./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-acceleration/nested_1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-acceleration/nested_1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW --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 8828f6ff39cd2bcfba4fe3d04f0119d60137bcad91eabef2e2b840cbd0802b98 --- 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-4e7fbc6 [2022-11-23 14:36:52,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:36:52,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:36:52,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:36:52,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:36:52,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:36:52,167 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:36:52,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:36:52,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:36:52,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:36:52,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:36:52,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:36:52,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:36:52,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:36:52,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:36:52,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:36:52,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:36:52,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:36:52,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:36:52,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:36:52,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:36:52,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:36:52,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:36:52,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:36:52,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:36:52,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:36:52,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:36:52,206 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:36:52,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:36:52,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:36:52,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:36:52,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:36:52,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:36:52,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:36:52,214 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:36:52,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:36:52,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:36:52,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:36:52,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:36:52,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:36:52,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:36:52,221 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:36:52,250 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:36:52,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:36:52,251 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:36:52,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:36:52,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:36:52,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:36:52,254 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:36:52,254 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:36:52,254 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:36:52,255 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:36:52,255 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:36:52,256 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:36:52,256 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:36:52,256 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:36:52,257 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:36:52,257 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:36:52,258 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:36:52,258 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:36:52,259 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:36:52,259 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:36:52,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:36:52,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:36:52,260 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:36:52,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:36:52,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:36:52,262 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:36:52,262 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:36:52,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:36:52,263 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:36:52,263 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:36:52,263 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:36:52,264 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:36:52,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:36:52,264 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:36:52,265 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:36:52,265 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:36:52,265 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:36:52,265 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:36:52,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:36:52,266 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:36:52,266 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:36:52,267 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_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8828f6ff39cd2bcfba4fe3d04f0119d60137bcad91eabef2e2b840cbd0802b98 [2022-11-23 14:36:52,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:36:52,615 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:36:52,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:36:52,620 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:36:52,621 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:36:52,623 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/loop-acceleration/nested_1-2.c [2022-11-23 14:36:55,943 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:36:56,135 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:36:56,136 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/sv-benchmarks/c/loop-acceleration/nested_1-2.c [2022-11-23 14:36:56,143 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/data/465995484/2a76cbe0b9b9455b83997d55c990962c/FLAGe567669b7 [2022-11-23 14:36:56,160 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/data/465995484/2a76cbe0b9b9455b83997d55c990962c [2022-11-23 14:36:56,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:36:56,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:36:56,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:36:56,167 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:36:56,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:36:56,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dde425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56, skipping insertion in model container [2022-11-23 14:36:56,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:36:56,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:36:56,353 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/sv-benchmarks/c/loop-acceleration/nested_1-2.c[322,335] [2022-11-23 14:36:56,367 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:36:56,375 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:36:56,385 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/sv-benchmarks/c/loop-acceleration/nested_1-2.c[322,335] [2022-11-23 14:36:56,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:36:56,403 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:36:56,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56 WrapperNode [2022-11-23 14:36:56,404 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:36:56,405 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:36:56,405 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:36:56,405 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:36:56,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,435 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-23 14:36:56,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:36:56,436 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:36:56,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:36:56,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:36:56,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,448 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,452 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,453 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:36:56,457 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:36:56,458 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:36:56,458 