./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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 a98e282f97a500bd5508bb46aaa1001023120ce878501f3889727b27d17dfa18 --- 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 03:42:57,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:42:57,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:42:57,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:42:57,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:42:57,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:42:57,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:42:57,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:42:57,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:42:57,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:42:57,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:42:57,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:42:57,130 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:42:57,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:42:57,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:42:57,136 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:42:57,137 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:42:57,138 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:42:57,140 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:42:57,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:42:57,143 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:42:57,148 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:42:57,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:42:57,151 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:42:57,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:42:57,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:42:57,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:42:57,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:42:57,164 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:42:57,166 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:42:57,166 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:42:57,167 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:42:57,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:42:57,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:42:57,174 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:42:57,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:42:57,175 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:42:57,176 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:42:57,176 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:42:57,177 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:42:57,178 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:42:57,179 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:42:57,225 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:42:57,226 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:42:57,226 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:42:57,226 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:42:57,228 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:42:57,228 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:42:57,228 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:42:57,228 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:42:57,229 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:42:57,229 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:42:57,230 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:42:57,230 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:42:57,230 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:42:57,231 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:42:57,231 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:42:57,231 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:42:57,231 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:42:57,232 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:42:57,233 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:42:57,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:42:57,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:42:57,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:42:57,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:42:57,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:42:57,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:42:57,236 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:42:57,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:42:57,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:42:57,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:42:57,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:42:57,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:42:57,238 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:42:57,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:42:57,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:42:57,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:42:57,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:42:57,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:42:57,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:42:57,240 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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98e282f97a500bd5508bb46aaa1001023120ce878501f3889727b27d17dfa18 [2022-11-03 03:42:57,533 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:42:57,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:42:57,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:42:57,565 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:42:57,565 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:42:57,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c [2022-11-03 03:42:57,649 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data/02f14f37f/e19b5f2f32df4be485ef79d613bc3004/FLAG421fedbf4 [2022-11-03 03:42:58,296 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:42:58,296 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c [2022-11-03 03:42:58,313 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data/02f14f37f/e19b5f2f32df4be485ef79d613bc3004/FLAG421fedbf4 [2022-11-03 03:42:58,658 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data/02f14f37f/e19b5f2f32df4be485ef79d613bc3004 [2022-11-03 03:42:58,661 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:42:58,663 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:42:58,667 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:42:58,667 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:42:58,671 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:42:58,672 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:58,673 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7727c8cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:58, skipping insertion in model container [2022-11-03 03:42:58,674 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:42:58" (1/1) ... [2022-11-03 03:42:58,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:42:58,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:42:58,939 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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c[1107,1120] [2022-11-03 03:42:59,206 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:42:59,210 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:42:59,222 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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c[1107,1120] [2022-11-03 03:42:59,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:42:59,425 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:42:59,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59 WrapperNode [2022-11-03 03:42:59,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:42:59,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:42:59,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:42:59,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:42:59,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,586 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1147 [2022-11-03 03:42:59,590 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:42:59,590 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:42:59,591 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:42:59,591 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:42:59,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,631 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,711 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:42:59,734 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:42:59,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:42:59,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:42:59,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (1/1) ... [2022-11-03 03:42:59,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:42:59,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:42:59,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:42:59,811 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:42:59,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:42:59,833 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:43:00,159 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:43:00,161 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:43:09,251 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:43:10,058 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:43:10,058 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:43:10,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:10 BoogieIcfgContainer [2022-11-03 03:43:10,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:43:10,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:43:10,065 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:43:10,068 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:43:10,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:42:58" (1/3) ... [2022-11-03 03:43:10,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7090e790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:10, skipping