 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:27:30,471 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:27:30,478 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:27:30,479 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:27:30,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:30,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:30,825 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:27:30,826 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:27:30,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:30,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:30,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2022-11-16 19:27:30,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:30,960 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:30,963 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:30,970 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 56 [2022-11-16 19:27:31,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,189 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:31,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,198 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:31,269 INFO L321 Elim1Store]: treesize reduction 150, result has 15.3 percent of original size [2022-11-16 19:27:31,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 437 treesize of output 418 [2022-11-16 19:27:31,427 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:31,450 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:27:31,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:27:31,767 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,769 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,787 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:31,794 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:31,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:31,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:31,823 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:27:31,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:27:32,037 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-11-16 19:27:32,039 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:27:33,568 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '314#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:27:33,569 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:27:33,569 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:27:33,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2022-11-16 19:27:33,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682465535] [2022-11-16 19:27:33,570 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:27:33,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 19:27:33,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:33,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 19:27:33,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-16 19:27:33,572 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:27:33,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:33,863 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2022-11-16 19:27:33,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-16 19:27:33,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 18 [2022-11-16 19:27:33,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:33,866 INFO L225 Difference]: With dead ends: 49 [2022-11-16 19:27:33,867 INFO L226 Difference]: Without dead ends: 29 [2022-11-16 19:27:33,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2022-11-16 19:27:33,871 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 40 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:33,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 54 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:33,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-16 19:27:33,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 19. [2022-11-16 19:27:33,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:33,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-11-16 19:27:33,890 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 18 [2022-11-16 19:27:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:33,890 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-11-16 19:27:33,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 9 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:27:33,891 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-11-16 19:27:33,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-16 19:27:33,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:33,893 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:33,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 19:27:34,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:34,099 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:34,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:34,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1012202345, now seen corresponding path program 2 times [2022-11-16 19:27:34,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:34,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666186038] [2022-11-16 19:27:34,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:34,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:34,143 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:34,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [915568285] [2022-11-16 19:27:34,143 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:27:34,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:34,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:34,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:34,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 19:27:34,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-16 19:27:34,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:27:34,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-16 19:27:34,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 19:27:34,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:27:34,390 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-16 19:27:34,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:34,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666186038] [2022-11-16 19:27:34,391 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:34,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [915568285] [2022-11-16 19:27:34,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [915568285] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:27:34,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1507436212] [2022-11-16 19:27:34,395 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:27:34,395 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:27:34,395 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:27:34,396 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:27:34,396 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:27:34,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,533 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:27:34,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:27:34,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,660 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:27:34,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:27:34,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:34,711 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 56 [2022-11-16 19:27:34,828 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,836 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:34,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:34,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:34,894 INFO L321 Elim1Store]: treesize reduction 150, result has 15.3 percent of original size [2022-11-16 19:27:34,895 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 437 treesize of output 418 [2022-11-16 19:27:35,035 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:35,056 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:27:35,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:27:35,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:35,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:35,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:35,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:35,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:35,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:35,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:35,257 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:35,258 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:35,277 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:27:35,278 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:27:35,466 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-11-16 19:27:35,468 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:27:36,874 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '570#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:27:36,874 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:27:36,874 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:27:36,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-11-16 19:27:36,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511388819] [2022-11-16 19:27:36,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:27:36,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 19:27:36,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:36,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 19:27:36,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-11-16 19:27:36,876 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 10 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:27:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:36,970 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-11-16 19:27:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 19:27:36,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2022-11-16 19:27:36,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:36,973 INFO L225 Difference]: With dead ends: 28 [2022-11-16 19:27:36,973 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 19:27:36,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2022-11-16 19:27:36,974 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 25 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 43 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 [2022-11-16 19:27:36,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 43 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:36,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 19:27:36,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 19:27:36,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:27:36,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2022-11-16 19:27:36,983 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2022-11-16 19:27:36,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:36,984 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2022-11-16 19:27:36,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 2.5) internal successors, (20), 10 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-16 19:27:36,984 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2022-11-16 19:27:36,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-16 19:27:36,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:36,985 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:36,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-16 19:27:37,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:37,192 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:37,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:37,193 INFO L85 PathProgramCache]: Analyzing trace with hash 2055356873, now seen corresponding path program 3 times [2022-11-16 19:27:37,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:37,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415509325] [2022-11-16 19:27:37,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:37,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:37,209 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:37,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862586635] [2022-11-16 19:27:37,209 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:27:37,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:37,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:37,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:37,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 19:27:37,374 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:27:37,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:27:37,381 WARN L261 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 83 conjunts are in the unsatisfiable core [2022-11-16 19:27:37,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:37,417 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:27:37,471 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:37,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 47 [2022-11-16 19:27:37,484 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 19 [2022-11-16 19:27:37,490 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 39 [2022-11-16 19:27:37,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 77 [2022-11-16 19:27:37,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:37,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:37,685 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:37,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2022-11-16 19:27:38,246 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-16 19:27:38,246 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 330 treesize of output 213 [2022-11-16 19:27:38,258 INFO L350 Elim1Store]: Elim1 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 158 treesize of output 130 [2022-11-16 19:27:38,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-11-16 19:27:38,335 INFO L321 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-11-16 19:27:38,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 174 treesize of output 217 [2022-11-16 19:27:38,361 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:38,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:38,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:38,368 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:38,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:38,380 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 124 [2022-11-16 19:27:38,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:38,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:38,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:38,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:38,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:38,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:38,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:38,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-11-16 19:27:38,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 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 121 treesize of output 120 [2022-11-16 19:27:38,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:38,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:38,563 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:38,564 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-11-16 19:27:38,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 36 treesize of output 26 [2022-11-16 19:27:38,628 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 19:27:39,344 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:27:39,347 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 223 treesize of output 187 [2022-11-16 19:27:39,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 114 [2022-11-16 19:27:39,367 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,370 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:39,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:39,374 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,375 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:39,376 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 107 [2022-11-16 19:27:39,386 