./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI --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 64bit --witnessprinter.graph.data.programhash 26db93204ab32e8f9e21f7eb034d2307b8352a18baf9236ed38d699dc2a3b5eb --- 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-5e519f3 [2022-11-03 02:29:15,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:29:15,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:29:15,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:29:15,166 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:29:15,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:29:15,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:29:15,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:29:15,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:29:15,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:29:15,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:29:15,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:29:15,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:29:15,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:29:15,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:29:15,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:29:15,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:29:15,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:29:15,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:29:15,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:29:15,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:29:15,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:29:15,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:29:15,220 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:29:15,226 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:29:15,231 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:29:15,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:29:15,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:29:15,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:29:15,236 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:29:15,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:29:15,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:29:15,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:29:15,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:29:15,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:29:15,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:29:15,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:29:15,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:29:15,244 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:29:15,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:29:15,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:29:15,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:29:15,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:29:15,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:29:15,297 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:29:15,297 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:29:15,298 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:29:15,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:29:15,299 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:29:15,299 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:29:15,299 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:29:15,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:29:15,301 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:29:15,301 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:29:15,301 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:29:15,302 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:29:15,302 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:29:15,302 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:29:15,302 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:29:15,303 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:29:15,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:29:15,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:29:15,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:29:15,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:29:15,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:29:15,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:29:15,306 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:29:15,307 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:29:15,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:29:15,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:29:15,307 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:29:15,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:29:15,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:29:15,308 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:29:15,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:29:15,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:29:15,309 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:29:15,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:29:15,310 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:29:15,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:29:15,310 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_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26db93204ab32e8f9e21f7eb034d2307b8352a18baf9236ed38d699dc2a3b5eb [2022-11-03 02:29:15,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:29:15,609 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:29:15,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:29:15,613 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:29:15,614 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:29:15,615 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c [2022-11-03 02:29:15,689 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data/10cc16c4c/48f1b2f3a87843708ece1ba717143406/FLAGe9c55925d [2022-11-03 02:29:16,185 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:29:16,185 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c [2022-11-03 02:29:16,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data/10cc16c4c/48f1b2f3a87843708ece1ba717143406/FLAGe9c55925d [2022-11-03 02:29:16,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data/10cc16c4c/48f1b2f3a87843708ece1ba717143406 [2022-11-03 02:29:16,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:29:16,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:29:16,514 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:29:16,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:29:16,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:29:16,519 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:29:16" (1/1) ... [2022-11-03 02:29:16,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cdc24cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:16, skipping insertion in model container [2022-11-03 02:29:16,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:29:16" (1/1) ... [2022-11-03 02:29:16,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:29:16,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:29:16,791 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c[1014,1027] [2022-11-03 02:29:17,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:29:17,073 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:29:17,094 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c[1014,1027] [2022-11-03 02:29:17,248 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:29:17,260 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:29:17,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17 WrapperNode [2022-11-03 02:29:17,261 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:29:17,262 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:29:17,262 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:29:17,262 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:29:17,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,301 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,492 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1254 [2022-11-03 02:29:17,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:29:17,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:29:17,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:29:17,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:29:17,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,640 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:29:17,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:29:17,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:29:17,694 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:29:17,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (1/1) ... [2022-11-03 02:29:17,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:29:17,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:17,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:29:17,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:29:17,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:29:17,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:29:18,083 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:29:18,086 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:29:22,223 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:29:26,452 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:29:26,452 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:29:26,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:26 BoogieIcfgContainer [2022-11-03 02:29:26,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:29:26,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:29:26,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:29:26,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:29:26,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:29:16" (1/3) ... [2022-11-03 02:29:26,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab2a26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:26, skipping insertion in model container [2022-11-03 02:29:26,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:29:17" (2/3) ... [2022-11-03 02:29:26,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ab2a26a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:26, skipping insertion in model container [2022-11-03 02:29:26,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:26" (3/3) ... [2022-11-03 02:29:26,465 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.loyd.1.prop1-func-interl.c [2022-11-03 02:29:26,486 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:29:26,486 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:29:26,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:29:26,539 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;@3c1cc20f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:29:26,540 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:29:26,544 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) 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) [2022-11-03 02:29:26,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:29:26,550 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:26,550 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:29:26,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:26,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash 16841943, now seen corresponding path program 1 times [2022-11-03 02:29:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:26,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920961929] [2022-11-03 02:29:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:26,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:26,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:27,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:27,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:29:27,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920961929] [2022-11-03 02:29:27,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920961929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:27,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:27,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:27,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891547154] [2022-11-03 02:29:27,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:27,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:29:27,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:29:27,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:29:27,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:29:27,589 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) 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) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 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) [2022-11-03 02:29:29,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [] [2022-11-03 02:29:29,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:29,829 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2022-11-03 02:29:29,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:29,832 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 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 [2022-11-03 02:29:29,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:29,840 INFO L225 Difference]: With dead ends: 15 [2022-11-03 02:29:29,841 INFO L226 Difference]: Without dead ends: 9 [2022-11-03 02:29:29,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:29,847 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:29,852 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 02:29:29,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-03 02:29:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2022-11-03 02:29:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-11-03 02:29:29,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-11-03 02:29:29,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2022-11-03 02:29:29,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:29,901 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-11-03 02:29:29,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 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) [2022-11-03 02:29:29,902 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-11-03 02:29:29,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-03 02:29:29,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:29,903 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-11-03 02:29:29,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:29:29,904 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -746236328, now seen corresponding path program 1 times [2022-11-03 02:29:29,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:29:29,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684978130] [2022-11-03 02:29:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:29,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:29:30,019 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:29:30,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [327535440] [2022-11-03 02:29:30,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:30,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:29:30,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:29:30,026 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:29:30,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:32:00,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:32:00,751 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:34:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:34:18,800 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:34:18,801 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:34:18,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:34:19,014 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2022-11-03 02:34:19,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137 [2022-11-03 02:34:19,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:34:19,091 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 02:34:19,095 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:34:19,200 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:34:19,200 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:34:19,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:34:19 BoogieIcfgContainer [2022-11-03 02:34:19,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:34:19,273 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:34:19,278 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:34:19,278 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:34:19,279 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:26" (3/4) ... [2022-11-03 02:34:19,281 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:34:19,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:34:19,282 INFO L158 Benchmark]: Toolchain (without parser) took 302769.47ms. Allocated memory was 96.5MB in the beginning and 725.6MB in the end (delta: 629.1MB). Free memory was 56.9MB in the beginning and 409.8MB in the end (delta: -352.8MB). Peak memory consumption was 276.0MB. Max. memory is 16.1GB. [2022-11-03 02:34:19,283 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:34:19,286 INFO L158 Benchmark]: CACSL2BoogieTranslator took 746.59ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 56.8MB in the beginning and 66.8MB in the end (delta: -10.0MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. [2022-11-03 02:34:19,287 INFO L158 Benchmark]: Boogie Procedure Inliner took 230.90ms. Allocated memory is still 117.4MB. Free memory was 66.8MB in the beginning and 82.5MB in the end (delta: -15.7MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2022-11-03 02:34:19,287 INFO L158 Benchmark]: Boogie Preprocessor took 199.29ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 74.0MB in the end (delta: 8.5MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. [2022-11-03 02:34:19,290 INFO L158 Benchmark]: RCFGBuilder took 8761.88ms. Allocated memory was 117.4MB in the beginning and 725.6MB in the end (delta: 608.2MB). Free memory was 74.0MB in the beginning and 280.8MB in the end (delta: -206.8MB). Peak memory consumption was 410.4MB. Max. memory is 16.1GB. [2022-11-03 02:34:19,290 INFO L158 Benchmark]: TraceAbstraction took 292809.40ms. Allocated memory is still 725.6MB. Free memory was 279.7MB in the beginning and 409.8MB in the end (delta: -130.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:34:19,290 INFO L158 Benchmark]: Witness Printer took 8.54ms. Allocated memory is still 725.6MB. Free memory is still 409.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:34:19,293 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 96.5MB. Free memory is still 75.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 746.59ms. Allocated memory was 96.5MB in the beginning and 117.4MB in the end (delta: 21.0MB). Free memory was 56.8MB in the beginning and 66.8MB in the end (delta: -10.0MB). Peak memory consumption was 10.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 230.90ms. Allocated memory is still 117.4MB. Free memory was 66.8MB in the beginning and 82.5MB in the end (delta: -15.7MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 199.29ms. Allocated memory is still 117.4MB. Free memory was 82.5MB in the beginning and 74.0MB in the end (delta: 8.5MB). Peak memory consumption was 13.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8761.88ms. Allocated memory was 117.4MB in the beginning and 725.6MB in the end (delta: 608.2MB). Free memory was 74.0MB in the beginning and 280.8MB in the end (delta: -206.8MB). Peak memory consumption was 410.4MB. Max. memory is 16.1GB. * TraceAbstraction took 292809.40ms. Allocated memory is still 725.6MB. Free memory was 279.7MB in the beginning and 409.8MB in the end (delta: -130.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 8.54ms. Allocated memory is still 725.6MB. Free memory is still 409.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 119, overapproximation of bitwiseAnd at line 99, overapproximation of bitwiseComplement at line 110, overapproximation of bitwiseXOr at line 160. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L29] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L31] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L32] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L34] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L35] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L37] const SORT_2 var_5 = 0; [L38] const SORT_1 var_22 = 0; [L39] const SORT_4 var_34 = 0; [L40] const SORT_3 var_35 = 0; [L41] const SORT_4 var_37 = 2; [L42] const SORT_4 var_42 = 1; [L43] const SORT_2 var_49 = 0; [L44] const SORT_2 var_51 = 1; [L45] const SORT_2 var_54 = 2; [L46] const SORT_4 var_56 = 3; [L47] const SORT_2 var_58 = 3; [L48] const SORT_4 var_60 = 4; [L49] const SORT_2 var_62 = 4; [L50] const SORT_2 var_64 = 5; [L51] const SORT_4 var_200 = 5; [L53] SORT_1 input_33; [L54] SORT_1 input_72; [L55] SORT_1 input_89; [L56] SORT_1 input_104; [L57] SORT_1 input_237; [L59] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L60] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L61] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L62] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L63] SORT_2 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L64] SORT_2 state_16 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L65] SORT_2 state_18 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L66] SORT_2 state_20 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L67] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L68] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L69] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L70] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L72] SORT_2 init_7_arg_1 = var_5; [L73] state_6 = init_7_arg_1 [L74] SORT_2 init_9_arg_1 = var_5; [L75] state_8 = init_9_arg_1 [L76] SORT_2 init_11_arg_1 = var_5; [L77] state_10 = init_11_arg_1 [L78] SORT_2 init_13_arg_1 = var_5; [L79] state_12 = init_13_arg_1 [L80] SORT_2 init_15_arg_1 = var_5; [L81] state_14 = init_15_arg_1 [L82] SORT_2 init_17_arg_1 = var_5; [L83] state_16 = init_17_arg_1 [L84] SORT_2 init_19_arg_1 = var_5; [L85] state_18 = init_19_arg_1 [L86] SORT_2 init_21_arg_1 = var_5; [L87] state_20 = init_21_arg_1 [L88] SORT_1 init_24_arg_1 = var_22; [L89] state_23 = init_24_arg_1 [L90] SORT_1 init_26_arg_1 = var_22; [L91] state_25 = init_26_arg_1 [L92] SORT_1 init_28_arg_1 = var_22; [L93] state_27 = init_28_arg_1 [L94] SORT_1 init_30_arg_1 = var_22; [L95] state_29 = init_30_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_14=0, state_16=0, state_18=0, state_20=0, state_23=0, state_25=0, state_27=0, state_29=0, state_6=0, state_8=0, var_200=5, var_22=0, var_34=0, var_35=0, var_37=2, var_42=1, var_49=0, var_5=0, var_51=1, var_54=2, var_56=3, var_58=3, var_60=4, var_62=4, var_64=5] [L98] input_33 = __VERIFIER_nondet_uchar() [L99] input_33 = input_33 & mask_SORT_1 [L100] input_72 = __VERIFIER_nondet_uchar() [L101] input_72 = input_72 & mask_SORT_1 [L102] input_89 = __VERIFIER_nondet_uchar() [L103] input_89 = input_89 & mask_SORT_1 [L104] input_104 = __VERIFIER_nondet_uchar() [L105] input_104 = input_104 & mask_SORT_1 [L106] input_237 = __VERIFIER_nondet_uchar() [L109] SORT_1 var_31_arg_0 = state_27; [L110] SORT_1 var_31_arg_1 = ~state_29; [L111] var_31_arg_1 = var_31_arg_1 & mask_SORT_1 [L112] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L113] var_31 = var_31 & mask_SORT_1 [L114] SORT_1 bad_32_arg_0 = var_31; [L115] CALL __VERIFIER_assert(!(bad_32_arg_0)) [L20] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L115] RET __VERIFIER_assert(!(bad_32_arg_0)) [L117] SORT_3 var_36_arg_0 = var_35; [L118] SORT_2 var_36_arg_1 = state_18; [L119] SORT_4 var_36 = ((SORT_4)var_36_arg_0 << 8) | var_36_arg_1; [L120] var_36 = var_36 & mask_SORT_4 [L121] SORT_3 var_38_arg_0 = var_35; [L122] SORT_2 var_38_arg_1 = state_20; [L123] SORT_4 var_38 = ((SORT_4)var_38_arg_0 << 8) | var_38_arg_1; [L124] var_38 = var_38 & mask_SORT_4 [L125] SORT_4 var_39_arg_0 = var_37; [L126] SORT_4 var_39_arg_1 = var_38; [L127] SORT_4 var_39 = var_39_arg_0 * var_39_arg_1; [L128] SORT_4 var_40_arg_0 = var_36; [L129] SORT_4 var_40_arg_1 = var_39; [L130] SORT_4 var_40 = var_40_arg_0 + var_40_arg_1; [L131] var_40 = var_40 & mask_SORT_4 [L132] SORT_4 var_41_arg_0 = var_34; [L133] SORT_4 var_41_arg_1 = var_40; [L134] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L135] SORT_4 var_43_arg_0 = var_42; [L136] SORT_4 var_43_arg_1 = var_38; [L137] SORT_4 var_43 = var_43_arg_0 + var_43_arg_1; [L138] SORT_4 var_44_arg_0 = var_37; [L139] SORT_4 var_44_arg_1 = var_43; [L140] SORT_4 var_44 = var_44_arg_0 * var_44_arg_1; [L141] SORT_4 var_45_arg_0 = var_36; [L142] SORT_4 var_45_arg_1 = var_44; [L143] SORT_4 var_45 = var_45_arg_0 + var_45_arg_1; [L144] var_45 = var_45 & mask_SORT_4 [L145] SORT_4 var_46_arg_0 = var_34; [L146] SORT_4 var_46_arg_1 = var_45; [L147] SORT_1 var_46 = var_46_arg_0 == var_46_arg_1; [L148] SORT_1 var_47_arg_0 = var_41; [L149] SORT_1 var_47_arg_1 = var_46; [L150] SORT_1 var_47 = var_47_arg_0 | var_47_arg_1; [L151] SORT_1 var_48_arg_0 = input_33; [L152] SORT_1 var_48_arg_1 = var_47; [L153] SORT_1 var_48 = var_48_arg_0 & var_48_arg_1; [L154] var_48 = var_48 & mask_SORT_1 [L155] SORT_4 var_50_arg_0 = var_42; [L156] SORT_4 var_50_arg_1 = var_45; [L157] SORT_1 var_50 = var_50_arg_0 == var_50_arg_1; [L158] SORT_2 var_52_arg_0 = var_51; [L159] SORT_2 var_52_arg_1 = state_8; [L160] SORT_2 var_52 = var_52_arg_0 ^ var_52_arg_1; [L161] var_52 = var_52 & mask_SORT_2 [L162] SORT_4 var_53_arg_0 = var_37; [L163] SORT_4 var_53_arg_1 = var_45; [L164] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L165] SORT_2 var_55_arg_0 = var_54; [L166] SORT_2 var_55_arg_1 = state_10; [L167] SORT_2 var_55 = var_55_arg_0 ^ var_55_arg_1; [L168] var_55 = var_55 & mask_SORT_2 [L169] SORT_4 var_57_arg_0 = var_56; [L170] SORT_4 var_57_arg_1 = var_45; [L171] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L172] SORT_2 var_59_arg_0 = var_58; [L173] SORT_2 var_59_arg_1 = state_12; [L174] SORT_2 var_59 = var_59_arg_0 ^ var_59_arg_1; [L175] var_59 = var_59 & mask_SORT_2 [L176] SORT_4 var_61_arg_0 = var_60; [L177] SORT_4 var_61_arg_1 = var_45; [L178] SORT_1 var_61 = var_61_arg_0 == var_61_arg_1; [L179] SORT_2 var_63_arg_0 = var_62; [L180] SORT_2 var_63_arg_1 = state_14; [L181] SORT_2 var_63 = var_63_arg_0 ^ var_63_arg_1; [L182] var_63 = var_63 & mask_SORT_2 [L183] SORT_2 var_65_arg_0 = var_64; [L184] SORT_2 var_65_arg_1 = state_16; [L185] SORT_2 var_65 = var_65_arg_0 ^ var_65_arg_1; [L186] var_65 = var_65 & mask_SORT_2 [L187] SORT_1 var_66_arg_0 = var_61; [L188] SORT_2 var_66_arg_1 = var_63; [L189] SORT_2 var_66_arg_2 = var_65; [L190] EXPR var_66_arg_0 ? var_66_arg_1 : var_66_arg_2 [L190] SORT_2 var_66 = var_66_arg_0 ? var_66_arg_1 : var_66_arg_2; [L191] SORT_1 var_67_arg_0 = var_57; [L192] SORT_2 var_67_arg_1 = var_59; [L193] SORT_2 var_67_arg_2 = var_66; [L194] EXPR var_67_arg_0 ? var_67_arg_1 : var_67_arg_2 [L194] SORT_2 var_67 = var_67_arg_0 ? var_67_arg_1 : var_67_arg_2; [L195] SORT_1 var_68_arg_0 = var_53; [L196] SORT_2 var_68_arg_1 = var_55; [L197] SORT_2 var_68_arg_2 = var_67; [L198] EXPR var_68_arg_0 ? var_68_arg_1 : var_68_arg_2 [L198] SORT_2 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L199] SORT_1 var_69_arg_0 = var_50; [L200] SORT_2 var_69_arg_1 = var_52; [L201] SORT_2 var_69_arg_2 = var_68; [L202] EXPR var_69_arg_0 ? var_69_arg_1 : var_69_arg_2 [L202] SORT_2 var_69 = var_69_arg_0 ? var_69_arg_1 : var_69_arg_2; [L203] SORT_1 var_70_arg_0 = var_46; [L204] SORT_2 var_70_arg_1 = state_6; [L205] SORT_2 var_70_arg_2 = var_69; [L206] EXPR var_70_arg_0 ? var_70_arg_1 : var_70_arg_2 [L206] SORT_2 var_70 = var_70_arg_0 ? var_70_arg_1 : var_70_arg_2; [L207] SORT_1 var_71_arg_0 = var_46; [L208] SORT_2 var_71_arg_1 = var_49; [L209] SORT_2 var_71_arg_2 = var_70; [L210] EXPR var_71_arg_0 ? var_71_arg_1 : var_71_arg_2 [L210] SORT_2 var_71 = var_71_arg_0 ? var_71_arg_1 : var_71_arg_2; [L211] SORT_4 var_73_arg_0 = var_38; [L212] SORT_4 var_73_arg_1 = var_42; [L213] SORT_4 var_73 = var_73_arg_0 - var_73_arg_1; [L214] SORT_4 var_74_arg_0 = var_37; [L215] SORT_4 var_74_arg_1 = var_73; [L216] SORT_4 var_74 = var_74_arg_0 * var_74_arg_1; [L217] SORT_4 var_75_arg_0 = var_36; [L218] SORT_4 var_75_arg_1 = var_74; [L219] SORT_4 var_75 = var_75_arg_0 + var_75_arg_1; [L220] var_75 = var_75 & mask_SORT_4 [L221] SORT_4 var_76_arg_0 = var_34; [L222] SORT_4 var_76_arg_1 = var_75; [L223] SORT_1 var_76 = var_76_arg_0 == var_76_arg_1; [L224] SORT_1 var_77_arg_0 = var_41; [L225] SORT_1 var_77_arg_1 = var_76; [L226] SORT_1 var_77 = var_77_arg_0 | var_77_arg_1; [L227] SORT_1 var_78_arg_0 = input_72; [L228] SORT_1 var_78_arg_1 = var_77; [L229] SORT_1 var_78 = var_78_arg_0 & var_78_arg_1; [L230] var_78 = var_78 & mask_SORT_1 [L231] SORT_4 var_79_arg_0 = var_42; [L232] SORT_4 var_79_arg_1 = var_75; [L233] SORT_1 var_79 = var_79_arg_0 == var_79_arg_1; [L234] SORT_4 var_80_arg_0 = var_37; [L235] SORT_4 var_80_arg_1 = var_75; [L236] SORT_1 var_80 = var_80_arg_0 == var_80_arg_1; [L237] SORT_4 var_81_arg_0 = var_56; [L238] SORT_4 var_81_arg_1 = var_75; [L239] SORT_1 var_81 = var_81_arg_0 == var_81_arg_1; [L240] SORT_4 var_82_arg_0 = var_60; [L241] SORT_4 var_82_arg_1 = var_75; [L242] SORT_1 var_82 = var_82_arg_0 == var_82_arg_1; [L243] SORT_1 var_83_arg_0 = var_82; [L244] SORT_2 var_83_arg_1 = var_63; [L245] SORT_2 var_83_arg_2 = var_65; [L246] EXPR var_83_arg_0 ? var_83_arg_1 : var_83_arg_2 [L246] SORT_2 var_83 = var_83_arg_0 ? var_83_arg_1 : var_83_arg_2; [L247] SORT_1 var_84_arg_0 = var_81; [L248] SORT_2 var_84_arg_1 = var_59; [L249] SORT_2 var_84_arg_2 = var_83; [L250] EXPR var_84_arg_0 ? var_84_arg_1 : var_84_arg_2 [L250] SORT_2 var_84 = var_84_arg_0 ? var_84_arg_1 : var_84_arg_2; [L251] SORT_1 var_85_arg_0 = var_80; [L252] SORT_2 var_85_arg_1 = var_55; [L253] SORT_2 var_85_arg_2 = var_84; [L254] EXPR var_85_arg_0 ? var_85_arg_1 : var_85_arg_2 [L254] SORT_2 var_85 = var_85_arg_0 ? var_85_arg_1 : var_85_arg_2; [L255] SORT_1 var_86_arg_0 = var_79; [L256] SORT_2 var_86_arg_1 = var_52; [L257] SORT_2 var_86_arg_2 = var_85; [L258] EXPR var_86_arg_0 ? var_86_arg_1 : var_86_arg_2 [L258] SORT_2 var_86 = var_86_arg_0 ? var_86_arg_1 : var_86_arg_2; [L259] SORT_1 var_87_arg_0 = var_76; [L260] SORT_2 var_87_arg_1 = state_6; [L261] SORT_2 var_87_arg_2 = var_86; [L262] EXPR var_87_arg_0 ? var_87_arg_1 : var_87_arg_2 [L262] SORT_2 var_87 = var_87_arg_0 ? var_87_arg_1 : var_87_arg_2; [L263] SORT_1 var_88_arg_0 = var_76; [L264] SORT_2 var_88_arg_1 = var_49; [L265] SORT_2 var_88_arg_2 = var_87; [L266] EXPR var_88_arg_0 ? var_88_arg_1 : var_88_arg_2 [L266] SORT_2 var_88 = var_88_arg_0 ? var_88_arg_1 : var_88_arg_2; [L267] SORT_4 var_90_arg_0 = var_42; [L268] SORT_4 var_90_arg_1 = var_40; [L269] SORT_4 var_90 = var_90_arg_0 + var_90_arg_1; [L270] var_90 = var_90 & mask_SORT_4 [L271] SORT_4 var_91_arg_0 = var_34; [L272] SORT_4 var_91_arg_1 = var_90; [L273] SORT_1 var_91 = var_91_arg_0 == var_91_arg_1; [L274] SORT_1 var_92_arg_0 = var_41; [L275] SORT_1 var_92_arg_1 = var_91; [L276] SORT_1 var_92 = var_92_arg_0 | var_92_arg_1; [L277] SORT_1 var_93_arg_0 = input_89; [L278] SORT_1 var_93_arg_1 = var_92; [L279] SORT_1 var_93 = var_93_arg_0 & var_93_arg_1; [L280] var_93 = var_93 & mask_SORT_1 [L281] SORT_4 var_94_arg_0 = var_42; [L282] SORT_4 var_94_arg_1 = var_90; [L283] SORT_1 var_94 = var_94_arg_0 == var_94_arg_1; [L284] SORT_4 var_95_arg_0 = var_37; [L285] SORT_4 var_95_arg_1 = var_90; [L286] SORT_1 var_95 = var_95_arg_0 == var_95_arg_1; [L287] SORT_4 var_96_arg_0 = var_56; [L288] SORT_4 var_96_arg_1 = var_90; [L289] SORT_1 var_96 = var_96_arg_0 == var_96_arg_1; [L290] SORT_4 var_97_arg_0 = var_60; [L291] SORT_4 var_97_arg_1 = var_90; [L292] SORT_1 var_97 = var_97_arg_0 == var_97_arg_1; [L293] SORT_1 var_98_arg_0 = var_97; [L294] SORT_2 var_98_arg_1 = var_63; [L295] SORT_2 var_98_arg_2 = var_65; [L296] EXPR var_98_arg_0 ? var_98_arg_1 : var_98_arg_2 [L296] SORT_2 var_98 = var_98_arg_0 ? var_98_arg_1 : var_98_arg_2; [L297] SORT_1 var_99_arg_0 = var_96; [L298] SORT_2 var_99_arg_1 = var_59; [L299] SORT_2 var_99_arg_2 = var_98; [L300] EXPR var_99_arg_0 ? var_99_arg_1 : var_99_arg_2 [L300] SORT_2 var_99 = var_99_arg_0 ? var_99_arg_1 : var_99_arg_2; [L301] SORT_1 var_100_arg_0 = var_95; [L302] SORT_2 var_100_arg_1 = var_55; [L303] SORT_2 var_100_arg_2 = var_99; [L304] EXPR var_100_arg_0 ? var_100_arg_1 : var_100_arg_2 [L304] SORT_2 var_100 = var_100_arg_0 ? var_100_arg_1 : var_100_arg_2; [L305] SORT_1 var_101_arg_0 = var_94; [L306] SORT_2 var_101_arg_1 = var_52; [L307] SORT_2 var_101_arg_2 = var_100; [L308] EXPR var_101_arg_0 ? var_101_arg_1 : var_101_arg_2 [L308] SORT_2 var_101 = var_101_arg_0 ? var_101_arg_1 : var_101_arg_2; [L309] SORT_1 var_102_arg_0 = var_91; [L310] SORT_2 var_102_arg_1 = state_6; [L311] SORT_2 var_102_arg_2 = var_101; [L312] EXPR var_102_arg_0 ? var_102_arg_1 : var_102_arg_2 [L312] SORT_2 var_102 = var_102_arg_0 ? var_102_arg_1 : var_102_arg_2; [L313] SORT_1 var_103_arg_0 = var_91; [L314] SORT_2 var_103_arg_1 = var_49; [L315] SORT_2 var_103_arg_2 = var_102; [L316] EXPR var_103_arg_0 ? var_103_arg_1 : var_103_arg_2 [L316] SORT_2 var_103 = var_103_arg_0 ? var_103_arg_1 : var_103_arg_2; [L317] SORT_4 var_105_arg_0 = var_40; [L318] SORT_4 var_105_arg_1 = var_42; [L319] SORT_4 var_105 = var_105_arg_0 - var_105_arg_1; [L320] var_105 = var_105 & mask_SORT_4 [L321] SORT_4 var_106_arg_0 = var_34; [L322] SORT_4 var_106_arg_1 = var_105; [L323] SORT_1 var_106 = var_106_arg_0 == var_106_arg_1; [L324] SORT_1 var_107_arg_0 = var_106; [L325] SORT_1 var_107_arg_1 = var_41; [L326] SORT_1 var_107 = var_107_arg_0 | var_107_arg_1; [L327] SORT_1 var_108_arg_0 = input_104; [L328] SORT_1 var_108_arg_1 = var_107; [L329] SORT_1 var_108 = var_108_arg_0 & var_108_arg_1; [L330] var_108 = var_108 & mask_SORT_1 [L331] SORT_4 var_109_arg_0 = var_42; [L332] SORT_4 var_109_arg_1 = var_105; [L333] SORT_1 var_109 = var_109_arg_0 == var_109_arg_1; [L334] SORT_4 var_110_arg_0 = var_37; [L335] SORT_4 var_110_arg_1 = var_105; [L336] SORT_1 var_110 = var_110_arg_0 == var_110_arg_1; [L337] SORT_4 var_111_arg_0 = var_56; [L338] SORT_4 var_111_arg_1 = var_105; [L339] SORT_1 var_111 = var_111_arg_0 == var_111_arg_1; [L340] SORT_4 var_112_arg_0 = var_60; [L341] SORT_4 var_112_arg_1 = var_105; [L342] SORT_1 var_112 = var_112_arg_0 == var_112_arg_1; [L343] SORT_1 var_113_arg_0 = var_112; [L344] SORT_2 var_113_arg_1 = var_63; [L345] SORT_2 var_113_arg_2 = var_65; [L346] EXPR var_113_arg_0 ? var_113_arg_1 : var_113_arg_2 [L346] SORT_2 var_113 = var_113_arg_0 ? var_113_arg_1 : var_113_arg_2; [L347] SORT_1 var_114_arg_0 = var_111; [L348] SORT_2 var_114_arg_1 = var_59; [L349] SORT_2 var_114_arg_2 = var_113; [L350] EXPR var_114_arg_0 ? var_114_arg_1 : var_114_arg_2 [L350] SORT_2 var_114 = var_114_arg_0 ? var_114_arg_1 : var_114_arg_2; [L351] SORT_1 var_115_arg_0 = var_110; [L352] SORT_2 var_115_arg_1 = var_55; [L353] SORT_2 var_115_arg_2 = var_114; [L354] EXPR var_115_arg_0 ? var_115_arg_1 : var_115_arg_2 [L354] SORT_2 var_115 = var_115_arg_0 ? var_115_arg_1 : var_115_arg_2; [L355] SORT_1 var_116_arg_0 = var_109; [L356] SORT_2 var_116_arg_1 = var_52; [L357] SORT_2 var_116_arg_2 = var_115; [L358] EXPR var_116_arg_0 ? var_116_arg_1 : var_116_arg_2 [L358] SORT_2 var_116 = var_116_arg_0 ? var_116_arg_1 : var_116_arg_2; [L359] SORT_1 var_117_arg_0 = var_106; [L360] SORT_2 var_117_arg_1 = state_6; [L361] SORT_2 var_117_arg_2 = var_116; [L362] EXPR var_117_arg_0 ? var_117_arg_1 : var_117_arg_2 [L362] SORT_2 var_117 = var_117_arg_0 ? var_117_arg_1 : var_117_arg_2; [L363] SORT_1 var_118_arg_0 = var_106; [L364] SORT_2 var_118_arg_1 = var_49; [L365] SORT_2 var_118_arg_2 = var_117; [L366] EXPR var_118_arg_0 ? var_118_arg_1 : var_118_arg_2 [L366] SORT_2 var_118 = var_118_arg_0 ? var_118_arg_1 : var_118_arg_2; [L367] SORT_1 var_119_arg_0 = var_108; [L368] SORT_2 var_119_arg_1 = var_118; [L369] SORT_2 var_119_arg_2 = state_6; [L370] EXPR var_119_arg_0 ? var_119_arg_1 : var_119_arg_2 [L370] SORT_2 var_119 = var_119_arg_0 ? var_119_arg_1 : var_119_arg_2; [L371] SORT_1 var_120_arg_0 = var_93; [L372] SORT_2 var_120_arg_1 = var_103; [L373] SORT_2 var_120_arg_2 = var_119; [L374] EXPR var_120_arg_0 ? var_120_arg_1 : var_120_arg_2 [L374] SORT_2 var_120 = var_120_arg_0 ? var_120_arg_1 : var_120_arg_2; [L375] SORT_1 var_121_arg_0 = var_78; [L376] SORT_2 var_121_arg_1 = var_88; [L377] SORT_2 var_121_arg_2 = var_120; [L378] EXPR var_121_arg_0 ? var_121_arg_1 : var_121_arg_2 [L378] SORT_2 var_121 = var_121_arg_0 ? var_121_arg_1 : var_121_arg_2; [L379] SORT_1 var_122_arg_0 = var_48; [L380] SORT_2 var_122_arg_1 = var_71; [L381] SORT_2 var_122_arg_2 = var_121; [L382] EXPR var_122_arg_0 ? var_122_arg_1 : var_122_arg_2 [L382] SORT_2 var_122 = var_122_arg_0 ? var_122_arg_1 : var_122_arg_2; [L383] var_122 = var_122 & mask_SORT_2 [L384] SORT_2 next_123_arg_1 = var_122; [L385] SORT_4 var_124_arg_0 = var_42; [L386] SORT_4 var_124_arg_1 = var_40; [L387] SORT_1 var_124 = var_124_arg_0 == var_124_arg_1; [L388] SORT_1 var_125_arg_0 = var_124; [L389] SORT_1 var_125_arg_1 = var_50; [L390] SORT_1 var_125 = var_125_arg_0 | var_125_arg_1; [L391] SORT_1 var_126_arg_0 = input_33; [L392] SORT_1 var_126_arg_1 = var_125; [L393] SORT_1 var_126 = var_126_arg_0 & var_126_arg_1; [L394] var_126 = var_126 & mask_SORT_1 [L395] SORT_1 var_127_arg_0 = var_50; [L396] SORT_2 var_127_arg_1 = var_49; [L397] SORT_2 var_127_arg_2 = var_70; [L398] EXPR var_127_arg_0 ? var_127_arg_1 : var_127_arg_2 [L398] SORT_2 var_127 = var_127_arg_0 ? var_127_arg_1 : var_127_arg_2; [L399] SORT_1 var_128_arg_0 = var_124; [L400] SORT_1 var_128_arg_1 = var_79; [L401] SORT_1 var_128 = var_128_arg_0 | var_128_arg_1; [L402] SORT_1 var_129_arg_0 = input_72; [L403] SORT_1 var_129_arg_1 = var_128; [L404] SORT_1 var_129 = var_129_arg_0 & var_129_arg_1; [L405] var_129 = var_129 & mask_SORT_1 [L406] SORT_1 var_130_arg_0 = var_79; [L407] SORT_2 var_130_arg_1 = var_49; [L408] SORT_2 var_130_arg_2 = var_87; [L409] EXPR var_130_arg_0 ? var_130_arg_1 : var_130_arg_2 [L409] SORT_2 var_130 = var_130_arg_0 ? var_130_arg_1 : var_130_arg_2; [L410] SORT_1 var_131_arg_0 = var_124; [L411] SORT_1 var_131_arg_1 = var_94; [L412] SORT_1 var_131 = var_131_arg_0 | var_131_arg_1; [L413] SORT_1 var_132_arg_0 = input_89; [L414] SORT_1 var_132_arg_1 = var_131; [L415] SORT_1 var_132 = var_132_arg_0 & var_132_arg_1; [L416] var_132 = var_132 & mask_SORT_1 [L417] SORT_1 var_133_arg_0 = var_94; [L418] SORT_2 var_133_arg_1 = var_49; [L419] SORT_2 var_133_arg_2 = var_102; [L420] EXPR var_133_arg_0 ? var_133_arg_1 : var_133_arg_2 [L420] SORT_2 var_133 = var_133_arg_0 ? var_133_arg_1 : var_133_arg_2; [L421] SORT_1 var_134_arg_0 = var_109; [L422] SORT_1 var_134_arg_1 = var_124; [L423] SORT_1 var_134 = var_134_arg_0 | var_134_arg_1; [L424] SORT_1 var_135_arg_0 = input_104; [L425] SORT_1 var_135_arg_1 = var_134; [L426] SORT_1 var_135 = var_135_arg_0 & var_135_arg_1; [L427] var_135 = var_135 & mask_SORT_1 [L428] SORT_1 var_136_arg_0 = var_109; [L429] SORT_2 var_136_arg_1 = var_49; [L430] SORT_2 var_136_arg_2 = var_117; [L431] EXPR var_136_arg_0 ? var_136_arg_1 : var_136_arg_2 [L431] SORT_2 var_136 = var_136_arg_0 ? var_136_arg_1 : var_136_arg_2; [L432] SORT_1 var_137_arg_0 = var_135; [L433] SORT_2 var_137_arg_1 = var_136; [L434] SORT_2 var_137_arg_2 = var_52; [L435] EXPR var_137_arg_0 ? var_137_arg_1 : var_137_arg_2 [L435] SORT_2 var_137 = var_137_arg_0 ? var_137_arg_1 : var_137_arg_2; [L436] SORT_1 var_138_arg_0 = var_132; [L437] SORT_2 var_138_arg_1 = var_133; [L438] SORT_2 var_138_arg_2 = var_137; [L439] EXPR var_138_arg_0 ? var_138_arg_1 : var_138_arg_2 [L439] SORT_2 var_138 = var_138_arg_0 ? var_138_arg_1 : var_138_arg_2; [L440] SORT_1 var_139_arg_0 = var_129; [L441] SORT_2 var_139_arg_1 = var_130; [L442] SORT_2 var_139_arg_2 = var_138; [L443] EXPR var_139_arg_0 ? var_139_arg_1 : var_139_arg_2 [L443] SORT_2 var_139 = var_139_arg_0 ? var_139_arg_1 : var_139_arg_2; [L444] SORT_1 var_140_arg_0 = var_126; [L445] SORT_2 var_140_arg_1 = var_127; [L446] SORT_2 var_140_arg_2 = var_139; [L447] EXPR var_140_arg_0 ? var_140_arg_1 : var_140_arg_2 [L447] SORT_2 var_140 = var_140_arg_0 ? var_140_arg_1 : var_140_arg_2; [L448] SORT_2 var_141_arg_0 = var_51; [L449] SORT_2 var_141_arg_1 = var_140; [L450] SORT_2 var_141 = var_141_arg_0 ^ var_141_arg_1; [L451] SORT_2 next_142_arg_1 = var_141; [L452] SORT_4 var_143_arg_0 = var_37; [L453] SORT_4 var_143_arg_1 = var_40; [L454] SORT_1 var_143 = var_143_arg_0 == var_143_arg_1; [L455] SORT_1 var_144_arg_0 = var_143; [L456] SORT_1 var_144_arg_1 = var_53; [L457] SORT_1 var_144 = var_144_arg_0 | var_144_arg_1; [L458] SORT_1 var_145_arg_0 = input_33; [L459] SORT_1 var_145_arg_1 = var_144; [L460] SORT_1 var_145 = var_145_arg_0 & var_145_arg_1; [L461] var_145 = var_145 & mask_SORT_1 [L462] SORT_1 var_146_arg_0 = var_53; [L463] SORT_2 var_146_arg_1 = var_49; [L464] SORT_2 var_146_arg_2 = var_70; [L465] EXPR var_146_arg_0 ? var_146_arg_1 : var_146_arg_2 [L465] SORT_2 var_146 = var_146_arg_0 ? var_146_arg_1 : var_146_arg_2; [L466] SORT_1 var_147_arg_0 = var_143; [L467] SORT_1 var_147_arg_1 = var_80; [L468] SORT_1 var_147 = var_147_arg_0 | var_147_arg_1; [L469] SORT_1 var_148_arg_0 = input_72; [L470] SORT_1 var_148_arg_1 = var_147; [L471] SORT_1 var_148 = var_148_arg_0 & var_148_arg_1; [L472] var_148 = var_148 & mask_SORT_1 [L473] SORT_1 var_149_arg_0 = var_80; [L474] SORT_2 var_149_arg_1 = var_49; [L475] SORT_2 var_149_arg_2 = var_87; [L476] EXPR var_149_arg_0 ? var_149_arg_1 : var_149_arg_2 [L476] SORT_2 var_149 = var_149_arg_0 ? var_149_arg_1 : var_149_arg_2; [L477] SORT_1 var_150_arg_0 = var_143; [L478] SORT_1 var_150_arg_1 = var_95; [L479] SORT_1 var_150 = var_150_arg_0 | var_150_arg_1; [L480] SORT_1 var_151_arg_0 = input_89; [L481] SORT_1 var_151_arg_1 = var_150; [L482] SORT_1 var_151 = var_151_arg_0 & var_151_arg_1; [L483] var_151 = var_151 & mask_SORT_1 [L484] SORT_1 var_152_arg_0 = var_95; [L485] SORT_2 var_152_arg_1 = var_49; [L486] SORT_2 var_152_arg_2 = var_102; [L487] EXPR var_152_arg_0 ? var_152_arg_1 : var_152_arg_2 [L487] SORT_2 var_152 = var_152_arg_0 ? var_152_arg_1 : var_152_arg_2; [L488] SORT_1 var_153_arg_0 = var_110; [L489] SORT_1 var_153_arg_1 = var_143; [L490] SORT_1 var_153 = var_153_arg_0 | var_153_arg_1; [L491] SORT_1 var_154_arg_0 = input_104; [L492] SORT_1 var_154_arg_1 = var_153; [L493] SORT_1 var_154 = var_154_arg_0 & var_154_arg_1; [L494] var_154 = var_154 & mask_SORT_1 [L495] SORT_1 var_155_arg_0 = var_110; [L496] SORT_2 var_155_arg_1 = var_49; [L497] SORT_2 var_155_arg_2 = var_117; [L498] EXPR var_155_arg_0 ? var_155_arg_1 : var_155_arg_2 [L498] SORT_2 var_155 = var_155_arg_0 ? var_155_arg_1 : var_155_arg_2; [L499] SORT_1 var_156_arg_0 = var_154; [L500] SORT_2 var_156_arg_1 = var_155; [L501] SORT_2 var_156_arg_2 = var_55; [L502] EXPR var_156_arg_0 ? var_156_arg_1 : var_156_arg_2 [L502] SORT_2 var_156 = var_156_arg_0 ? var_156_arg_1 : var_156_arg_2; [L503] SORT_1 var_157_arg_0 = var_151; [L504] SORT_2 var_157_arg_1 = var_152; [L505] SORT_2 var_157_arg_2 = var_156; [L506] EXPR var_157_arg_0 ? var_157_arg_1 : var_157_arg_2 [L506] SORT_2 var_157 = var_157_arg_0 ? var_157_arg_1 : var_157_arg_2; [L507] SORT_1 var_158_arg_0 = var_148; [L508] SORT_2 var_158_arg_1 = var_149; [L509] SORT_2 var_158_arg_2 = var_157; [L510] EXPR var_158_arg_0 ? var_158_arg_1 : var_158_arg_2 [L510] SORT_2 var_158 = var_158_arg_0 ? var_158_arg_1 : var_158_arg_2; [L511] SORT_1 var_159_arg_0 = var_145; [L512] SORT_2 var_159_arg_1 = var_146; [L513] SORT_2 var_159_arg_2 = var_158; [L514] EXPR var_159_arg_0 ? var_159_arg_1 : var_159_arg_2 [L514] SORT_2 var_159 = var_159_arg_0 ? var_159_arg_1 : var_159_arg_2; [L515] SORT_2 var_160_arg_0 = var_54; [L516] SORT_2 var_160_arg_1 = var_159; [L517] SORT_2 var_160 = var_160_arg_0 ^ var_160_arg_1; [L518] SORT_2 next_161_arg_1 = var_160; [L519] SORT_4 var_162_arg_0 = var_56; [L520] SORT_4 var_162_arg_1 = var_40; [L521] SORT_1 var_162 = var_162_arg_0 == var_162_arg_1; [L522] SORT_1 var_163_arg_0 = var_162; [L523] SORT_1 var_163_arg_1 = var_57; [L524] SORT_1 var_163 = var_163_arg_0 | var_163_arg_1; [L525] SORT_1 var_164_arg_0 = input_33; [L526] SORT_1 var_164_arg_1 = var_163; [L527] SORT_1 var_164 = var_164_arg_0 & var_164_arg_1; [L528] var_164 = var_164 & mask_SORT_1 [L529] SORT_1 var_165_arg_0 = var_57; [L530] SORT_2 var_165_arg_1 = var_49; [L531] SORT_2 var_165_arg_2 = var_70; [L532] EXPR var_165_arg_0 ? var_165_arg_1 : var_165_arg_2 [L532] SORT_2 var_165 = var_165_arg_0 ? var_165_arg_1 : var_165_arg_2; [L533] SORT_1 var_166_arg_0 = var_162; [L534] SORT_1 var_166_arg_1 = var_81; [L535] SORT_1 var_166 = var_166_arg_0 | var_166_arg_1; [L536] SORT_1 var_167_arg_0 = input_72; [L537] SORT_1 var_167_arg_1 = var_166; [L538] SORT_1 var_167 = var_167_arg_0 & var_167_arg_1; [L539] var_167 = var_167 & mask_SORT_1 [L540] SORT_1 var_168_arg_0 = var_81; [L541] SORT_2 var_168_arg_1 = var_49; [L542] SORT_2 var_168_arg_2 = var_87; [L543] EXPR var_168_arg_0 ? var_168_arg_1 : var_168_arg_2 [L543] SORT_2 var_168 = var_168_arg_0 ? var_168_arg_1 : var_168_arg_2; [L544] SORT_1 var_169_arg_0 = var_162; [L545] SORT_1 var_169_arg_1 = var_96; [L546] SORT_1 var_169 = var_169_arg_0 | var_169_arg_1; [L547] SORT_1 var_170_arg_0 = input_89; [L548] SORT_1 var_170_arg_1 = var_169; [L549] SORT_1 var_170 = var_170_arg_0 & var_170_arg_1; [L550] var_170 = var_170 & mask_SORT_1 [L551] SORT_1 var_171_arg_0 = var_96; [L552] SORT_2 var_171_arg_1 = var_49; [L553] SORT_2 var_171_arg_2 = var_102; [L554] EXPR var_171_arg_0 ? var_171_arg_1 : var_171_arg_2 [L554] SORT_2 var_171 = var_171_arg_0 ? var_171_arg_1 : var_171_arg_2; [L555] SORT_1 var_172_arg_0 = var_111; [L556] SORT_1 var_172_arg_1 = var_162; [L557] SORT_1 var_172 = var_172_arg_0 | var_172_arg_1; [L558] SORT_1 var_173_arg_0 = input_104; [L559] SORT_1 var_173_arg_1 = var_172; [L560] SORT_1 var_173 = var_173_arg_0 & var_173_arg_1; [L561] var_173 = var_173 & mask_SORT_1 [L562] SORT_1 var_174_arg_0 = var_111; [L563] SORT_2 var_174_arg_1 = var_49; [L564] SORT_2 var_174_arg_2 = var_117; [L565] EXPR var_174_arg_0 ? var_174_arg_1 : var_174_arg_2 [L565] SORT_2 var_174 = var_174_arg_0 ? var_174_arg_1 : var_174_arg_2; [L566] SORT_1 var_175_arg_0 = var_173; [L567] SORT_2 var_175_arg_1 = var_174; [L568] SORT_2 var_175_arg_2 = var_59; [L569] EXPR var_175_arg_0 ? var_175_arg_1 : var_175_arg_2 [L569] SORT_2 var_175 = var_175_arg_0 ? var_175_arg_1 : var_175_arg_2; [L570] SORT_1 var_176_arg_0 = var_170; [L571] SORT_2 var_176_arg_1 = var_171; [L572] SORT_2 var_176_arg_2 = var_175; [L573] EXPR var_176_arg_0 ? var_176_arg_1 : var_176_arg_2 [L573] SORT_2 var_176 = var_176_arg_0 ? var_176_arg_1 : var_176_arg_2; [L574] SORT_1 var_177_arg_0 = var_167; [L575] SORT_2 var_177_arg_1 = var_168; [L576] SORT_2 var_177_arg_2 = var_176; [L577] EXPR var_177_arg_0 ? var_177_arg_1 : var_177_arg_2 [L577] SORT_2 var_177 = var_177_arg_0 ? var_177_arg_1 : var_177_arg_2; [L578] SORT_1 var_178_arg_0 = var_164; [L579] SORT_2 var_178_arg_1 = var_165; [L580] SORT_2 var_178_arg_2 = var_177; [L581] EXPR var_178_arg_0 ? var_178_arg_1 : var_178_arg_2 [L581] SORT_2 var_178 = var_178_arg_0 ? var_178_arg_1 : var_178_arg_2; [L582] SORT_2 var_179_arg_0 = var_58; [L583] SORT_2 var_179_arg_1 = var_178; [L584] SORT_2 var_179 = var_179_arg_0 ^ var_179_arg_1; [L585] SORT_2 next_180_arg_1 = var_179; [L586] SORT_4 var_181_arg_0 = var_60; [L587] SORT_4 var_181_arg_1 = var_40; [L588] SORT_1 var_181 = var_181_arg_0 == var_181_arg_1; [L589] SORT_1 var_182_arg_0 = var_181; [L590] SORT_1 var_182_arg_1 = var_61; [L591] SORT_1 var_182 = var_182_arg_0 | var_182_arg_1; [L592] SORT_1 var_183_arg_0 = input_33; [L593] SORT_1 var_183_arg_1 = var_182; [L594] SORT_1 var_183 = var_183_arg_0 & var_183_arg_1; [L595] var_183 = var_183 & mask_SORT_1 [L596] SORT_1 var_184_arg_0 = var_61; [L597] SORT_2 var_184_arg_1 = var_49; [L598] SORT_2 var_184_arg_2 = var_70; [L599] EXPR var_184_arg_0 ? var_184_arg_1 : var_184_arg_2 [L599] SORT_2 var_184 = var_184_arg_0 ? var_184_arg_1 : var_184_arg_2; [L600] SORT_1 var_185_arg_0 = var_181; [L601] SORT_1 var_185_arg_1 = var_82; [L602] SORT_1 var_185 = var_185_arg_0 | var_185_arg_1; [L603] SORT_1 var_186_arg_0 = input_72; [L604] SORT_1 var_186_arg_1 = var_185; [L605] SORT_1 var_186 = var_186_arg_0 & var_186_arg_1; [L606] var_186 = var_186 & mask_SORT_1 [L607] SORT_1 var_187_arg_0 = var_82; [L608] SORT_2 var_187_arg_1 = var_49; [L609] SORT_2 var_187_arg_2 = var_87; [L610] EXPR var_187_arg_0 ? var_187_arg_1 : var_187_arg_2 [L610] SORT_2 var_187 = var_187_arg_0 ? var_187_arg_1 : var_187_arg_2; [L611] SORT_1 var_188_arg_0 = var_181; [L612] SORT_1 var_188_arg_1 = var_97; [L613] SORT_1 var_188 = var_188_arg_0 | var_188_arg_1; [L614] SORT_1 var_189_arg_0 = input_89; [L615] SORT_1 var_189_arg_1 = var_188; [L616] SORT_1 var_189 = var_189_arg_0 & var_189_arg_1; [L617] var_189 = var_189 & mask_SORT_1 [L618] SORT_1 var_190_arg_0 = var_97; [L619] SORT_2 var_190_arg_1 = var_49; [L620] SORT_2 var_190_arg_2 = var_102; [L621] EXPR var_190_arg_0 ? var_190_arg_1 : var_190_arg_2 [L621] SORT_2 var_190 = var_190_arg_0 ? var_190_arg_1 : var_190_arg_2; [L622] SORT_1 var_191_arg_0 = var_112; [L623] SORT_1 var_191_arg_1 = var_181; [L624] SORT_1 var_191 = var_191_arg_0 | var_191_arg_1; [L625] SORT_1 var_192_arg_0 = input_104; [L626] SORT_1 var_192_arg_1 = var_191; [L627] SORT_1 var_192 = var_192_arg_0 & var_192_arg_1; [L628] var_192 = var_192 & mask_SORT_1 [L629] SORT_1 var_193_arg_0 = var_112; [L630] SORT_2 var_193_arg_1 = var_49; [L631] SORT_2 var_193_arg_2 = var_117; [L632] EXPR var_193_arg_0 ? var_193_arg_1 : var_193_arg_2 [L632] SORT_2 var_193 = var_193_arg_0 ? var_193_arg_1 : var_193_arg_2; [L633] SORT_1 var_194_arg_0 = var_192; [L634] SORT_2 var_194_arg_1 = var_193; [L635] SORT_2 var_194_arg_2 = var_63; [L636] EXPR var_194_arg_0 ? var_194_arg_1 : var_194_arg_2 [L636] SORT_2 var_194 = var_194_arg_0 ? var_194_arg_1 : var_194_arg_2; [L637] SORT_1 var_195_arg_0 = var_189; [L638] SORT_2 var_195_arg_1 = var_190; [L639] SORT_2 var_195_arg_2 = var_194; [L640] EXPR var_195_arg_0 ? var_195_arg_1 : var_195_arg_2 [L640] SORT_2 var_195 = var_195_arg_0 ? var_195_arg_1 : var_195_arg_2; [L641] SORT_1 var_196_arg_0 = var_186; [L642] SORT_2 var_196_arg_1 = var_187; [L643] SORT_2 var_196_arg_2 = var_195; [L644] EXPR var_196_arg_0 ? var_196_arg_1 : var_196_arg_2 [L644] SORT_2 var_196 = var_196_arg_0 ? var_196_arg_1 : var_196_arg_2; [L645] SORT_1 var_197_arg_0 = var_183; [L646] SORT_2 var_197_arg_1 = var_184; [L647] SORT_2 var_197_arg_2 = var_196; [L648] EXPR var_197_arg_0 ? var_197_arg_1 : var_197_arg_2 [L648] SORT_2 var_197 = var_197_arg_0 ? var_197_arg_1 : var_197_arg_2; [L649] SORT_2 var_198_arg_0 = var_62; [L650] SORT_2 var_198_arg_1 = var_197; [L651] SORT_2 var_198 = var_198_arg_0 ^ var_198_arg_1; [L652] SORT_2 next_199_arg_1 = var_198; [L653] SORT_4 var_201_arg_0 = var_200; [L654] SORT_4 var_201_arg_1 = var_40; [L655] SORT_1 var_201 = var_201_arg_0 == var_201_arg_1; [L656] SORT_4 var_202_arg_0 = var_200; [L657] SORT_4 var_202_arg_1 = var_45; [L658] SORT_1 var_202 = var_202_arg_0 == var_202_arg_1; [L659] SORT_1 var_203_arg_0 = var_201; [L660] SORT_1 var_203_arg_1 = var_202; [L661] SORT_1 var_203 = var_203_arg_0 | var_203_arg_1; [L662] SORT_1 var_204_arg_0 = input_33; [L663] SORT_1 var_204_arg_1 = var_203; [L664] SORT_1 var_204 = var_204_arg_0 & var_204_arg_1; [L665] var_204 = var_204 & mask_SORT_1 [L666] SORT_1 var_205_arg_0 = var_202; [L667] SORT_2 var_205_arg_1 = var_49; [L668] SORT_2 var_205_arg_2 = var_70; [L669] EXPR var_205_arg_0 ? var_205_arg_1 : var_205_arg_2 [L669] SORT_2 var_205 = var_205_arg_0 ? var_205_arg_1 : var_205_arg_2; [L670] SORT_4 var_206_arg_0 = var_200; [L671] SORT_4 var_206_arg_1 = var_75; [L672] SORT_1 var_206 = var_206_arg_0 == var_206_arg_1; [L673] SORT_1 var_207_arg_0 = var_201; [L674] SORT_1 var_207_arg_1 = var_206; [L675] SORT_1 var_207 = var_207_arg_0 | var_207_arg_1; [L676] SORT_1 var_208_arg_0 = input_72; [L677] SORT_1 var_208_arg_1 = var_207; [L678] SORT_1 var_208 = var_208_arg_0 & var_208_arg_1; [L679] var_208 = var_208 & mask_SORT_1 [L680] SORT_1 var_209_arg_0 = var_206; [L681] SORT_2 var_209_arg_1 = var_49; [L682] SORT_2 var_209_arg_2 = var_87; [L683] EXPR var_209_arg_0 ? var_209_arg_1 : var_209_arg_2 [L683] SORT_2 var_209 = var_209_arg_0 ? var_209_arg_1 : var_209_arg_2; [L684] SORT_4 var_210_arg_0 = var_200; [L685] SORT_4 var_210_arg_1 = var_90; [L686] SORT_1 var_210 = var_210_arg_0 == var_210_arg_1; [L687] SORT_1 var_211_arg_0 = var_201; [L688] SORT_1 var_211_arg_1 = var_210; [L689] SORT_1 var_211 = var_211_arg_0 | var_211_arg_1; [L690] SORT_1 var_212_arg_0 = input_89; [L691] SORT_1 var_212_arg_1 = var_211; [L692] SORT_1 var_212 = var_212_arg_0 & var_212_arg_1; [L693] var_212 = var_212 & mask_SORT_1 [L694] SORT_1 var_213_arg_0 = var_210; [L695] SORT_2 var_213_arg_1 = var_49; [L696] SORT_2 var_213_arg_2 = var_102; [L697] EXPR var_213_arg_0 ? var_213_arg_1 : var_213_arg_2 [L697] SORT_2 var_213 = var_213_arg_0 ? var_213_arg_1 : var_213_arg_2; [L698] SORT_4 var_214_arg_0 = var_200; [L699] SORT_4 var_214_arg_1 = var_105; [L700] SORT_1 var_214 = var_214_arg_0 == var_214_arg_1; [L701] SORT_1 var_215_arg_0 = var_214; [L702] SORT_1 var_215_arg_1 = var_201; [L703] SORT_1 var_215 = var_215_arg_0 | var_215_arg_1; [L704] SORT_1 var_216_arg_0 = input_104; [L705] SORT_1 var_216_arg_1 = var_215; [L706] SORT_1 var_216 = var_216_arg_0 & var_216_arg_1; [L707] var_216 = var_216 & mask_SORT_1 [L708] SORT_1 var_217_arg_0 = var_214; [L709] SORT_2 var_217_arg_1 = var_49; [L710] SORT_2 var_217_arg_2 = var_117; [L711] EXPR var_217_arg_0 ? var_217_arg_1 : var_217_arg_2 [L711] SORT_2 var_217 = var_217_arg_0 ? var_217_arg_1 : var_217_arg_2; [L712] SORT_1 var_218_arg_0 = var_216; [L713] SORT_2 var_218_arg_1 = var_217; [L714] SORT_2 var_218_arg_2 = var_65; [L715] EXPR var_218_arg_0 ? var_218_arg_1 : var_218_arg_2 [L715] SORT_2 var_218 = var_218_arg_0 ? var_218_arg_1 : var_218_arg_2; [L716] SORT_1 var_219_arg_0 = var_212; [L717] SORT_2 var_219_arg_1 = var_213; [L718] SORT_2 var_219_arg_2 = var_218; [L719] EXPR var_219_arg_0 ? var_219_arg_1 : var_219_arg_2 [L719] SORT_2 var_219 = var_219_arg_0 ? var_219_arg_1 : var_219_arg_2; [L720] SORT_1 var_220_arg_0 = var_208; [L721] SORT_2 var_220_arg_1 = var_209; [L722] SORT_2 var_220_arg_2 = var_219; [L723] EXPR var_220_arg_0 ? var_220_arg_1 : var_220_arg_2 [L723] SORT_2 var_220 = var_220_arg_0 ? var_220_arg_1 : var_220_arg_2; [L724] SORT_1 var_221_arg_0 = var_204; [L725] SORT_2 var_221_arg_1 = var_205; [L726] SORT_2 var_221_arg_2 = var_220; [L727] EXPR var_221_arg_0 ? var_221_arg_1 : var_221_arg_2 [L727] SORT_2 var_221 = var_221_arg_0 ? var_221_arg_1 : var_221_arg_2; [L728] SORT_2 var_222_arg_0 = var_64; [L729] SORT_2 var_222_arg_1 = var_221; [L730] SORT_2 var_222 = var_222_arg_0 ^ var_222_arg_1; [L731] SORT_2 next_223_arg_1 = var_222; [L732] SORT_4 var_224_arg_0 = var_42; [L733] SORT_4 var_224_arg_1 = var_36; [L734] SORT_4 var_224 = var_224_arg_0 + var_224_arg_1; [L735] SORT_4 var_225_arg_0 = var_224; [L736] SORT_2 var_225 = var_225_arg_0 >> 0; [L737] SORT_4 var_226_arg_0 = var_36; [L738] SORT_4 var_226_arg_1 = var_42; [L739] SORT_4 var_226 = var_226_arg_0 - var_226_arg_1; [L740] SORT_4 var_227_arg_0 = var_226; [L741] SORT_2 var_227 = var_227_arg_0 >> 0; [L742] SORT_1 var_228_arg_0 = input_104; [L743] SORT_2 var_228_arg_1 = var_227; [L744] SORT_2 var_228_arg_2 = state_18; [L745] EXPR var_228_arg_0 ? var_228_arg_1 : var_228_arg_2 [L745] SORT_2 var_228 = var_228_arg_0 ? var_228_arg_1 : var_228_arg_2; [L746] SORT_1 var_229_arg_0 = input_89; [L747] SORT_2 var_229_arg_1 = var_225; [L748] SORT_2 var_229_arg_2 = var_228; [L749] EXPR var_229_arg_0 ? var_229_arg_1 : var_229_arg_2 [L749] SORT_2 var_229 = var_229_arg_0 ? var_229_arg_1 : var_229_arg_2; [L750] var_229 = var_229 & mask_SORT_2 [L751] SORT_2 next_230_arg_1 = var_229; [L752] SORT_4 var_231_arg_0 = var_43; [L753] SORT_2 var_231 = var_231_arg_0 >> 0; [L754] SORT_4 var_232_arg_0 = var_73; [L755] SORT_2 var_232 = var_232_arg_0 >> 0; [L756] SORT_1 var_233_arg_0 = input_72; [L757] SORT_2 var_233_arg_1 = var_232; [L758] SORT_2 var_233_arg_2 = state_20; [L759] EXPR var_233_arg_0 ? var_233_arg_1 : var_233_arg_2 [L759] SORT_2 var_233 = var_233_arg_0 ? var_233_arg_1 : var_233_arg_2; [L760] SORT_1 var_234_arg_0 = input_33; [L761] SORT_2 var_234_arg_1 = var_231; [L762] SORT_2 var_234_arg_2 = var_233; [L763] EXPR var_234_arg_0 ? var_234_arg_1 : var_234_arg_2 [L763] SORT_2 var_234 = var_234_arg_0 ? var_234_arg_1 : var_234_arg_2; [L764] var_234 = var_234 & mask_SORT_2 [L765] SORT_2 next_235_arg_1 = var_234; [L766] SORT_1 next_236_arg_1 = state_23; [L767] SORT_1 var_238_arg_0 = ~state_25; [L768] var_238_arg_0 = var_238_arg_0 & mask_SORT_1 [L769] SORT_1 var_238_arg_1 = ~input_237; [L770] var_238_arg_1 = var_238_arg_1 & mask_SORT_1 [L771] SORT_1 var_238 = var_238_arg_0 & var_238_arg_1; [L772] SORT_1 next_239_arg_1 = ~var_238; [L773] next_239_arg_1 = next_239_arg_1 & mask_SORT_1 [L774] SORT_1 var_240_arg_0 = state_27; [L775] SORT_1 var_240_arg_1 = input_237; [L776] SORT_1 var_240 = var_240_arg_0 | var_240_arg_1; [L777] SORT_1 next_241_arg_1 = var_240; [L778] SORT_4 var_242_arg_0 = var_36; [L779] SORT_4 var_242_arg_1 = var_34; [L780] SORT_1 var_242 = var_242_arg_0 <= var_242_arg_1; [L781] SORT_1 var_243_arg_0 = ~state_23; [L782] var_243_arg_0 = var_243_arg_0 & mask_SORT_1 [L783] SORT_1 var_243_arg_1 = ~var_242; [L784] var_243_arg_1 = var_243_arg_1 & mask_SORT_1 [L785] SORT_1 var_243 = var_243_arg_0 & var_243_arg_1; [L786] SORT_1 var_244_arg_0 = ~input_104; [L787] var_244_arg_0 = var_244_arg_0 & mask_SORT_1 [L788] SORT_1 var_244_arg_1 = var_243; [L789] SORT_1 var_244 = var_244_arg_0 | var_244_arg_1; [L790] SORT_4 var_245_arg_0 = var_42; [L791] SORT_4 var_245_arg_1 = var_36; [L792] SORT_1 var_245 = var_245_arg_0 <= var_245_arg_1; [L793] SORT_1 var_246_arg_0 = ~state_23; [L794] var_246_arg_0 = var_246_arg_0 & mask_SORT_1 [L795] SORT_1 var_246_arg_1 = ~var_245; [L796] var_246_arg_1 = var_246_arg_1 & mask_SORT_1 [L797] SORT_1 var_246 = var_246_arg_0 & var_246_arg_1; [L798] SORT_1 var_247_arg_0 = ~input_89; [L799] var_247_arg_0 = var_247_arg_0 & mask_SORT_1 [L800] SORT_1 var_247_arg_1 = var_246; [L801] SORT_1 var_247 = var_247_arg_0 | var_247_arg_1; [L802] SORT_1 var_248_arg_0 = var_244; [L803] SORT_1 var_248_arg_1 = var_247; [L804] SORT_1 var_248 = var_248_arg_0 & var_248_arg_1; [L805] SORT_4 var_249_arg_0 = var_38; [L806] SORT_4 var_249_arg_1 = var_34; [L807] SORT_1 var_249 = var_249_arg_0 <= var_249_arg_1; [L808] SORT_1 var_250_arg_0 = ~state_23; [L809] var_250_arg_0 = var_250_arg_0 & mask_SORT_1 [L810] SORT_1 var_250_arg_1 = ~var_249; [L811] var_250_arg_1 = var_250_arg_1 & mask_SORT_1 [L812] SORT_1 var_250 = var_250_arg_0 & var_250_arg_1; [L813] SORT_1 var_251_arg_0 = ~input_72; [L814] var_251_arg_0 = var_251_arg_0 & mask_SORT_1 [L815] SORT_1 var_251_arg_1 = var_250; [L816] SORT_1 var_251 = var_251_arg_0 | var_251_arg_1; [L817] SORT_1 var_252_arg_0 = var_248; [L818] SORT_1 var_252_arg_1 = var_251; [L819] SORT_1 var_252 = var_252_arg_0 & var_252_arg_1; [L820] SORT_4 var_253_arg_0 = var_37; [L821] SORT_4 var_253_arg_1 = var_38; [L822] SORT_1 var_253 = var_253_arg_0 <= var_253_arg_1; [L823] SORT_1 var_254_arg_0 = ~state_23; [L824] var_254_arg_0 = var_254_arg_0 & mask_SORT_1 [L825] SORT_1 var_254_arg_1 = ~var_253; [L826] var_254_arg_1 = var_254_arg_1 & mask_SORT_1 [L827] SORT_1 var_254 = var_254_arg_0 & var_254_arg_1; [L828] SORT_1 var_255_arg_0 = ~input_33; [L829] var_255_arg_0 = var_255_arg_0 & mask_SORT_1 [L830] SORT_1 var_255_arg_1 = var_254; [L831] SORT_1 var_255 = var_255_arg_0 | var_255_arg_1; [L832] SORT_1 var_256_arg_0 = var_252; [L833] SORT_1 var_256_arg_1 = var_255; [L834] SORT_1 var_256 = var_256_arg_0 & var_256_arg_1; [L835] SORT_2 var_257_arg_0 = var_64; [L836] SORT_2 var_257_arg_1 = state_6; [L837] SORT_1 var_257 = var_257_arg_0 == var_257_arg_1; [L838] SORT_2 var_258_arg_0 = var_62; [L839] SORT_2 var_258_arg_1 = var_52; [L840] SORT_1 var_258 = var_258_arg_0 == var_258_arg_1; [L841] SORT_1 var_259_arg_0 = var_257; [L842] SORT_1 var_259_arg_1 = var_258; [L843] SORT_1 var_259 = var_259_arg_0 & var_259_arg_1; [L844] SORT_2 var_260_arg_0 = var_58; [L845] SORT_2 var_260_arg_1 = var_55; [L846] SORT_1 var_260 = var_260_arg_0 == var_260_arg_1; [L847] SORT_1 var_261_arg_0 = var_259; [L848] SORT_1 var_261_arg_1 = var_260; [L849] SORT_1 var_261 = var_261_arg_0 & var_261_arg_1; [L850] SORT_2 var_262_arg_0 = var_54; [L851] SORT_2 var_262_arg_1 = var_59; [L852] SORT_1 var_262 = var_262_arg_0 == var_262_arg_1; [L853] SORT_1 var_263_arg_0 = var_261; [L854] SORT_1 var_263_arg_1 = var_262; [L855] SORT_1 var_263 = var_263_arg_0 & var_263_arg_1; [L856] SORT_2 var_264_arg_0 = var_51; [L857] SORT_2 var_264_arg_1 = var_63; [L858] SORT_1 var_264 = var_264_arg_0 == var_264_arg_1; [L859] SORT_1 var_265_arg_0 = var_263; [L860] SORT_1 var_265_arg_1 = var_264; [L861] SORT_1 var_265 = var_265_arg_0 & var_265_arg_1; [L862] SORT_2 var_266_arg_0 = var_49; [L863] SORT_2 var_266_arg_1 = var_65; [L864] SORT_1 var_266 = var_266_arg_0 == var_266_arg_1; [L865] SORT_1 var_267_arg_0 = var_265; [L866] SORT_1 var_267_arg_1 = var_266; [L867] SORT_1 var_267 = var_267_arg_0 & var_267_arg_1; [L868] SORT_1 var_268_arg_0 = ~state_25; [L869] var_268_arg_0 = var_268_arg_0 & mask_SORT_1 [L870] SORT_1 var_268_arg_1 = var_267; [L871] SORT_1 var_268 = var_268_arg_0 & var_268_arg_1; [L872] SORT_1 var_269_arg_0 = ~input_237; [L873] var_269_arg_0 = var_269_arg_0 & mask_SORT_1 [L874] SORT_1 var_269_arg_1 = var_268; [L875] SORT_1 var_269 = var_269_arg_0 | var_269_arg_1; [L876] SORT_1 var_270_arg_0 = var_256; [L877] SORT_1 var_270_arg_1 = var_269; [L878] SORT_1 var_270 = var_270_arg_0 & var_270_arg_1; [L879] SORT_1 var_271_arg_0 = input_104; [L880] SORT_1 var_271_arg_1 = input_89; [L881] SORT_1 var_271 = var_271_arg_0 | var_271_arg_1; [L882] SORT_1 var_272_arg_0 = input_72; [L883] SORT_1 var_272_arg_1 = var_271; [L884] SORT_1 var_272 = var_272_arg_0 | var_272_arg_1; [L885] SORT_1 var_273_arg_0 = input_33; [L886] SORT_1 var_273_arg_1 = var_272; [L887] SORT_1 var_273 = var_273_arg_0 | var_273_arg_1; [L888] SORT_1 var_274_arg_0 = input_237; [L889] SORT_1 var_274_arg_1 = var_273; [L890] SORT_1 var_274 = var_274_arg_0 | var_274_arg_1; [L891] SORT_1 var_275_arg_0 = var_270; [L892] SORT_1 var_275_arg_1 = var_274; [L893] SORT_1 var_275 = var_275_arg_0 & var_275_arg_1; [L894] SORT_1 var_276_arg_0 = input_104; [L895] SORT_1 var_276_arg_1 = input_89; [L896] SORT_1 var_276 = var_276_arg_0 & var_276_arg_1; [L897] SORT_1 var_277_arg_0 = input_72; [L898] SORT_1 var_277_arg_1 = var_271; [L899] SORT_1 var_277 = var_277_arg_0 & var_277_arg_1; [L900] SORT_1 var_278_arg_0 = var_276; [L901] SORT_1 var_278_arg_1 = var_277; [L902] SORT_1 var_278 = var_278_arg_0 | var_278_arg_1; [L903] SORT_1 var_279_arg_0 = input_33; [L904] SORT_1 var_279_arg_1 = var_272; [L905] SORT_1 var_279 = var_279_arg_0 & var_279_arg_1; [L906] SORT_1 var_280_arg_0 = var_278; [L907] SORT_1 var_280_arg_1 = var_279; [L908] SORT_1 var_280 = var_280_arg_0 | var_280_arg_1; [L909] SORT_1 var_281_arg_0 = input_237; [L910] SORT_1 var_281_arg_1 = var_273; [L911] SORT_1 var_281 = var_281_arg_0 & var_281_arg_1; [L912] SORT_1 var_282_arg_0 = var_280; [L913] SORT_1 var_282_arg_1 = var_281; [L914] SORT_1 var_282 = var_282_arg_0 | var_282_arg_1; [L915] SORT_1 var_283_arg_0 = var_275; [L916] SORT_1 var_283_arg_1 = ~var_282; [L917] var_283_arg_1 = var_283_arg_1 & mask_SORT_1 [L918] SORT_1 var_283 = var_283_arg_0 & var_283_arg_1; [L919] SORT_1 var_284_arg_0 = ~state_25; [L920] var_284_arg_0 = var_284_arg_0 & mask_SORT_1 [L921] SORT_1 var_284_arg_1 = state_27; [L922] SORT_1 var_284 = var_284_arg_0 & var_284_arg_1; [L923] SORT_1 var_285_arg_0 = ~state_23; [L924] var_285_arg_0 = var_285_arg_0 & mask_SORT_1 [L925] SORT_1 var_285_arg_1 = ~var_284; [L926] var_285_arg_1 = var_285_arg_1 & mask_SORT_1 [L927] SORT_1 var_285 = var_285_arg_0 & var_285_arg_1; [L928] SORT_1 var_286_arg_0 = ~state_25; [L929] var_286_arg_0 = var_286_arg_0 & mask_SORT_1 [L930] SORT_1 var_286_arg_1 = state_27; [L931] SORT_1 var_286 = var_286_arg_0 | var_286_arg_1; [L932] SORT_1 var_287_arg_0 = var_285; [L933] SORT_1 var_287_arg_1 = var_286; [L934] SORT_1 var_287 = var_287_arg_0 & var_287_arg_1; [L935] SORT_1 var_288_arg_0 = var_283; [L936] SORT_1 var_288_arg_1 = var_287; [L937] SORT_1 var_288 = var_288_arg_0 & var_288_arg_1; [L938] SORT_1 var_289_arg_0 = var_238; [L939] SORT_1 var_289_arg_1 = var_240; [L940] SORT_1 var_289 = var_289_arg_0 & var_289_arg_1; [L941] SORT_1 var_290_arg_0 = ~state_23; [L942] var_290_arg_0 = var_290_arg_0 & mask_SORT_1 [L943] SORT_1 var_290_arg_1 = ~var_289; [L944] var_290_arg_1 = var_290_arg_1 & mask_SORT_1 [L945] SORT_1 var_290 = var_290_arg_0 & var_290_arg_1; [L946] SORT_1 var_291_arg_0 = var_238; [L947] SORT_1 var_291_arg_1 = var_240; [L948] SORT_1 var_291 = var_291_arg_0 | var_291_arg_1; [L949] SORT_1 var_292_arg_0 = var_290; [L950] SORT_1 var_292_arg_1 = var_291; [L951] SORT_1 var_292 = var_292_arg_0 & var_292_arg_1; [L952] SORT_1 var_293_arg_0 = var_288; [L953] SORT_1 var_293_arg_1 = var_292; [L954] SORT_1 var_293 = var_293_arg_0 & var_293_arg_1; [L955] SORT_1 var_294_arg_0 = var_293; [L956] SORT_1 var_294_arg_1 = ~state_29; [L957] var_294_arg_1 = var_294_arg_1 & mask_SORT_1 [L958] SORT_1 var_294 = var_294_arg_0 & var_294_arg_1; [L959] SORT_1 next_295_arg_1 = ~var_294; [L960] next_295_arg_1 = next_295_arg_1 & mask_SORT_1 [L962] state_6 = next_123_arg_1 [L963] state_8 = next_142_arg_1 [L964] state_10 = next_161_arg_1 [L965] state_12 = next_180_arg_1 [L966] state_14 = next_199_arg_1 [L967] state_16 = next_223_arg_1 [L968] state_18 = next_230_arg_1 [L969] state_20 = next_235_arg_1 [L970] state_23 = next_236_arg_1 [L971] state_25 = next_239_arg_1 [L972] state_27 = next_241_arg_1 [L973] state_29 = next_295_arg_1 VAL [bad_32_arg_0=0, init_11_arg_1=0, init_13_arg_1=0, init_15_arg_1=0, init_17_arg_1=0, init_19_arg_1=0, init_21_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, input_104=1, input_237=254, input_33=1, input_72=0, input_89=1, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=4294967295, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, next_123_arg_1=27, next_142_arg_1=0, next_161_arg_1=2, next_180_arg_1=167, next_199_arg_1=4, next_223_arg_1=51, next_230_arg_1=1, next_235_arg_1=1, next_236_arg_1=0, next_239_arg_1=1, next_241_arg_1=1, next_295_arg_1=1, state_10=2, state_12=167, state_14=4, state_16=51, state_18=1, state_20=1, state_23=0, state_25=1, state_27=1, state_29=1, state_6=27, state_8=0, var_100=5, var_100_arg_0=0, var_100_arg_1=4, var_100_arg_2=5, var_101=5, var_101_arg_0=0, var_101_arg_1=1, var_101_arg_2=5, var_102=5, var_102_arg_0=0, var_102_arg_1=0, var_102_arg_2=5, var_103=5, var_103_arg_0=0, var_103_arg_1=0, var_103_arg_2=5, var_105=2, var_105_arg_0=0, var_105_arg_1=1, var_106=0, var_106_arg_0=0, var_106_arg_1=2, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_108=1, var_108_arg_0=1, var_108_arg_1=1, var_109=0, var_109_arg_0=1, var_109_arg_1=2, var_110=1, var_110_arg_0=2, var_110_arg_1=2, var_111=0, var_111_arg_0=3, var_111_arg_1=2, var_112=0, var_112_arg_0=4, var_112_arg_1=2, var_113=1, var_113_arg_0=0, var_113_arg_1=5, var_113_arg_2=1, var_114=1, var_114_arg_0=0, var_114_arg_1=3, var_114_arg_2=1, var_115=4, var_115_arg_0=1, var_115_arg_1=4, var_115_arg_2=1, var_116=4, var_116_arg_0=0, var_116_arg_1=1, var_116_arg_2=4, var_117=4, var_117_arg_0=0, var_117_arg_1=0, var_117_arg_2=4, var_118=4, var_118_arg_0=0, var_118_arg_1=0, var_118_arg_2=4, var_119=4, var_119_arg_0=1, var_119_arg_1=4, var_119_arg_2=0, var_120=5, var_120_arg_0=1, var_120_arg_1=5, var_120_arg_2=4, var_121=5, var_121_arg_0=0, var_121_arg_1=1, var_121_arg_2=5, var_122=27, var_122_arg_0=1, var_122_arg_1=4, var_122_arg_2=5, var_124=0, var_124_arg_0=1, var_124_arg_1=0, var_125=0, var_125_arg_0=0, var_125_arg_1=0, var_126=0, var_126_arg_0=1, var_126_arg_1=0, var_127=4, var_127_arg_0=0, var_127_arg_1=0, var_127_arg_2=4, var_128=1, var_128_arg_0=0, var_128_arg_1=1, var_129=0, var_129_arg_0=0, var_129_arg_1=1, var_130=0, var_130_arg_0=1, var_130_arg_1=0, var_130_arg_2=1, var_131=0, var_131_arg_0=0, var_131_arg_1=0, var_132=0, var_132_arg_0=1, var_132_arg_1=0, var_133=5, var_133_arg_0=0, var_133_arg_1=0, var_133_arg_2=5, var_134=0, var_134_arg_0=0, var_134_arg_1=0, var_135=0, var_135_arg_0=1, var_135_arg_1=0, var_136=4, var_136_arg_0=0, var_136_arg_1=0, var_136_arg_2=4, var_137=1, var_137_arg_0=0, var_137_arg_1=4, var_137_arg_2=1, var_138=1, var_138_arg_0=0, var_138_arg_1=5, var_138_arg_2=1, var_139=1, var_139_arg_0=0, var_139_arg_1=0, var_139_arg_2=1, var_140=1, var_140_arg_0=0, var_140_arg_1=4, var_140_arg_2=1, var_141=0, var_141_arg_0=1, var_141_arg_1=1, var_143=0, var_143_arg_0=2, var_143_arg_1=0, var_144=1, var_144_arg_0=0, var_144_arg_1=1, var_145=1, var_145_arg_0=1, var_145_arg_1=1, var_146=0, var_146_arg_0=1, var_146_arg_1=0, var_146_arg_2=4, var_147=0, var_147_arg_0=0, var_147_arg_1=0, var_148=0, var_148_arg_0=0, var_148_arg_1=0, var_149=1, var_149_arg_0=0, var_149_arg_1=0, var_149_arg_2=1, var_150=0, var_150_arg_0=0, var_150_arg_1=0, var_151=0, var_151_arg_0=1, var_151_arg_1=0, var_152=5, var_152_arg_0=0, var_152_arg_1=0, var_152_arg_2=5, var_153=1, var_153_arg_0=1, var_153_arg_1=0, var_154=1, var_154_arg_0=1, var_154_arg_1=1, var_155=0, var_155_arg_0=1, var_155_arg_1=0, var_155_arg_2=4, var_156=0, var_156_arg_0=1, var_156_arg_1=0, var_156_arg_2=4, var_157=0, var_157_arg_0=0, var_157_arg_1=5, var_157_arg_2=0, var_158=0, var_158_arg_0=0, var_158_arg_1=1, var_158_arg_2=0, var_159=0, var_159_arg_0=1, var_159_arg_1=0, var_159_arg_2=0, var_160=2, var_160_arg_0=2, var_160_arg_1=0, var_162=0, var_162_arg_0=3, var_162_arg_1=0, var_163=0, var_163_arg_0=0, var_163_arg_1=0, var_164=0, var_164_arg_0=1, var_164_arg_1=0, var_165=4, var_165_arg_0=0, var_165_arg_1=0, var_165_arg_2=4, var_166=0, var_166_arg_0=0, var_166_arg_1=0, var_167=0, var_167_arg_0=0, var_167_arg_1=0, var_168=1, var_168_arg_0=0, var_168_arg_1=0, var_168_arg_2=1, var_169=0, var_169_arg_0=0, var_169_arg_1=0, var_170=0, var_170_arg_0=1, var_170_arg_1=0, var_171=5, var_171_arg_0=0, var_171_arg_1=0, var_171_arg_2=5, var_172=0, var_172_arg_0=0, var_172_arg_1=0, var_173=0, var_173_arg_0=1, var_173_arg_1=0, var_174=4, var_174_arg_0=0, var_174_arg_1=0, var_174_arg_2=4, var_175=3, var_175_arg_0=0, var_175_arg_1=4, var_175_arg_2=3, var_176=3, var_176_arg_0=0, var_176_arg_1=5, var_176_arg_2=3, var_177=3, var_177_arg_0=0, var_177_arg_1=1, var_177_arg_2=3, var_178=3, var_178_arg_0=0, var_178_arg_1=4, var_178_arg_2=3, var_179=167, var_179_arg_0=3, var_179_arg_1=3, var_181=0, var_181_arg_0=4, var_181_arg_1=0, var_182=0, var_182_arg_0=0, var_182_arg_1=0, var_183=0, var_183_arg_0=1, var_183_arg_1=0, var_184=4, var_184_arg_0=0, var_184_arg_1=0, var_184_arg_2=4, var_185=0, var_185_arg_0=0, var_185_arg_1=0, var_186=0, var_186_arg_0=0, var_186_arg_1=0, var_187=1, var_187_arg_0=0, var_187_arg_1=0, var_187_arg_2=1, var_188=1, var_188_arg_0=0, var_188_arg_1=1, var_189=1, var_189_arg_0=1, var_189_arg_1=1, var_190=0, var_190_arg_0=1, var_190_arg_1=0, var_190_arg_2=5, var_191=0, var_191_arg_0=0, var_191_arg_1=0, var_192=0, var_192_arg_0=1, var_192_arg_1=0, var_193=4, var_193_arg_0=0, var_193_arg_1=0, var_193_arg_2=4, var_194=5, var_194_arg_0=0, var_194_arg_1=4, var_194_arg_2=5, var_195=0, var_195_arg_0=1, var_195_arg_1=0, var_195_arg_2=5, var_196=0, var_196_arg_0=0, var_196_arg_1=1, var_196_arg_2=0, var_197=0, var_197_arg_0=0, var_197_arg_1=4, var_197_arg_2=0, var_198=4, var_198_arg_0=4, var_198_arg_1=0, var_200=5, var_201=0, var_201_arg_0=5, var_201_arg_1=0, var_202=0, var_202_arg_0=5, var_202_arg_1=2, var_203=0, var_203_arg_0=0, var_203_arg_1=0, var_204=0, var_204_arg_0=1, var_204_arg_1=0, var_205=4, var_205_arg_0=0, var_205_arg_1=0, var_205_arg_2=4, var_206=0, var_206_arg_0=5, var_206_arg_1=1, var_207=0, var_207_arg_0=0, var_207_arg_1=0, var_208=0, var_208_arg_0=0, var_208_arg_1=0, var_209=1, var_209_arg_0=0, var_209_arg_1=0, var_209_arg_2=1, var_210=0, var_210_arg_0=5, var_210_arg_1=4, var_211=0, var_211_arg_0=0, var_211_arg_1=0, var_212=0, var_212_arg_0=1, var_212_arg_1=0, var_213=5, var_213_arg_0=0, var_213_arg_1=0, var_213_arg_2=5, var_214=0, var_214_arg_0=5, var_214_arg_1=2, var_215=0, var_215_arg_0=0, var_215_arg_1=0, var_216=0, var_216_arg_0=1, var_216_arg_1=0, var_217=4, var_217_arg_0=0, var_217_arg_1=0, var_217_arg_2=4, var_218=1, var_218_arg_0=0, var_218_arg_1=4, var_218_arg_2=1, var_219=1, var_219_arg_0=0, var_219_arg_1=5, var_219_arg_2=1, var_22=0, var_220=1, var_220_arg_0=0, var_220_arg_1=1, var_220_arg_2=1, var_221=1, var_221_arg_0=0, var_221_arg_1=4, var_221_arg_2=1, var_222=51, var_222_arg_0=5, var_222_arg_1=1, var_224=1, var_224_arg_0=1, var_224_arg_1=0, var_225=1, var_225_arg_0=1, var_226=4294967295, var_226_arg_0=0, var_226_arg_1=1, var_227=255, var_227_arg_0=4294967295, var_228=255, var_228_arg_0=1, var_228_arg_1=255, var_228_arg_2=0, var_229=1, var_229_arg_0=1, var_229_arg_1=1, var_229_arg_2=255, var_231=1, var_231_arg_0=1, var_232=255, var_232_arg_0=4294967295, var_233=0, var_233_arg_0=0, var_233_arg_1=255, var_233_arg_2=0, var_234=1, var_234_arg_0=1, var_234_arg_1=1, var_234_arg_2=0, var_238=0, var_238_arg_0=0, var_238_arg_1=1, var_240=1, var_240_arg_0=0, var_240_arg_1=254, var_242=1, var_242_arg_0=0, var_242_arg_1=0, var_243=1, var_243_arg_0=1, var_243_arg_1=1, var_244=1, var_244_arg_0=0, var_244_arg_1=1, var_245=0, var_245_arg_0=1, var_245_arg_1=0, var_246=0, var_246_arg_0=0, var_246_arg_1=1, var_247=1, var_247_arg_0=1, var_247_arg_1=0, var_248=1, var_248_arg_0=1, var_248_arg_1=1, var_249=1, var_249_arg_0=0, var_249_arg_1=0, var_250=0, var_250_arg_0=1, var_250_arg_1=0, var_251=1, var_251_arg_0=1, var_251_arg_1=0, var_252=1, var_252_arg_0=1, var_252_arg_1=1, var_253=0, var_253_arg_0=2, var_253_arg_1=0, var_254=0, var_254_arg_0=0, var_254_arg_1=1, var_255=0, var_255_arg_0=0, var_255_arg_1=0, var_256=0, var_256_arg_0=1, var_256_arg_1=0, var_257=0, var_257_arg_0=5, var_257_arg_1=0, var_258=0, var_258_arg_0=4, var_258_arg_1=1, var_259=0, var_259_arg_0=0, var_259_arg_1=0, var_260=0, var_260_arg_0=3, var_260_arg_1=4, var_261=0, var_261_arg_0=0, var_261_arg_1=0, var_262=0, var_262_arg_0=2, var_262_arg_1=3, var_263=0, var_263_arg_0=0, var_263_arg_1=0, var_264=0, var_264_arg_0=1, var_264_arg_1=5, var_265=0, var_265_arg_0=0, var_265_arg_1=0, var_266=0, var_266_arg_0=0, var_266_arg_1=1, var_267=0, var_267_arg_0=0, var_267_arg_1=0, var_268=0, var_268_arg_0=0, var_268_arg_1=0, var_269=1, var_269_arg_0=1, var_269_arg_1=0, var_270=0, var_270_arg_0=0, var_270_arg_1=1, var_271=1, var_271_arg_0=1, var_271_arg_1=1, var_272=1, var_272_arg_0=0, var_272_arg_1=1, var_273=1, var_273_arg_0=1, var_273_arg_1=1, var_274=1, var_274_arg_0=254, var_274_arg_1=1, var_275=0, var_275_arg_0=0, var_275_arg_1=1, var_276=1, var_276_arg_0=1, var_276_arg_1=1, var_277=0, var_277_arg_0=0, var_277_arg_1=1, var_278=1, var_278_arg_0=1, var_278_arg_1=0, var_279=1, var_279_arg_0=1, var_279_arg_1=1, var_280=1, var_280_arg_0=1, var_280_arg_1=1, var_281=0, var_281_arg_0=254, var_281_arg_1=1, var_282=1, var_282_arg_0=1, var_282_arg_1=0, var_283=0, var_283_arg_0=0, var_283_arg_1=1, var_284=0, var_284_arg_0=0, var_284_arg_1=0, var_285=0, var_285_arg_0=1, var_285_arg_1=0, var_286=0, var_286_arg_0=0, var_286_arg_1=0, var_287=0, var_287_arg_0=0, var_287_arg_1=0, var_288=0, var_288_arg_0=0, var_288_arg_1=0, var_289=0, var_289_arg_0=0, var_289_arg_1=1, var_290=0, var_290_arg_0=0, var_290_arg_1=0, var_291=1, var_291_arg_0=0, var_291_arg_1=1, var_292=0, var_292_arg_0=0, var_292_arg_1=1, var_293=0, var_293_arg_0=0, var_293_arg_1=0, var_294=0, var_294_arg_0=0, var_294_arg_1=0, var_31=0, var_31_arg_0=0, var_31_arg_1=1, var_34=0, var_35=0, var_36=0, var_36_arg_0=0, var_36_arg_1=0, var_37=2, var_38=0, var_38_arg_0=0, var_38_arg_1=0, var_39=0, var_39_arg_0=2, var_39_arg_1=0, var_40=0, var_40_arg_0=0, var_40_arg_1=0, var_41=1, var_41_arg_0=0, var_41_arg_1=0, var_42=1, var_43=1, var_43_arg_0=1, var_43_arg_1=0, var_44=2, var_44_arg_0=2, var_44_arg_1=1, var_45=2, var_45_arg_0=0, var_45_arg_1=2, var_46=0, var_46_arg_0=0, var_46_arg_1=2, var_47=1, var_47_arg_0=1, var_47_arg_1=0, var_48=1, var_48_arg_0=1, var_48_arg_1=1, var_49=0, var_5=0, var_50=0, var_50_arg_0=1, var_50_arg_1=2, var_51=1, var_52=1, var_52_arg_0=1, var_52_arg_1=0, var_53=1, var_53_arg_0=2, var_53_arg_1=2, var_54=2, var_55=4, var_55_arg_0=2, var_55_arg_1=0, var_56=3, var_57=0, var_57_arg_0=3, var_57_arg_1=2, var_58=3, var_59=3, var_59_arg_0=3, var_59_arg_1=0, var_60=4, var_61=0, var_61_arg_0=4, var_61_arg_1=2, var_62=4, var_63=5, var_63_arg_0=4, var_63_arg_1=0, var_64=5, var_65=1, var_65_arg_0=5, var_65_arg_1=0, var_66=1, var_66_arg_0=0, var_66_arg_1=5, var_66_arg_2=1, var_67=1, var_67_arg_0=0, var_67_arg_1=3, var_67_arg_2=1, var_68=4, var_68_arg_0=1, var_68_arg_1=4, var_68_arg_2=1, var_69=4, var_69_arg_0=0, var_69_arg_1=1, var_69_arg_2=4, var_70=4, var_70_arg_0=0, var_70_arg_1=0, var_70_arg_2=4, var_71=4, var_71_arg_0=0, var_71_arg_1=0, var_71_arg_2=4, var_73=4294967295, var_73_arg_0=0, var_73_arg_1=1, var_74=4294967294, var_74_arg_0=2, var_74_arg_1=4294967295, var_75=1, var_75_arg_0=0, var_75_arg_1=4294967294, var_76=0, var_76_arg_0=0, var_76_arg_1=1, var_77=1, var_77_arg_0=1, var_77_arg_1=0, var_78=0, var_78_arg_0=0, var_78_arg_1=1, var_79=1, var_79_arg_0=1, var_79_arg_1=1, var_80=0, var_80_arg_0=2, var_80_arg_1=1, var_81=0, var_81_arg_0=3, var_81_arg_1=1, var_82=0, var_82_arg_0=4, var_82_arg_1=1, var_83=1, var_83_arg_0=0, var_83_arg_1=5, var_83_arg_2=1, var_84=1, var_84_arg_0=0, var_84_arg_1=3, var_84_arg_2=1, var_85=1, var_85_arg_0=0, var_85_arg_1=4, var_85_arg_2=1, var_86=1, var_86_arg_0=1, var_86_arg_1=1, var_86_arg_2=1, var_87=1, var_87_arg_0=0, var_87_arg_1=0, var_87_arg_2=1, var_88=1, var_88_arg_0=0, var_88_arg_1=0, var_88_arg_2=1, var_90=4, var_90_arg_0=1, var_90_arg_1=0, var_91=0, var_91_arg_0=0, var_91_arg_1=4, var_92=1, var_92_arg_0=1, var_92_arg_1=0, var_93=1, var_93_arg_0=1, var_93_arg_1=1, var_94=0, var_94_arg_0=1, var_94_arg_1=4, var_95=0, var_95_arg_0=2, var_95_arg_1=4, var_96=0, var_96_arg_0=3, var_96_arg_1=4, var_97=1, var_97_arg_0=4, var_97_arg_1=4, var_98=5, var_98_arg_0=1, var_98_arg_1=5, var_98_arg_2=1, var_99=5, var_99_arg_0=0, var_99_arg_1=3, var_99_arg_2=5] [L98] input_33 = __VERIFIER_nondet_uchar() [L99] input_33 = input_33 & mask_SORT_1 [L100] input_72 = __VERIFIER_nondet_uchar() [L101] input_72 = input_72 & mask_SORT_1 [L102] input_89 = __VERIFIER_nondet_uchar() [L103] input_89 = input_89 & mask_SORT_1 [L104] input_104 = __VERIFIER_nondet_uchar() [L105] input_104 = input_104 & mask_SORT_1 [L106] input_237 = __VERIFIER_nondet_uchar() [L109] SORT_1 var_31_arg_0 = state_27; [L110] SORT_1 var_31_arg_1 = ~state_29; [L111] var_31_arg_1 = var_31_arg_1 & mask_SORT_1 [L112] SORT_1 var_31 = var_31_arg_0 & var_31_arg_1; [L113] var_31 = var_31 & mask_SORT_1 [L114] SORT_1 bad_32_arg_0 = var_31; [L115] CALL __VERIFIER_assert(!(bad_32_arg_0)) [L20] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L20] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 292.6s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2 mSDtfsCounter, 7 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 150.