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:36:56,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (1/1) ... [2022-11-23 14:36:56,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:36:56,478 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:56,491 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:36:56,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:36:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:36:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:36:56,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:36:56,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:36:56,595 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:36:56,597 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:36:56,702 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:36:56,734 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:36:56,734 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-23 14:36:56,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:56 BoogieIcfgContainer [2022-11-23 14:36:56,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:36:56,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:36:56,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:36:56,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:36:56,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:36:56" (1/3) ... [2022-11-23 14:36:56,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7fdfa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:56, skipping insertion in model container [2022-11-23 14:36:56,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:36:56" (2/3) ... [2022-11-23 14:36:56,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7fdfa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:36:56, skipping insertion in model container [2022-11-23 14:36:56,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:36:56" (3/3) ... [2022-11-23 14:36:56,747 INFO L112 eAbstractionObserver]: Analyzing ICFG nested_1-2.c [2022-11-23 14:36:56,766 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:36:56,766 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:36:56,813 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:36:56,819 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;@33ef160f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:36:56,820 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:36:56,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:56,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-23 14:36:56,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:56,831 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-23 14:36:56,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2252617, now seen corresponding path program 1 times [2022-11-23 14:36:56,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:56,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383687765] [2022-11-23 14:36:56,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:56,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:57,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:57,091 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:57,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383687765] [2022-11-23 14:36:57,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383687765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:36:57,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:36:57,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:36:57,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513416219] [2022-11-23 14:36:57,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:36:57,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:36:57,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:57,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:36:57,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:57,141 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:57,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:57,198 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2022-11-23 14:36:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:36:57,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-23 14:36:57,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:57,209 INFO L225 Difference]: With dead ends: 15 [2022-11-23 14:36:57,209 INFO L226 Difference]: Without dead ends: 8 [2022-11-23 14:36:57,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:57,216 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 2 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:57,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:36:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-23 14:36:57,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2022-11-23 14:36:57,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:57,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 8 transitions. [2022-11-23 14:36:57,249 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 8 transitions. Word has length 4 [2022-11-23 14:36:57,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:57,249 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 8 transitions. [2022-11-23 14:36:57,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 8 transitions. [2022-11-23 14:36:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-23 14:36:57,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:57,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-23 14:36:57,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:36:57,251 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:57,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:57,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2130164165, now seen corresponding path program 1 times [2022-11-23 14:36:57,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:57,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080106311] [2022-11-23 14:36:57,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:57,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:57,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:57,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080106311] [2022-11-23 14:36:57,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080106311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:36:57,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:36:57,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:36:57,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743008072] [2022-11-23 14:36:57,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:36:57,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:36:57,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:57,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:36:57,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:57,335 INFO L87 Difference]: Start difference. First operand 7 states and 8 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:57,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:57,352 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2022-11-23 14:36:57,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:36:57,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-23 14:36:57,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:57,353 INFO L225 Difference]: With dead ends: 13 [2022-11-23 14:36:57,353 INFO L226 Difference]: Without dead ends: 8 [2022-11-23 14:36:57,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:36:57,355 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:57,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:36:57,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-11-23 14:36:57,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-11-23 14:36:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:57,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2022-11-23 14:36:57,359 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 9 transitions. Word has length 6 [2022-11-23 14:36:57,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:57,360 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 9 transitions. [2022-11-23 14:36:57,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:57,360 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 9 transitions. [2022-11-23 14:36:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-23 14:36:57,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:57,361 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:57,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:36:57,361 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:57,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1585602295, now seen corresponding path program 1 times [2022-11-23 14:36:57,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:57,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959473147] [2022-11-23 