insertion in model container [2022-11-03 03:43:10,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:42:59" (2/3) ... [2022-11-03 03:43:10,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7090e790 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:10, skipping insertion in model container [2022-11-03 03:43:10,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:10" (3/3) ... [2022-11-03 03:43:10,072 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.itc99_b13.c [2022-11-03 03:43:10,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:43:10,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:43:10,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:43:10,190 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;@51b1caa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:43:10,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:43:10,197 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 03:43:10,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 03:43:10,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:10,209 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 03:43:10,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:10,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:10,219 INFO L85 PathProgramCache]: Analyzing trace with hash 13713888, now seen corresponding path program 1 times [2022-11-03 03:43:10,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:43:10,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629648606] [2022-11-03 03:43:10,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:10,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:43:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:43:18,667 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 03:43:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 03:43:21,954 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 03:43:21,957 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 03:43:21,958 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 03:43:21,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:43:21,964 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 03:43:21,972 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 03:43:22,035 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 03:43:22,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 03:43:22 BoogieIcfgContainer [2022-11-03 03:43:22,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 03:43:22,068 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 03:43:22,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 03:43:22,069 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 03:43:22,070 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:10" (3/4) ... [2022-11-03 03:43:22,073 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 03:43:22,073 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 03:43:22,076 INFO L158 Benchmark]: Toolchain (without parser) took 23412.18ms. Allocated memory was 83.9MB in the beginning and 738.2MB in the end (delta: 654.3MB). Free memory was 47.1MB in the beginning and 506.7MB in the end (delta: -459.6MB). Peak memory consumption was 193.8MB. Max. memory is 16.1GB. [2022-11-03 03:43:22,077 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory was 65.7MB in the beginning and 65.6MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 03:43:22,079 INFO L158 Benchmark]: CACSL2BoogieTranslator took 759.69ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.9MB in the beginning and 55.2MB in the end (delta: -8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-03 03:43:22,081 INFO L158 Benchmark]: Boogie Procedure Inliner took 162.66ms. Allocated memory is still 100.7MB. Free memory was 55.2MB in the beginning and 69.2MB in the end (delta: -14.0MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2022-11-03 03:43:22,087 INFO L158 Benchmark]: Boogie Preprocessor took 142.47ms. Allocated memory is still 100.7MB. Free memory was 69.2MB in the beginning and 61.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 03:43:22,088 INFO L158 Benchmark]: RCFGBuilder took 10327.73ms. Allocated memory was 100.7MB in the beginning and 339.7MB in the end (delta: 239.1MB). Free memory was 61.2MB in the beginning and 237.0MB in the end (delta: -175.8MB). Peak memory consumption was 207.7MB. Max. memory is 16.1GB. [2022-11-03 03:43:22,089 INFO L158 Benchmark]: TraceAbstraction took 12002.12ms. Allocated memory was 339.7MB in the beginning and 738.2MB in the end (delta: 398.5MB). Free memory was 236.0MB in the beginning and 507.8MB in the end (delta: -271.8MB). Peak memory consumption was 304.9MB. Max. memory is 16.1GB. [2022-11-03 03:43:22,091 INFO L158 Benchmark]: Witness Printer took 6.23ms. Allocated memory is still 738.2MB. Free memory was 507.8MB in the beginning and 506.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 03:43:22,100 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 83.9MB. Free memory was 65.7MB in the beginning and 65.6MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 759.69ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 46.9MB in the beginning and 55.2MB in the end (delta: -8.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 162.66ms. Allocated memory is still 100.7MB. Free memory was 55.2MB in the beginning and 69.2MB in the end (delta: -14.0MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 142.47ms. Allocated memory is still 100.7MB. Free memory was 69.2MB in the beginning and 61.2MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 10327.73ms. Allocated memory was 100.7MB in the beginning and 339.7MB in the end (delta: 239.1MB). Free memory was 61.2MB in the beginning and 237.0MB in the end (delta: -175.8MB). Peak memory consumption was 207.7MB. Max. memory is 16.1GB. * TraceAbstraction took 12002.12ms. Allocated memory was 339.7MB in the beginning and 738.2MB in the end (delta: 398.5MB). Free memory was 236.0MB in the beginning and 507.8MB in the end (delta: -271.8MB). Peak memory consumption was 304.9MB. Max. memory is 16.1GB. * Witness Printer took 6.23ms. Allocated memory is still 738.2MB. Free memory was 507.8MB in the beginning and 506.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. 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 bitwiseComplement at line 179, overapproximation of bitwiseOr at line 188, overapproximation of bitwiseAnd at line 173. 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_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 8); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (8 - 1); [L31] const SORT_10 mask_SORT_10 = (SORT_10)-1 >> (sizeof(SORT_10) * 8 - 32); [L32] const SORT_10 msb_SORT_10 = (SORT_10)1 << (32 - 1); [L34] const SORT_20 mask_SORT_20 = (SORT_20)-1 >> (sizeof(SORT_20) * 8 - 4); [L35] const SORT_20 msb_SORT_20 = (SORT_20)1 << (4 - 1); [L37] const SORT_29 mask_SORT_29 = (SORT_29)-1 >> (sizeof(SORT_29) * 8 - 10); [L38] const SORT_29 msb_SORT_29 = (SORT_29)1 << (10 - 1); [L40] const SORT_33 mask_SORT_33 = (SORT_33)-1 >> (sizeof(SORT_33) * 8 - 2); [L41] const SORT_33 msb_SORT_33 = (SORT_33)1 << (2 - 1); [L43] const SORT_1 var_7 = 0; [L44] const SORT_10 var_12 = 1; [L45] const SORT_20 var_21 = 0; [L46] const SORT_10 var_26 = 0; [L47] const SORT_29 var_30 = 0; [L48] const SORT_1 var_122 = 1; [L49] const SORT_20 var_126 = 1; [L50] const SORT_3 var_183 = 0; [L51] const SORT_10 var_254 = 104; [L53] SORT_1 input_2; [L54] SORT_3 input_4; [L55] SORT_1 input_5; [L56] SORT_1 input_6; [L57] SORT_1 input_201; [L58] SORT_1 input_228; [L59] SORT_1 input_234; [L60] SORT_1 input_235; [L61] SORT_29 input_249; [L62] SORT_1 input_262; [L63] SORT_1 input_270; [L64] SORT_1 input_278; [L65] SORT_1 input_284; [L66] SORT_1 input_289; [L67] SORT_1 input_290; [L68] SORT_1 input_291; [L69] SORT_1 input_300; [L70] SORT_1 input_301; [L71] SORT_1 input_302; [L72] SORT_3 input_323; [L73] SORT_1 input_330; [L74] SORT_1 input_336; [L76] SORT_1 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_20 state_22 = __VERIFIER_nondet_uchar() & mask_SORT_20; [L79] SORT_29 state_31 = __VERIFIER_nondet_ushort() & mask_SORT_29; [L80] SORT_1 state_38 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_1 state_43 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] SORT_20 state_49 = __VERIFIER_nondet_uchar() & mask_SORT_20; [L83] SORT_1 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] SORT_1 state_64 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] SORT_1 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] SORT_1 state_86 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] SORT_1 state_100 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L88] SORT_1 state_123 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_1 state_130 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L90] SORT_1 state_135 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L91] SORT_1 state_141 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L92] SORT_1 state_153 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L93] SORT_1 state_166 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L94] SORT_1 state_177 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L95] SORT_3 state_184 = __VERIFIER_nondet_uchar() & mask_SORT_3; [L96] SORT_1 state_197 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L97] SORT_1 state_199 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L98] SORT_1 state_203 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L100] SORT_1 init_9_arg_1 = var_7; [L101] state_8 = init_9_arg_1 [L102] SORT_1 init_16_arg_1 = var_7; [L103] state_15 = init_16_arg_1 [L104] SORT_20 init_23_arg_1 = var_21; [L105] state_22 = init_23_arg_1 [L106] SORT_29 init_32_arg_1 = var_30; [L107] state_31 = init_32_arg_1 [L108] SORT_1 init_39_arg_1 = var_7; [L109] state_38 = init_39_arg_1 [L110] SORT_1 init_44_arg_1 = var_7; [L111] state_43 = init_44_arg_1 [L112] SORT_20 init_50_arg_1 = var_21; [L113] state_49 = init_50_arg_1 [L114] SORT_1 init_61_arg_1 = var_7; [L115] state_60 = init_61_arg_1 [L116] SORT_1 init_65_arg_1 = var_7; [L117] state_64 = init_65_arg_1 [L118] SORT_1 init_73_arg_1 = var_7; [L119] state_72 = init_73_arg_1 [L120] SORT_1 init_87_arg_1 = var_7; [L121] state_86 = init_87_arg_1 [L122] SORT_1 init_101_arg_1 = var_7; [L123] state_100 = init_101_arg_1 [L124] SORT_1 init_124_arg_1 = var_122; [L125] state_123 = init_124_arg_1 [L126] SORT_1 init_131_arg_1 = var_7; [L127] state_130 = init_131_arg_1 [L128] SORT_1 init_136_arg_1 = var_7; [L129] state_135 = init_136_arg_1 [L130] SORT_1 init_142_arg_1 = var_7; [L131] state_141 = init_142_arg_1 [L132] SORT_1 init_154_arg_1 = var_7; [L133] state_153 = init_154_arg_1 [L134] SORT_1 init_167_arg_1 = var_7; [L135] state_166 = init_167_arg_1 [L136] SORT_1 init_178_arg_1 = var_7; [L137] state_177 = init_178_arg_1 [L138] SORT_3 init_185_arg_1 = var_183; [L139] state_184 = init_185_arg_1 [L140] SORT_1 init_198_arg_1 = var_7; [L141] state_197 = init_198_arg_1 [L142] SORT_1 init_200_arg_1 = var_7; [L143] state_199 = init_200_arg_1 [L144] SORT_1 init_204_arg_1 = var_7; [L145] state_203 = init_204_arg_1 VAL [init_101_arg_1=0, init_124_arg_1=1, init_131_arg_1=0, init_136_arg_1=0, init_142_arg_1=0, init_154_arg_1=0, init_167_arg_1=0, init_16_arg_1=0, init_178_arg_1=0, init_185_arg_1=0, init_198_arg_1=0, init_200_arg_1=0, init_204_arg_1=0, init_23_arg_1=0, init_32_arg_1=0, init_39_arg_1=0, init_44_arg_1=0, init_50_arg_1=0, init_61_arg_1=0, init_65_arg_1=0, init_73_arg_1=0, init_87_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_10=4294967295, mask_SORT_20=15, mask_SORT_29=1023, mask_SORT_3=255, mask_SORT_33=3, msb_SORT_1=1, msb_SORT_10=2147483648, msb_SORT_20=8, msb_SORT_29=512, msb_SORT_3=128, msb_SORT_33=2, state_100=0, state_123=1, state_130=0, state_135=0, state_141=0, state_15=0, state_153=0, state_166=0, state_177=0, state_184=0, state_197=0, state_199=0, state_203=0, state_22=0, state_31=0, state_38=0, state_43=0, state_49=0, state_60=0, state_64=0, state_72=0, state_8=0, state_86=0, var_12=1, var_122=1, var_126=1, var_183=0, var_21=0, var_254=104, var_26=0, var_30=0, var_7=0] [L148] input_2 = __VERIFIER_nondet_uchar() [L149] input_4 = __VERIFIER_nondet_uchar() [L150] input_5 = __VERIFIER_nondet_uchar() [L151] input_6 = __VERIFIER_nondet_uchar() [L152] input_201 = __VERIFIER_nondet_uchar() [L153] input_228 = __VERIFIER_nondet_uchar() [L154] input_234 = __VERIFIER_nondet_uchar() [L155] input_235 = __VERIFIER_nondet_uchar() [L156] input_249 = __VERIFIER_nondet_ushort() [L157] input_262 = __VERIFIER_nondet_uchar() [L158] input_270 = __VERIFIER_nondet_uchar() [L159] input_278 = __VERIFIER_nondet_uchar() [L160] input_284 = __VERIFIER_nondet_uchar() [L161] input_289 = __VERIFIER_nondet_uchar() [L162] input_290 = __VERIFIER_nondet_uchar() [L163] input_291 = __VERIFIER_nondet_uchar() [L164] input_300 = __VERIFIER_nondet_uchar() [L165] input_301 = __VERIFIER_nondet_uchar() [L166] input_302 = __VERIFIER_nondet_uchar() [L167] input_323 = __VERIFIER_nondet_uchar() [L168] input_330 = __VERIFIER_nondet_uchar() [L169] input_336 = __VERIFIER_nondet_uchar() [L172] SORT_1 var_11_arg_0 = state_8; [L173] var_11_arg_0 = var_11_arg_0 & mask_SORT_1 [L174] SORT_10 var_11 = var_11_arg_0; [L175] SORT_10 var_13_arg_0 = var_11; [L176] SORT_10 var_13_arg_1 = var_12; [L177] SORT_1 var_13 = var_13_arg_0 == var_13_arg_1; [L178] SORT_1 var_14_arg_0 = var_13; [L179] SORT_1 var_14 = ~var_14_arg_0; [L180] SORT_1 var_17_arg_0 = state_15; [L181] var_17_arg_0 = var_17_arg_0 & mask_SORT_1 [L182] SORT_10 var_17 = var_17_arg_0; [L183] SORT_10 var_18_arg_0 = var_17; [L184] SORT_10 var_18_arg_1 = var_12; [L185] SORT_1 var_18 = var_18_arg_0 == var_18_arg_1; [L186] SORT_1 var_19_arg_0 = var_14; [L187] SORT_1 var_19_arg_1 = var_18; [L188] SORT_1 var_19 = var_19_arg_0 | var_19_arg_1; [L189] SORT_20 var_24_arg_0 = state_22; [L190] SORT_1 var_24 = var_24_arg_0 >> 3; [L191] SORT_1 var_25_arg_0 = var_24; [L192] var_25_arg_0 = var_25_arg_0 & mask_SORT_1 [L193] SORT_10 var_25 = var_25_arg_0; [L194] SORT_10 var_27_arg_0 = var_25; [L195] SORT_10 var_27_arg_1 = var_26; [L196] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L197] SORT_1 var_28_arg_0 = var_19; [L198] SORT_1 var_28_arg_1 = var_27; [L199] SORT_1 var_28 = var_28_arg_0 & var_28_arg_1; [L200] SORT_29 var_34_arg_0 = state_31; [L201] SORT_33 var_34 = var_34_arg_0 >> 8; [L202] SORT_33 var_35_arg_0 = var_34; [L203] var_35_arg_0 = var_35_arg_0 & mask_SORT_33 [L204] SORT_10 var_35 = var_35_arg_0; [L205] SORT_10 var_36_arg_0 = var_35; [L206] SORT_10 var_36_arg_1 = var_26; [L207] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L208] SORT_1 var_37_arg_0 = var_28; [L209] SORT_1 var_37_arg_1 = var_36; [L210] SORT_1 var_37 = var_37_arg_0 & var_37_arg_1; [L211] SORT_1 var_40_arg_0 = state_38; [L212] var_40_arg_0 = var_40_arg_0 & mask_SORT_1 [L213] SORT_10 var_40 = var_40_arg_0; [L214] SORT_10 var_41_arg_0 = var_40; [L215] SORT_10 var_41_arg_1 = var_12; [L216] SORT_1 var_41 = var_41_arg_0 == var_41_arg_1; [L217] SORT_1 var_42_arg_0 = var_41; [L218] SORT_1 var_42 = ~var_42_arg_0; [L219] SORT_1 var_45_arg_0 = state_43; [L220] var_45_arg_0 = var_45_arg_0 & mask_SORT_1 [L221] SORT_10 var_45 = var_45_arg_0; [L222] SORT_10 var_46_arg_0 = var_45; [L223] SORT_10 var_46_arg_1 = var_12; [L224] SORT_1 var_46 = var_46_arg_0 == var_46_arg_1; [L225] SORT_1 var_47_arg_0 = var_42; [L226] SORT_1 var_47_arg_1 = var_46; [L227] SORT_1 var_47 = var_47_arg_0 | var_47_arg_1; [L228] SORT_1 var_48_arg_0 = var_37; [L229] SORT_1 var_48_arg_1 = var_47; [L230] SORT_1 var_48 = var_48_arg_0 & var_48_arg_1; [L231] SORT_20 var_51_arg_0 = state_22; [L232] SORT_20 var_51_arg_1 = state_49; [L233] SORT_1 var_51 = var_51_arg_0 == var_51_arg_1; [L234] SORT_1 var_52_arg_0 = var_48; [L235] SORT_1 var_52_arg_1 = var_51; [L236] SORT_1 var_52 = var_52_arg_0 & var_52_arg_1; [L237] SORT_1 var_53_arg_0 = state_15; [L238] var_53_arg_0 = var_53_arg_0 & mask_SORT_1 [L239] SORT_10 var_53 = var_53_arg_0; [L240] SORT_10 var_54_arg_0 = var_53; [L241] SORT_10 var_54_arg_1 = var_12; [L242] SORT_1 var_54 = var_54_arg_0 == var_54_arg_1; [L243] SORT_1 var_55_arg_0 = var_54; [L244] SORT_1 var_55 = ~var_55_arg_0; [L245] SORT_1 var_56_arg_0 = state_8; [L246] var_56_arg_0 = var_56_arg_0 & mask_SORT_1 [L247] SORT_10 var_56 = var_56_arg_0; [L248] SORT_10 var_57_arg_0 = var_56; [L249] SORT_10 var_57_arg_1 = var_12; [L250] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L251] SORT_1 var_58_arg_0 = var_55; [L252] SORT_1 var_58_arg_1 = var_57; [L253] SORT_1 var_58 = var_58_arg_0 | var_58_arg_1; [L254] SORT_1 var_59_arg_0 = var_52; [L255] SORT_1 var_59_arg_1 = var_58; [L256] SORT_1 var_59 = var_59_arg_0 & var_59_arg_1; [L257] SORT_1 var_62_arg_0 = state_60; [L258] var_62_arg_0 = var_62_arg_0 & mask_SORT_1 [L259] SORT_10 var_62 = var_62_arg_0; [L260] SORT_10 var_63_arg_0 = var_62; [L261] SORT_10 var_63_arg_1 = var_26; [L262] SORT_1 var_63 = var_63_arg_0 == var_63_arg_1; [L263] SORT_1 var_66_arg_0 = state_64; [L264] var_66_arg_0 = var_66_arg_0 & mask_SORT_1 [L265] SORT_10 var_66 = var_66_arg_0; [L266] SORT_10 var_67_arg_0 = var_66; [L267] SORT_10 var_67_arg_1 = var_26; [L268] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L269] SORT_1 var_68_arg_0 = var_63; [L270] SORT_1 var_68_arg_1 = var_67; [L271] SORT_1 var_68 = var_68_arg_0 | var_68_arg_1; [L272] SORT_1 var_69_arg_0 = var_59; [L273] SORT_1 var_69_arg_1 = var_68; [L274] SORT_1 var_69 = var_69_arg_0 & var_69_arg_1; [L275] SORT_1 var_70_arg_0 = state_60; [L276] var_70_arg_0 = var_70_arg_0 & mask_SORT_1 [L277] SORT_10 var_70 = var_70_arg_0; [L278] SORT_10 var_71_arg_0 = var_70; [L279] SORT_10 var_71_arg_1 = var_26; [L280] SORT_1 var_71 = var_71_arg_0 == var_71_arg_1; [L281] SORT_1 var_74_arg_0 = state_72; [L282] var_74_arg_0 = var_74_arg_0 & mask_SORT_1 [L283] SORT_10 var_74 = var_74_arg_0; [L284] SORT_10 var_75_arg_0 = var_74; [L285] SORT_10 var_75_arg_1 = var_26; [L286] SORT_1 var_75 = var_75_arg_0 == var_75_arg_1; [L287] SORT_1 var_76_arg_0 = var_71; [L288] SORT_1 var_76_arg_1 = var_75; [L289] SORT_1 var_76 = var_76_arg_0 | var_76_arg_1; [L290] SORT_1 var_77_arg_0 = var_69; [L291] SORT_1 var_77_arg_1 = var_76; [L292] SORT_1 var_77 = var_77_arg_0 & var_77_arg_1; [L293] SORT_1 var_78_arg_0 = state_64; [L294] var_78_arg_0 = var_78_arg_0 & mask_SORT_1 [L295] SORT_10 var_78 = var_78_arg_0; [L296] SORT_10 var_79_arg_0 = var_78; [L297] SORT_10 var_79_arg_1 = var_26; [L298] SORT_1 var_79 = var_79_arg_0 == var_79_arg_1; [L299] SORT_1 var_80_arg_0 = state_72; [L300] var_80_arg_0 = var_80_arg_0 & mask_SORT_1 [L301] SORT_10 var_80 = var_80_arg_0; [L302] SORT_10 var_81_arg_0 = var_80; [L303] SORT_10 var_81_arg_1 = var_26; [L304] SORT_1 var_81 = var_81_arg_0 == var_81_arg_1; [L305] SORT_1 var_82_arg_0 = var_79; [L306] SORT_1 var_82_arg_1 = var_81; [L307] SORT_1 var_82 = var_82_arg_0 | var_82_arg_1; [L308] SORT_1 var_83_arg_0 = var_77; [L309] SORT_1 var_83_arg_1 = var_82; [L310] SORT_1 var_83 = var_83_arg_0 & var_83_arg_1; [L311] SORT_1 var_84_arg_0 = state_8; [L312] var_84_arg_0 = var_84_arg_0 & mask_SORT_1 [L313] SORT_10 var_84 = var_84_arg_0; [L314] SORT_10 var_85_arg_0 = var_84; [L315] SORT_10 var_85_arg_1 = var_26; [L316] SORT_1 var_85 = var_85_arg_0 == var_85_arg_1; [L317] SORT_1 var_88_arg_0 = state_86; [L318] var_88_arg_0 = var_88_arg_0 & mask_SORT_1 [L319] SORT_10 var_88 = var_88_arg_0; [L320] SORT_10 var_89_arg_0 = var_88; [L321] SORT_10 var_89_arg_1 = var_26; [L322] SORT_1 var_89 = var_89_arg_0 == var_89_arg_1; [L323] SORT_1 var_90_arg_0 = var_85; [L324] SORT_1 var_90_arg_1 = var_89; [L325] SORT_1 var_90 = var_90_arg_0 | var_90_arg_1; [L326] SORT_1 var_91_arg_0 = var_83; [L327] SORT_1 var_91_arg_1 = var_90; [L328] SORT_1 var_91 = var_91_arg_0 & var_91_arg_1; [L329] SORT_1 var_92_arg_0 = state_8; [L330] var_92_arg_0 = var_92_arg_0 & mask_SORT_1 [L331] SORT_10 var_92 = var_92_arg_0; [L332] SORT_10 