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-03 02:34:19,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI --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 64bit --witnessprinter.graph.data.programhash 26db93204ab32e8f9e21f7eb034d2307b8352a18baf9236ed38d699dc2a3b5eb --- 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-5e519f3 [2022-11-03 02:34:21,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:34:21,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:34:21,938 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:34:21,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:34:21,940 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:34:21,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:34:21,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:34:21,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:34:21,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:34:21,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:34:21,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:34:21,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:34:21,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:34:21,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:34:21,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:34:21,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:34:21,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:34:21,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:34:21,961 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:34:21,963 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:34:21,979 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:34:21,980 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:34:21,981 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:34:21,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:34:21,995 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:34:21,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:34:21,999 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:34:21,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:34:22,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:34:22,003 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:34:22,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:34:22,006 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:34:22,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:34:22,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:34:22,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:34:22,026 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:34:22,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:34:22,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:34:22,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:34:22,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:34:22,031 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:34:22,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:34:22,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:34:22,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:34:22,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:34:22,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:34:22,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:34:22,076 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:34:22,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:34:22,076 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:34:22,076 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:34:22,077 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:34:22,077 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:34:22,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:34:22,078 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:34:22,078 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:34:22,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:34:22,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:34:22,079 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:34:22,079 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:34:22,080 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:34:22,080 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:34:22,080 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:34:22,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:34:22,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:34:22,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:34:22,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:34:22,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:34:22,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:34:22,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:34:22,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:34:22,083 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:34:22,083 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:34:22,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:34:22,083 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:34:22,084 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:34:22,084 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26db93204ab32e8f9e21f7eb034d2307b8352a18baf9236ed38d699dc2a3b5eb [2022-11-03 02:34:22,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:34:22,480 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:34:22,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:34:22,488 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:34:22,488 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:34:22,491 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c [2022-11-03 02:34:22,576 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data/2d3446a07/69025fdd3c1849bfac81b63afa6b02d3/FLAG8afd26822 [2022-11-03 02:34:23,316 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:34:23,317 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c [2022-11-03 02:34:23,330 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data/2d3446a07/69025fdd3c1849bfac81b63afa6b02d3/FLAG8afd26822 [2022-11-03 02:34:23,576 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/data/2d3446a07/69025fdd3c1849bfac81b63afa6b02d3 [2022-11-03 02:34:23,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:34:23,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:34:23,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:34:23,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:34:23,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:34:23,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:34:23" (1/1) ... [2022-11-03 02:34:23,589 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b498534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:23, skipping insertion in model container [2022-11-03 02:34:23,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:34:23" (1/1) ... [2022-11-03 02:34:23,599 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:34:23,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:34:23,825 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c[1014,1027] [2022-11-03 02:34:24,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:34:24,140 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:34:24,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.loyd.1.prop1-func-interl.c[1014,1027] [2022-11-03 02:34:24,266 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:34:24,279 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:34:24,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24 WrapperNode [2022-11-03 02:34:24,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:34:24,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:34:24,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:34:24,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:34:24,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,317 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,454 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1254 [2022-11-03 02:34:24,454 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:34:24,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:34:24,455 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:34:24,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:34:24,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,505 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,519 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:34:24,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:34:24,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:34:24,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:34:24,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (1/1) ... [2022-11-03 02:34:24,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:34:24,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:34:24,607 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:34:24,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:34:24,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:34:24,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:34:25,041 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:34:25,044 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:34:26,356 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:34:26,366 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:34:26,367 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:34:26,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:26 BoogieIcfgContainer [2022-11-03 02:34:26,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:34:26,372 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:34:26,372 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:34:26,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:34:26,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:34:23" (1/3) ... [2022-11-03 02:34:26,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b281ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:34:26, skipping insertion in model container [2022-11-03 02:34:26,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:34:24" (2/3) ... [2022-11-03 02:34:26,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b281ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:34:26, skipping insertion in model container [2022-11-03 02:34:26,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:34:26" (3/3) ... [2022-11-03 02:34:26,379 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.loyd.1.prop1-func-interl.c [2022-11-03 02:34:26,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:34:26,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:34:26,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:34:26,506 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;@6ff3b6d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:34:26,507 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:34:26,511 INFO L276 IsEmpty]: Start isEmpty. Operand has 155 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 154 states have internal predecessors, (229), 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) [2022-11-03 02:34:26,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 02:34:26,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:26,518 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 02:34:26,519 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:26,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:26,524 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 02:34:26,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:26,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269193858] [2022-11-03 02:34:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:26,537 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:26,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:26,538 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:26,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:34:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:26,829 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-03 02:34:26,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:26,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:27,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:27,011 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:27,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269193858] [2022-11-03 02:34:27,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269193858] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:27,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:27,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:34:27,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167847720] [2022-11-03 02:34:27,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:27,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:34:27,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:27,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:34:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:34:27,061 INFO L87 Difference]: Start difference. First operand has 155 states, 153 states have (on average 1.4967320261437909) internal successors, (229), 154 states have internal predecessors, (229), 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 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-03 02:34:27,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:27,474 INFO L93 Difference]: Finished difference Result 452 states and 678 transitions. [2022-11-03 02:34:27,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:34:27,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-11-03 02:34:27,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:27,503 INFO L225 Difference]: With dead ends: 452 [2022-11-03 02:34:27,504 INFO L226 Difference]: Without dead ends: 299 [2022-11-03 02:34:27,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:27,515 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 435 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:27,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 613 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:27,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-03 02:34:27,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 153. [2022-11-03 02:34:27,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.480263157894737) internal successors, (225), 152 states have internal predecessors, (225), 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) [2022-11-03 02:34:27,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 225 transitions. [2022-11-03 02:34:27,608 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 225 transitions. Word has length 5 [2022-11-03 02:34:27,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:27,608 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 225 transitions. [2022-11-03 02:34:27,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 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) [2022-11-03 02:34:27,609 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 225 transitions. [2022-11-03 02:34:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:27,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:27,619 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:27,638 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-03 02:34:27,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:27,833 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:27,834 INFO L85 PathProgramCache]: Analyzing trace with hash -105678635, now seen corresponding path program 1 times [2022-11-03 02:34:27,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:27,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1852187368] [2022-11-03 02:34:27,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:27,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:27,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:27,842 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:27,843 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:34:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:28,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:34:28,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:28,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:28,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:28,828 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:28,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1852187368] [2022-11-03 02:34:28,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1852187368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:28,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:28,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:34:28,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891457683] [2022-11-03 02:34:28,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:28,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:34:28,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:28,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:34:28,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:34:28,838 INFO L87 Difference]: Start difference. First operand 153 states and 225 transitions. Second operand has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2022-11-03 02:34:29,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:29,125 INFO L93 Difference]: Finished difference Result 595 states and 882 transitions. [2022-11-03 02:34:29,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:34:29,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:29,128 INFO L225 Difference]: With dead ends: 595 [2022-11-03 02:34:29,129 INFO L226 Difference]: Without dead ends: 446 [2022-11-03 02:34:29,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:29,131 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 647 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:29,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 851 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:34:29,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-03 02:34:29,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 155. [2022-11-03 02:34:29,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.474025974025974) internal successors, (227), 154 states have internal predecessors, (227), 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) [2022-11-03 02:34:29,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 227 transitions. [2022-11-03 02:34:29,144 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 227 transitions. Word has length 152 [2022-11-03 02:34:29,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:29,145 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 227 transitions. [2022-11-03 02:34:29,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.0) internal successors, (152), 4 states have internal predecessors, (152), 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) [2022-11-03 02:34:29,145 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 227 transitions. [2022-11-03 02:34:29,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:29,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:29,149 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:29,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 02:34:29,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:29,374 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:29,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1825446999, now seen corresponding path program 1 times [2022-11-03 02:34:29,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:29,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853414053] [2022-11-03 02:34:29,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:29,377 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:29,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:29,379 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:29,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:34:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:30,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:34:30,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:30,267 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:30,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:30,268 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:30,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853414053] [2022-11-03 02:34:30,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853414053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:30,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:30,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:34:30,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017817988] [2022-11-03 02:34:30,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:30,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:34:30,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:34:30,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:30,272 INFO L87 Difference]: Start difference. First operand 155 states and 227 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:30,616 INFO L93 Difference]: Finished difference Result 600 states and 886 transitions. [2022-11-03 02:34:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:30,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:30,619 INFO L225 Difference]: With dead ends: 600 [2022-11-03 02:34:30,619 INFO L226 Difference]: Without dead ends: 451 [2022-11-03 02:34:30,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:30,621 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 854 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:30,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 1281 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-03 02:34:30,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 161. [2022-11-03 02:34:30,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.46875) internal successors, (235), 160 states have internal predecessors, (235), 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) [2022-11-03 02:34:30,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 235 transitions. [2022-11-03 02:34:30,632 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 235 transitions. Word has length 152 [2022-11-03 02:34:30,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:30,632 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 235 transitions. [2022-11-03 02:34:30,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 235 transitions. [2022-11-03 02:34:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:30,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:30,635 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:30,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-03 02:34:30,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:30,859 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1669466457, now seen corresponding path program 1 times [2022-11-03 02:34:30,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:30,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2068538654] [2022-11-03 02:34:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:30,862 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:30,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:30,864 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:30,869 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:34:31,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:31,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:34:31,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:31,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:31,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:31,755 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:31,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2068538654] [2022-11-03 02:34:31,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2068538654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:31,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:31,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:34:31,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099662589] [2022-11-03 02:34:31,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:31,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:34:31,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:31,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:34:31,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:31,763 INFO L87 Difference]: Start difference. First operand 161 states and 235 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:32,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:32,153 INFO L93 Difference]: Finished difference Result 600 states and 885 transitions. [2022-11-03 02:34:32,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:32,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:32,157 INFO L225 Difference]: With dead ends: 600 [2022-11-03 02:34:32,157 INFO L226 Difference]: Without dead ends: 451 [2022-11-03 02:34:32,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:32,159 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 847 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 1273 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:32,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 1273 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:32,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-03 02:34:32,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 163. [2022-11-03 02:34:32,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.462962962962963) internal successors, (237), 162 states have internal predecessors, (237), 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) [2022-11-03 02:34:32,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 237 transitions. [2022-11-03 02:34:32,182 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 237 transitions. Word has length 152 [2022-11-03 02:34:32,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:32,184 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 237 transitions. [2022-11-03 02:34:32,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 237 transitions. [2022-11-03 02:34:32,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:32,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:32,193 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:32,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:32,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:32,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:32,407 INFO L85 PathProgramCache]: Analyzing trace with hash -118403365, now seen corresponding path program 1 times [2022-11-03 02:34:32,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:32,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599195769] [2022-11-03 02:34:32,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:32,409 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:32,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:32,410 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:32,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:34:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:33,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:34:33,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:33,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:33,325 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:33,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:33,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599195769] [2022-11-03 02:34:33,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599195769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:33,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:33,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:34:33,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699679449] [2022-11-03 02:34:33,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:33,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:34:33,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:33,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:34:33,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:33,337 INFO L87 Difference]: Start difference. First operand 163 states and 237 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:33,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:33,707 INFO L93 Difference]: Finished difference Result 600 states and 884 transitions. [2022-11-03 02:34:33,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:33,708 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:33,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:33,711 INFO L225 Difference]: With dead ends: 600 [2022-11-03 02:34:33,711 INFO L226 Difference]: Without dead ends: 451 [2022-11-03 02:34:33,711 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:33,712 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 840 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:33,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1269 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:33,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-03 02:34:33,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 165. [2022-11-03 02:34:33,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4573170731707317) internal successors, (239), 164 states have internal predecessors, (239), 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) [2022-11-03 02:34:33,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 239 transitions. [2022-11-03 02:34:33,727 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 239 transitions. Word has length 152 [2022-11-03 02:34:33,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:33,728 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 239 transitions. [2022-11-03 02:34:33,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:33,729 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 239 transitions. [2022-11-03 02:34:33,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:33,737 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:33,737 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:33,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:33,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:33,950 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:33,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash -48755491, now seen corresponding path program 1 times [2022-11-03 02:34:33,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:33,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1974921079] [2022-11-03 02:34:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:33,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:33,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:33,954 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:33,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:34:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:34,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:34:34,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:35,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:35,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:35,230 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:35,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1974921079] [2022-11-03 02:34:35,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1974921079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:35,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:35,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:34:35,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348144830] [2022-11-03 02:34:35,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:35,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:34:35,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:35,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:34:35,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:35,234 INFO L87 Difference]: Start difference. First operand 165 states and 239 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:35,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:35,495 INFO L93 Difference]: Finished difference Result 464 states and 682 transitions. [2022-11-03 02:34:35,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:34:35,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:35,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:35,498 INFO L225 Difference]: With dead ends: 464 [2022-11-03 02:34:35,498 INFO L226 Difference]: Without dead ends: 315 [2022-11-03 02:34:35,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:35,500 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 235 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:35,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 881 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-03 02:34:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-03 02:34:35,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 167. [2022-11-03 02:34:35,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.4518072289156627) internal successors, (241), 166 states have internal predecessors, (241), 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) [2022-11-03 02:34:35,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 241 transitions. [2022-11-03 02:34:35,511 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 241 transitions. Word has length 152 [2022-11-03 02:34:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:35,511 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 241 transitions. [2022-11-03 02:34:35,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 241 transitions. [2022-11-03 02:34:35,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:35,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:35,515 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:35,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:35,740 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:35,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1350198111, now seen corresponding path program 1 times [2022-11-03 02:34:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:35,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71026650] [2022-11-03 02:34:35,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:35,743 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:35,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:35,747 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:35,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:34:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:36,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:34:36,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:36,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:36,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:36,721 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:36,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71026650] [2022-11-03 02:34:36,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71026650] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:36,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:36,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:36,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174202146] [2022-11-03 02:34:36,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:36,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:36,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:36,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:36,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:36,725 INFO L87 Difference]: Start difference. First operand 167 states and 241 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:37,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:37,005 INFO L93 Difference]: Finished difference Result 612 states and 900 transitions. [2022-11-03 02:34:37,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:37,006 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:37,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:37,008 INFO L225 Difference]: With dead ends: 612 [2022-11-03 02:34:37,008 INFO L226 Difference]: Without dead ends: 463 [2022-11-03 02:34:37,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:37,010 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 668 mSDsluCounter, 1081 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:37,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1318 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-03 02:34:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-03 02:34:37,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 169. [2022-11-03 02:34:37,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.4464285714285714) internal successors, (243), 168 states have internal predecessors, (243), 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) [2022-11-03 02:34:37,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 243 transitions. [2022-11-03 02:34:37,019 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 243 transitions. Word has length 152 [2022-11-03 02:34:37,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:37,019 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 243 transitions. [2022-11-03 02:34:37,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:37,020 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 243 transitions. [2022-11-03 02:34:37,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:37,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:37,022 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:37,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:37,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:37,245 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:37,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:37,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1713664609, now seen corresponding path program 1 times [2022-11-03 02:34:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:37,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922113027] [2022-11-03 02:34:37,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:37,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:37,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:37,249 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:37,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:34:37,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:37,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:34:37,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:38,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:38,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:38,206 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:38,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922113027] [2022-11-03 02:34:38,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922113027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:38,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:38,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:38,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958839799] [2022-11-03 02:34:38,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:38,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:38,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:38,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:38,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:38,209 INFO L87 Difference]: Start difference. First operand 169 states and 243 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:38,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:38,477 INFO L93 Difference]: Finished difference Result 612 states and 899 transitions. [2022-11-03 02:34:38,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:38,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:38,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:38,480 INFO L225 Difference]: With dead ends: 612 [2022-11-03 02:34:38,480 INFO L226 Difference]: Without dead ends: 463 [2022-11-03 02:34:38,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:38,482 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 657 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:38,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1327 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 21 Unchecked, 0.2s Time] [2022-11-03 02:34:38,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-03 02:34:38,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 173. [2022-11-03 02:34:38,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 172 states have (on average 1.441860465116279) internal successors, (248), 172 states have internal predecessors, (248), 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) [2022-11-03 02:34:38,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 248 transitions. [2022-11-03 02:34:38,490 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 248 transitions. Word has length 152 [2022-11-03 02:34:38,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:38,491 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 248 transitions. [2022-11-03 02:34:38,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:38,492 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 248 transitions. [2022-11-03 02:34:38,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:38,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:38,494 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:38,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:38,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:38,718 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:38,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:38,719 INFO L85 PathProgramCache]: Analyzing trace with hash 765612643, now seen corresponding path program 1 times [2022-11-03 02:34:38,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:38,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1019509489] [2022-11-03 02:34:38,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:38,720 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:38,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:38,722 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:38,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:34:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:39,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:34:39,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:39,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:39,958 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:39,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1019509489] [2022-11-03 02:34:39,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1019509489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:39,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:39,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:39,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214310121] [2022-11-03 02:34:39,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:39,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:39,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:39,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:39,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:39,961 INFO L87 Difference]: Start difference. First operand 173 states and 248 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:40,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:40,249 INFO L93 Difference]: Finished difference Result 612 states and 898 transitions. [2022-11-03 02:34:40,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:40,251 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:40,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:40,253 INFO L225 Difference]: With dead ends: 612 [2022-11-03 02:34:40,253 INFO L226 Difference]: Without dead ends: 463 [2022-11-03 02:34:40,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:40,257 INFO L413 NwaCegarLoop]: 244 mSDtfsCounter, 651 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:40,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1328 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-03 02:34:40,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-03 02:34:40,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 175. [2022-11-03 02:34:40,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.4367816091954022) internal successors, (250), 174 states have internal predecessors, (250), 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) [2022-11-03 02:34:40,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 250 transitions. [2022-11-03 02:34:40,266 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 250 transitions. Word has length 152 [2022-11-03 02:34:40,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:40,267 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 250 transitions. [2022-11-03 02:34:40,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:40,267 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 250 transitions. [2022-11-03 02:34:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:40,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:40,270 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:40,300 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:40,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:40,489 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:40,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:40,490 INFO L85 PathProgramCache]: Analyzing trace with hash 331107045, now seen corresponding path program 1 times [2022-11-03 02:34:40,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:40,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182077574] [2022-11-03 02:34:40,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:40,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:40,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:40,492 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:40,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:34:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:40,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:34:41,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:41,538 