14:36:57,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:57,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:57,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:57,499 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:57,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959473147] [2022-11-23 14:36:57,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959473147] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:57,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741227690] [2022-11-23 14:36:57,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:57,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:57,500 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:57,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:57,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:36:57,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:57,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:36:57,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:57,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:57,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:57,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741227690] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1174722083] [2022-11-23 14:36:57,791 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:36:57,791 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:57,793 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:57,799 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:57,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:58,252 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:58,355 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '122#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:58,355 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:58,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:58,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-23 14:36:58,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499998051] [2022-11-23 14:36:58,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:58,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:36:58,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:58,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:36:58,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:36:58,357 INFO L87 Difference]: Start difference. First operand 8 states and 9 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:36:58,413 INFO L93 Difference]: Finished difference Result 17 states and 22 transitions. [2022-11-23 14:36:58,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:36:58,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-23 14:36:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:36:58,415 INFO L225 Difference]: With dead ends: 17 [2022-11-23 14:36:58,415 INFO L226 Difference]: Without dead ends: 11 [2022-11-23 14:36:58,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:36:58,422 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:36:58,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:36:58,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-11-23 14:36:58,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-11-23 14:36:58,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-23 14:36:58,433 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 7 [2022-11-23 14:36:58,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:36:58,434 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-23 14:36:58,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:36:58,434 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-23 14:36:58,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 14:36:58,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:36:58,436 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-23 14:36:58,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:36:58,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:58,642 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:36:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:36:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1594914373, now seen corresponding path program 2 times [2022-11-23 14:36:58,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:36:58,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308652813] [2022-11-23 14:36:58,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:36:58,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:36:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:36:58,889 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:36:58,889 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:36:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308652813] [2022-11-23 14:36:58,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308652813] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:36:58,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941897371] [2022-11-23 14:36:58,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:36:58,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:36:58,891 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:36:58,892 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:36:58,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:36:58,969 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-23 14:36:58,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:36:58,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:36:58,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:36:59,022 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:36:59,023 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:36:59,088 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-23 14:36:59,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941897371] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:36:59,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [258464652] [2022-11-23 14:36:59,096 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:36:59,097 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:36:59,097 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:36:59,097 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:36:59,098 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:36:59,439 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:36:59,818 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '237#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:36:59,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:36:59,818 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:36:59,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 3, 3] total 11 [2022-11-23 14:36:59,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256482871] [2022-11-23 14:36:59,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:36:59,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:36:59,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:36:59,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:36:59,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:36:59,821 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:00,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:00,416 INFO L93 Difference]: Finished difference Result 42 states and 54 transitions. [2022-11-23 14:37:00,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-23 14:37:00,417 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 14:37:00,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:00,418 INFO L225 Difference]: With dead ends: 42 [2022-11-23 14:37:00,418 INFO L226 Difference]: Without dead ends: 33 [2022-11-23 14:37:00,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=239, Invalid=951, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:37:00,420 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 28 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:00,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 20 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:37:00,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-11-23 14:37:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-11-23 14:37:00,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.15625) internal successors, (37), 32 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:00,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2022-11-23 14:37:00,437 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 10 [2022-11-23 14:37:00,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:00,437 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2022-11-23 14:37:00,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:00,443 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2022-11-23 14:37:00,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 14:37:00,445 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:00,445 INFO L195 NwaCegarLoop]: trace histogram [20, 4, 4, 1, 1, 1, 1] [2022-11-23 14:37:00,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:37:00,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-23 14:37:00,666 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:00,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:00,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1777225673, now seen corresponding path program 3 times [2022-11-23 14:37:00,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:00,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594768128] [2022-11-23 14:37:00,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:00,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 112 proven. 