var_93_arg_0 = var_92; [L333] SORT_10 var_93_arg_1 = var_26; [L334] SORT_1 var_93 = var_93_arg_0 == var_93_arg_1; [L335] SORT_1 var_94_arg_0 = state_72; [L336] var_94_arg_0 = var_94_arg_0 & mask_SORT_1 [L337] SORT_10 var_94 = var_94_arg_0; [L338] SORT_10 var_95_arg_0 = var_94; [L339] SORT_10 var_95_arg_1 = var_26; [L340] SORT_1 var_95 = var_95_arg_0 == var_95_arg_1; [L341] SORT_1 var_96_arg_0 = var_93; [L342] SORT_1 var_96_arg_1 = var_95; [L343] SORT_1 var_96 = var_96_arg_0 | var_96_arg_1; [L344] SORT_1 var_97_arg_0 = var_91; [L345] SORT_1 var_97_arg_1 = var_96; [L346] SORT_1 var_97 = var_97_arg_0 & var_97_arg_1; [L347] SORT_1 var_98_arg_0 = state_8; [L348] var_98_arg_0 = var_98_arg_0 & mask_SORT_1 [L349] SORT_10 var_98 = var_98_arg_0; [L350] SORT_10 var_99_arg_0 = var_98; [L351] SORT_10 var_99_arg_1 = var_26; [L352] SORT_1 var_99 = var_99_arg_0 == var_99_arg_1; [L353] SORT_1 var_102_arg_0 = state_100; [L354] var_102_arg_0 = var_102_arg_0 & mask_SORT_1 [L355] SORT_10 var_102 = var_102_arg_0; [L356] SORT_10 var_103_arg_0 = var_102; [L357] SORT_10 var_103_arg_1 = var_26; [L358] SORT_1 var_103 = var_103_arg_0 == var_103_arg_1; [L359] SORT_1 var_104_arg_0 = var_99; [L360] SORT_1 var_104_arg_1 = var_103; [L361] SORT_1 var_104 = var_104_arg_0 | var_104_arg_1; [L362] SORT_1 var_105_arg_0 = var_97; [L363] SORT_1 var_105_arg_1 = var_104; [L364] SORT_1 var_105 = var_105_arg_0 & var_105_arg_1; [L365] SORT_1 var_106_arg_0 = state_72; [L366] var_106_arg_0 = var_106_arg_0 & mask_SORT_1 [L367] SORT_10 var_106 = var_106_arg_0; [L368] SORT_10 var_107_arg_0 = var_106; [L369] SORT_10 var_107_arg_1 = var_26; [L370] SORT_1 var_107 = var_107_arg_0 == var_107_arg_1; [L371] SORT_1 var_108_arg_0 = state_86; [L372] var_108_arg_0 = var_108_arg_0 & mask_SORT_1 [L373] SORT_10 var_108 = var_108_arg_0; [L374] SORT_10 var_109_arg_0 = var_108; [L375] SORT_10 var_109_arg_1 = var_26; [L376] SORT_1 var_109 = var_109_arg_0 == var_109_arg_1; [L377] SORT_1 var_110_arg_0 = var_107; [L378] SORT_1 var_110_arg_1 = var_109; [L379] SORT_1 var_110 = var_110_arg_0 | var_110_arg_1; [L380] SORT_1 var_111_arg_0 = var_105; [L381] SORT_1 var_111_arg_1 = var_110; [L382] SORT_1 var_111 = var_111_arg_0 & var_111_arg_1; [L383] SORT_1 var_112_arg_0 = state_86; [L384] var_112_arg_0 = var_112_arg_0 & mask_SORT_1 [L385] SORT_10 var_112 = var_112_arg_0; [L386] SORT_10 var_113_arg_0 = var_112; [L387] SORT_10 var_113_arg_1 = var_26; [L388] SORT_1 var_113 = var_113_arg_0 == var_113_arg_1; [L389] SORT_1 var_114_arg_0 = var_113; [L390] SORT_1 var_114 = ~var_114_arg_0; [L391] SORT_1 var_115_arg_0 = state_100; [L392] var_115_arg_0 = var_115_arg_0 & mask_SORT_1 [L393] SORT_10 var_115 = var_115_arg_0; [L394] SORT_10 var_116_arg_0 = var_115; [L395] SORT_10 var_116_arg_1 = var_26; [L396] SORT_1 var_116 = var_116_arg_0 == var_116_arg_1; [L397] SORT_1 var_117_arg_0 = var_114; [L398] SORT_1 var_117_arg_1 = var_116; [L399] SORT_1 var_117 = var_117_arg_0 | var_117_arg_1; [L400] SORT_1 var_118_arg_0 = var_111; [L401] SORT_1 var_118_arg_1 = var_117; [L402] SORT_1 var_118 = var_118_arg_0 & var_118_arg_1; [L403] SORT_1 var_119_arg_0 = state_100; [L404] var_119_arg_0 = var_119_arg_0 & mask_SORT_1 [L405] SORT_10 var_119 = var_119_arg_0; [L406] SORT_10 var_120_arg_0 = var_119; [L407] SORT_10 var_120_arg_1 = var_12; [L408] SORT_1 var_120 = var_120_arg_0 == var_120_arg_1; [L409] SORT_1 var_121_arg_0 = var_120; [L410] SORT_1 var_121 = ~var_121_arg_0; [L411] SORT_1 var_125_arg_0 = state_123; [L412] var_125_arg_0 = var_125_arg_0 & mask_SORT_1 [L413] SORT_20 var_125 = var_125_arg_0; [L414] SORT_20 var_127_arg_0 = var_125; [L415] SORT_20 var_127_arg_1 = var_126; [L416] SORT_1 var_127 = var_127_arg_0 == var_127_arg_1; [L417] SORT_1 var_128_arg_0 = var_121; [L418] SORT_1 var_128_arg_1 = var_127; [L419] SORT_1 var_128 = var_128_arg_0 | var_128_arg_1; [L420] SORT_1 var_129_arg_0 = var_118; [L421] SORT_1 var_129_arg_1 = var_128; [L422] SORT_1 var_129 = var_129_arg_0 & var_129_arg_1; [L423] SORT_1 var_132_arg_0 = state_130; [L424] var_132_arg_0 = var_132_arg_0 & mask_SORT_1 [L425] SORT_10 var_132 = var_132_arg_0; [L426] SORT_10 var_133_arg_0 = var_132; [L427] SORT_10 var_133_arg_1 = var_12; [L428] SORT_1 var_133 = var_133_arg_0 == var_133_arg_1; [L429] SORT_1 var_134_arg_0 = var_133; [L430] SORT_1 var_134 = ~var_134_arg_0; [L431] SORT_1 var_137_arg_0 = state_135; [L432] var_137_arg_0 = var_137_arg_0 & mask_SORT_1 [L433] SORT_10 var_137 = var_137_arg_0; [L434] SORT_10 var_138_arg_0 = var_137; [L435] SORT_10 var_138_arg_1 = var_12; [L436] SORT_1 var_138 = var_138_arg_0 == var_138_arg_1; [L437] SORT_1 var_139_arg_0 = var_134; [L438] SORT_1 var_139_arg_1 = var_138; [L439] SORT_1 var_139 = var_139_arg_0 | var_139_arg_1; [L440] SORT_1 var_140_arg_0 = var_129; [L441] SORT_1 var_140_arg_1 = var_139; [L442] SORT_1 var_140 = var_140_arg_0 & var_140_arg_1; [L443] SORT_1 var_143_arg_0 = state_141; [L444] var_143_arg_0 = var_143_arg_0 & mask_SORT_1 [L445] SORT_10 var_143 = var_143_arg_0; [L446] SORT_10 var_144_arg_0 = var_143; [L447] SORT_10 var_144_arg_1 = var_26; [L448] SORT_1 var_144 = var_144_arg_0 == var_144_arg_1; [L449] SORT_1 var_145_arg_0 = var_144; [L450] SORT_1 var_145 = ~var_145_arg_0; [L451] SORT_1 var_146_arg_0 = state_135; [L452] var_146_arg_0 = var_146_arg_0 & mask_SORT_1 [L453] SORT_10 var_146 = var_146_arg_0; [L454] SORT_10 var_147_arg_0 = var_146; [L455] SORT_10 var_147_arg_1 = var_26; [L456] SORT_1 var_147 = var_147_arg_0 == var_147_arg_1; [L457] SORT_1 var_148_arg_0 = var_145; [L458] SORT_1 var_148_arg_1 = var_147; [L459] SORT_1 var_148 = var_148_arg_0 | var_148_arg_1; [L460] SORT_1 var_149_arg_0 = var_140; [L461] SORT_1 var_149_arg_1 = var_148; [L462] SORT_1 var_149 = var_149_arg_0 & var_149_arg_1; [L463] SORT_1 var_150_arg_0 = state_38; [L464] var_150_arg_0 = var_150_arg_0 & mask_SORT_1 [L465] SORT_10 var_150 = var_150_arg_0; [L466] SORT_10 var_151_arg_0 = var_150; [L467] SORT_10 var_151_arg_1 = var_12; [L468] SORT_1 var_151 = var_151_arg_0 == var_151_arg_1; [L469] SORT_1 var_152_arg_0 = var_151; [L470] SORT_1 var_152 = ~var_152_arg_0; [L471] SORT_1 var_155_arg_0 = state_153; [L472] var_155_arg_0 = var_155_arg_0 & mask_SORT_1 [L473] SORT_10 var_155 = var_155_arg_0; [L474] SORT_10 var_156_arg_0 = var_155; [L475] SORT_10 var_156_arg_1 = var_12; [L476] SORT_1 var_156 = var_156_arg_0 == var_156_arg_1; [L477] SORT_1 var_157_arg_0 = var_152; [L478] SORT_1 var_157_arg_1 = var_156; [L479] SORT_1 var_157 = var_157_arg_0 | var_157_arg_1; [L480] SORT_1 var_158_arg_0 = var_149; [L481] SORT_1 var_158_arg_1 = var_157; [L482] SORT_1 var_158 = var_158_arg_0 & var_158_arg_1; [L483] SORT_1 var_159_arg_0 = state_153; [L484] var_159_arg_0 = var_159_arg_0 & mask_SORT_1 [L485] SORT_10 var_159 = var_159_arg_0; [L486] SORT_10 var_160_arg_0 = var_159; [L487] SORT_10 var_160_arg_1 = var_12; [L488] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L489] SORT_1 var_161_arg_0 = var_160; [L490] SORT_1 var_161 = ~var_161_arg_0; [L491] SORT_1 var_162_arg_0 = state_15; [L492] var_162_arg_0 = var_162_arg_0 & mask_SORT_1 [L493] SORT_10 var_162 = var_162_arg_0; [L494] SORT_10 var_163_arg_0 = var_162; [L495] SORT_10 var_163_arg_1 = var_12; [L496] SORT_1 var_163 = var_163_arg_0 == var_163_arg_1; [L497] SORT_1 var_164_arg_0 = var_161; [L498] SORT_1 var_164_arg_1 = var_163; [L499] SORT_1 var_164 = var_164_arg_0 | var_164_arg_1; [L500] SORT_1 var_165_arg_0 = var_158; [L501] SORT_1 var_165_arg_1 = var_164; [L502] SORT_1 var_165 = var_165_arg_0 & var_165_arg_1; [L503] SORT_1 var_168_arg_0 = state_166; [L504] var_168_arg_0 = var_168_arg_0 & mask_SORT_1 [L505] SORT_10 var_168 = var_168_arg_0; [L506] SORT_10 var_169_arg_0 = var_168; [L507] SORT_10 var_169_arg_1 = var_12; [L508] SORT_1 var_169 = var_169_arg_0 == var_169_arg_1; [L509] SORT_1 var_170_arg_0 = var_169; [L510] SORT_1 var_170 = ~var_170_arg_0; [L511] SORT_1 var_171_arg_0 = state_43; [L512] var_171_arg_0 = var_171_arg_0 & mask_SORT_1 [L513] SORT_10 var_171 = var_171_arg_0; [L514] SORT_10 var_172_arg_0 = var_171; [L515] SORT_10 var_172_arg_1 = var_12; [L516] SORT_1 var_172 = var_172_arg_0 == var_172_arg_1; [L517] SORT_1 var_173_arg_0 = var_170; [L518] SORT_1 var_173_arg_1 = var_172; [L519] SORT_1 var_173 = var_173_arg_0 | var_173_arg_1; [L520] SORT_1 var_174_arg_0 = var_165; [L521] SORT_1 var_174_arg_1 = var_173; [L522] SORT_1 var_174 = var_174_arg_0 & var_174_arg_1; [L523] SORT_1 var_175_arg_0 = state_130; [L524] var_175_arg_0 = var_175_arg_0 & mask_SORT_1 [L525] SORT_10 var_175 = var_175_arg_0; [L526] SORT_10 var_176_arg_0 = var_175; [L527] SORT_10 var_176_arg_1 = var_26; [L528] SORT_1 var_176 = var_176_arg_0 == var_176_arg_1; [L529] SORT_1 var_179_arg_0 = state_177; [L530] var_179_arg_0 = var_179_arg_0 & mask_SORT_1 [L531] SORT_10 var_179 = var_179_arg_0; [L532] SORT_10 var_180_arg_0 = var_179; [L533] SORT_10 var_180_arg_1 = var_26; [L534] SORT_1 var_180 = var_180_arg_0 == var_180_arg_1; [L535] SORT_1 var_181_arg_0 = var_176; [L536] SORT_1 var_181_arg_1 = var_180; [L537] SORT_1 var_181 = var_181_arg_0 | var_181_arg_1; [L538] SORT_1 var_182_arg_0 = var_174; [L539] SORT_1 var_182_arg_1 = var_181; [L540] SORT_1 var_182 = var_182_arg_0 & var_182_arg_1; [L541] SORT_3 var_186_arg_0 = state_184; [L542] var_186_arg_0 = var_186_arg_0 & mask_SORT_3 [L543] SORT_10 var_186 = var_186_arg_0; [L544] SORT_10 var_187_arg_0 = var_186; [L545] SORT_10 var_187_arg_1 = var_26; [L546] SORT_1 var_187 = var_187_arg_0 == var_187_arg_1; [L547] SORT_1 var_188_arg_0 = state_15; [L548] var_188_arg_0 = var_188_arg_0 & mask_SORT_1 [L549] SORT_10 var_188 = var_188_arg_0; [L550] SORT_10 var_189_arg_0 = var_188; [L551] SORT_10 var_189_arg_1 = var_12; [L552] SORT_1 var_189 = var_189_arg_0 == var_189_arg_1; [L553] SORT_1 var_190_arg_0 = var_187; [L554] SORT_1 var_190_arg_1 = var_189; [L555] SORT_1 var_190 = var_190_arg_0 | var_190_arg_1; [L556] SORT_1 var_191_arg_0 = var_182; [L557] SORT_1 var_191_arg_1 = var_190; [L558] SORT_1 var_191 = var_191_arg_0 & var_191_arg_1; [L559] SORT_1 var_194_arg_0 = var_191; [L560] SORT_1 var_194 = ~var_194_arg_0; [L561] SORT_1 var_195_arg_0 = var_122; [L562] SORT_1 var_195_arg_1 = var_194; [L563] SORT_1 var_195 = var_195_arg_0 & var_195_arg_1; [L564] var_195 = var_195 & mask_SORT_1 [L565] SORT_1 bad_196_arg_0 = var_195; [L566] CALL __VERIFIER_assert(!