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:41,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:41,538 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:41,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182077574] [2022-11-03 02:34:41,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [182077574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:41,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:41,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:41,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411508900] [2022-11-03 02:34:41,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:41,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:41,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:41,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:41,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:41,540 INFO L87 Difference]: Start difference. First operand 175 states and 250 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:41,799 INFO L93 Difference]: Finished difference Result 612 states and 897 transitions. [2022-11-03 02:34:41,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:41,801 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:41,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:41,804 INFO L225 Difference]: With dead ends: 612 [2022-11-03 02:34:41,804 INFO L226 Difference]: Without dead ends: 463 [2022-11-03 02:34:41,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:41,805 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 645 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:41,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 1330 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 29 Unchecked, 0.2s Time] [2022-11-03 02:34:41,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-03 02:34:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 177. [2022-11-03 02:34:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 1.4318181818181819) internal successors, (252), 176 states have internal predecessors, (252), 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) [2022-11-03 02:34:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 252 transitions. [2022-11-03 02:34:41,815 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 252 transitions. Word has length 152 [2022-11-03 02:34:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:41,816 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 252 transitions. [2022-11-03 02:34:41,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:41,816 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 252 transitions. [2022-11-03 02:34:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:41,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:41,818 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:41,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:42,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:42,026 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:42,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:42,027 INFO L85 PathProgramCache]: Analyzing trace with hash -375489561, now seen corresponding path program 1 times [2022-11-03 02:34:42,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:42,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1515624102] [2022-11-03 02:34:42,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:42,028 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:42,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:42,029 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:42,030 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:34:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:42,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:34:42,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:43,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:43,127 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:43,127 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:43,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1515624102] [2022-11-03 02:34:43,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1515624102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:43,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:43,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:34:43,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516429459] [2022-11-03 02:34:43,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:43,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:34:43,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:43,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:34:43,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:43,131 INFO L87 Difference]: Start difference. First operand 177 states and 252 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:43,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:43,367 INFO L93 Difference]: Finished difference Result 476 states and 695 transitions. [2022-11-03 02:34:43,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:34:43,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:43,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:43,371 INFO L225 Difference]: With dead ends: 476 [2022-11-03 02:34:43,371 INFO L226 Difference]: Without dead ends: 327 [2022-11-03 02:34:43,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:43,372 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 236 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:43,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 902 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-03 02:34:43,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-03 02:34:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 179. [2022-11-03 02:34:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.4269662921348314) internal successors, (254), 178 states have internal predecessors, (254), 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) [2022-11-03 02:34:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 254 transitions. [2022-11-03 02:34:43,380 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 254 transitions. Word has length 152 [2022-11-03 02:34:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:43,381 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 254 transitions. [2022-11-03 02:34:43,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 254 transitions. [2022-11-03 02:34:43,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:43,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:43,383 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:43,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:43,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:43,611 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:43,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:43,611 INFO L85 PathProgramCache]: Analyzing trace with hash 486344041, now seen corresponding path program 1 times [2022-11-03 02:34:43,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:43,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1836106893] [2022-11-03 02:34:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:43,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:43,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:43,614 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:43,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:34:44,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:44,169 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:34:44,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:44,713 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:44,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:44,722 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:44,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1836106893] [2022-11-03 02:34:44,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1836106893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:44,723 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:44,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:44,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070054795] [2022-11-03 02:34:44,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:44,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:44,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:44,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:44,725 INFO L87 Difference]: Start difference. First operand 179 states and 254 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:44,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:44,996 INFO L93 Difference]: Finished difference Result 624 states and 913 transitions. [2022-11-03 02:34:44,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:34:44,997 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:45,000 INFO L225 Difference]: With dead ends: 624 [2022-11-03 02:34:45,000 INFO L226 Difference]: Without dead ends: 475 [2022-11-03 02:34:45,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:45,001 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 669 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:45,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1334 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 17 Unchecked, 0.2s Time] [2022-11-03 02:34:45,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-03 02:34:45,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 181. [2022-11-03 02:34:45,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.4222222222222223) internal successors, (256), 180 states have internal predecessors, (256), 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) [2022-11-03 02:34:45,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 256 transitions. [2022-11-03 02:34:45,010 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 256 transitions. Word has length 152 [2022-11-03 02:34:45,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:45,011 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 256 transitions. [2022-11-03 02:34:45,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:45,011 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 256 transitions. [2022-11-03 02:34:45,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:45,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:45,013 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:45,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:45,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:45,235 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:45,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:45,235 INFO L85 PathProgramCache]: Analyzing trace with hash 974391147, now seen corresponding path program 1 times [2022-11-03 02:34:45,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:45,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1837409976] [2022-11-03 02:34:45,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:45,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:45,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:45,238 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:45,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:34:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:45,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:34:45,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:46,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:46,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:46,310 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1837409976] [2022-11-03 02:34:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1837409976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:46,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:46,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:46,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774303764] [2022-11-03 02:34:46,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:46,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:46,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:46,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:46,312 INFO L87 Difference]: Start difference. First operand 181 states and 256 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:46,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:46,604 INFO L93 Difference]: Finished difference Result 624 states and 912 transitions. [2022-11-03 02:34:46,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:34:46,605 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:46,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:46,607 INFO L225 Difference]: With dead ends: 624 [2022-11-03 02:34:46,608 INFO L226 Difference]: Without dead ends: 475 [2022-11-03 02:34:46,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:46,609 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 663 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:46,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [663 Valid, 1338 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 17 Unchecked, 0.2s Time] [2022-11-03 02:34:46,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-03 02:34:46,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 183. [2022-11-03 02:34:46,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.4175824175824177) internal successors, (258), 182 states have internal predecessors, (258), 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) [2022-11-03 02:34:46,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 258 transitions. [2022-11-03 02:34:46,616 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 258 transitions. Word has length 152 [2022-11-03 02:34:46,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:46,617 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 258 transitions. [2022-11-03 02:34:46,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:46,617 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 258 transitions. [2022-11-03 02:34:46,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:46,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:46,619 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:46,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:46,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:46,841 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:46,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:46,842 INFO L85 PathProgramCache]: Analyzing trace with hash -307781139, now seen corresponding path program 1 times [2022-11-03 02:34:46,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:46,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269635823] [2022-11-03 02:34:46,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:46,843 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:46,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:46,845 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:46,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:34:47,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:47,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-03 02:34:47,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:48,017 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:48,017 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:48,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269635823] [2022-11-03 02:34:48,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269635823] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:48,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:48,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:48,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595232223] [2022-11-03 02:34:48,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:48,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:48,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:48,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:48,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:48,020 INFO L87 Difference]: Start difference. First operand 183 states and 258 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:48,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:48,301 INFO L93 Difference]: Finished difference Result 624 states and 911 transitions. [2022-11-03 02:34:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:34:48,307 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:48,313 INFO L225 Difference]: With dead ends: 624 [2022-11-03 02:34:48,314 INFO L226 Difference]: Without dead ends: 475 [2022-11-03 02:34:48,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:48,320 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 652 mSDsluCounter, 1094 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 652 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:48,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [652 Valid, 1350 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-03 02:34:48,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-11-03 02:34:48,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 187. [2022-11-03 02:34:48,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.413978494623656) internal successors, (263), 186 states have internal predecessors, (263), 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) [2022-11-03 02:34:48,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 263 transitions. [2022-11-03 02:34:48,334 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 263 transitions. Word has length 152 [2022-11-03 02:34:48,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:48,334 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 263 transitions. [2022-11-03 02:34:48,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:48,335 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 263 transitions. [2022-11-03 02:34:48,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:48,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:48,337 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:48,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:48,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:48,551 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:48,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:48,551 INFO L85 PathProgramCache]: Analyzing trace with hash 1621151087, now seen corresponding path program 1 times [2022-11-03 02:34:48,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:48,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [83942934] [2022-11-03 02:34:48,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:48,552 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:48,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:48,554 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:48,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:34:49,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:49,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:34:49,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:49,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:49,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:49,713 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:49,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [83942934] [2022-11-03 02:34:49,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [83942934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:49,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:49,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:34:49,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48015090] [2022-11-03 02:34:49,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:49,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:34:49,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:49,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:34:49,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:49,716 INFO L87 Difference]: Start difference. First operand 187 states and 263 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:50,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:50,184 INFO L93 Difference]: Finished difference Result 600 states and 874 transitions. [2022-11-03 02:34:50,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:34:50,187 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:50,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:50,188 INFO L225 Difference]: With dead ends: 600 [2022-11-03 02:34:50,188 INFO L226 Difference]: Without dead ends: 451 [2022-11-03 02:34:50,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:34:50,189 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 754 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:50,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1203 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:34:50,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-03 02:34:50,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 191. [2022-11-03 02:34:50,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.4105263157894736) internal successors, (268), 190 states have internal predecessors, (268), 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) [2022-11-03 02:34:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 268 transitions. [2022-11-03 02:34:50,196 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 268 transitions. Word has length 152 [2022-11-03 02:34:50,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:50,197 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 268 transitions. [2022-11-03 02:34:50,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:34:50,197 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 268 transitions. [2022-11-03 02:34:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:50,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:50,199 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:50,230 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:50,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:50,420 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:50,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:50,421 INFO L85 PathProgramCache]: Analyzing trace with hash -26211855, now seen corresponding path program 1 times [2022-11-03 02:34:50,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:50,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186964532] [2022-11-03 02:34:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:50,422 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:50,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:50,422 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:50,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:34:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:50,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:34:50,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:51,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:51,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:51,566 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:51,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186964532] [2022-11-03 02:34:51,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186964532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:51,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:51,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687869774] [2022-11-03 02:34:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:51,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:51,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:51,568 INFO L87 Difference]: Start difference. First operand 191 states and 268 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:52,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:52,099 INFO L93 Difference]: Finished difference Result 636 states and 927 transitions. [2022-11-03 02:34:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:34:52,102 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:52,103 INFO L225 Difference]: With dead ends: 636 [2022-11-03 02:34:52,103 INFO L226 Difference]: Without dead ends: 487 [2022-11-03 02:34:52,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:34:52,104 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1018 mSDsluCounter, 1373 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1018 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:52,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1018 Valid, 1626 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:34:52,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-03 02:34:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 193. [2022-11-03 02:34:52,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.40625) internal successors, (270), 192 states have internal predecessors, (270), 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) [2022-11-03 02:34:52,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 270 transitions. [2022-11-03 02:34:52,117 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 270 transitions. Word has length 152 [2022-11-03 02:34:52,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:52,117 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 270 transitions. [2022-11-03 02:34:52,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:52,119 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 270 transitions. [2022-11-03 02:34:52,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:52,120 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:52,121 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:52,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:52,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:52,338 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:52,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:52,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1064796429, now seen corresponding path program 1 times [2022-11-03 02:34:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:52,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855473316] [2022-11-03 02:34:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:52,340 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:52,341 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:52,342 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:52,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:34:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:52,840 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:34:52,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:53,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:53,436 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:53,436 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:53,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855473316] [2022-11-03 02:34:53,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855473316] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:53,436 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:53,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:53,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995357028] [2022-11-03 02:34:53,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:53,437 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:53,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:53,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:53,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:53,438 INFO L87 Difference]: Start difference. First operand 193 states and 270 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:53,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:53,923 INFO L93 Difference]: Finished difference Result 636 states and 926 transitions. [2022-11-03 02:34:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:34:53,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:53,927 INFO L225 Difference]: With dead ends: 636 [2022-11-03 02:34:53,928 INFO L226 Difference]: Without dead ends: 487 [2022-11-03 02:34:53,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:34:53,930 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 1010 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:53,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 1621 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:53,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-03 02:34:53,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 195. [2022-11-03 02:34:53,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.402061855670103) internal successors, (272), 194 states have internal predecessors, (272), 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) [2022-11-03 02:34:53,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 272 transitions. [2022-11-03 02:34:53,937 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 272 transitions. Word has length 152 [2022-11-03 02:34:53,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:53,938 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 272 transitions. [2022-11-03 02:34:53,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:53,938 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 272 transitions. [2022-11-03 02:34:53,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:53,939 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:53,939 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:53,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:54,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:54,161 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:54,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:54,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1088310389, now seen corresponding path program 1 times [2022-11-03 02:34:54,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:54,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1144188687] [2022-11-03 02:34:54,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:54,163 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:54,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:54,164 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:54,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:34:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:54,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:34:54,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:55,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:55,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:55,118 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:55,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1144188687] [2022-11-03 02:34:55,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1144188687] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:55,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:55,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:55,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127279074] [2022-11-03 02:34:55,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:55,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:55,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:55,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:55,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:55,121 INFO L87 Difference]: Start difference. First operand 195 states and 272 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:55,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:55,619 INFO L93 Difference]: Finished difference Result 636 states and 925 transitions. [2022-11-03 02:34:55,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:34:55,622 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:55,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:55,623 INFO L225 Difference]: With dead ends: 636 [2022-11-03 02:34:55,623 INFO L226 Difference]: Without dead ends: 487 [2022-11-03 02:34:55,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:34:55,624 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 1002 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1614 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:55,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1002 Valid, 1614 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:34:55,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-03 02:34:55,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 197. [2022-11-03 02:34:55,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.3979591836734695) internal successors, (274), 196 states have internal predecessors, (274), 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) [2022-11-03 02:34:55,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 274 transitions. [2022-11-03 02:34:55,641 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 274 transitions. Word has length 152 [2022-11-03 02:34:55,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:55,642 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 274 transitions. [2022-11-03 02:34:55,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:55,642 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 274 transitions. [2022-11-03 02:34:55,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:55,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:55,643 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:55,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:55,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:55,846 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1206751863, now seen corresponding path program 1 times [2022-11-03 02:34:55,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:55,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639116268] [2022-11-03 02:34:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:55,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:55,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:55,849 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:55,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:34:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:56,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:34:56,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:56,917 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:56,917 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:56,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639116268] [2022-11-03 02:34:56,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [639116268] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:56,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:56,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:56,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362811333] [2022-11-03 02:34:56,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:56,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:56,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:56,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:56,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:56,919 INFO L87 Difference]: Start difference. First operand 197 states and 274 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:57,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:57,413 INFO L93 Difference]: Finished difference Result 636 states and 924 transitions. [2022-11-03 02:34:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:34:57,420 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:57,422 INFO L225 Difference]: With dead ends: 636 [2022-11-03 02:34:57,422 INFO L226 Difference]: Without dead ends: 487 [2022-11-03 02:34:57,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:34:57,424 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 994 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:57,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 1607 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:57,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-03 02:34:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 199. [2022-11-03 02:34:57,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.393939393939394) internal successors, (276), 198 states have internal predecessors, (276), 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) [2022-11-03 02:34:57,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 276 transitions. [2022-11-03 02:34:57,438 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 276 transitions. Word has length 152 [2022-11-03 02:34:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:57,438 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 276 transitions. [2022-11-03 02:34:57,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 276 transitions. [2022-11-03 02:34:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:57,439 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:57,439 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:57,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:57,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:57,660 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:57,660 INFO L85 PathProgramCache]: Analyzing trace with hash -826642183, now seen corresponding path program 1 times [2022-11-03 02:34:57,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:57,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064022468] [2022-11-03 02:34:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:57,661 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:57,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:57,662 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:57,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:34:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:58,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:34:58,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:58,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:58,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:58,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064022468] [2022-11-03 02:34:58,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064022468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:58,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:58,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:34:58,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070998147] [2022-11-03 02:34:58,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:58,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:34:58,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:58,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:34:58,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:34:58,658 INFO L87 Difference]: Start difference. First operand 199 states and 276 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:34:59,086 INFO L93 Difference]: Finished difference Result 636 states and 923 transitions. [2022-11-03 02:34:59,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:34:59,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:34:59,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:34:59,095 INFO L225 Difference]: With dead ends: 636 [2022-11-03 02:34:59,095 INFO L226 Difference]: Without dead ends: 487 [2022-11-03 02:34:59,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:34:59,102 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 986 mSDsluCounter, 1339 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:34:59,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1600 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:34:59,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-03 02:34:59,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 201. [2022-11-03 02:34:59,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.39) internal successors, (278), 200 states have internal predecessors, (278), 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) [2022-11-03 02:34:59,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 278 transitions. [2022-11-03 02:34:59,113 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 278 transitions. Word has length 152 [2022-11-03 02:34:59,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:34:59,113 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 278 transitions. [2022-11-03 02:34:59,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:34:59,113 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 278 transitions. [2022-11-03 02:34:59,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:34:59,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:34:59,115 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:34:59,133 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:34:59,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:34:59,322 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:34:59,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:34:59,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2133784581, now seen corresponding path program 1 times [2022-11-03 02:34:59,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:34:59,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [318254205] [2022-11-03 02:34:59,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:34:59,324 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:34:59,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:34:59,326 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:34:59,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:34:59,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:34:59,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:34:59,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:34:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:34:59,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:34:59,983 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:34:59,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [318254205] [2022-11-03 02:34:59,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [318254205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:34:59,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:34:59,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:34:59,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776669944] [2022-11-03 