15 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2022-11-23 14:37:00,900 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:00,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594768128] [2022-11-23 14:37:00,901 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594768128] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:37:00,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2078764262] [2022-11-23 14:37:00,901 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:37:00,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:00,901 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:00,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:37:00,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:37:00,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:37:00,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:37:00,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-23 14:37:00,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:37:01,211 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 0 proven. 241 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 14:37:01,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:37:01,607 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 5 proven. 236 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-23 14:37:01,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2078764262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:37:01,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [546384184] [2022-11-23 14:37:01,610 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:37:01,610 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:37:01,610 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:37:01,612 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:37:01,612 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:37:01,801 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:37:03,015 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '636#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:37:03,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:37:03,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:37:03,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2022-11-23 14:37:03,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530549497] [2022-11-23 14:37:03,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:37:03,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-23 14:37:03,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:03,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-23 14:37:03,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=743, Unknown=0, NotChecked=0, Total=930 [2022-11-23 14:37:03,018 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:09,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:09,397 INFO L93 Difference]: Finished difference Result 110 states and 139 transitions. [2022-11-23 14:37:09,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-11-23 14:37:09,398 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-11-23 14:37:09,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:09,399 INFO L225 Difference]: With dead ends: 110 [2022-11-23 14:37:09,399 INFO L226 Difference]: Without dead ends: 85 [2022-11-23 14:37:09,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 49 SyntacticMatches, 24 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3194 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1662, Invalid=7080, Unknown=0, NotChecked=0, Total=8742 [2022-11-23 14:37:09,403 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 108 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:09,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 24 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:37:09,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2022-11-23 14:37:09,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2022-11-23 14:37:09,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 84 states have (on average 1.130952380952381) internal successors, (95), 84 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:09,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2022-11-23 14:37:09,425 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 32 [2022-11-23 14:37:09,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:09,425 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2022-11-23 14:37:09,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.7857142857142858) internal successors, (50), 28 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:09,426 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2022-11-23 14:37:09,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-23 14:37:09,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:09,428 INFO L195 NwaCegarLoop]: trace histogram [60, 10, 10, 1, 1, 1, 1] [2022-11-23 14:37:09,438 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-23 14:37:09,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:09,638 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:09,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:09,639 INFO L85 PathProgramCache]: Analyzing trace with hash 781465505, now seen corresponding path program 4 times [2022-11-23 14:37:09,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:09,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911918565] [2022-11-23 14:37:09,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:09,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:09,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 451 proven. 21 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2022-11-23 14:37:10,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:10,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911918565] [2022-11-23 14:37:10,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911918565] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:37:10,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194909807] [2022-11-23 14:37:10,129 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:37:10,129 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:10,129 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:10,135 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:37:10,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:37:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:10,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-23 14:37:10,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:37:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 451 proven. 21 refuted. 0 times theorem prover too weak. 1998 trivial. 0 not checked. [2022-11-23 14:37:10,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:37:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2470 backedges. 1210 proven. 771 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2022-11-23 14:37:10,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194909807] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:37:10,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1078685287] [2022-11-23 14:37:10,922 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:37:10,922 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:37:10,923 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:37:10,923 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:37:10,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:37:11,102 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:37:13,474 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '1672#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:37:13,475 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:37:13,475 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:37:13,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 15] total 30 [2022-11-23 14:37:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328099932] [2022-11-23 14:37:13,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:37:13,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-11-23 14:37:13,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:13,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-11-23 14:37:13,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=876, Unknown=0, NotChecked=0, Total=1056 [2022-11-23 14:37:13,478 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:26,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:26,598 INFO L93 Difference]: Finished difference Result 606 states and 824 transitions. [2022-11-23 14:37:26,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-11-23 14:37:26,599 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2022-11-23 14:37:26,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:26,603 INFO L225 Difference]: With dead ends: 606 [2022-11-23 14:37:26,603 INFO L226 Difference]: Without dead ends: 332 [2022-11-23 14:37:26,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 158 SyntacticMatches, 70 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=1693, Invalid=7619, Unknown=0, NotChecked=0, Total=9312 [2022-11-23 14:37:26,608 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 72 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:26,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 34 Invalid, 788 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:37:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-23 14:37:26,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 266. [2022-11-23 14:37:26,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 265 states have (on average 1.1849056603773584) internal successors, (314), 265 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:26,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 314 transitions. [2022-11-23 14:37:26,696 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 314 transitions. Word has length 84 [2022-11-23 14:37:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:26,697 INFO L495 AbstractCegarLoop]: Abstraction has 266 states and 314 transitions. [2022-11-23 14:37:26,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 1.6) internal successors, (48), 30 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 314 transitions. [2022-11-23 14:37:26,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-23 14:37:26,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:26,701 INFO L195 NwaCegarLoop]: trace histogram [82, 10, 10, 1, 1, 1, 1] [2022-11-23 14:37:26,711 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-23 14:37:26,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:26,916 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:26,916 INFO L85 PathProgramCache]: Analyzing trace with hash -409663111, now seen corresponding path program 5 times [2022-11-23 14:37:26,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:26,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206567503] [2022-11-23 14:37:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:26,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4241 backedges. 2462 proven. 28 refuted. 0 times theorem prover too weak. 1751 trivial. 0 not checked. [2022-11-23 14:37:27,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:27,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206567503] [2022-11-23 14:37:27,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206567503] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:37:27,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670954120] [2022-11-23 14:37:27,392 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:37:27,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:27,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:27,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:37:27,421 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:37:27,637 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2022-11-23 14:37:27,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:37:27,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 14:37:27,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:37:27,792 INFO L134 CoverageAnalysis]: Checked inductivity of 4241 backedges. 618 proven. 720 refuted. 0 times theorem prover too weak. 2903 trivial. 0 not checked. [2022-11-23 14:37:27,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:37:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4241 backedges. 682 proven. 28 refuted. 0 times theorem prover too weak. 3531 trivial. 0 not checked. [2022-11-23 14:37:27,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670954120] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:37:27,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [311379820] [2022-11-23 14:37:27,980 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:37:27,980 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:37:27,980 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:37:27,980 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:37:27,981 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:37:28,137 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:37:28,279 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '4179#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:37:28,279 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:37:28,279 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:37:28,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 19 [2022-11-23 14:37:28,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724550283] [2022-11-23 14:37:28,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:37:28,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-23 14:37:28,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:28,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-23 14:37:28,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:37:28,281 INFO L87 Difference]: Start difference. First operand 266 states and 314 transitions. Second operand has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:28,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:28,437 INFO L93 Difference]: Finished difference Result 269 states and 316 transitions. [2022-11-23 14:37:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:37:28,438 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2022-11-23 14:37:28,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:28,446 INFO L225 Difference]: With dead ends: 269 [2022-11-23 14:37:28,446 INFO L226 Difference]: Without dead ends: 125 [2022-11-23 14:37:28,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 304 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2022-11-23 14:37:28,452 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 21 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 [2022-11-23 14:37:28,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 21 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:37:28,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-11-23 14:37:28,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-11-23 14:37:28,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.0887096774193548) internal successors, (135), 124 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 135 transitions. [2022-11-23 14:37:28,501 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 135 transitions. Word has length 106 [2022-11-23 14:37:28,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:28,503 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 135 transitions. [2022-11-23 14:37:28,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 1.631578947368421) internal successors, (31), 19 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:28,504 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 135 transitions. [2022-11-23 14:37:28,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-23 14:37:28,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:28,511 INFO L195 NwaCegarLoop]: trace histogram [100, 10, 10, 1, 1, 1, 1] [2022-11-23 14:37:28,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:37:28,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:28,717 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:28,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:28,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1113288353, now seen corresponding path program 6 times [2022-11-23 14:37:28,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:28,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845568537] [2022-11-23 14:37:28,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:28,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:28,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:29,470 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 5500 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-23 14:37:29,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:29,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845568537] [2022-11-23 14:37:29,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845568537] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:37:29,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670057637] [2022-11-23 14:37:29,471 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:37:29,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:29,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:29,475 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:37:29,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-23 14:37:29,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:37:29,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:37:29,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-23 14:37:29,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:37:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 5555 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2022-11-23 14:37:30,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:37:30,854 INFO L134 CoverageAnalysis]: Checked inductivity of 6050 backedges. 