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:39,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,392 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:39,393 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,394 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:39,401 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 35 [2022-11-16 19:27:39,444 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:39,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:27:39,728 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_218 (Array Int Int)) (v_ArrVal_213 (Array Int Int))) (= (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse0 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_213) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4))))))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|))))) 0)) (not (< 2 c_~ARR_SIZE~0))) is different from false [2022-11-16 19:27:39,855 WARN L833 $PredicateComparison]: unable to prove that (or (not (< 2 c_~ARR_SIZE~0)) (forall ((v_ArrVal_218 (Array Int Int)) (|ULTIMATE.start_main_~index~0#1| Int) (v_ArrVal_213 (Array Int Int))) (or (<= |ULTIMATE.start_main_~index~0#1| 0) (= (let ((.cse3 (* 4 |ULTIMATE.start_main_~index~0#1|))) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_218) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_213) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ .cse3 (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (select .cse4 (+ .cse3 |c_ULTIMATE.start_main_~#array2~0#1.offset| 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ .cse3 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (+ (select .cse2 (+ .cse3 |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse2 (+ .cse3 |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4))))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)))))) 0) (<= c_~ARR_SIZE~0 (+ |ULTIMATE.start_main_~index~0#1| 1))))) is different from false [2022-11-16 19:27:39,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415509325] [2022-11-16 19:27:39,860 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862586635] [2022-11-16 19:27:39,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862586635] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:27:39,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1577675927] [2022-11-16 19:27:39,862 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:27:39,862 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:27:39,863 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:27:39,863 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:27:39,863 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:27:39,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:39,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,061 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:27:40,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:27:40,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,096 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,192 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:27:40,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:27:40,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:27:40,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,353 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:40,354 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:40,355 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:40,466 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:27:40,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:27:40,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:40,692 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:27:40,693 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:27:40,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,758 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:40,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:40,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:40,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:40,778 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:27:40,779 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:27:40,882 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:27:40,905 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:27:43,158 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '788#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-11-16 19:27:43,158 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:27:43,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:27:43,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2022-11-16 19:27:43,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228579351] [2022-11-16 19:27:43,159 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 19:27:43,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 19:27:43,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:43,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 19:27:43,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1095, Unknown=2, NotChecked=138, Total=1406 [2022-11-16 19:27:43,162 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 18 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:43,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:43,391 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2022-11-16 19:27:43,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-16 19:27:43,393 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-11-16 19:27:43,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:43,394 INFO L225 Difference]: With dead ends: 42 [2022-11-16 19:27:43,395 INFO L226 Difference]: Without dead ends: 39 [2022-11-16 19:27:43,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=178, Invalid=1160, Unknown=2, NotChecked=142, Total=1482 [2022-11-16 19:27:43,396 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 11 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 74 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:43,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 99 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 80 Invalid, 0 Unknown, 74 Unchecked, 0.2s Time] [2022-11-16 19:27:43,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-16 19:27:43,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34. [2022-11-16 19:27:43,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 27 states have internal predecessors, (31), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:27:43,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2022-11-16 19:27:43,417 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 22 [2022-11-16 19:27:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:43,417 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2022-11-16 19:27:43,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 1.125) internal successors, (18), 15 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:27:43,418 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2022-11-16 19:27:43,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 19:27:43,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:43,419 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:43,427 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-16 19:27:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-16 19:27:43,620 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:43,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:43,620 INFO L85 PathProgramCache]: Analyzing trace with hash -708711620, now seen corresponding path program 4 times [2022-11-16 19:27:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:43,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601374531] [2022-11-16 19:27:43,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:43,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:43,645 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:43,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1210784663] [2022-11-16 19:27:43,645 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:27:43,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:43,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:43,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:43,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-16 19:27:43,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:27:43,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:27:43,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:43,879 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:43,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:27:43,980 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:27:43,981 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:43,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601374531] [2022-11-16 19:27:43,981 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:43,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210784663] [2022-11-16 19:27:43,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210784663] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:27:43,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1226649441] [2022-11-16 19:27:43,984 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:27:43,984 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:27:43,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:27:43,984 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:27:43,985 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:27:44,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,023 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,135 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:27:44,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:27:44,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,281 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:27:44,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:27:44,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:27:44,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,428 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:44,429 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:44,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:44,532 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:27:44,533 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:27:44,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:44,740 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:27:44,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:27:44,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:44,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:44,805 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:44,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:44,825 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:27:44,827 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:27:44,943 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:27:44,972 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:27:46,436 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1072#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:27:46,436 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:27:46,436 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:27:46,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-16 19:27:46,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451018028] [2022-11-16 19:27:46,437 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:27:46,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 19:27:46,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:46,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 19:27:46,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2022-11-16 19:27:46,443 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:27:46,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:46,649 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2022-11-16 19:27:46,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 19:27:46,650 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-11-16 19:27:46,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:46,655 INFO L225 Difference]: With dead ends: 59 [2022-11-16 19:27:46,655 INFO L226 Difference]: Without dead ends: 50 [2022-11-16 19:27:46,656 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=185, Invalid=871, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 19:27:46,658 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:46,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 57 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:46,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-16 19:27:46,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 43. [2022-11-16 19:27:46,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 19:27:46,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2022-11-16 19:27:46,698 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 23 [2022-11-16 19:27:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:46,698 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2022-11-16 19:27:46,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:27:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2022-11-16 19:27:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-16 19:27:46,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:46,700 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:46,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-16 19:27:46,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:46,906 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:46,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:46,907 INFO L85 PathProgramCache]: Analyzing trace with hash -123210237, now seen corresponding path program 5 times [2022-11-16 19:27:46,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:46,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558876120] [2022-11-16 19:27:46,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:46,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:46,940 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:46,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1941864776] [2022-11-16 19:27:46,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:27:46,942 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:46,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:46,946 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:46,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-16 19:27:47,095 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-16 19:27:47,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:27:47,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 19:27:47,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:27:47,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:27:47,319 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:27:47,319 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:27:47,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558876120] [2022-11-16 19:27:47,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:27:47,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941864776] [2022-11-16 19:27:47,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941864776] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:27:47,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [683118707] [2022-11-16 19:27:47,322 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:27:47,323 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:27:47,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:27:47,323 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:27:47,323 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:27:47,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:47,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:47,437 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:27:47,438 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:27:47,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:47,464 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:47,559 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:27:47,560 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:27:47,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:47,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:47,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:27:47,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:47,693 