02:34:59,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:34:59,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:34:59,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:34:59,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:34:59,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:34:59,985 INFO L87 Difference]: Start difference. First operand 201 states and 278 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:35:00,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:00,218 INFO L93 Difference]: Finished difference Result 600 states and 868 transitions. [2022-11-03 02:35:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:00,221 INFO L225 Difference]: With dead ends: 600 [2022-11-03 02:35:00,221 INFO L226 Difference]: Without dead ends: 451 [2022-11-03 02:35:00,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:00,222 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 693 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:00,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 1189 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:35:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-03 02:35:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 211. [2022-11-03 02:35:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.3904761904761904) internal successors, (292), 210 states have internal predecessors, (292), 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) [2022-11-03 02:35:00,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 292 transitions. [2022-11-03 02:35:00,229 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 292 transitions. Word has length 152 [2022-11-03 02:35:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:00,230 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 292 transitions. [2022-11-03 02:35:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:35:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 292 transitions. [2022-11-03 02:35:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:00,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:00,231 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:00,252 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-11-03 02:35:00,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:00,452 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:00,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:00,452 INFO L85 PathProgramCache]: Analyzing trace with hash 220600701, now seen corresponding path program 1 times [2022-11-03 02:35:00,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:00,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2001519566] [2022-11-03 02:35:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:00,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:00,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:00,454 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:00,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:35:00,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:00,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:35:00,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:01,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:01,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:01,213 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:01,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2001519566] [2022-11-03 02:35:01,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2001519566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:01,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:01,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:01,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836180643] [2022-11-03 02:35:01,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:01,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:01,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:01,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:01,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:01,216 INFO L87 Difference]: Start difference. First operand 211 states and 292 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:01,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:01,427 INFO L93 Difference]: Finished difference Result 612 states and 885 transitions. [2022-11-03 02:35:01,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:01,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:01,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:01,433 INFO L225 Difference]: With dead ends: 612 [2022-11-03 02:35:01,433 INFO L226 Difference]: Without dead ends: 463 [2022-11-03 02:35:01,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:01,435 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 543 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 26 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:01,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 1397 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 26 Unchecked, 0.2s Time] [2022-11-03 02:35:01,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2022-11-03 02:35:01,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 213. [2022-11-03 02:35:01,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.3867924528301887) internal successors, (294), 212 states have internal predecessors, (294), 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) [2022-11-03 02:35:01,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 294 transitions. [2022-11-03 02:35:01,442 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 294 transitions. Word has length 152 [2022-11-03 02:35:01,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:01,442 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 294 transitions. [2022-11-03 02:35:01,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:01,443 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 294 transitions. [2022-11-03 02:35:01,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:01,444 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:01,444 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:01,466 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-03 02:35:01,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:01,658 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:01,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:01,658 INFO L85 PathProgramCache]: Analyzing trace with hash -550132865, now seen corresponding path program 1 times [2022-11-03 02:35:01,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:01,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [427372828] [2022-11-03 02:35:01,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:01,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:01,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:01,660 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:01,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:35:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:02,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:35:02,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:02,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:02,577 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:02,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [427372828] [2022-11-03 02:35:02,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [427372828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:02,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:02,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:02,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465465891] [2022-11-03 02:35:02,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:02,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:02,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:02,579 INFO L87 Difference]: Start difference. First operand 213 states and 294 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:03,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:03,053 INFO L93 Difference]: Finished difference Result 636 states and 920 transitions. [2022-11-03 02:35:03,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:03,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:03,057 INFO L225 Difference]: With dead ends: 636 [2022-11-03 02:35:03,057 INFO L226 Difference]: Without dead ends: 487 [2022-11-03 02:35:03,058 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:35:03,059 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 937 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:03,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 1550 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:35:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 487 states. [2022-11-03 02:35:03,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 487 to 217. [2022-11-03 02:35:03,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.3842592592592593) internal successors, (299), 216 states have internal predecessors, (299), 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) [2022-11-03 02:35:03,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 299 transitions. [2022-11-03 02:35:03,067 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 299 transitions. Word has length 152 [2022-11-03 02:35:03,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:03,067 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 299 transitions. [2022-11-03 02:35:03,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:03,068 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 299 transitions. [2022-11-03 02:35:03,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:03,068 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:03,069 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:03,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:03,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:03,283 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:03,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:03,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1326349953, now seen corresponding path program 1 times [2022-11-03 02:35:03,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:03,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1790324566] [2022-11-03 02:35:03,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:03,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:03,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:03,285 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:03,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:35:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:03,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:35:03,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:04,422 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:04,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:04,424 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:04,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1790324566] [2022-11-03 02:35:04,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1790324566] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:04,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:04,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:35:04,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663905426] [2022-11-03 02:35:04,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:04,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:35:04,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:04,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:35:04,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:35:04,427 INFO L87 Difference]: Start difference. First operand 217 states and 299 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:35:04,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:04,815 INFO L93 Difference]: Finished difference Result 382 states and 541 transitions. [2022-11-03 02:35:04,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:04,816 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:04,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:04,818 INFO L225 Difference]: With dead ends: 382 [2022-11-03 02:35:04,818 INFO L226 Difference]: Without dead ends: 233 [2022-11-03 02:35:04,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:35:04,819 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 74 mSDsluCounter, 1375 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 108 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:04,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 1584 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 108 Unchecked, 0.3s Time] [2022-11-03 02:35:04,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-03 02:35:04,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2022-11-03 02:35:04,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.375) internal successors, (319), 232 states have internal predecessors, (319), 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) [2022-11-03 02:35:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 319 transitions. [2022-11-03 02:35:04,828 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 319 transitions. Word has length 152 [2022-11-03 02:35:04,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:04,829 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 319 transitions. [2022-11-03 02:35:04,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:35:04,829 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 319 transitions. [2022-11-03 02:35:04,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:04,830 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:04,831 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:04,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:05,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:05,054 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:05,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:05,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1643761149, now seen corresponding path program 1 times [2022-11-03 02:35:05,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:05,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770033150] [2022-11-03 02:35:05,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:05,056 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:05,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:05,059 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:05,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:35:05,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:05,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 02:35:05,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:06,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:06,496 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:06,497 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:06,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770033150] [2022-11-03 02:35:06,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770033150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:06,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:06,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:35:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883622339] [2022-11-03 02:35:06,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:06,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:35:06,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:35:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:35:06,499 INFO L87 Difference]: Start difference. First operand 233 states and 319 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:35:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:06,846 INFO L93 Difference]: Finished difference Result 412 states and 578 transitions. [2022-11-03 02:35:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:35:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:06,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:06,849 INFO L225 Difference]: With dead ends: 412 [2022-11-03 02:35:06,849 INFO L226 Difference]: Without dead ends: 263 [2022-11-03 02:35:06,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:35:06,850 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 49 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:06,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 1576 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 52 Invalid, 0 Unknown, 109 Unchecked, 0.3s Time] [2022-11-03 02:35:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-03 02:35:06,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-11-03 02:35:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 1.3587786259541985) internal successors, (356), 262 states have internal predecessors, (356), 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) [2022-11-03 02:35:06,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 356 transitions. [2022-11-03 02:35:06,856 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 356 transitions. Word has length 152 [2022-11-03 02:35:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:06,856 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 356 transitions. [2022-11-03 02:35:06,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:35:06,857 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 356 transitions. [2022-11-03 02:35:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:06,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:06,859 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:06,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:07,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:07,079 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:07,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:07,079 INFO L85 PathProgramCache]: Analyzing trace with hash -585923071, now seen corresponding path program 1 times [2022-11-03 02:35:07,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:07,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1949223712] [2022-11-03 02:35:07,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:07,081 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:07,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:07,082 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:07,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:35:07,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:07,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:35:07,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:09,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:09,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:09,010 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:09,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1949223712] [2022-11-03 02:35:09,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1949223712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:09,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:09,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:35:09,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485035363] [2022-11-03 02:35:09,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:09,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:35:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:09,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:35:09,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:09,012 INFO L87 Difference]: Start difference. First operand 263 states and 356 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:09,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:09,593 INFO L93 Difference]: Finished difference Result 704 states and 1009 transitions. [2022-11-03 02:35:09,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:35:09,598 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:09,600 INFO L225 Difference]: With dead ends: 704 [2022-11-03 02:35:09,600 INFO L226 Difference]: Without dead ends: 555 [2022-11-03 02:35:09,601 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:35:09,602 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 801 mSDsluCounter, 1705 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:09,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 1979 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 131 Unchecked, 0.4s Time] [2022-11-03 02:35:09,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2022-11-03 02:35:09,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 269. [2022-11-03 02:35:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 268 states have (on average 1.3582089552238805) internal successors, (364), 268 states have internal predecessors, (364), 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) [2022-11-03 02:35:09,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 364 transitions. [2022-11-03 02:35:09,611 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 364 transitions. Word has length 152 [2022-11-03 02:35:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:09,611 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 364 transitions. [2022-11-03 02:35:09,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 364 transitions. [2022-11-03 02:35:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:09,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:09,613 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:09,636 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:09,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:09,826 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:09,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:09,827 INFO L85 PathProgramCache]: Analyzing trace with hash -345683325, now seen corresponding path program 1 times [2022-11-03 02:35:09,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:09,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267784882] [2022-11-03 02:35:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:09,828 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:09,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:09,829 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:09,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:35:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:10,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 02:35:10,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:11,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:11,347 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:11,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267784882] [2022-11-03 02:35:11,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267784882] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:11,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:11,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:11,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862813843] [2022-11-03 02:35:11,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:11,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:11,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:11,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:11,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:11,349 INFO L87 Difference]: Start difference. First operand 269 states and 364 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:11,650 INFO L93 Difference]: Finished difference Result 702 states and 1005 transitions. [2022-11-03 02:35:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:11,651 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:11,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:11,653 INFO L225 Difference]: With dead ends: 702 [2022-11-03 02:35:11,654 INFO L226 Difference]: Without dead ends: 553 [2022-11-03 02:35:11,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:11,655 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 636 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 636 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 93 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:11,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [636 Valid, 1399 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 93 Unchecked, 0.2s Time] [2022-11-03 02:35:11,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-11-03 02:35:11,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 271. [2022-11-03 02:35:11,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 270 states have (on average 1.3555555555555556) internal successors, (366), 270 states have internal predecessors, (366), 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) [2022-11-03 02:35:11,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 366 transitions. [2022-11-03 02:35:11,664 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 366 transitions. Word has length 152 [2022-11-03 02:35:11,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:11,665 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 366 transitions. [2022-11-03 02:35:11,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 366 transitions. [2022-11-03 02:35:11,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:11,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:11,667 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:11,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:11,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:11,883 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:11,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:11,883 INFO L85 PathProgramCache]: Analyzing trace with hash -318617723, now seen corresponding path program 1 times [2022-11-03 02:35:11,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:11,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492414535] [2022-11-03 02:35:11,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:11,885 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:11,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:11,885 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:11,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:35:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:12,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:35:12,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:12,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:12,828 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:12,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492414535] [2022-11-03 02:35:12,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492414535] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:12,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:12,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:12,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68398480] [2022-11-03 02:35:12,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:12,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:12,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:12,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:12,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:12,830 INFO L87 Difference]: Start difference. First operand 271 states and 366 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:13,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:13,051 INFO L93 Difference]: Finished difference Result 658 states and 938 transitions. [2022-11-03 02:35:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:13,052 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:13,054 INFO L225 Difference]: With dead ends: 658 [2022-11-03 02:35:13,054 INFO L226 Difference]: Without dead ends: 509 [2022-11-03 02:35:13,054 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:13,055 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 499 mSDsluCounter, 1122 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:13,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1430 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-03 02:35:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-03 02:35:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 275. [2022-11-03 02:35:13,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 1.354014598540146) internal successors, (371), 274 states have internal predecessors, (371), 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) [2022-11-03 02:35:13,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 371 transitions. [2022-11-03 02:35:13,062 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 371 transitions. Word has length 152 [2022-11-03 02:35:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:13,063 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 371 transitions. [2022-11-03 02:35:13,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:13,068 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 371 transitions. [2022-11-03 02:35:13,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:13,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:13,069 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:13,087 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:13,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:13,282 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:13,282 INFO L85 PathProgramCache]: Analyzing trace with hash 2065307015, now seen corresponding path program 1 times [2022-11-03 02:35:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:13,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167113766] [2022-11-03 02:35:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:13,283 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:13,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:13,284 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:13,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:35:13,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:13,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:35:13,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:14,320 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:14,320 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:14,320 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:14,320 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167113766] [2022-11-03 02:35:14,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167113766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:14,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:14,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:14,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281010019] [2022-11-03 02:35:14,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:14,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:14,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:14,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:14,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:14,322 INFO L87 Difference]: Start difference. First operand 275 states and 371 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:14,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:14,564 INFO L93 Difference]: Finished difference Result 670 states and 955 transitions. [2022-11-03 02:35:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:14,564 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:14,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:14,567 INFO L225 Difference]: With dead ends: 670 [2022-11-03 02:35:14,567 INFO L226 Difference]: Without dead ends: 521 [2022-11-03 02:35:14,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:14,568 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 529 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1434 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:14,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 1434 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 28 Unchecked, 0.2s Time] [2022-11-03 02:35:14,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-03 02:35:14,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 277. [2022-11-03 02:35:14,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.3514492753623188) internal successors, (373), 276 states have internal predecessors, (373), 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) [2022-11-03 02:35:14,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 373 transitions. [2022-11-03 02:35:14,577 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 373 transitions. Word has length 152 [2022-11-03 02:35:14,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:14,578 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 373 transitions. [2022-11-03 02:35:14,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:14,578 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 373 transitions. [2022-11-03 02:35:14,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:14,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:14,579 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:14,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:14,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:14,796 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:14,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:14,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1097956361, now seen corresponding path program 1 times [2022-11-03 02:35:14,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:14,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325020696] [2022-11-03 02:35:14,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:14,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:14,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:14,799 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:14,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:35:15,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:15,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:35:15,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:15,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:15,942 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:15,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325020696] [2022-11-03 02:35:15,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325020696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:15,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:15,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:15,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144264444] [2022-11-03 02:35:15,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:15,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:15,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:15,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:15,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:15,944 INFO L87 Difference]: Start difference. First operand 277 states and 373 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:16,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:16,343 INFO L93 Difference]: Finished difference Result 682 states and 972 transitions. [2022-11-03 02:35:16,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:16,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:16,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:16,347 INFO L225 Difference]: With dead ends: 682 [2022-11-03 02:35:16,347 INFO L226 Difference]: Without dead ends: 533 [2022-11-03 02:35:16,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:35:16,349 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 882 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 882 SdHoareTripleChecker+Valid, 1498 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:16,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [882 Valid, 1498 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:35:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-03 02:35:16,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 279. [2022-11-03 02:35:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 278 states have (on average 1.3489208633093526) internal successors, (375), 278 states have internal predecessors, (375), 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) [2022-11-03 02:35:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 375 transitions. [2022-11-03 02:35:16,357 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 375 transitions. Word has length 152 [2022-11-03 02:35:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:16,357 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 375 transitions. [2022-11-03 02:35:16,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 375 transitions. [2022-11-03 02:35:16,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:16,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:16,359 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:16,380 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:16,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:16,573 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:16,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:16,573 INFO L85 PathProgramCache]: Analyzing trace with hash 605330187, now seen corresponding path program 1 times [2022-11-03 02:35:16,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:16,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362936479] [2022-11-03 02:35:16,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:16,574 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:16,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:16,575 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:16,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:35:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:17,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:35:17,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:18,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:18,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:18,487 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:18,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362936479] [2022-11-03 02:35:18,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362936479] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:18,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:18,487 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:35:18,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650440432] [2022-11-03 02:35:18,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:18,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:35:18,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:18,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:35:18,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:18,489 INFO L87 Difference]: Start difference. First operand 279 states and 375 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:19,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:19,014 INFO L93 Difference]: Finished difference Result 722 states and 1031 transitions. [2022-11-03 02:35:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:35:19,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:19,019 INFO L225 Difference]: With dead ends: 722 [2022-11-03 02:35:19,019 INFO L226 Difference]: Without dead ends: 573 [2022-11-03 02:35:19,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:35:19,019 INFO L413 NwaCegarLoop]: 289 mSDtfsCounter, 806 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 806 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:19,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [806 Valid, 2017 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 114 Invalid, 0 Unknown, 173 Unchecked, 0.4s Time] [2022-11-03 02:35:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-11-03 02:35:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 283. [2022-11-03 02:35:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 282 states have (on average 1.3475177304964538) internal successors, (380), 282 states have internal predecessors, (380), 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) [2022-11-03 02:35:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 380 transitions. [2022-11-03 02:35:19,026 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 380 transitions. Word has length 152 [2022-11-03 02:35:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:19,026 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 380 transitions. [2022-11-03 02:35:19,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 380 transitions. [2022-11-03 02:35:19,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:19,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:19,028 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:19,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:19,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:19,234 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:19,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:19,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1080849651, now seen corresponding path program 1 times [2022-11-03 02:35:19,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:19,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071306593] [2022-11-03 02:35:19,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:19,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:19,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:19,238 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:19,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:35:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:19,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-03 02:35:19,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:21,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:21,651 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:21,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071306593] [2022-11-03 02:35:21,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071306593] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:21,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:21,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:35:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658335503] [2022-11-03 