0 proven. 5500 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2022-11-23 14:37:30,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670057637] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:37:30,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1279918420] [2022-11-23 14:37:30,856 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:37:30,856 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:37:30,857 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:37:30,857 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:37:30,857 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:37:30,991 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:37:34,547 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '5734#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:37:34,547 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:37:34,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:37:34,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 22, 12] total 34 [2022-11-23 14:37:34,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196229760] [2022-11-23 14:37:34,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:37:34,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-23 14:37:34,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:34,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-23 14:37:34,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=1057, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:37:34,550 INFO L87 Difference]: Start difference. First operand 125 states and 135 transitions. Second operand has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:42,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:37:42,923 INFO L93 Difference]: Finished difference Result 272 states and 305 transitions. [2022-11-23 14:37:42,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-23 14:37:42,923 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-11-23 14:37:42,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:37:42,925 INFO L225 Difference]: With dead ends: 272 [2022-11-23 14:37:42,926 INFO L226 Difference]: Without dead ends: 269 [2022-11-23 14:37:42,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 235 SyntacticMatches, 111 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3160 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=699, Invalid=1557, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 14:37:42,927 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 54 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:37:42,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 157 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:37:42,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2022-11-23 14:37:42,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 269. [2022-11-23 14:37:42,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.085820895522388) internal successors, (291), 268 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:42,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2022-11-23 14:37:42,990 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 124 [2022-11-23 14:37:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:37:42,994 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2022-11-23 14:37:42,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.257142857142857) internal successors, (79), 34 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:37:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2022-11-23 14:37:43,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-11-23 14:37:43,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:37:43,003 INFO L195 NwaCegarLoop]: trace histogram [220, 22, 22, 1, 1, 1, 1] [2022-11-23 14:37:43,017 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:37:43,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:43,212 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:37:43,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:37:43,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1876164465, now seen corresponding path program 7 times [2022-11-23 14:37:43,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:37:43,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599608136] [2022-11-23 14:37:43,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:37:43,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:37:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:45,855 INFO L134 CoverageAnalysis]: Checked inductivity of 29414 backedges. 0 proven. 28204 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-23 14:37:45,856 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:37:45,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599608136] [2022-11-23 14:37:45,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599608136] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:37:45,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052358476] [2022-11-23 14:37:45,857 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:37:45,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:37:45,857 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:37:45,859 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:37:45,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-23 14:37:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:37:46,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-23 14:37:46,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:37:47,246 INFO L134 CoverageAnalysis]: Checked inductivity of 29414 backedges. 0 proven. 28204 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-23 14:37:47,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:37:48,960 INFO L134 CoverageAnalysis]: Checked inductivity of 29414 backedges. 0 proven. 28204 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2022-11-23 14:37:48,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052358476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:37:48,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2032488094] [2022-11-23 14:37:48,963 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:37:48,963 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:37:48,963 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:37:48,964 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:37:48,964 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:37:49,081 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:37:49,387 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '8479#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:37:49,387 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:37:49,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:37:49,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2022-11-23 14:37:49,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801853050] [2022-11-23 14:37:49,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:37:49,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-23 14:37:49,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:37:49,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-23 14:37:49,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=1973, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 14:37:49,390 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand has 49 states, 49 states have (on average 2.857142857142857) internal successors, (140), 48 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:40:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:40:25,084 INFO L93 Difference]: Finished difference Result 560 states and 629 transitions. [2022-11-23 14:40:25,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-11-23 14:40:25,085 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.857142857142857) internal successors, (140), 48 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 268 [2022-11-23 14:40:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:40:25,087 INFO L225 Difference]: With dead ends: 560 [2022-11-23 14:40:25,088 INFO L226 Difference]: Without dead ends: 557 [2022-11-23 