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:47,697 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:47,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:47,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:47,796 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:27:47,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:27:48,184 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:48,204 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:27:48,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:27:48,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:48,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:48,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:48,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:48,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:48,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:48,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:48,286 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:48,287 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:48,303 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:27:48,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:27:48,390 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:27:48,413 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:27:49,697 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1402#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:27:49,697 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:27:49,698 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:27:49,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15 [2022-11-16 19:27:49,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713209699] [2022-11-16 19:27:49,705 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:27:49,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-16 19:27:49,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:27:49,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-16 19:27:49,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=632, Unknown=0, NotChecked=0, Total=756 [2022-11-16 19:27:49,706 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:27:49,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:27:49,921 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2022-11-16 19:27:49,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 19:27:49,921 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-11-16 19:27:49,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:27:49,922 INFO L225 Difference]: With dead ends: 52 [2022-11-16 19:27:49,922 INFO L226 Difference]: Without dead ends: 49 [2022-11-16 19:27:49,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=174, Invalid=882, Unknown=0, NotChecked=0, Total=1056 [2022-11-16 19:27:49,924 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 45 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:27:49,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 67 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:27:49,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-16 19:27:49,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 42. [2022-11-16 19:27:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 33 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-16 19:27:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2022-11-16 19:27:49,939 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2022-11-16 19:27:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:27:49,940 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2022-11-16 19:27:49,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.6) internal successors, (24), 15 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:27:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2022-11-16 19:27:49,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-16 19:27:49,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:27:49,941 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:27:49,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-16 19:27:50,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:50,156 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:27:50,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:27:50,156 INFO L85 PathProgramCache]: Analyzing trace with hash 475184706, now seen corresponding path program 6 times [2022-11-16 19:27:50,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:27:50,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206869681] [2022-11-16 19:27:50,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:27:50,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:27:50,170 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:27:50,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74647808] [2022-11-16 19:27:50,171 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:27:50,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:27:50,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:27:50,172 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:27:50,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-16 19:27:50,511 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:27:50,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:27:50,514 WARN L261 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-16 19:27:50,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:27:50,549 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:27:50,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,598 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 19:27:50,602 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 19:27:50,607 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-16 19:27:50,614 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-16 19:27:50,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,671 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 56 [2022-11-16 19:27:50,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,753 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:50,754 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,755 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:50,766 INFO L321 Elim1Store]: treesize reduction 37, result has 26.0 percent of original size [2022-11-16 19:27:50,767 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 71 [2022-11-16 19:27:50,865 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,868 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,871 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:50,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,874 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:50,875 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:50,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:50,890 INFO L321 Elim1Store]: treesize reduction 45, result has 22.4 percent of original size [2022-11-16 19:27:50,891 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 164 treesize of output 103 [2022-11-16 19:27:51,732 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-16 19:27:51,733 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 419 treesize of output 280 [2022-11-16 19:27:51,750 INFO L350 Elim1Store]: Elim1 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 158 treesize of output 130 [2022-11-16 19:27:51,765 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-11-16 19:27:51,831 INFO L321 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-11-16 19:27:51,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 275 treesize of output 298 [2022-11-16 19:27:51,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:51,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:51,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:51,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:51,893 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:51,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:51,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:51,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:51,903 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,003 INFO L321 Elim1Store]: treesize reduction 154, result has 16.8 percent of original size [2022-11-16 19:27:52,004 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 8 case distinctions, treesize of input 171 treesize of output 227 [2022-11-16 19:27:52,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,046 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,070 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,127 INFO L321 Elim1Store]: treesize reduction 81, result has 24.3 percent of original size [2022-11-16 19:27:52,127 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 55 treesize of output 91 [2022-11-16 19:27:52,519 INFO L321 Elim1Store]: treesize reduction 25, result has 16.7 percent of original size [2022-11-16 19:27:52,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 728 treesize of output 681 [2022-11-16 19:27:52,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,561 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,563 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,568 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,569 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,572 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,581 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,585 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,586 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,592 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 12 select indices, 12 select index equivalence classes, 6 disjoint index pairs (out of 66 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 230 treesize of output 181 [2022-11-16 19:27:52,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-16 19:27:52,685 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,686 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,689 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,691 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,692 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,693 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,694 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,695 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,703 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,707 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,714 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 11 select indices, 11 select index equivalence classes, 6 disjoint index pairs (out of 55 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 221 treesize of output 176 [2022-11-16 19:27:52,767 WARN L207 Elim1Store]: Array PQE input equivalent to false [2022-11-16 19:27:52,788 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,790 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,794 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,795 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,798 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,802 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,803 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,804 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:27:52,806 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,807 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:27:52,812 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 6 disjoint index pairs (out of 45 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 189 [2022-11-16 19:27:52,848 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 90 [2022-11-16 19:27:56,707 INFO L321 Elim1Store]: treesize reduction 1384, result has 23.2 percent of original size [2022-11-16 19:27:56,707 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 20 select indices, 20 select index equivalence classes, 6 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 190 case distinctions, treesize of input 270 treesize of output 510 [2022-11-16 19:28:07,919 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:07,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:13,087 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:13,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206869681] [2022-11-16 19:28:13,088 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:13,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74647808] [2022-11-16 19:28:13,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74647808] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:28:13,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1766157790] [2022-11-16 19:28:13,091 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:28:13,091 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:13,091 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:13,091 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:13,092 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:13,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,220 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:28:13,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:28:13,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2022-11-16 19:28:13,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,271 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 56 [2022-11-16 19:28:13,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,347 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,351 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,352 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,407 INFO L321 Elim1Store]: treesize reduction 150, result has 15.3 percent of original size [2022-11-16 19:28:13,407 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 437 treesize of output 418 [2022-11-16 19:28:13,484 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,506 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:28:13,507 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:28:13,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,637 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:13,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,639 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:13,656 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:28:13,656 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:28:13,780 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-11-16 19:28:13,782 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:15,805 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1702#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:15,805 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:15,805 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:28:15,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2022-11-16 19:28:15,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972369056] [2022-11-16 19:28:15,806 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:15,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-16 19:28:15,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:15,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-16 19:28:15,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=1415, Unknown=7, NotChecked=0, Total=1640 [2022-11-16 19:28:15,808 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:28:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:16,346 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2022-11-16 19:28:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 19:28:16,346 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2022-11-16 19:28:16,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:16,349 INFO L225 Difference]: With dead ends: 60 [2022-11-16 19:28:16,349 INFO L226 Difference]: Without dead ends: 57 [2022-11-16 19:28:16,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 547 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=227, Invalid=1488, Unknown=7, NotChecked=0, Total=1722 [2022-11-16 19:28:16,354 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:16,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 132 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 130 Invalid, 0 Unknown, 78 Unchecked, 0.4s Time] [2022-11-16 