(bad_196_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: 11.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 8.3s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 03:43:22,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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 a98e282f97a500bd5508bb46aaa1001023120ce878501f3889727b27d17dfa18 --- 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 03:43:24,637 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:43:24,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:43:24,668 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:43:24,668 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:43:24,670 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:43:24,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:43:24,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:43:24,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:43:24,677 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:43:24,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:43:24,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:43:24,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:43:24,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:43:24,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:43:24,684 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:43:24,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:43:24,686 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:43:24,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:43:24,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:43:24,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:43:24,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:43:24,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:43:24,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:43:24,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:43:24,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:43:24,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:43:24,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:43:24,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:43:24,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:43:24,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:43:24,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:43:24,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:43:24,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:43:24,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:43:24,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:43:24,717 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:43:24,718 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:43:24,718 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:43:24,719 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:43:24,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:43:24,721 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 03:43:24,745 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:43:24,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:43:24,745 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:43:24,746 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:43:24,746 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:43:24,747 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:43:24,747 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:43:24,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:43:24,747 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:43:24,748 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:43:24,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:43:24,748 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:43:24,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:43:24,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:43:24,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:43:24,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:43:24,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:43:24,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 03:43:24,751 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 03:43:24,751 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 03:43:24,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:43:24,751 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:43:24,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:43:24,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:43:24,752 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 03:43:24,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:43:24,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:43:24,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:43:24,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:43:24,753 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:43:24,754 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 03:43:24,754 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 03:43:24,754 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:43:24,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:43:24,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 03:43:24,755 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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a98e282f97a500bd5508bb46aaa1001023120ce878501f3889727b27d17dfa18 [2022-11-03 03:43:25,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:43:25,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:43:25,234 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:43:25,235 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:43:25,236 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:43:25,238 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c [2022-11-03 03:43:25,315 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data/d0507f9a3/2f1cb24d227b45999769ecab79f06337/FLAG1153d4b8f [2022-11-03 03:43:25,928 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:43:25,929 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c [2022-11-03 03:43:25,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data/d0507f9a3/2f1cb24d227b45999769ecab79f06337/FLAG1153d4b8f [2022-11-03 03:43:26,229 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/data/d0507f9a3/2f1cb24d227b45999769ecab79f06337 [2022-11-03 03:43:26,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:43:26,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:43:26,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:43:26,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:43:26,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:43:26,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:26,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318fc9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26, skipping insertion in model container [2022-11-03 03:43:26,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:26,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:43:26,335 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:43:26,515 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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c[1107,1120] [2022-11-03 03:43:26,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:43:26,771 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:43:26,782 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_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.itc99_b13.c[1107,1120] [2022-11-03 03:43:26,924 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:43:26,938 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:43:26,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26 WrapperNode [2022-11-03 03:43:26,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:43:26,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:43:26,940 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:43:26,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:43:26,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:26,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,071 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1147 [2022-11-03 03:43:27,075 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:43:27,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:43:27,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:43:27,076 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:43:27,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,138 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:43:27,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:43:27,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:43:27,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:43:27,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (1/1) ... [2022-11-03 03:43:27,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:43:27,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:43:27,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:43:27,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:43:27,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:43:27,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:43:27,652 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:43:27,654 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:43:28,790 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:43:28,799 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:43:28,806 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:43:28,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:28 BoogieIcfgContainer [2022-11-03 03:43:28,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:43:28,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:43:28,813 