14:40:25,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 848 GetRequests, 775 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 156.8s TimeCoverageRelationStatistics Valid=1752, Invalid=3645, Unknown=5, NotChecked=0, Total=5402 [2022-11-23 14:40:25,090 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 140 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 1181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:40:25,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 605 Invalid, 1181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:40:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2022-11-23 14:40:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 557. [2022-11-23 14:40:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 556 states have (on average 1.0845323741007193) internal successors, (603), 556 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:40:25,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 603 transitions. [2022-11-23 14:40:25,163 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 603 transitions. Word has length 268 [2022-11-23 14:40:25,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:40:25,164 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 603 transitions. [2022-11-23 14:40:25,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.857142857142857) internal successors, (140), 48 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:40:25,164 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 603 transitions. [2022-11-23 14:40:25,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 557 [2022-11-23 14:40:25,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:40:25,177 INFO L195 NwaCegarLoop]: trace histogram [460, 46, 46, 1, 1, 1, 1] [2022-11-23 14:40:25,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:40:25,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-23 14:40:25,386 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:40:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:40:25,386 INFO L85 PathProgramCache]: Analyzing trace with hash 320553233, now seen corresponding path program 8 times [2022-11-23 14:40:25,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:40:25,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404091131] [2022-11-23 14:40:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:40:25,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:40:26,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:40:31,971 INFO L134 CoverageAnalysis]: Checked inductivity of 128846 backedges. 0 proven. 126316 refuted. 0 times theorem prover too weak. 2530 trivial. 0 not checked. [2022-11-23 14:40:31,972 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:40:31,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404091131] [2022-11-23 14:40:31,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404091131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:40:31,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780629278] [2022-11-23 14:40:31,972 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-23 14:40:31,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:40:31,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:40:31,974 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:40:31,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-23 14:42:06,070 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 277 check-sat command(s) [2022-11-23 14:42:06,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:42:06,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 1693 conjuncts, 105 conjunts are in the unsatisfiable core [2022-11-23 14:42:06,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:42:08,085 INFO L134 CoverageAnalysis]: Checked inductivity of 128846 backedges. 0 proven. 126335 refuted. 0 times theorem prover too weak. 2511 trivial. 0 not checked. [2022-11-23 14:42:08,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:42:09,689 INFO L134 CoverageAnalysis]: Checked inductivity of 128846 backedges. 502 proven. 64562 refuted. 0 times theorem prover too weak. 63782 trivial. 0 not checked. [2022-11-23 14:42:09,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780629278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:42:09,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [481341303] [2022-11-23 14:42:09,692 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:42:09,692 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:42:09,692 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:42:09,693 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:42:09,693 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:42:09,830 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:42:40,495 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '14137#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:42:40,495 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:42:40,495 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:42:40,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 51, 6] total 57 [2022-11-23 14:42:40,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013997970] [2022-11-23 14:42:40,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:42:40,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-23 14:42:40,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:42:40,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-23 14:42:40,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=3382, Unknown=0, NotChecked=0, Total=3660 [2022-11-23 14:42:40,497 INFO L87 Difference]: Start difference. First operand 557 states and 603 transitions. Second operand has 58 states, 58 states have (on average 2.7586206896551726) internal successors, (160), 57 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:43,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:42:43,945 INFO L93 Difference]: Finished difference Result 596 states and 646 transitions. [2022-11-23 14:42:43,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-23 14:42:43,946 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 58 states have (on average 2.7586206896551726) internal successors, (160), 57 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 556 [2022-11-23 14:42:43,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:42:43,948 INFO L225 Difference]: With dead ends: 596 [2022-11-23 14:42:43,948 INFO L226 Difference]: Without dead ends: 592 [2022-11-23 14:42:43,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1739 GetRequests, 1148 SyntacticMatches, 507 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5515 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=450, Invalid=6860, Unknown=0, NotChecked=0, Total=7310 [2022-11-23 14:42:43,951 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 152 mSDsluCounter, 1489 mSDsCounter, 0 mSdLazyCounter, 3488 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 3612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 3488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:42:43,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1537 Invalid, 3612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 3488 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 14:42:43,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-11-23 14:42:44,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 569. [2022-11-23 14:42:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.0845070422535212) internal successors, (616), 568 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:44,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 616 transitions. [2022-11-23 14:42:44,019 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 616 transitions. Word has length 556 [2022-11-23 14:42:44,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:42:44,020 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 616 transitions. [2022-11-23 14:42:44,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 58 states have (on average 2.7586206896551726) internal successors, (160), 57 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:42:44,020 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 616 transitions. [2022-11-23 14:42:44,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2022-11-23 14:42:44,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:42:44,031 INFO L195 NwaCegarLoop]: trace histogram [470, 47, 47, 1, 1, 1, 1] [2022-11-23 14:42:44,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-23 14:42:44,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 14:42:44,252 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:42:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:42:44,252 INFO L85 PathProgramCache]: Analyzing trace with hash 2146291405, now seen corresponding path program 9 times [2022-11-23 14:42:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:42:44,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718041912] [2022-11-23 14:42:44,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:42:44,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:42:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:42:49,551 INFO L134 CoverageAnalysis]: Checked inductivity of 134514 backedges. 