02:35:21,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:21,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:35:21,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:35:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:21,653 INFO L87 Difference]: Start difference. First operand 283 states and 380 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:22,228 INFO L93 Difference]: Finished difference Result 720 states and 1027 transitions. [2022-11-03 02:35:22,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:35:22,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:22,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:22,235 INFO L225 Difference]: With dead ends: 720 [2022-11-03 02:35:22,235 INFO L226 Difference]: Without dead ends: 571 [2022-11-03 02:35:22,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:35:22,236 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 777 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 157 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:22,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 2031 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 112 Invalid, 0 Unknown, 157 Unchecked, 0.4s Time] [2022-11-03 02:35:22,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-11-03 02:35:22,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 285. [2022-11-03 02:35:22,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 1.3450704225352113) internal successors, (382), 284 states have internal predecessors, (382), 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) [2022-11-03 02:35:22,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 382 transitions. [2022-11-03 02:35:22,243 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 382 transitions. Word has length 152 [2022-11-03 02:35:22,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:22,243 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 382 transitions. [2022-11-03 02:35:22,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:22,244 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 382 transitions. [2022-11-03 02:35:22,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:22,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:22,245 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:22,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:22,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:22,468 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:22,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:22,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1498246257, now seen corresponding path program 1 times [2022-11-03 02:35:22,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:22,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [412064570] [2022-11-03 02:35:22,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:22,469 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:22,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:22,471 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:22,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:35:22,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:22,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:35:22,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:23,122 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:23,122 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:23,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [412064570] [2022-11-03 02:35:23,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [412064570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:23,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:23,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:35:23,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537698579] [2022-11-03 02:35:23,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:23,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:35:23,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:23,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:35:23,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:23,124 INFO L87 Difference]: Start difference. First operand 285 states and 382 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:35:23,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:23,361 INFO L93 Difference]: Finished difference Result 646 states and 915 transitions. [2022-11-03 02:35:23,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:23,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:23,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:23,363 INFO L225 Difference]: With dead ends: 646 [2022-11-03 02:35:23,363 INFO L226 Difference]: Without dead ends: 497 [2022-11-03 02:35:23,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:23,364 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 593 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 593 SdHoareTripleChecker+Valid, 1131 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:23,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [593 Valid, 1131 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:35:23,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-03 02:35:23,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 289. [2022-11-03 02:35:23,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 288 states have (on average 1.34375) internal successors, (387), 288 states have internal predecessors, (387), 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) [2022-11-03 02:35:23,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 387 transitions. [2022-11-03 02:35:23,370 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 387 transitions. Word has length 152 [2022-11-03 02:35:23,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:23,370 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 387 transitions. [2022-11-03 02:35:23,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:35:23,370 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 387 transitions. [2022-11-03 02:35:23,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:23,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:23,371 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:23,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:23,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:23,572 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:23,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:23,572 INFO L85 PathProgramCache]: Analyzing trace with hash -937546479, now seen corresponding path program 1 times [2022-11-03 02:35:23,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:23,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [853134220] [2022-11-03 02:35:23,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:23,573 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:23,573 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:23,574 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:23,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:35:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:24,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 02:35:24,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:24,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:24,346 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:24,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [853134220] [2022-11-03 02:35:24,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [853134220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:24,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:24,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:24,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570465213] [2022-11-03 02:35:24,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:24,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:24,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:24,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:24,348 INFO L87 Difference]: Start difference. First operand 289 states and 387 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:24,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:24,567 INFO L93 Difference]: Finished difference Result 658 states and 932 transitions. [2022-11-03 02:35:24,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:24,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:24,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:24,570 INFO L225 Difference]: With dead ends: 658 [2022-11-03 02:35:24,570 INFO L226 Difference]: Without dead ends: 509 [2022-11-03 02:35:24,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:24,571 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 453 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:24,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 1461 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 25 Unchecked, 0.2s Time] [2022-11-03 02:35:24,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-03 02:35:24,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 291. [2022-11-03 02:35:24,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.3413793103448275) internal successors, (389), 290 states have internal predecessors, (389), 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) [2022-11-03 02:35:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 389 transitions. [2022-11-03 02:35:24,576 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 389 transitions. Word has length 152 [2022-11-03 02:35:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:24,577 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 389 transitions. [2022-11-03 02:35:24,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 389 transitions. [2022-11-03 02:35:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:24,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:24,578 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:24,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-03 02:35:24,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:24,790 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:24,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:24,791 INFO L85 PathProgramCache]: Analyzing trace with hash 323370771, now seen corresponding path program 1 times [2022-11-03 02:35:24,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:24,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228951187] [2022-11-03 02:35:24,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:24,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:24,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:24,792 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:24,794 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:35:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:25,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:35:25,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:25,756 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:25,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:25,756 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:25,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228951187] [2022-11-03 02:35:25,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228951187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:25,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:25,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:25,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797299654] [2022-11-03 02:35:25,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:25,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:25,757 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:25,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:25,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:25,758 INFO L87 Difference]: Start difference. First operand 291 states and 389 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:25,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:25,980 INFO L93 Difference]: Finished difference Result 670 states and 949 transitions. [2022-11-03 02:35:25,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:25,981 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:25,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:25,983 INFO L225 Difference]: With dead ends: 670 [2022-11-03 02:35:25,983 INFO L226 Difference]: Without dead ends: 521 [2022-11-03 02:35:25,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:25,984 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 483 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:25,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 1458 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2022-11-03 02:35:25,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-03 02:35:25,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 293. [2022-11-03 02:35:25,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 292 states have (on average 1.3390410958904109) internal successors, (391), 292 states have internal predecessors, (391), 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) [2022-11-03 02:35:25,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 391 transitions. [2022-11-03 02:35:25,990 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 391 transitions. Word has length 152 [2022-11-03 02:35:25,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:25,991 INFO L495 AbstractCegarLoop]: Abstraction has 293 states and 391 transitions. [2022-11-03 02:35:25,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:25,991 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 391 transitions. [2022-11-03 02:35:25,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:25,992 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:25,992 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:26,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:26,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:26,213 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1710156181, now seen corresponding path program 1 times [2022-11-03 02:35:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808542856] [2022-11-03 02:35:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:26,214 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:26,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:26,215 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:26,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:35:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:26,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:35:26,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:27,222 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:27,222 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:27,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808542856] [2022-11-03 02:35:27,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808542856] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:27,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:27,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:27,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430430429] [2022-11-03 02:35:27,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:27,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:27,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:27,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:27,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:27,224 INFO L87 Difference]: Start difference. First operand 293 states and 391 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:27,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:27,642 INFO L93 Difference]: Finished difference Result 682 states and 966 transitions. [2022-11-03 02:35:27,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:27,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:27,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:27,646 INFO L225 Difference]: With dead ends: 682 [2022-11-03 02:35:27,646 INFO L226 Difference]: Without dead ends: 533 [2022-11-03 02:35:27,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:35:27,647 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 824 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:27,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [824 Valid, 1443 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:35:27,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-03 02:35:27,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 295. [2022-11-03 02:35:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 294 states have (on average 1.336734693877551) internal successors, (393), 294 states have internal predecessors, (393), 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) [2022-11-03 02:35:27,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 393 transitions. [2022-11-03 02:35:27,652 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 393 transitions. Word has length 152 [2022-11-03 02:35:27,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:27,653 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 393 transitions. [2022-11-03 02:35:27,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:27,653 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 393 transitions. [2022-11-03 02:35:27,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:27,653 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:27,654 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:27,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:27,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:27,854 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:27,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:27,857 INFO L85 PathProgramCache]: Analyzing trace with hash -2140910441, now seen corresponding path program 1 times [2022-11-03 02:35:27,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:27,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198338314] [2022-11-03 02:35:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:27,858 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:27,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:27,859 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:27,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:35:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:28,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-03 02:35:28,336 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:29,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:29,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:29,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198338314] [2022-11-03 02:35:29,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198338314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:29,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:29,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:35:29,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491278428] [2022-11-03 02:35:29,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:29,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:35:29,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:29,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:35:29,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:29,565 INFO L87 Difference]: Start difference. First operand 295 states and 393 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:30,466 INFO L93 Difference]: Finished difference Result 740 states and 1052 transitions. [2022-11-03 02:35:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:35:30,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:30,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:30,471 INFO L225 Difference]: With dead ends: 740 [2022-11-03 02:35:30,471 INFO L226 Difference]: Without dead ends: 591 [2022-11-03 02:35:30,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:35:30,472 INFO L413 NwaCegarLoop]: 301 mSDtfsCounter, 1201 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1201 SdHoareTripleChecker+Valid, 2090 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:30,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1201 Valid, 2090 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-03 02:35:30,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2022-11-03 02:35:30,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 297. [2022-11-03 02:35:30,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 1.3344594594594594) internal successors, (395), 296 states have internal predecessors, (395), 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) [2022-11-03 02:35:30,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 395 transitions. [2022-11-03 02:35:30,480 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 395 transitions. Word has length 152 [2022-11-03 02:35:30,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:30,485 INFO L495 AbstractCegarLoop]: Abstraction has 297 states and 395 transitions. [2022-11-03 02:35:30,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 395 transitions. [2022-11-03 02:35:30,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:30,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:30,488 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:30,510 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:30,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:30,710 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:30,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:30,711 INFO L85 PathProgramCache]: Analyzing trace with hash 125470745, now seen corresponding path program 1 times [2022-11-03 02:35:30,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:30,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855332524] [2022-11-03 02:35:30,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:30,712 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:30,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:30,714 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:30,720 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:35:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:31,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:35:31,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:32,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:32,863 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:32,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855332524] [2022-11-03 02:35:32,863 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855332524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:32,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:32,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:35:32,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346205975] [2022-11-03 02:35:32,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:32,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:35:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:32,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:35:32,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:32,865 INFO L87 Difference]: Start difference. First operand 297 states and 395 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:33,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:33,386 INFO L93 Difference]: Finished difference Result 736 states and 1045 transitions. [2022-11-03 02:35:33,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:35:33,391 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:33,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:33,392 INFO L225 Difference]: With dead ends: 736 [2022-11-03 02:35:33,392 INFO L226 Difference]: Without dead ends: 587 [2022-11-03 02:35:33,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:35:33,393 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 755 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 755 SdHoareTripleChecker+Valid, 2071 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 129 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:33,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [755 Valid, 2071 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 104 Invalid, 0 Unknown, 129 Unchecked, 0.4s Time] [2022-11-03 02:35:33,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2022-11-03 02:35:33,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 301. [2022-11-03 02:35:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 300 states have (on average 1.3333333333333333) internal successors, (400), 300 states have internal predecessors, (400), 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) [2022-11-03 02:35:33,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 400 transitions. [2022-11-03 02:35:33,401 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 400 transitions. Word has length 152 [2022-11-03 02:35:33,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:33,401 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 400 transitions. [2022-11-03 02:35:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:33,402 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 400 transitions. [2022-11-03 02:35:33,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:33,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:33,403 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:33,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-03 02:35:33,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:33,606 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:33,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash -227617637, now seen corresponding path program 1 times [2022-11-03 02:35:33,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:33,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [811944720] [2022-11-03 02:35:33,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:33,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:33,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:33,609 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:33,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:35:34,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:34,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:35:34,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:35,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:35,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:35,742 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:35,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [811944720] [2022-11-03 02:35:35,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [811944720] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:35,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:35,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:35,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663671918] [2022-11-03 02:35:35,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:35,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:35,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:35,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:35,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:35,745 INFO L87 Difference]: Start difference. First operand 301 states and 400 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:36,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:36,037 INFO L93 Difference]: Finished difference Result 734 states and 1041 transitions. [2022-11-03 02:35:36,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:36,038 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:36,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:36,039 INFO L225 Difference]: With dead ends: 734 [2022-11-03 02:35:36,039 INFO L226 Difference]: Without dead ends: 585 [2022-11-03 02:35:36,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:36,040 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 634 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 634 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:36,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [634 Valid, 1458 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-11-03 02:35:36,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-03 02:35:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 303. [2022-11-03 02:35:36,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.3311258278145695) internal successors, (402), 302 states have internal predecessors, (402), 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) [2022-11-03 02:35:36,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 402 transitions. [2022-11-03 02:35:36,048 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 402 transitions. Word has length 152 [2022-11-03 02:35:36,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:36,048 INFO L495 AbstractCegarLoop]: Abstraction has 303 states and 402 transitions. [2022-11-03 02:35:36,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:36,048 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 402 transitions. [2022-11-03 02:35:36,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:36,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:36,049 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:36,071 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 02:35:36,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:36,250 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:36,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:36,250 INFO L85 PathProgramCache]: Analyzing trace with hash 665868701, now seen corresponding path program 1 times [2022-11-03 02:35:36,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:36,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1361390532] [2022-11-03 02:35:36,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:36,251 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:36,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:36,252 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:36,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 02:35:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:36,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:35:36,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:36,960 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:36,961 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:36,961 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:36,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1361390532] [2022-11-03 02:35:36,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1361390532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:36,961 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:36,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:35:36,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333287970] [2022-11-03 02:35:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:36,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:35:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:36,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:35:36,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:36,963 INFO L87 Difference]: Start difference. First operand 303 states and 402 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:35:37,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:37,256 INFO L93 Difference]: Finished difference Result 646 states and 908 transitions. [2022-11-03 02:35:37,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:37,259 INFO L225 Difference]: With dead ends: 646 [2022-11-03 02:35:37,259 INFO L226 Difference]: Without dead ends: 497 [2022-11-03 02:35:37,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:37,260 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 539 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 539 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:37,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [539 Valid, 1097 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:35:37,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 497 states. [2022-11-03 02:35:37,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 497 to 305. [2022-11-03 02:35:37,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 304 states have (on average 1.3289473684210527) internal successors, (404), 304 states have internal predecessors, (404), 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) [2022-11-03 02:35:37,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 404 transitions. [2022-11-03 02:35:37,270 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 404 transitions. Word has length 152 [2022-11-03 02:35:37,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:37,270 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 404 transitions. [2022-11-03 02:35:37,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:35:37,271 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 404 transitions. [2022-11-03 02:35:37,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:37,271 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:37,271 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:37,284 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:37,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:37,472 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:37,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:37,472 INFO L85 PathProgramCache]: Analyzing trace with hash -231524577, now seen corresponding path program 1 times [2022-11-03 02:35:37,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:37,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080588168] [2022-11-03 02:35:37,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:37,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:37,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:37,475 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:37,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:35:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:37,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 02:35:37,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:38,423 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:38,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:38,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:38,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080588168] [2022-11-03 02:35:38,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080588168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:38,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:38,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:38,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092149886] [2022-11-03 02:35:38,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:38,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:38,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:38,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:38,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:38,425 INFO L87 Difference]: Start difference. First operand 305 states and 404 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:38,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:38,662 INFO L93 Difference]: Finished difference Result 658 states and 925 transitions. [2022-11-03 02:35:38,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:38,662 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:38,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:38,663 INFO L225 Difference]: With dead ends: 658 [2022-11-03 02:35:38,663 INFO L226 Difference]: Without dead ends: 509 [2022-11-03 02:35:38,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:38,664 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 406 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1488 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:38,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1488 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 27 Unchecked, 0.2s Time] [2022-11-03 02:35:38,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-03 02:35:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 307. [2022-11-03 02:35:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 1.326797385620915) internal successors, (406), 306 states have internal predecessors, (406), 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) [2022-11-03 02:35:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 406 transitions. [2022-11-03 02:35:38,671 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 406 transitions. Word has length 152 [2022-11-03 02:35:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:38,671 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 406 transitions. [2022-11-03 02:35:38,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:38,671 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 406 transitions. [2022-11-03 02:35:38,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:38,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:38,672 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:38,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:38,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:38,873 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:38,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:38,873 INFO L85 PathProgramCache]: Analyzing trace with hash 192122145, now seen corresponding path program 1 times [2022-11-03 02:35:38,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:38,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [632571929] [2022-11-03 02:35:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:38,875 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:38,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:38,876 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:38,902 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 02:35:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:39,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:35:39,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:39,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:39,891 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:39,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [632571929] [2022-11-03 02:35:39,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [632571929] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:39,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:39,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:39,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554121592] [2022-11-03 02:35:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:39,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:39,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:39,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:39,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:39,893 INFO L87 Difference]: Start difference. First operand 307 states and 406 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:40,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:40,104 INFO L93 Difference]: Finished difference Result 670 states and 942 transitions. [2022-11-03 02:35:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:40,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:40,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:40,108 INFO L225 Difference]: With dead ends: 670 [2022-11-03 02:35:40,108 INFO L226 Difference]: Without dead ends: 521 [2022-11-03 02:35:40,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:40,108 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 436 mSDsluCounter, 1145 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:40,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1490 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 32 Unchecked, 0.2s Time] [2022-11-03 02:35:40,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-03 02:35:40,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 309. [2022-11-03 02:35:40,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 308 states have (on average 1.3246753246753247) internal successors, (408), 308 states have internal predecessors, (408), 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) [2022-11-03 02:35:40,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 408 transitions. [2022-11-03 02:35:40,114 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 408 transitions. Word has length 152 [2022-11-03 02:35:40,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:40,115 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 408 transitions. [2022-11-03 02:35:40,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:40,115 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 408 transitions. [2022-11-03 02:35:40,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:40,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:40,116 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:40,137 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:40,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:40,337 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:40,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:40,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1653245021, now seen corresponding path program 1 times [2022-11-03 02:35:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:40,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [326280559] [2022-11-03 02:35:40,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:40,338 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:40,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:40,339 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:40,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 02:35:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:40,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:35:40,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:41,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:41,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:41,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:41,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [326280559] [2022-11-03 