19:28:16,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-16 19:28:16,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2022-11-16 19:28:16,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 40 states have (on average 1.175) internal successors, (47), 40 states have internal predecessors, (47), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-16 19:28:16,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2022-11-16 19:28:16,403 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 24 [2022-11-16 19:28:16,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:16,404 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2022-11-16 19:28:16,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:28:16,405 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2022-11-16 19:28:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 19:28:16,412 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:16,412 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:16,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:16,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:16,621 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:16,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:16,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1845558755, now seen corresponding path program 7 times [2022-11-16 19:28:16,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:16,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377961395] [2022-11-16 19:28:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:16,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:16,636 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:16,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [676939883] [2022-11-16 19:28:16,637 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:28:16,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:16,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:16,638 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:16,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-16 19:28:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:28:16,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 19:28:16,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:16,864 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 17 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:16,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:16,969 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:28:16,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:16,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377961395] [2022-11-16 19:28:16,969 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:16,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676939883] [2022-11-16 19:28:16,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676939883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:16,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [187003275] [2022-11-16 19:28:16,972 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:28:16,972 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:16,972 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:16,973 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:16,973 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:17,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,085 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:28:17,086 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:28:17,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 12 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 65 [2022-11-16 19:28:17,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:28:17,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,221 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:17,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:17,223 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:17,316 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:28:17,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:28:17,544 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:17,568 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:28:17,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:28:17,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:17,624 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:17,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:17,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:17,644 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:28:17,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:28:17,732 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:28:17,752 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:19,346 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2057#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:19,347 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:19,347 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:19,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-16 19:28:19,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418082178] [2022-11-16 19:28:19,347 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:19,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 19:28:19,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:19,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 19:28:19,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=765, Unknown=0, NotChecked=0, Total=930 [2022-11-16 19:28:19,349 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:28:19,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:19,737 INFO L93 Difference]: Finished difference Result 81 states and 87 transitions. [2022-11-16 19:28:19,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 19:28:19,737 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-16 19:28:19,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:19,738 INFO L225 Difference]: With dead ends: 81 [2022-11-16 19:28:19,738 INFO L226 Difference]: Without dead ends: 71 [2022-11-16 19:28:19,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=302, Invalid=1420, Unknown=0, NotChecked=0, Total=1722 [2022-11-16 19:28:19,739 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:19,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 86 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:28:19,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-16 19:28:19,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2022-11-16 19:28:19,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 44 states have (on average 1.1590909090909092) internal successors, (51), 44 states have internal predecessors, (51), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 19:28:19,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 63 transitions. [2022-11-16 19:28:19,767 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 63 transitions. Word has length 25 [2022-11-16 19:28:19,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:19,767 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 63 transitions. [2022-11-16 19:28:19,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:28:19,768 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 63 transitions. [2022-11-16 19:28:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-16 19:28:19,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:19,769 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:19,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:19,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-16 19:28:19,971 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:19,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1478734852, now seen corresponding path program 8 times [2022-11-16 19:28:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:19,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391922054] [2022-11-16 19:28:19,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:19,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:19,984 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:19,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [685506018] [2022-11-16 19:28:19,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:28:19,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:19,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:19,986 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:20,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-16 19:28:20,303 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 19:28:20,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:20,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 19:28:20,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:20,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:20,545 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:28:20,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391922054] [2022-11-16 19:28:20,546 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685506018] [2022-11-16 19:28:20,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [685506018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:20,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [494574872] [2022-11-16 19:28:20,548 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:28:20,548 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:20,548 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:20,549 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:20,549 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:20,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:20,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:20,677 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:28:20,677 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:28:20,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:20,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:20,788 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:28:20,788 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:28:20,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:20,820 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:20,822 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:28:20,887 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:20,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:20,900 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:20,901 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:20,902 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:21,028 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:28:21,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:28:21,292 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:21,317 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:28:21,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:28:21,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:21,370 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:21,377 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:21,378 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:21,379 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:21,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:21,381 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:21,382 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:21,383 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:21,400 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:28:21,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:28:21,480 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:28:21,498 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:23,048 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2469#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:23,048 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:23,048 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:23,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 18 [2022-11-16 19:28:23,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245231468] [2022-11-16 19:28:23,049 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:23,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-16 19:28:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:23,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-16 19:28:23,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=782, Unknown=0, NotChecked=0, Total=930 [2022-11-16 19:28:23,050 INFO L87 Difference]: Start difference. First operand 57 states and 63 transitions. Second operand has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:28:23,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:23,311 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2022-11-16 19:28:23,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 19:28:23,311 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-11-16 19:28:23,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:23,312 INFO L225 Difference]: With dead ends: 71 [2022-11-16 19:28:23,312 INFO L226 Difference]: Without dead ends: 68 [2022-11-16 19:28:23,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 482 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=217, Invalid=1115, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 19:28:23,313 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 58 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:23,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 116 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 19:28:23,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-11-16 19:28:23,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2022-11-16 19:28:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 45 states have (on average 1.1555555555555554) internal successors, (52), 45 states have internal predecessors, (52), 6 states have call successors, (6), 6 states have call predecessors, (6), 6 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-16 19:28:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 64 transitions. [2022-11-16 19:28:23,343 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 64 transitions. Word has length 25 [2022-11-16 19:28:23,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:23,343 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 64 transitions. [2022-11-16 19:28:23,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:28:23,344 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 64 transitions. [2022-11-16 19:28:23,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-16 19:28:23,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:23,345 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:23,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-16 19:28:23,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:23,551 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:23,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1403594601, now seen corresponding path program 9 times [2022-11-16 19:28:23,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:23,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349401238] [2022-11-16 19:28:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:23,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:23,564 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:23,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1370532518] [2022-11-16 19:28:23,564 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:28:23,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:23,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:23,565 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:23,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-16 19:28:23,901 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:28:23,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:23,905 WARN L261 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-16 19:28:23,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:23,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:23,976 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:23,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 47 [2022-11-16 19:28:23,985 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 19 [2022-11-16 19:28:23,990 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 39 [2022-11-16 19:28:24,051 