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:43:28,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:43:28,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:43:26" (1/3) ... [2022-11-03 03:43:28,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8235f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:28, skipping insertion in model container [2022-11-03 03:43:28,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:43:26" (2/3) ... [2022-11-03 03:43:28,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8235f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:43:28, skipping insertion in model container [2022-11-03 03:43:28,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:43:28" (3/3) ... [2022-11-03 03:43:28,821 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.itc99_b13.c [2022-11-03 03:43:28,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:43:28,842 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:43:28,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:43:28,913 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;@59c177b1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:43:28,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:43:28,918 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 124 states have internal predecessors, (184), 0 states have call successors, (0), 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 03:43:28,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-03 03:43:28,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:28,925 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-03 03:43:28,926 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:28,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:28,932 INFO L85 PathProgramCache]: Analyzing trace with hash 28698761, now seen corresponding path program 1 times [2022-11-03 03:43:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:28,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300376504] [2022-11-03 03:43:28,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:28,949 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:28,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:28,954 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:28,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 03:43:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:29,414 WARN L261 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 277 conjunts are in the unsatisfiable core [2022-11-03 03:43:29,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:34,183 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 03:43:34,183 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:34,184 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:34,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300376504] [2022-11-03 03:43:34,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300376504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:34,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:34,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:34,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464377608] [2022-11-03 03:43:34,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:34,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:34,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:34,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:34,223 INFO L87 Difference]: Start difference. First operand has 125 states, 123 states have (on average 1.4959349593495934) internal successors, (184), 124 states have internal predecessors, (184), 0 states have call successors, (0), 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 03:43:34,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:34,774 INFO L93 Difference]: Finished difference Result 362 states and 543 transitions. [2022-11-03 03:43:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:34,778 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 03:43:34,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:34,794 INFO L225 Difference]: With dead ends: 362 [2022-11-03 03:43:34,798 INFO L226 Difference]: Without dead ends: 239 [2022-11-03 03:43:34,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:43:34,807 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 345 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:34,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 446 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 03:43:34,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2022-11-03 03:43:34,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 123. [2022-11-03 03:43:34,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.4754098360655739) internal successors, (180), 122 states have internal predecessors, (180), 0 states have call successors, (0), 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 03:43:34,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 180 transitions. [2022-11-03 03:43:34,868 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 180 transitions. Word has length 5 [2022-11-03 03:43:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:34,869 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 180 transitions. [2022-11-03 03:43:34,869 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 03:43:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 180 transitions. [2022-11-03 03:43:34,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:34,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:34,876 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] [2022-11-03 03:43:34,894 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:35,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:35,092 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:35,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:35,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1660830703, now seen corresponding path program 1 times [2022-11-03 03:43:35,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:35,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1707905301] [2022-11-03 03:43:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:35,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:35,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:35,096 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:35,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 03:43:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:35,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:35,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:35,768 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 03:43:35,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:35,768 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:35,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1707905301] [2022-11-03 03:43:35,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1707905301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:35,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:35,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:35,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248643636] [2022-11-03 03:43:35,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:35,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:35,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:35,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:35,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:35,772 INFO L87 Difference]: Start difference. First operand 123 states and 180 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:35,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:35,934 INFO L93 Difference]: Finished difference Result 475 states and 702 transitions. [2022-11-03 03:43:35,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:35,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:35,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:35,937 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:35,937 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:35,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:35,939 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 513 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:35,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 690 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:35,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:35,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 125. [2022-11-03 03:43:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 124 states have (on average 1.467741935483871) internal successors, (182), 124 states have internal predecessors, (182), 0 states have call successors, (0), 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 03:43:35,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 182 transitions. [2022-11-03 03:43:35,965 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 182 transitions. Word has length 122 [2022-11-03 03:43:35,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:35,966 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 182 transitions. [2022-11-03 03:43:35,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 182 transitions. [2022-11-03 03:43:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:35,973 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:35,973 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] [2022-11-03 03:43:36,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:36,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:36,191 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:36,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:36,192 INFO L85 PathProgramCache]: Analyzing trace with hash -61171983, now seen corresponding path program 1 times [2022-11-03 03:43:36,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:36,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1964831819] [2022-11-03 03:43:36,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:36,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:36,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:36,195 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:36,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 03:43:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:36,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:43:36,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:36,892 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 03:43:36,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:36,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:36,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1964831819] [2022-11-03 03:43:36,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1964831819] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:36,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:36,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:43:36,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235460962] [2022-11-03 03:43:36,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:36,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:43:36,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:43:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:43:36,895 INFO L87 Difference]: Start difference. First operand 125 states and 182 transitions. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:37,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:37,217 INFO L93 Difference]: Finished difference Result 364 states and 535 transitions. [2022-11-03 03:43:37,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:43:37,218 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:37,220 INFO L225 Difference]: With dead ends: 364 [2022-11-03 03:43:37,220 INFO L226 Difference]: Without dead ends: 245 [2022-11-03 03:43:37,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:43:37,222 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 512 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 512 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:37,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [512 Valid, 824 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 03:43:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-03 03:43:37,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 127. [2022-11-03 03:43:37,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.4603174603174602) internal successors, (184), 126 states have internal predecessors, (184), 0 states have call successors, (0), 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 03:43:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 184 transitions. [2022-11-03 03:43:37,238 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 184 transitions. Word has length 122 [2022-11-03 03:43:37,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:37,238 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 184 transitions. [2022-11-03 03:43:37,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:37,239 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 184 transitions. [2022-11-03 03:43:37,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:37,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:37,241 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] [2022-11-03 03:43:37,268 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:37,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:37,469 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:37,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:37,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1990104209, now seen corresponding path program 1 times [2022-11-03 03:43:37,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:37,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548186063] [2022-11-03 03:43:37,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:37,472 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:37,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:37,476 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:37,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 03:43:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:38,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:38,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:38,232 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 03:43:38,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:38,233 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:38,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548186063] [2022-11-03 03:43:38,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548186063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:38,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:38,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:38,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362020230] [2022-11-03 03:43:38,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:38,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:38,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:38,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:38,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:38,239 INFO L87 Difference]: Start difference. First operand 127 states and 184 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:38,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:38,414 INFO L93 Difference]: Finished difference Result 475 states and 700 transitions. [2022-11-03 03:43:38,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:38,414 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:38,416 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:38,417 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:38,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:38,419 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 501 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:38,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 673 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:38,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:38,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 129. [2022-11-03 03:43:38,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 128 states have (on average 1.453125) internal successors, (186), 128 states have internal predecessors, (186), 0 states have call successors, (0), 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 03:43:38,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 186 transitions. [2022-11-03 03:43:38,429 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 186 transitions. Word has length 122 [2022-11-03 03:43:38,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:38,429 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 186 transitions. [2022-11-03 03:43:38,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:38,430 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 186 transitions. [2022-11-03 03:43:38,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:38,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:38,432 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] [2022-11-03 03:43:38,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:38,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:38,656 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:38,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash -262959247, now seen corresponding path program 1 times [2022-11-03 03:43:38,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:38,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1580446996] [2022-11-03 03:43:38,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:38,659 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:38,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:38,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:38,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 03:43:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:39,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:39,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:39,324 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 03:43:39,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:39,325 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:39,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1580446996] [2022-11-03 03:43:39,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1580446996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:39,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:39,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:39,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293435843] [2022-11-03 03:43:39,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:39,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:39,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:39,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:39,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:39,327 INFO L87 Difference]: Start difference. First operand 129 states and 186 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:39,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:39,505 INFO L93 Difference]: Finished difference Result 475 states and 699 transitions. [2022-11-03 03:43:39,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:39,506 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:39,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:39,508 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:39,508 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:39,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:39,510 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 495 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:39,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 672 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:39,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:39,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 131. [2022-11-03 03:43:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.4461538461538461) internal successors, (188), 130 states have internal predecessors, (188), 0 states have call