02:35:41,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [326280559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:41,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:41,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:41,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837359055] [2022-11-03 02:35:41,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:41,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:41,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:41,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:41,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:41,396 INFO L87 Difference]: Start difference. First operand 309 states and 408 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:41,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:41,800 INFO L93 Difference]: Finished difference Result 682 states and 959 transitions. [2022-11-03 02:35:41,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:41,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:41,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:41,803 INFO L225 Difference]: With dead ends: 682 [2022-11-03 02:35:41,803 INFO L226 Difference]: Without dead ends: 533 [2022-11-03 02:35:41,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:35:41,805 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 763 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:41,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [763 Valid, 1391 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:35:41,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-03 02:35:41,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 311. [2022-11-03 02:35:41,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 310 states have (on average 1.3225806451612903) internal successors, (410), 310 states have internal predecessors, (410), 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) [2022-11-03 02:35:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 410 transitions. [2022-11-03 02:35:41,812 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 410 transitions. Word has length 152 [2022-11-03 02:35:41,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:41,813 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 410 transitions. [2022-11-03 02:35:41,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:41,813 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 410 transitions. [2022-11-03 02:35:41,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:41,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:41,814 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:41,834 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-03 02:35:42,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:42,034 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:42,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:42,034 INFO L85 PathProgramCache]: Analyzing trace with hash -993713499, now seen corresponding path program 1 times [2022-11-03 02:35:42,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:42,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [554944343] [2022-11-03 02:35:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:42,036 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:42,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:42,037 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:42,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:35:42,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:42,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:35:42,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:44,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:44,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:44,264 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:44,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [554944343] [2022-11-03 02:35:44,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [554944343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:44,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:44,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:35:44,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214888865] [2022-11-03 02:35:44,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:44,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:35:44,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:44,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:35:44,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:44,266 INFO L87 Difference]: Start difference. First operand 311 states and 410 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:44,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:44,706 INFO L93 Difference]: Finished difference Result 754 states and 1066 transitions. [2022-11-03 02:35:44,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 02:35:44,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:44,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:44,710 INFO L225 Difference]: With dead ends: 754 [2022-11-03 02:35:44,710 INFO L226 Difference]: Without dead ends: 605 [2022-11-03 02:35:44,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:35:44,710 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 761 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:44,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 2115 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 150 Unchecked, 0.3s Time] [2022-11-03 02:35:44,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2022-11-03 02:35:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 315. [2022-11-03 02:35:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 1.321656050955414) internal successors, (415), 314 states have internal predecessors, (415), 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) [2022-11-03 02:35:44,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 415 transitions. [2022-11-03 02:35:44,715 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 415 transitions. Word has length 152 [2022-11-03 02:35:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:44,716 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 415 transitions. [2022-11-03 02:35:44,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:44,716 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 415 transitions. [2022-11-03 02:35:44,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:44,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:44,717 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:44,733 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-03 02:35:44,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:44,918 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:44,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1066100057, now seen corresponding path program 1 times [2022-11-03 02:35:44,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:44,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1371934559] [2022-11-03 02:35:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:44,919 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:44,919 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:44,920 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:44,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 02:35:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:45,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 02:35:45,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:47,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:47,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:47,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:47,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1371934559] [2022-11-03 02:35:47,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1371934559] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:47,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:47,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:35:47,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717827651] [2022-11-03 02:35:47,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:47,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:35:47,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:47,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:35:47,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:47,585 INFO L87 Difference]: Start difference. First operand 315 states and 415 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:48,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:48,166 INFO L93 Difference]: Finished difference Result 752 states and 1062 transitions. [2022-11-03 02:35:48,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:35:48,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:48,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:48,172 INFO L225 Difference]: With dead ends: 752 [2022-11-03 02:35:48,172 INFO L226 Difference]: Without dead ends: 603 [2022-11-03 02:35:48,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:35:48,172 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 732 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 2111 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 146 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:48,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 2111 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 95 Invalid, 0 Unknown, 146 Unchecked, 0.3s Time] [2022-11-03 02:35:48,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-11-03 02:35:48,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 317. [2022-11-03 02:35:48,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 316 states have (on average 1.3196202531645569) internal successors, (417), 316 states have internal predecessors, (417), 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) [2022-11-03 02:35:48,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 417 transitions. [2022-11-03 02:35:48,178 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 417 transitions. Word has length 152 [2022-11-03 02:35:48,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:48,179 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 417 transitions. [2022-11-03 02:35:48,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:35:48,179 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 417 transitions. [2022-11-03 02:35:48,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:48,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:48,179 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:48,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:48,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:48,380 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:48,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:48,380 INFO L85 PathProgramCache]: Analyzing trace with hash -364500183, now seen corresponding path program 1 times [2022-11-03 02:35:48,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:48,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848778256] [2022-11-03 02:35:48,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:48,381 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:48,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:48,382 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:48,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 02:35:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:48,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-03 02:35:48,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:50,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:50,507 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:50,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848778256] [2022-11-03 02:35:50,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848778256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:50,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:50,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86609306] [2022-11-03 02:35:50,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:50,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:50,509 INFO L87 Difference]: Start difference. First operand 317 states and 417 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:50,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:50,777 INFO L93 Difference]: Finished difference Result 750 states and 1058 transitions. [2022-11-03 02:35:50,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:35:50,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:50,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:50,779 INFO L225 Difference]: With dead ends: 750 [2022-11-03 02:35:50,779 INFO L226 Difference]: Without dead ends: 601 [2022-11-03 02:35:50,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:35:50,780 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 647 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 647 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:50,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [647 Valid, 1444 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2022-11-03 02:35:50,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-03 02:35:50,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 319. [2022-11-03 02:35:50,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.3176100628930818) internal successors, (419), 318 states have internal predecessors, (419), 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) [2022-11-03 02:35:50,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 419 transitions. [2022-11-03 02:35:50,786 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 419 transitions. Word has length 152 [2022-11-03 02:35:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:50,787 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 419 transitions. [2022-11-03 02:35:50,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:50,787 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 419 transitions. [2022-11-03 02:35:50,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:50,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:50,788 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:50,809 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-03 02:35:51,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:51,002 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:51,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:51,003 INFO L85 PathProgramCache]: Analyzing trace with hash 1021703211, now seen corresponding path program 1 times [2022-11-03 02:35:51,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:51,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086060066] [2022-11-03 02:35:51,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:51,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:51,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:51,005 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:51,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 02:35:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:51,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:35:51,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:52,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:52,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:52,798 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:52,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086060066] [2022-11-03 02:35:52,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086060066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:52,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:52,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:35:52,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803423621] [2022-11-03 02:35:52,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:52,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:35:52,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:52,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:35:52,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:35:52,800 INFO L87 Difference]: Start difference. First operand 319 states and 419 transitions. Second operand has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:35:52,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:52,988 INFO L93 Difference]: Finished difference Result 618 states and 862 transitions. [2022-11-03 02:35:52,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:35:52,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:52,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:52,990 INFO L225 Difference]: With dead ends: 618 [2022-11-03 02:35:52,990 INFO L226 Difference]: Without dead ends: 469 [2022-11-03 02:35:52,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:52,991 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 250 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1122 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:52,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1122 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 17 Unchecked, 0.1s Time] [2022-11-03 02:35:52,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 469 states. [2022-11-03 02:35:52,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 469 to 321. [2022-11-03 02:35:52,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 320 states have (on average 1.315625) internal successors, (421), 320 states have internal predecessors, (421), 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) [2022-11-03 02:35:52,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 421 transitions. [2022-11-03 02:35:52,997 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 421 transitions. Word has length 152 [2022-11-03 02:35:52,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:52,997 INFO L495 AbstractCegarLoop]: Abstraction has 321 states and 421 transitions. [2022-11-03 02:35:52,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.4) internal successors, (152), 5 states have internal predecessors, (152), 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) [2022-11-03 02:35:52,998 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 421 transitions. [2022-11-03 02:35:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:52,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:52,999 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:53,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:53,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:53,218 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:53,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:53,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1350036051, now seen corresponding path program 1 times [2022-11-03 02:35:53,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:53,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [938132282] [2022-11-03 02:35:53,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:53,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:53,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:53,220 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:53,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 02:35:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:53,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:35:53,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:54,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:54,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:54,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:54,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [938132282] [2022-11-03 02:35:54,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [938132282] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:54,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:54,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:54,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033793104] [2022-11-03 02:35:54,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:54,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:54,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:54,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:54,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:54,515 INFO L87 Difference]: Start difference. First operand 321 states and 421 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:54,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:54,947 INFO L93 Difference]: Finished difference Result 658 states and 918 transitions. [2022-11-03 02:35:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:54,950 INFO L225 Difference]: With dead ends: 658 [2022-11-03 02:35:54,950 INFO L226 Difference]: Without dead ends: 509 [2022-11-03 02:35:54,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:35:54,951 INFO L413 NwaCegarLoop]: 350 mSDtfsCounter, 673 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1305 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:54,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [673 Valid, 1305 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:35:54,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 509 states. [2022-11-03 02:35:54,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 509 to 323. [2022-11-03 02:35:54,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 1.313664596273292) internal successors, (423), 322 states have internal predecessors, (423), 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) [2022-11-03 02:35:54,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 423 transitions. [2022-11-03 02:35:54,958 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 423 transitions. Word has length 152 [2022-11-03 02:35:54,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:54,958 INFO L495 AbstractCegarLoop]: Abstraction has 323 states and 423 transitions. [2022-11-03 02:35:54,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:54,959 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 423 transitions. [2022-11-03 02:35:54,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:54,960 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:54,960 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:54,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:55,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:55,162 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:55,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:55,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1209487441, now seen corresponding path program 1 times [2022-11-03 02:35:55,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:55,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867664775] [2022-11-03 02:35:55,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:55,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:55,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:55,164 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:55,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 02:35:55,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:55,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-03 02:35:55,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:57,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:57,198 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867664775] [2022-11-03 02:35:57,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867664775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:57,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:57,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:57,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656477101] [2022-11-03 02:35:57,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:57,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:57,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:57,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:57,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:57,200 INFO L87 Difference]: Start difference. First operand 323 states and 423 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:57,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:57,408 INFO L93 Difference]: Finished difference Result 622 states and 866 transitions. [2022-11-03 02:35:57,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:35:57,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:57,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:57,410 INFO L225 Difference]: With dead ends: 622 [2022-11-03 02:35:57,410 INFO L226 Difference]: Without dead ends: 473 [2022-11-03 02:35:57,411 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:35:57,411 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 250 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:57,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1466 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 56 Unchecked, 0.2s Time] [2022-11-03 02:35:57,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2022-11-03 02:35:57,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 325. [2022-11-03 02:35:57,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 1.3117283950617284) internal successors, (425), 324 states have internal predecessors, (425), 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) [2022-11-03 02:35:57,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 425 transitions. [2022-11-03 02:35:57,417 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 425 transitions. Word has length 152 [2022-11-03 02:35:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:57,418 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 425 transitions. [2022-11-03 02:35:57,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:57,418 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 425 transitions. [2022-11-03 02:35:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:57,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:57,419 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:57,436 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Ended with exit code 0 [2022-11-03 02:35:57,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:57,630 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:57,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:57,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1280041521, now seen corresponding path program 1 times [2022-11-03 02:35:57,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:57,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1833674348] [2022-11-03 02:35:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:57,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:57,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:57,633 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:57,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 02:35:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:35:58,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-03 02:35:58,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:35:58,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:35:58,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:35:58,951 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:35:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1833674348] [2022-11-03 02:35:58,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1833674348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:35:58,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:35:58,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:35:58,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440875293] [2022-11-03 02:35:58,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:35:58,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:35:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:35:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:35:58,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:35:58,952 INFO L87 Difference]: Start difference. First operand 325 states and 425 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:59,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:35:59,380 INFO L93 Difference]: Finished difference Result 682 states and 952 transitions. [2022-11-03 02:35:59,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:35:59,382 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:35:59,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:35:59,384 INFO L225 Difference]: With dead ends: 682 [2022-11-03 02:35:59,384 INFO L226 Difference]: Without dead ends: 533 [2022-11-03 02:35:59,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:35:59,384 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 702 mSDsluCounter, 971 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:35:59,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 1323 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:35:59,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2022-11-03 02:35:59,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 327. [2022-11-03 02:35:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.3098159509202454) internal successors, (427), 326 states have internal predecessors, (427), 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) [2022-11-03 02:35:59,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 427 transitions. [2022-11-03 02:35:59,404 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 427 transitions. Word has length 152 [2022-11-03 02:35:59,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:35:59,405 INFO L495 AbstractCegarLoop]: Abstraction has 327 states and 427 transitions. [2022-11-03 02:35:59,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:35:59,405 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 427 transitions. [2022-11-03 02:35:59,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:35:59,405 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:35:59,406 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:35:59,428 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 02:35:59,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:35:59,606 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:35:59,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:35:59,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1702743347, now seen corresponding path program 1 times [2022-11-03 02:35:59,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:35:59,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674734107] [2022-11-03 02:35:59,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:35:59,608 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:35:59,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:35:59,608 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:35:59,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 02:36:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:00,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:36:00,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:00,835 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:00,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:00,835 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:00,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674734107] [2022-11-03 02:36:00,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674734107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:00,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:00,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:36:00,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144589054] [2022-11-03 02:36:00,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:00,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:36:00,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:00,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:36:00,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:36:00,838 INFO L87 Difference]: Start difference. First operand 327 states and 427 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:36:01,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:01,084 INFO L93 Difference]: Finished difference Result 542 states and 721 transitions. [2022-11-03 02:36:01,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:36:01,085 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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 152 [2022-11-03 02:36:01,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:01,088 INFO L225 Difference]: With dead ends: 542 [2022-11-03 02:36:01,088 INFO L226 Difference]: Without dead ends: 393 [2022-11-03 02:36:01,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:36:01,089 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 80 mSDsluCounter, 1343 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:01,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 1536 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 76 Unchecked, 0.2s Time] [2022-11-03 02:36:01,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-03 02:36:01,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-11-03 02:36:01,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 392 states have (on average 1.2729591836734695) internal successors, (499), 392 states have internal predecessors, (499), 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) [2022-11-03 02:36:01,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 499 transitions. [2022-11-03 02:36:01,095 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 499 transitions. Word has length 152 [2022-11-03 02:36:01,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:01,096 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 499 transitions. [2022-11-03 02:36:01,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:36:01,097 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 499 transitions. [2022-11-03 02:36:01,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:36:01,098 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:01,098 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:01,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:01,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:01,312 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:01,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash 13799605, now seen corresponding path program 1 times [2022-11-03 02:36:01,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:01,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1606291364] [2022-11-03 02:36:01,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:01,314 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:01,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:01,315 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:01,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 02:36:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:01,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-03 02:36:01,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:03,535 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:03,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:03,535 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:03,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1606291364] [2022-11-03 02:36:03,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1606291364] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:03,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:03,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:36:03,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454825393] [2022-11-03 02:36:03,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:03,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:36:03,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:03,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:36:03,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:03,537 INFO L87 Difference]: Start difference. First operand 393 states and 499 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:36:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:05,474 INFO L93 Difference]: Finished difference Result 834 states and 1152 transitions. [2022-11-03 02:36:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:36:05,478 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:36:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:05,481 INFO L225 Difference]: With dead ends: 834 [2022-11-03 02:36:05,481 INFO L226 Difference]: Without dead ends: 685 [2022-11-03 02:36:05,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:36:05,482 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 1052 mSDsluCounter, 1576 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:05,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 1920 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-03 02:36:05,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2022-11-03 02:36:05,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 399. [2022-11-03 02:36:05,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.2738693467336684) internal successors, (507), 398 states have internal predecessors, (507), 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) [2022-11-03 02:36:05,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 507 transitions. [2022-11-03 02:36:05,490 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 507 transitions. Word has length 152 [2022-11-03 02:36:05,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:05,491 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 507 transitions. [2022-11-03 02:36:05,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:36:05,491 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 507 transitions. [2022-11-03 02:36:05,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:36:05,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:05,492 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:05,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-03 02:36:05,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:05,706 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:05,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1266064073, now seen corresponding path program 1 times [2022-11-03 02:36:05,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:05,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486482706] [2022-11-03 02:36:05,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:05,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:05,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:05,709 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:05,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 02:36:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:06,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-03 02:36:06,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:08,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:08,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:08,709 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:08,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486482706] [2022-11-03 02:36:08,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486482706] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:08,710 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:08,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:36:08,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599176240] [2022-11-03 02:36:08,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:08,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:36:08,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:08,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:36:08,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:36:08,711 INFO L87 Difference]: Start difference. First operand 399 states and 507 transitions. Second operand has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:36:09,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:09,020 INFO L93 Difference]: Finished difference Result 832 states and 1148 transitions. [2022-11-03 02:36:09,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:36:09,020 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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 152 [2022-11-03 02:36:09,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:09,022 INFO L225 Difference]: With dead ends: 832 [2022-11-03 02:36:09,023 INFO L226 Difference]: Without dead ends: 683 [2022-11-03 02:36:09,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:36:09,024 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 649 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 649 SdHoareTripleChecker+Valid, 1502 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:09,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [649 Valid, 1502 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 55 Unchecked, 0.2s Time] [2022-11-03 02:36:09,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-11-03 02:36:09,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 401. [2022-11-03 02:36:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 400 states have (on average 1.2725) internal successors, (509), 400 states have internal predecessors, (509), 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) [2022-11-03 02:36:09,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 509 transitions. [2022-11-03 02:36:09,032 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 509 transitions. Word has length 152 [2022-11-03 02:36:09,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:09,032 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 509 transitions. [2022-11-03 02:36:09,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.333333333333332) internal successors, (152), 6 states have internal predecessors, (152), 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) [2022-11-03 02:36:09,033 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 