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2022-11-16 19:28:24,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,136 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,139 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,155 INFO L321 Elim1Store]: treesize reduction 37, result has 26.0 percent of original size [2022-11-16 19:28:24,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 78 treesize of output 71 [2022-11-16 19:28:24,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,247 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,248 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,249 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,252 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,254 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,256 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,269 INFO L321 Elim1Store]: treesize reduction 50, result has 27.5 percent of original size [2022-11-16 19:28:24,269 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 123 treesize of output 112 [2022-11-16 19:28:24,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,397 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,400 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,404 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,405 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,406 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,410 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:24,412 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:24,428 INFO L321 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2022-11-16 19:28:24,429 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 10 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 206 treesize of output 133 [2022-11-16 19:28:25,192 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-16 19:28:25,192 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 381 treesize of output 254 [2022-11-16 19:28:25,204 INFO L350 Elim1Store]: Elim1 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 158 treesize of output 130 [2022-11-16 19:28:25,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-11-16 19:28:25,314 INFO L321 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-11-16 19:28:25,315 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 207 treesize of output 244 [2022-11-16 19:28:25,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,474 INFO L321 Elim1Store]: treesize reduction 231, result has 16.6 percent of original size [2022-11-16 19:28:25,475 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 7 select indices, 7 select index equivalence classes, 19 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 12 case distinctions, treesize of input 117 treesize of output 216 [2022-11-16 19:28:25,498 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,503 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,516 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,521 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,523 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,593 INFO L321 Elim1Store]: treesize reduction 114, result has 28.7 percent of original size [2022-11-16 19:28:25,593 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 19 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 9 case distinctions, treesize of input 62 treesize of output 114 [2022-11-16 19:28:25,818 INFO L350 Elim1Store]: Elim1 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 48 treesize of output 34 [2022-11-16 19:28:25,828 INFO L350 Elim1Store]: Elim1 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 89 [2022-11-16 19:28:25,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:25,886 INFO L321 Elim1Store]: treesize reduction 34, result has 43.3 percent of original size [2022-11-16 19:28:25,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 94 [2022-11-16 19:28:25,921 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-16 19:28:28,209 INFO L321 Elim1Store]: treesize reduction 37, result has 9.8 percent of original size [2022-11-16 19:28:28,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 10 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 279 treesize of output 111 [2022-11-16 19:28:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:28,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:28,774 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_739 (Array Int Int)) (v_ArrVal_738 (Array Int Int))) (= (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_738) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_739) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse1 (+ 16 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0)) (not (< 4 c_~ARR_SIZE~0))) is different from false [2022-11-16 19:28:31,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349401238] [2022-11-16 19:28:31,060 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370532518] [2022-11-16 19:28:31,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370532518] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:28:31,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2109763170] [2022-11-16 19:28:31,062 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:28:31,062 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:31,062 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:31,063 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:31,063 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:31,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,193 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:28:31,193 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:28:31,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,221 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,298 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:28:31,298 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:28:31,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:28:31,403 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,404 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:31,408 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:31,409 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:31,493 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:28:31,493 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:28:31,649 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:31,675 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:28:31,675 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:28:31,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,729 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:31,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:31,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:31,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:31,750 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:28:31,751 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:28:31,825 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:28:31,845 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:33,770 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '2837#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:33,770 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:33,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:28:33,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-16 19:28:33,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168367099] [2022-11-16 19:28:33,771 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:33,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 19:28:33,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:33,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 19:28:33,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=236, Invalid=1570, Unknown=4, NotChecked=82, Total=1892 [2022-11-16 19:28:33,773 INFO L87 Difference]: Start difference. First operand 58 states and 64 transitions. Second operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:28:35,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:35,204 INFO L93 Difference]: Finished difference Result 79 states and 88 transitions. [2022-11-16 19:28:35,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-16 19:28:35,205 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 26 [2022-11-16 19:28:35,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:35,206 INFO L225 Difference]: With dead ends: 79 [2022-11-16 19:28:35,206 INFO L226 Difference]: Without dead ends: 76 [2022-11-16 19:28:35,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=283, Invalid=1879, Unknown=4, NotChecked=90, Total=2256 [2022-11-16 19:28:35,207 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 70 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:35,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 145 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 357 Invalid, 0 Unknown, 61 Unchecked, 1.0s Time] [2022-11-16 19:28:35,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2022-11-16 19:28:35,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 67. [2022-11-16 19:28:35,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.1730769230769231) internal successors, (61), 52 states have internal predecessors, (61), 7 states have call successors, (7), 7 states have call predecessors, (7), 7 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-16 19:28:35,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2022-11-16 19:28:35,237 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 26 [2022-11-16 19:28:35,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:35,238 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2022-11-16 19:28:35,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 1.1) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:28:35,238 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2022-11-16 19:28:35,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 19:28:35,239 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:35,239 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:35,247 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:35,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-16 19:28:35,440 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:35,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:35,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1777613253, now seen corresponding path program 1 times [2022-11-16 19:28:35,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:35,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314549267] [2022-11-16 19:28:35,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:35,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:35,452 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:35,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [8140889] [2022-11-16 19:28:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:35,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:35,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:35,454 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:35,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-16 19:28:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:28:35,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 95 conjunts are in the unsatisfiable core [2022-11-16 19:28:35,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:35,662 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:35,698 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:35,701 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 47 [2022-11-16 19:28:35,712 INFO L350 Elim1Store]: Elim1 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 21 treesize of output 19 [2022-11-16 19:28:35,716 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 39 [2022-11-16 19:28:35,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:35,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:35,776 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2022-11-16 19:28:35,839 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:35,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:35,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:35,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 53 [2022-11-16 19:28:36,232 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-16 19:28:36,232 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 146 treesize of output 103 [2022-11-16 19:28:36,242 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2022-11-16 19:28:36,270 INFO L321 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-11-16 19:28:36,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 84 treesize of output 93 [2022-11-16 19:28:36,281 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,290 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 44 [2022-11-16 19:28:36,299 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:36,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,305 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:36,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:36,307 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 47 [2022-11-16 19:28:36,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 17 [2022-11-16 19:28:36,340 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-16 19:28:36,843 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-16 19:28:36,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 351 treesize of output 232 [2022-11-16 19:28:36,854 INFO L350 Elim1Store]: Elim1 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 158 treesize of output 130 [2022-11-16 19:28:36,869 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-11-16 19:28:36,925 INFO L321 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-11-16 19:28:36,926 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 174 treesize of output 217 [2022-11-16 19:28:36,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,948 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:36,950 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,952 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,953 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:36,954 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:36,955 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 49 [2022-11-16 19:28:36,970 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:36,972 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,973 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,975 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,976 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:36,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:36,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 124 [2022-11-16 19:28:37,045 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 121 [2022-11-16 19:28:37,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 64 [2022-11-16 19:28:37,076 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-16 19:28:37,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:37,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:37,577 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:37,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:37,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:37,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:37,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:37,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:37,583 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:37,584 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:37,630 INFO L321 Elim1Store]: treesize reduction 92, result has 20.0 percent of original size [2022-11-16 19:28:37,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 12 select indices, 12 select index equivalence classes, 3 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 66 case distinctions, treesize of input 130 treesize of output 56 [2022-11-16 19:28:37,682 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:37,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:37,927 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_849 (Array Int Int)) (v_ArrVal_851 (Array Int Int))) (= (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse1 