0 proven. 131929 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2022-11-23 14:42:49,552 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:42:49,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718041912] [2022-11-23 14:42:49,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718041912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:42:49,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335532397] [2022-11-23 14:42:49,552 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-23 14:42:49,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:42:49,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:42:49,555 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:42:49,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e711ca3-1a4c-4460-9ce5-a123c179ed76/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-23 14:42:50,124 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-23 14:42:50,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-23 14:42:50,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 1729 conjuncts, 97 conjunts are in the unsatisfiable core [2022-11-23 14:42:50,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:42:51,856 INFO L134 CoverageAnalysis]: Checked inductivity of 134514 backedges. 0 proven. 131929 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2022-11-23 14:42:51,856 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 14:42:57,866 INFO L134 CoverageAnalysis]: Checked inductivity of 134514 backedges. 0 proven. 131929 refuted. 0 times theorem prover too weak. 2585 trivial. 0 not checked. [2022-11-23 14:42:57,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335532397] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 14:42:57,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493556488] [2022-11-23 14:42:57,869 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2022-11-23 14:42:57,869 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 14:42:57,869 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 14:42:57,870 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 14:42:57,870 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 14:42:58,039 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-23 14:43:45,385 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '20009#(and (<= 0 |ULTIMATE.start_main_~x~0#1|) (<= 0 |ULTIMATE.start_main_~y~0#1|) (<= |#NULL.offset| 0) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (= |ULTIMATE.start___VERIFIER_assert_#in~cond#1| (ite (= (mod (mod |ULTIMATE.start_main_~x~0#1| 2) 4294967296) 0) 1 0)) (not (< (mod |ULTIMATE.start_main_~x~0#1| 4294967296) 268435455)) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (<= 0 |#NULL.offset|) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-23 14:43:45,385 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-23 14:43:45,385 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-23 14:43:45,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 98 [2022-11-23 14:43:45,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738122931] [2022-11-23 14:43:45,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-23 14:43:45,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 99 states [2022-11-23 14:43:45,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:43:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2022-11-23 14:43:45,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7698, Unknown=0, NotChecked=0, Total=10302 [2022-11-23 14:43:45,391 INFO L87 Difference]: Start difference. First operand 569 states and 616 transitions. Second operand has 99 states, 99 states have (on average 2.9292929292929295) internal successors, (290), 98 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:43:49,595 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 35) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 42) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 46) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 44) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 47) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455)) is different from false [2022-11-23 14:44:48,804 WARN L233 SmtUtils]: Spent 14.39s on a formula simplification. DAG size of input: 192 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:45:51,615 WARN L233 SmtUtils]: Spent 13.57s on a formula simplification. DAG size of input: 190 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:45:53,642 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 35) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 42) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 44) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455)) is different from false [2022-11-23 14:45:55,664 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 35) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 42) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 44) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 45) 4294967296) 268435455)) is different from false [2022-11-23 14:45:57,689 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 35) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 43) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 42) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 44) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 268435455)) is different from false [2022-11-23 14:47:12,571 WARN L233 SmtUtils]: Spent 17.72s on a formula simplification. DAG size of input: 180 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:48:15,752 WARN L233 SmtUtils]: Spent 13.37s on a formula simplification. DAG size of input: 178 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:49:34,705 WARN L233 SmtUtils]: Spent 20.53s on a formula simplification. DAG size of input: 174 DAG size of output: 10 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:49:36,756 WARN L837 $PredicateComparison]: unable to prove that (and (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 2) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 35) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 38) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 39) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 11) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 14) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 33) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 26) 4294967296) 268435455) (< (mod |c_ULTIMATE.start_main_~x~0#1| 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 20) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 17) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 5) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 4) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 24) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 6) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 29) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 10) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 22) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 34) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 36) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 31) 4294967296) 268435455) (< (mod (+ 41 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 13) 4294967296) 268435455) (< (mod (+ 23 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ 40 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 16) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 3) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 1) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 25) 4294967296) 268435455) (< (mod (+ 7 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 21) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 9) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 32) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 12) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 37) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 15) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 8) 4294967296) 268435455) (< (mod (+ 19 |c_ULTIMATE.start_main_~x~0#1|) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 18) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 27) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 28) 4294967296) 268435455) (< (mod (+ |c_ULTIMATE.start_main_~x~0#1| 30) 4294967296) 268435455)) is different from false [2022-11-23 14:50:55,020 WARN L233 SmtUtils]: Spent 16.92s on a formula simplification. DAG size of input: 168 DAG size of output: 12 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)