509 transitions. [2022-11-03 02:36:09,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:36:09,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:09,034 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:09,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 02:36:09,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:09,246 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:09,247 INFO L85 PathProgramCache]: Analyzing trace with hash -1852870087, now seen corresponding path program 1 times [2022-11-03 02:36:09,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:09,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [436188514] [2022-11-03 02:36:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:09,248 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:09,248 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:09,249 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:09,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 02:36:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:09,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:36:09,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:10,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:10,711 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:36:10,711 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:10,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [436188514] [2022-11-03 02:36:10,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [436188514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:36:10,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:36:10,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:36:10,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845281546] [2022-11-03 02:36:10,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:36:10,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:36:10,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:36:10,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:36:10,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:36:10,714 INFO L87 Difference]: Start difference. First operand 401 states and 509 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:36:10,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:36:10,808 INFO L93 Difference]: Finished difference Result 558 states and 740 transitions. [2022-11-03 02:36:10,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:36:10,809 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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 152 [2022-11-03 02:36:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:36:10,810 INFO L225 Difference]: With dead ends: 558 [2022-11-03 02:36:10,810 INFO L226 Difference]: Without dead ends: 409 [2022-11-03 02:36:10,810 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:36:10,811 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 18 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1413 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 75 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:36:10,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1413 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 75 Unchecked, 0.1s Time] [2022-11-03 02:36:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-11-03 02:36:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2022-11-03 02:36:10,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 408 states have (on average 1.2696078431372548) internal successors, (518), 408 states have internal predecessors, (518), 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) [2022-11-03 02:36:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 518 transitions. [2022-11-03 02:36:10,818 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 518 transitions. Word has length 152 [2022-11-03 02:36:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:36:10,818 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 518 transitions. [2022-11-03 02:36:10,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:36:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 518 transitions. [2022-11-03 02:36:10,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:36:10,819 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:36:10,820 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:36:10,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-11-03 02:36:11,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:36:11,030 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:36:11,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:36:11,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1151805509, now seen corresponding path program 1 times [2022-11-03 02:36:11,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:36:11,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698228403] [2022-11-03 02:36:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:11,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:36:11,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:36:11,033 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:36:11,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 02:36:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:11,515 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:36:11,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:12,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:36:34,293 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:34,294 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:36:34,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698228403] [2022-11-03 02:36:34,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698228403] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:36:34,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1575945292] [2022-11-03 02:36:34,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:36:34,295 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:36:34,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:36:34,302 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:36:34,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2022-11-03 02:36:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:36:35,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:36:35,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:36:36,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:36:36,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:10,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:10,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1575945292] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:10,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1650186529] [2022-11-03 02:38:10,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:10,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:38:10,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:38:10,035 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:38:10,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-11-03 02:38:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:10,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:38:10,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:12,822 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:12,822 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:38:30,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:30,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1650186529] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:38:30,981 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:38:30,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 40 [2022-11-03 02:38:30,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289361647] [2022-11-03 02:38:30,981 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:38:30,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-03 02:38:30,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:30,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-03 02:38:30,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1274, Unknown=60, NotChecked=0, Total=1560 [2022-11-03 02:38:30,984 INFO L87 Difference]: Start difference. First operand 409 states and 518 transitions. Second operand has 40 states, 40 states have (on average 18.625) internal successors, (745), 40 states have internal predecessors, (745), 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) [2022-11-03 02:38:32,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:32,167 INFO L93 Difference]: Finished difference Result 724 states and 923 transitions. [2022-11-03 02:38:32,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:38:32,168 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 18.625) internal successors, (745), 40 states have internal predecessors, (745), 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 152 [2022-11-03 02:38:32,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:32,170 INFO L225 Difference]: With dead ends: 724 [2022-11-03 02:38:32,170 INFO L226 Difference]: Without dead ends: 722 [2022-11-03 02:38:32,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 867 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 128.4s TimeCoverageRelationStatistics Valid=423, Invalid=1967, Unknown=60, NotChecked=0, Total=2450 [2022-11-03 02:38:32,172 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 1306 mSDsluCounter, 4276 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1306 SdHoareTripleChecker+Valid, 4460 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 54 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:32,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1306 Valid, 4460 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 54 Unchecked, 0.0s Time] [2022-11-03 02:38:32,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2022-11-03 02:38:32,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 722. [2022-11-03 02:38:32,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 1.2773925104022192) internal successors, (921), 721 states have internal predecessors, (921), 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) [2022-11-03 02:38:32,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 921 transitions. [2022-11-03 02:38:32,183 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 921 transitions. Word has length 152 [2022-11-03 02:38:32,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:32,184 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 921 transitions. [2022-11-03 02:38:32,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 18.625) internal successors, (745), 40 states have internal predecessors, (745), 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) [2022-11-03 02:38:32,184 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 921 transitions. [2022-11-03 02:38:32,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:38:32,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:32,186 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:32,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-03 02:38:32,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:32,609 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (57)] Ended with exit code 0 [2022-11-03 02:38:32,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:38:32,803 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:32,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:32,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1149958467, now seen corresponding path program 1 times [2022-11-03 02:38:32,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:32,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284992544] [2022-11-03 02:38:32,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:32,804 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:32,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:32,805 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:32,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 02:38:33,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:33,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:38:33,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:33,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:33,906 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:33,906 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:33,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284992544] [2022-11-03 02:38:33,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284992544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:33,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:33,907 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:38:33,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570610776] [2022-11-03 02:38:33,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:33,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:38:33,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:33,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:38:33,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:38:33,910 INFO L87 Difference]: Start difference. First operand 722 states and 921 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2022-11-03 02:38:34,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:34,095 INFO L93 Difference]: Finished difference Result 1235 states and 1551 transitions. [2022-11-03 02:38:34,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:38:34,096 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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 152 [2022-11-03 02:38:34,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:34,102 INFO L225 Difference]: With dead ends: 1235 [2022-11-03 02:38:34,102 INFO L226 Difference]: Without dead ends: 1086 [2022-11-03 02:38:34,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:38:34,103 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 35 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 1235 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 49 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:34,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 1235 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 49 Unchecked, 0.2s Time] [2022-11-03 02:38:34,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086 states. [2022-11-03 02:38:34,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086 to 1086. [2022-11-03 02:38:34,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1086 states, 1085 states have (on average 1.223963133640553) internal successors, (1328), 1085 states have internal predecessors, (1328), 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) [2022-11-03 02:38:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1086 states to 1086 states and 1328 transitions. [2022-11-03 02:38:34,129 INFO L78 Accepts]: Start accepts. Automaton has 1086 states and 1328 transitions. Word has length 152 [2022-11-03 02:38:34,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:34,130 INFO L495 AbstractCegarLoop]: Abstraction has 1086 states and 1328 transitions. [2022-11-03 02:38:34,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2022-11-03 02:38:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 1086 states and 1328 transitions. [2022-11-03 02:38:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:38:34,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:34,133 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:34,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:34,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:38:34,350 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:34,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:34,350 INFO L85 PathProgramCache]: Analyzing trace with hash 623201853, now seen corresponding path program 1 times [2022-11-03 02:38:34,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:34,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2019569214] [2022-11-03 02:38:34,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:34,352 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:34,352 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:34,353 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:34,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 02:38:34,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:34,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:38:34,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:35,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:35,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:35,471 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:35,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2019569214] [2022-11-03 02:38:35,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2019569214] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:35,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:35,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:38:35,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105654226] [2022-11-03 02:38:35,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:35,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:38:35,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:35,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:38:35,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:38:35,474 INFO L87 Difference]: Start difference. First operand 1086 states and 1328 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2022-11-03 02:38:35,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:35,666 INFO L93 Difference]: Finished difference Result 1583 states and 1944 transitions. [2022-11-03 02:38:35,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:38:35,671 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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 152 [2022-11-03 02:38:35,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:35,674 INFO L225 Difference]: With dead ends: 1583 [2022-11-03 02:38:35,674 INFO L226 Difference]: Without dead ends: 1432 [2022-11-03 02:38:35,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:38:35,675 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 33 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:35,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 1228 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 47 Unchecked, 0.2s Time] [2022-11-03 02:38:35,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2022-11-03 02:38:35,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1432. [2022-11-03 02:38:35,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 1.1998602375960867) internal successors, (1717), 1431 states have internal predecessors, (1717), 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) [2022-11-03 02:38:35,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1717 transitions. [2022-11-03 02:38:35,697 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1717 transitions. Word has length 152 [2022-11-03 02:38:35,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:35,697 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1717 transitions. [2022-11-03 02:38:35,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2022-11-03 02:38:35,698 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1717 transitions. [2022-11-03 02:38:35,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:38:35,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:35,701 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:35,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:35,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:38:35,926 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:35,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash -2033467457, now seen corresponding path program 1 times [2022-11-03 02:38:35,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:35,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1768440637] [2022-11-03 02:38:35,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:35,928 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:35,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:35,929 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:35,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Waiting until timeout for monitored process [2022-11-03 02:38:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:36,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-03 02:38:36,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:37,274 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:37,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:38:37,275 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:38:37,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1768440637] [2022-11-03 02:38:37,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1768440637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:38:37,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:38:37,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:38:37,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772933568] [2022-11-03 02:38:37,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:38:37,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:38:37,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:38:37,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:38:37,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:38:37,277 INFO L87 Difference]: Start difference. First operand 1432 states and 1717 transitions. Second operand has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:38:37,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:38:37,555 INFO L93 Difference]: Finished difference Result 2034 states and 2488 transitions. [2022-11-03 02:38:37,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:38:37,562 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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 152 [2022-11-03 02:38:37,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:38:37,565 INFO L225 Difference]: With dead ends: 2034 [2022-11-03 02:38:37,565 INFO L226 Difference]: Without dead ends: 1432 [2022-11-03 02:38:37,566 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:38:37,567 INFO L413 NwaCegarLoop]: 245 mSDtfsCounter, 28 mSDsluCounter, 1332 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:38:37,567 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 1577 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 125 Unchecked, 0.2s Time] [2022-11-03 02:38:37,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2022-11-03 02:38:37,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1432. [2022-11-03 02:38:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1431 states have (on average 1.1956673654786862) internal successors, (1711), 1431 states have internal predecessors, (1711), 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) [2022-11-03 02:38:37,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 1711 transitions. [2022-11-03 02:38:37,591 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 1711 transitions. Word has length 152 [2022-11-03 02:38:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:38:37,591 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 1711 transitions. [2022-11-03 02:38:37,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 19.0) internal successors, (152), 8 states have internal predecessors, (152), 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) [2022-11-03 02:38:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 1711 transitions. [2022-11-03 02:38:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:38:37,594 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:38:37,594 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:38:37,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (61)] Forceful destruction successful, exit code 0 [2022-11-03 02:38:37,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:38:37,819 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:38:37,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:38:37,819 INFO L85 PathProgramCache]: Analyzing trace with hash -71892799, now seen corresponding path program 1 times [2022-11-03 02:38:37,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:38:37,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593222697] [2022-11-03 02:38:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:38:37,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:38:37,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:38:37,823 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:38:37,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 02:38:38,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:38:38,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:38:38,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:38:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:38:40,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:39:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:03,257 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:39:03,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593222697] [2022-11-03 02:39:03,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593222697] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:39:03,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1847225797] [2022-11-03 02:39:03,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:39:03,257 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:39:03,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:39:03,258 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:39:03,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 02:39:04,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:39:04,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:39:04,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:39:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:39:05,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:40:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:40:39,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1847225797] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:40:39,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917843654] [2022-11-03 02:40:39,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:40:39,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:40:39,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:40:39,259 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:40:39,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-03 02:40:39,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:40:39,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:40:39,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:40:45,910 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:40:45,910 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:41:50,387 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:50,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917843654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:41:50,387 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:41:50,388 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 11] total 41 [2022-11-03 02:41:50,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755438067] [2022-11-03 02:41:50,388 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:41:50,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2022-11-03 02:41:50,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:50,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2022-11-03 02:41:50,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=1309, Unknown=77, NotChecked=0, Total=1640 [2022-11-03 02:41:50,390 INFO L87 Difference]: Start difference. First operand 1432 states and 1711 transitions. Second operand has 41 states, 41 states have (on average 18.195121951219512) internal successors, (746), 41 states have internal predecessors, (746), 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) [2022-11-03 02:41:55,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:55,545 INFO L93 Difference]: Finished difference Result 1737 states and 2161 transitions. [2022-11-03 02:41:55,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-03 02:41:55,545 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 18.195121951219512) internal successors, (746), 41 states have internal predecessors, (746), 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 152 [2022-11-03 02:41:55,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:55,548 INFO L225 Difference]: With dead ends: 1737 [2022-11-03 02:41:55,548 INFO L226 Difference]: Without dead ends: 1735 [2022-11-03 02:41:55,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 920 GetRequests, 867 SyntacticMatches, 5 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 184.8s TimeCoverageRelationStatistics Valid=415, Invalid=1956, Unknown=79, NotChecked=0, Total=2450 [2022-11-03 02:41:55,549 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 1778 mSDsluCounter, 3832 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 4021 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:55,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1778 Valid, 4021 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 80 Unchecked, 0.0s Time] [2022-11-03 02:41:55,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2022-11-03 02:41:55,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1732. [2022-11-03 02:41:55,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1731 states have (on average 1.244945118428654) internal successors, (2155), 1731 states have internal predecessors, (2155), 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) [2022-11-03 02:41:55,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2155 transitions. [2022-11-03 02:41:55,576 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2155 transitions. Word has length 152 [2022-11-03 02:41:55,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:55,576 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 2155 transitions. [2022-11-03 02:41:55,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 18.195121951219512) internal successors, (746), 41 states have internal predecessors, (746), 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) [2022-11-03 02:41:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2155 transitions. [2022-11-03 02:41:55,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:41:55,579 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:55,579 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:55,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:55,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Ended with exit code 0 [2022-11-03 02:41:56,000 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Ended with exit code 0 [2022-11-03 02:41:56,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:41:56,194 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:56,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:56,195 INFO L85 PathProgramCache]: Analyzing trace with hash 608165571, now seen corresponding path program 1 times [2022-11-03 02:41:56,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:56,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [895973148] [2022-11-03 02:41:56,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:56,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:56,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:56,206 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:56,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 02:41:56,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:56,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-03 02:41:56,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:57,190 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:57,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:57,190 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:57,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [895973148] [2022-11-03 02:41:57,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [895973148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:57,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:57,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:41:57,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785520849] [2022-11-03 02:41:57,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:57,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:41:57,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:57,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:41:57,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:41:57,192 INFO L87 Difference]: Start difference. First operand 1732 states and 2155 transitions. Second operand has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2022-11-03 02:41:57,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:57,327 INFO L93 Difference]: Finished difference Result 2316 states and 2912 transitions. [2022-11-03 02:41:57,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:41:57,328 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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 152 [2022-11-03 02:41:57,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:57,330 INFO L225 Difference]: With dead ends: 2316 [2022-11-03 02:41:57,330 INFO L226 Difference]: Without dead ends: 2010 [2022-11-03 02:41:57,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:41:57,334 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 32 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 50 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:57,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 1223 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 50 Unchecked, 0.1s Time] [2022-11-03 02:41:57,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2010 states. [2022-11-03 02:41:57,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2010 to 2010. [2022-11-03 02:41:57,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2009 states have (on average 1.2229965156794425) internal successors, (2457), 2009 states have internal predecessors, (2457), 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) [2022-11-03 02:41:57,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2457 transitions. [2022-11-03 02:41:57,361 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2457 transitions. Word has length 152 [2022-11-03 02:41:57,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:57,361 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2457 transitions. [2022-11-03 02:41:57,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 21.714285714285715) internal successors, (152), 7 states have internal predecessors, (152), 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) [2022-11-03 02:41:57,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2457 transitions. [2022-11-03 02:41:57,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:41:57,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:57,364 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:57,385 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:57,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:57,584 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:57,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:57,585 INFO L85 PathProgramCache]: Analyzing trace with hash 199579709, now seen corresponding path program 1 times [2022-11-03 02:41:57,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:57,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1817888057] [2022-11-03 02:41:57,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:57,586 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:57,586 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:57,587 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:57,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Waiting until timeout for monitored process [2022-11-03 02:41:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:41:58,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 02:41:58,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:41:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:41:59,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:41:59,455 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:41:59,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1817888057] [2022-11-03 02:41:59,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1817888057] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:41:59,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:41:59,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:41:59,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082887649] [2022-11-03 02:41:59,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:41:59,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:41:59,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:41:59,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:41:59,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:41:59,457 INFO L87 Difference]: Start difference. First operand 2010 states and 2457 transitions. Second operand has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:41:59,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:41:59,624 INFO L93 Difference]: Finished difference Result 2167 states and 2689 transitions. [2022-11-03 02:41:59,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:41:59,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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 152 [2022-11-03 02:41:59,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:41:59,629 INFO L225 Difference]: With dead ends: 2167 [2022-11-03 02:41:59,629 INFO L226 Difference]: Without dead ends: 2016 [2022-11-03 02:41:59,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:41:59,630 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 23 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1968 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 136 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:41:59,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1968 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 136 Unchecked, 0.1s Time] [2022-11-03 02:41:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2016 states. [2022-11-03 02:41:59,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2016 to 2016. [2022-11-03 02:41:59,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2016 states, 2015 states have (on average 1.2228287841191068) internal successors, (2464), 2015 states have internal predecessors, (2464), 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) [2022-11-03 02:41:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2016 states to 2016 states and 2464 transitions. [2022-11-03 02:41:59,656 INFO L78 Accepts]: Start accepts. Automaton has 2016 states and 2464 transitions. Word has length 152 [2022-11-03 02:41:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:41:59,656 INFO L495 AbstractCegarLoop]: Abstraction has 2016 states and 2464 transitions. [2022-11-03 02:41:59,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.88888888888889) internal successors, (152), 9 states have internal predecessors, (152), 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) [2022-11-03 02:41:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 2016 states and 2464 transitions. [2022-11-03 02:41:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-03 02:41:59,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:41:59,659 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:41:59,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (66)] Forceful destruction successful, exit code 0 [2022-11-03 02:41:59,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:41:59,877 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:41:59,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:41:59,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1974587071, now seen corresponding path program 1 times [2022-11-03 02:41:59,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:41:59,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [335144186] [2022-11-03 02:41:59,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:41:59,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:41:59,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:41:59,881 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:41:59,917 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 02:42:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:00,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:42:00,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:02,195 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:02,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:42:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:25,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:42:25,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [335144186] [2022-11-03 02:42:25,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [335144186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:42:25,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1224359274] [2022-11-03 02:42:25,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:42:25,109 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:42:25,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:42:25,110 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:42:25,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_153206fc-c6ee-4b76-ab8f-8890231ba938/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 02:42:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:42:26,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1010 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-03 02:42:26,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:42:27,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:42:27,733 INFO L328 TraceCheckSpWp]: Computing backward predicates...