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_849) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_851) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4))))))) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse1) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse0 |c_ULTIMATE.start_main_~#array1~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) (select .cse1 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0)) is different from false [2022-11-16 19:28:38,135 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:38,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314549267] [2022-11-16 19:28:38,136 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:38,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8140889] [2022-11-16 19:28:38,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8140889] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:28:38,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [444854716] [2022-11-16 19:28:38,138 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:28:38,138 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:38,138 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:38,138 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:38,138 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:38,168 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,169 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,239 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:28:38,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:28:38,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,334 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:28:38,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:28:38,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:28:38,444 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,446 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,450 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,451 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,548 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:28:38,548 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:28:38,705 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,728 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:28:38,728 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:28:38,773 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,774 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,782 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,784 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,801 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:28:38,801 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:28:38,869 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:38,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,881 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:38,897 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:28:38,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:28:38,981 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:28:39,000 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:41,070 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3231#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (<= 0 |ULTIMATE.start_main_~temp~0#1|) (<= |ULTIMATE.start_main_~temp~0#1| 0) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:41,070 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:41,071 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:28:41,071 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2022-11-16 19:28:41,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887979593] [2022-11-16 19:28:41,071 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:41,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-16 19:28:41,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:41,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-16 19:28:41,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1479, Unknown=3, NotChecked=78, Total=1722 [2022-11-16 19:28:41,073 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 22 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:28:41,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:41,446 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2022-11-16 19:28:41,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-16 19:28:41,446 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 28 [2022-11-16 19:28:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:41,447 INFO L225 Difference]: With dead ends: 98 [2022-11-16 19:28:41,447 INFO L226 Difference]: Without dead ends: 90 [2022-11-16 19:28:41,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=197, Invalid=1784, Unknown=3, NotChecked=86, Total=2070 [2022-11-16 19:28:41,449 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 59 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:41,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 123 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 102 Invalid, 0 Unknown, 93 Unchecked, 0.2s Time] [2022-11-16 19:28:41,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-11-16 19:28:41,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 73. [2022-11-16 19:28:41,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 56 states have internal predecessors, (65), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-16 19:28:41,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 81 transitions. [2022-11-16 19:28:41,488 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 81 transitions. Word has length 28 [2022-11-16 19:28:41,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:41,489 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 81 transitions. [2022-11-16 19:28:41,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 17 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-16 19:28:41,489 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 81 transitions. [2022-11-16 19:28:41,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 19:28:41,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:41,490 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:41,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-16 19:28:41,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:41,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash 561494428, now seen corresponding path program 10 times [2022-11-16 19:28:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:41,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255884666] [2022-11-16 19:28:41,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:41,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:41,704 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:41,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1942590919] [2022-11-16 19:28:41,705 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-16 19:28:41,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:41,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:41,707 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:41,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-16 19:28:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 19:28:41,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 19:28:41,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:41,979 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 23 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:41,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 21 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:28:42,106 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:42,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255884666] [2022-11-16 19:28:42,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:42,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942590919] [2022-11-16 19:28:42,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942590919] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:42,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1959691384] [2022-11-16 19:28:42,109 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:28:42,109 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:42,109 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:42,109 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:42,110 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:42,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,235 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:28:42,236 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:28:42,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,335 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:28:42,335 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:28:42,371 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,373 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:42,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 56 [2022-11-16 19:28:42,448 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:42,458 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:42,506 INFO L321 Elim1Store]: treesize reduction 150, result has 15.3 percent of original size [2022-11-16 19:28:42,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 437 treesize of output 418 [2022-11-16 19:28:42,566 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:42,589 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:28:42,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:28:42,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,718 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:42,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:42,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:42,723 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:42,741 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:28:42,742 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:28:42,840 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 14 for LOIs [2022-11-16 19:28:42,841 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:44,201 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '3699#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:44,201 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:44,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:44,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2022-11-16 19:28:44,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200879832] [2022-11-16 19:28:44,202 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:44,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 19:28:44,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 19:28:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=211, Invalid=911, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 19:28:44,204 INFO L87 Difference]: Start difference. First operand 73 states and 81 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:28:44,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:44,763 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2022-11-16 19:28:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 19:28:44,764 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-11-16 19:28:44,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:44,765 INFO L225 Difference]: With dead ends: 112 [2022-11-16 19:28:44,765 INFO L226 Difference]: Without dead ends: 101 [2022-11-16 19:28:44,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 808 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=475, Invalid=2177, Unknown=0, NotChecked=0, Total=2652 [2022-11-16 19:28:44,766 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 120 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:44,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 102 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:28:44,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-16 19:28:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 79. [2022-11-16 19:28:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 60 states have (on average 1.15) internal successors, (69), 60 states have internal predecessors, (69), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 19:28:44,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2022-11-16 19:28:44,803 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 27 [2022-11-16 19:28:44,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:44,803 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2022-11-16 19:28:44,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:28:44,804 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2022-11-16 19:28:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-16 19:28:44,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:44,804 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:44,809 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:45,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:45,005 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:45,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:45,006 INFO L85 PathProgramCache]: Analyzing trace with hash 587607715, now seen corresponding path program 11 times [2022-11-16 19:28:45,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:45,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039528383] [2022-11-16 19:28:45,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:45,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:45,018 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:45,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985821057] [2022-11-16 19:28:45,019 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:28:45,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:45,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:45,020 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:45,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-16 19:28:45,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 19:28:45,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:45,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-16 19:28:45,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:45,479 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 17 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:45,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:28:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 15 proven. 21 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-16 19:28:45,608 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:28:45,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039528383] [2022-11-16 19:28:45,608 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:28:45,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985821057] [2022-11-16 19:28:45,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985821057] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 19:28:45,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1436361852] [2022-11-16 19:28:45,610 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:28:45,610 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:28:45,611 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:28:45,611 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:28:45,611 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:28:45,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:45,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:45,727 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:28:45,727 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:28:45,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:45,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:45,839 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:28:45,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:28:45,874 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:45,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:45,877 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:28:45,951 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:45,953 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:45,957 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:45,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:45,958 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:46,056 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:28:46,056 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:28:46,165 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:46,189 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:28:46,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:28:46,235 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:46,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:46,242 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:46,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:46,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:46,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:46,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:46,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:46,247 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:46,264 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:28:46,265 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:28:46,334 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:28:46,351 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:28:47,664 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4223#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:28:47,664 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:28:47,664 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-16 19:28:47,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 21 [2022-11-16 19:28:47,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134710649] [2022-11-16 19:28:47,665 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-16 19:28:47,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-16 19:28:47,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:28:47,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-16 19:28:47,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=946, Unknown=0, NotChecked=0, Total=1122 [2022-11-16 19:28:47,667 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:28:48,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:28:48,025 INFO L93 Difference]: Finished difference Result 101 states and 106 transitions. [2022-11-16 19:28:48,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 19:28:48,026 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-11-16 19:28:48,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:28:48,027 INFO L225 Difference]: With dead ends: 101 [2022-11-16 19:28:48,027 INFO L226 Difference]: Without dead ends: 98 [2022-11-16 19:28:48,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 40 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 618 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=267, Invalid=1373, Unknown=0, NotChecked=0, Total=1640 [2022-11-16 19:28:48,029 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 52 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-16 19:28:48,029 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 135 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-16 19:28:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-11-16 19:28:48,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 80. [2022-11-16 19:28:48,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 61 states have internal predecessors, (70), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2022-11-16 19:28:48,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2022-11-16 19:28:48,071 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 27 [2022-11-16 19:28:48,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:28:48,072 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2022-11-16 19:28:48,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 1.4285714285714286) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-16 19:28:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2022-11-16 19:28:48,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-16 19:28:48,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:28:48,073 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:28:48,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-16 19:28:48,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-16 19:28:48,287 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:28:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:28:48,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1035704738, now seen corresponding path program 12 times [2022-11-16 19:28:48,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:28:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735590350] [2022-11-16 19:28:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:28:48,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:28:48,301 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:28:48,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849439349] [2022-11-16 19:28:48,301 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-16 19:28:48,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:28:48,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:28:48,303 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:28:48,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-16 19:28:48,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-16 19:28:48,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:28:48,800 WARN L261 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 136 conjunts are in the unsatisfiable core [2022-11-16 19:28:48,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:28:48,833 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:28:48,863 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:48,866 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 19:28:48,870 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 20 [2022-11-16 19:28:48,874 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-16 19:28:48,881 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-16 19:28:48,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:48,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:48,924 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:48,924 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 41 [2022-11-16 19:28:49,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,012 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,013 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,014 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,015 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,016 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,038 INFO L321 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2022-11-16 19:28:49,038 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 99 treesize of output 82 [2022-11-16 19:28:49,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,129 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,132 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,147 INFO L321 Elim1Store]: treesize reduction 50, result has 27.5 percent of original size [2022-11-16 19:28:49,147 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 7 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 138 treesize of output 127 [2022-11-16 19:28:49,294 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,295 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,296 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,299 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,306 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,307 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,310 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,310 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,311 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,312 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,326 INFO L321 Elim1Store]: treesize reduction 53, result has 19.7 percent of original size [2022-11-16 19:28:49,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 11 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 29 case distinctions, treesize of input 126 treesize of output 131 [2022-11-16 19:28:49,469 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,470 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,476 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,478 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,480 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,482 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,485 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,486 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,487 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,488 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,493 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:49,494 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:28:49,514 INFO L321 Elim1Store]: treesize reduction 61, result has 17.6 percent of original size [2022-11-16 19:28:49,515 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 10 select indices, 10 select index equivalence classes, 15 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 46 case distinctions, treesize of input 248 treesize of output 163 [2022-11-16 19:28:50,831 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-16 19:28:50,832 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 503 treesize of output 344 [2022-11-16 19:28:50,846 INFO L350 Elim1Store]: Elim1 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 158 treesize of output 130 [2022-11-16 19:28:50,858 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-11-16 19:28:50,978 INFO L321 Elim1Store]: treesize reduction 116, result has 4.1 percent of original size [2022-11-16 19:28:50,979 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 355 treesize of output 362 [2022-11-16 19:28:50,996 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:50,997 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,002 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,005 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,008 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,011 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,019 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,022 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,027 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,196 INFO L321 Elim1Store]: treesize reduction 308, result has 16.5 percent of original size [2022-11-16 19:28:51,196 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 16 case distinctions, treesize of input 235 treesize of output 289 [2022-11-16 19:28:51,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,241 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,246 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:28:51,375 INFO L321 Elim1Store]: treesize reduction 152, result has 28.6 percent of original size [2022-11-16 19:28:51,375 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 8 select indices, 8 select index equivalence classes, 24 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 69 treesize of output 132 [2022-11-16 19:28:51,568 INFO L321 Elim1Store]: treesize reduction 26, result has 23.5 percent of original size [2022-11-16 19:28:51,568 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 164 treesize of output 141 [2022-11-16 19:28:51,582 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2022-11-16 19:28:51,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 9 [2022-11-16 19:28:58,215 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-16 19:28:58,215 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 869 treesize of output 743 [2022-11-16 19:28:58,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 736 treesize of output 660 [2022-11-16 19:28:58,239 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 10 new quantified variables, introduced 0 case distinctions, treesize of input 759 treesize of output 855 [2022-11-16 19:28:58,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:58,846 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:58,928 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:58,978 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 308 treesize of output 359 [2022-11-16 19:28:59,168 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:59,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:59,247 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:59,364 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:59,428 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:59,461 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2022-11-16 19:28:59,698 INFO L350 Elim1Store]: Elim1 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 195 treesize of output 115 [2022-11-16 19:28:59,796 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 19:28:59,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 19:29:00,803 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1178 (Array Int Int)) (v_ArrVal_1177 (Array Int Int))) (= (let ((.cse3 (* |c_ULTIMATE.start_main_~index~0#1| 4))) (let ((.cse0 (store (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1178) |c_ULTIMATE.start_main_~#array2~0#1.base|) (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3) (let ((.cse4 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| v_ArrVal_1177) |c_ULTIMATE.start_main_~#array2~0#1.base|))) (+ (select .cse4 (+ (- 4) |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3)) (select .cse4 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| .cse3 4))))))) (let ((.cse1 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base| (let ((.cse2 (select |c_#memory_int| |c_ULTIMATE.start_main_~#array1~0#1.base|))) (store .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3) (+ (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| .cse3 4)) (select .cse2 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| (- 4) .cse3)))))) |c_ULTIMATE.start_main_~#array2~0#1.base| .cse0) |c_ULTIMATE.start_main_~#array1~0#1.base|))) (+ (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 20)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 8)) (select .cse0 (+ 16 |c_ULTIMATE.start_main_~#array2~0#1.offset|)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 8)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 12)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 20)) (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 4)) |c_ULTIMATE.start_main_~sum~0#1| (select .cse1 (+ |c_ULTIMATE.start_main_~#array1~0#1.offset| 16)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 12)) (select .cse0 (+ |c_ULTIMATE.start_main_~#array2~0#1.offset| 4)) (select .cse1 |c_ULTIMATE.start_main_~#array1~0#1.offset|) (select .cse0 |c_ULTIMATE.start_main_~#array2~0#1.offset|))))) 0)) (not (< 5 c_~ARR_SIZE~0))) is different from false [2022-11-16 19:29:03,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 19:29:03,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735590350] [2022-11-16 19:29:03,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-16 19:29:03,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849439349] [2022-11-16 19:29:03,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849439349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 19:29:03,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1870785420] [2022-11-16 19:29:03,131 INFO L159 IcfgInterpreter]: Started Sifa with 15 locations of interest [2022-11-16 19:29:03,131 INFO L166 IcfgInterpreter]: Building call graph [2022-11-16 19:29:03,131 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-16 19:29:03,131 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-16 19:29:03,132 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-16 19:29:03,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,253 INFO L321 Elim1Store]: treesize reduction 135, result has 25.0 percent of original size [2022-11-16 19:29:03,254 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 79 [2022-11-16 19:29:03,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,359 INFO L321 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-11-16 19:29:03,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 10 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 9 case distinctions, treesize of input 44 treesize of output 69 [2022-11-16 19:29:03,384 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,385 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,386 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 35 [2022-11-16 19:29:03,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,450 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,454 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,544 INFO L321 Elim1Store]: treesize reduction 272, result has 16.3 percent of original size [2022-11-16 19:29:03,544 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 415 treesize of output 408 [2022-11-16 19:29:03,714 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,739 INFO L321 Elim1Store]: treesize reduction 22, result has 51.1 percent of original size [2022-11-16 19:29:03,740 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 40 [2022-11-16 19:29:03,791 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,797 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,799 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:03,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,801 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,802 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:03,818 INFO L321 Elim1Store]: treesize reduction 39, result has 25.0 percent of original size [2022-11-16 19:29:03,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 99 treesize of output 75 [2022-11-16 19:29:03,881 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 71 for LOIs [2022-11-16 19:29:03,897 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-16 19:29:06,371 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4686#(and (<= 0 |ULTIMATE.start_main_~count~0#1|) (<= 0 (+ 32768 |ULTIMATE.start_main_~index~0#1|)) (<= |ULTIMATE.start_main_~index~0#1| 32767) (= |ULTIMATE.start_main_~temp~0#1| 0) (= |ULTIMATE.start_main_~#array2~0#1.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 (+ ~ARR_SIZE~0 32768)) (<= 0 |ULTIMATE.start_main_~#array1~0#1.base|) (<= (+ |ULTIMATE.start_main_~num~0#1| 1) 0) (<= 0 (+ |ULTIMATE.start_main_~num~0#1| 1)) (not (< |ULTIMATE.start_main_~count~0#1| ~ARR_SIZE~0)) (= |ULTIMATE.start_main_~#array1~0#1.offset| 0) (= |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)) (<= 0 |ULTIMATE.start_main_~#array2~0#1.base|) (<= ~ARR_SIZE~0 32767) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-16 19:29:06,371 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-16 19:29:06,371 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-16 19:29:06,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-11-16 19:29:06,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835387497] [2022-11-16 19:29:06,372 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-16 19:29:06,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-16 19:29:06,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 19:29:06,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-16 19:29:06,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=1803, Unknown=4, NotChecked=88, Total=2162 [2022-11-16 19:29:06,374 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:29:07,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 19:29:07,280 INFO L93 Difference]: Finished difference Result 109 states and 122 transitions. [2022-11-16 19:29:07,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-16 19:29:07,281 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2022-11-16 19:29:07,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 19:29:07,282 INFO L225 Difference]: With dead ends: 109 [2022-11-16 19:29:07,282 INFO L226 Difference]: Without dead ends: 106 [2022-11-16 19:29:07,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=293, Invalid=2059, Unknown=4, NotChecked=94, Total=2450 [2022-11-16 19:29:07,283 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 44 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 103 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-16 19:29:07,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 162 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 194 Invalid, 0 Unknown, 103 Unchecked, 0.6s Time] [2022-11-16 19:29:07,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-11-16 19:29:07,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 89. [2022-11-16 19:29:07,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 68 states have (on average 1.161764705882353) internal successors, (79), 68 states have internal predecessors, (79), 10 states have call successors, (10), 10 states have call predecessors, (10), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-16 19:29:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 99 transitions. [2022-11-16 19:29:07,331 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 99 transitions. Word has length 28 [2022-11-16 19:29:07,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 19:29:07,331 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 99 transitions. [2022-11-16 19:29:07,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 19:29:07,331 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 99 transitions. [2022-11-16 19:29:07,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-16 19:29:07,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 19:29:07,332 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 19:29:07,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-16 19:29:07,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-16 19:29:07,533 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 19:29:07,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 19:29:07,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1177873296, now seen corresponding path program 2 times [2022-11-16 19:29:07,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 19:29:07,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598744017] [2022-11-16 19:29:07,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 19:29:07,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 19:29:07,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-16 19:29:07,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1255117423] [2022-11-16 19:29:07,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-16 19:29:07,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 19:29:07,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 19:29:07,554 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 19:29:07,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5e199658-decd-479d-a671-ac497a1544a3/bin/utaipan-Xvt2sAort0/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-16 19:29:08,009 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-16 19:29:08,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-16 19:29:08,012 WARN L261 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 117 conjunts are in the unsatisfiable core [2022-11-16 19:29:08,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 19:29:08,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-11-16 19:29:08,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 23 [2022-11-16 19:29:08,055 INFO L350 Elim1Store]: Elim1 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 8 treesize of output 7 [2022-11-16 19:29:08,059 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2022-11-16 19:29:08,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 57 [2022-11-16 19:29:08,107 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,110 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2022-11-16 19:29:08,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,116 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,117 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 59 [2022-11-16 19:29:08,204 INFO L321 Elim1Store]: treesize reduction 32, result has 13.5 percent of original size [2022-11-16 19:29:08,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 101 treesize of output 82 [2022-11-16 19:29:08,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 41 [2022-11-16 19:29:08,235 INFO L321 Elim1Store]: treesize reduction 49, result has 9.3 percent of original size [2022-11-16 19:29:08,235 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 62 treesize of output 71 [2022-11-16 19:29:08,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,244 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,248 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 38 [2022-11-16 19:29:08,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,260 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 34 [2022-11-16 19:29:08,272 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:08,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 47 [2022-11-16 19:29:08,278 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,279 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:08,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,281 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:08,282 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 3 disjoint index pairs (out of 15 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 24 [2022-11-16 19:29:08,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2022-11-16 19:29:08,423 INFO L321 Elim1Store]: treesize reduction 55, result has 8.3 percent of original size [2022-11-16 19:29:08,423 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 257 treesize of output 177 [2022-11-16 19:29:08,453 INFO L321 Elim1Store]: treesize reduction 86, result has 5.5 percent of original size [2022-11-16 19:29:08,453 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 201 treesize of output 182 [2022-11-16 19:29:08,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,515 INFO L321 Elim1Store]: treesize reduction 76, result has 25.5 percent of original size [2022-11-16 19:29:08,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 155 treesize of output 115 [2022-11-16 19:29:08,526 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:08,585 INFO L321 Elim1Store]: treesize reduction 157, result has 14.2 percent of original size [2022-11-16 19:29:08,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 95 treesize of output 108 [2022-11-16 19:29:08,599 INFO L350 Elim1Store]: Elim1 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 31 treesize of output 28 [2022-11-16 19:29:08,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 26 [2022-11-16 19:29:08,630 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 19 [2022-11-16 19:29:09,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,617 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,618 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,621 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,625 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,628 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,629 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:09,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,636 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:09,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,642 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,643 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,644 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:09,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,651 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:09,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,659 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:09,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:09,665 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-16 19:29:09,982 INFO L321 Elim1Store]: treesize reduction 684, result has 9.8 percent of original size [2022-11-16 19:29:09,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 12 select indices, 12 select index equivalence classes, 13 disjoint index pairs (out of 66 index pairs), introduced 12 new quantified variables, introduced 71 case distinctions, treesize of input 261 treesize of output 218 [2022-11-16 19:29:12,404 INFO L321 Elim1Store]: treesize reduction 46, result has 9.8 percent of original size [2022-11-16 19:29:12,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 561 treesize of output 396 [2022-11-16 19:29:12,421 INFO L350 Elim1Store]: Elim1 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 158 treesize of output 130 [2022-11-16 19:29:12,441 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 130 treesize of output 151 [2022-11-16 19:29:12,543 INFO L321 Elim1Store]: treesize reduction 111, result has 8.3 percent of original size [2022-11-16 19:29:12,543 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 5 case distinctions, treesize of input 384 treesize of output 407 [2022-11-16 19:29:12,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,593 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,604 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,612 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,622 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:12,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,816 INFO L321 Elim1Store]: treesize reduction 380, result has 34.4 percent of original size [2022-11-16 19:29:13,818 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 10 select indices, 10 select index equivalence classes, 16 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 39 case distinctions, treesize of input 231 treesize of output 390 [2022-11-16 19:29:13,847 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,849 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,857 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,864 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,876 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,879 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:13,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:29:15,046 INFO L321 Elim1Store]: treesize reduction 642, result has 23.7 percent of original size [2022-11-16 19:29:15,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 10 select indices, 10 select index equivalence classes, 19 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 224 treesize of output 436 [2022-11-16 19:29:55,297 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 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 128 treesize of output 120 [2022-11-16 19:29:55,322 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 58 [2022-11-16 19:30:06,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-16 19:30:06,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 899 treesize of output 703 [2022-11-16 19:30:06,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 675 treesize of output 667 [2022-11-16 19:30:14,251 WARN L233 SmtUtils]: Spent 7.75s on a formula simplification that was a NOOP. DAG size: 723 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 19:30:14,252 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:30:14,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 20 select indices, 20 select index equivalence classes, 10 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 180 case distinctions, treesize of input 879 treesize of output 2849 [2022-11-16 19:30:14,483 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 884 treesize of output 868 [2022-11-16 19:30:15,380 INFO L217 Elim1Store]: Index analysis took 772 ms [2022-11-16 19:30:27,092 WARN L233 SmtUtils]: Spent 11.71s on a formula simplification that was a NOOP. DAG size: 723 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-16 19:30:27,093 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-16 19:30:27,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 20 select indices, 20 select index equivalence classes, 19 disjoint index pairs (out of 190 index pairs), introduced 20 new quantified variables, introduced 171 case distinctions, treesize of input 1271 treesize of output 3051 [2022-11-16 19:30:27,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 650 treesize of output 648 [2022-11-16 19:30:27,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 648 treesize of output 646 [2022-11-16 19:30:27,875 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 646 treesize of output 644 [2022-11-16 19:30:28,145 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 644 treesize of output 636