successors, (0), 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 03:43:39,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 188 transitions. [2022-11-03 03:43:39,520 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 188 transitions. Word has length 122 [2022-11-03 03:43:39,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:39,520 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 188 transitions. [2022-11-03 03:43:39,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:39,521 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 188 transitions. [2022-11-03 03:43:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:39,522 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:39,522 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] [2022-11-03 03:43:39,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:39,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:39,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:39,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:39,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1910322189, now seen corresponding path program 1 times [2022-11-03 03:43:39,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:39,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879846178] [2022-11-03 03:43:39,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:39,748 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:39,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:39,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:39,750 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 03:43:40,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:40,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:40,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:40,388 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 03:43:40,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:40,390 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:40,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879846178] [2022-11-03 03:43:40,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879846178] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:40,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:40,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:40,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313647624] [2022-11-03 03:43:40,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:40,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:40,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:40,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:40,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:40,399 INFO L87 Difference]: Start difference. First operand 131 states and 188 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:40,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:40,556 INFO L93 Difference]: Finished difference Result 475 states and 698 transitions. [2022-11-03 03:43:40,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:40,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:40,558 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:40,558 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:40,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:40,560 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 484 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 484 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:40,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [484 Valid, 677 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:40,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 135. [2022-11-03 03:43:40,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.4402985074626866) internal successors, (193), 134 states have internal predecessors, (193), 0 states have call successors, (0), 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 03:43:40,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 193 transitions. [2022-11-03 03:43:40,568 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 193 transitions. Word has length 122 [2022-11-03 03:43:40,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:40,569 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 193 transitions. [2022-11-03 03:43:40,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:40,569 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 193 transitions. [2022-11-03 03:43:40,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:40,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:40,571 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] [2022-11-03 03:43:40,597 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-03 03:43:40,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:40,787 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:40,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:40,788 INFO L85 PathProgramCache]: Analyzing trace with hash 242784629, now seen corresponding path program 1 times [2022-11-03 03:43:40,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:40,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395717059] [2022-11-03 03:43:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:40,789 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:40,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:40,790 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:40,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 03:43:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:41,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:41,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:41,426 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 03:43:41,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:41,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:41,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395717059] [2022-11-03 03:43:41,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395717059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:41,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:41,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:41,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003453470] [2022-11-03 03:43:41,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:41,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:41,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:41,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:41,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:41,429 INFO L87 Difference]: Start difference. First operand 135 states and 193 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:41,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:41,604 INFO L93 Difference]: Finished difference Result 475 states and 697 transitions. [2022-11-03 03:43:41,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:41,605 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:41,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:41,607 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:41,607 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:41,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:41,608 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 473 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 473 SdHoareTripleChecker+Valid, 670 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:41,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [473 Valid, 670 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:41,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:41,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 139. [2022-11-03 03:43:41,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 1.434782608695652) internal successors, (198), 138 states have internal predecessors, (198), 0 states have call successors, (0), 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 03:43:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2022-11-03 03:43:41,615 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 122 [2022-11-03 03:43:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:41,616 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2022-11-03 03:43:41,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2022-11-03 03:43:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:41,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:41,618 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] [2022-11-03 03:43:41,648 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:41,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:41,840 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:41,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:41,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1790609417, now seen corresponding path program 1 times [2022-11-03 03:43:41,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:41,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [651260815] [2022-11-03 03:43:41,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:41,842 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:41,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:41,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:41,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 03:43:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:42,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:42,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:42,510 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 03:43:42,510 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:42,510 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:42,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [651260815] [2022-11-03 03:43:42,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [651260815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:42,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:42,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:42,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893012572] [2022-11-03 03:43:42,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:42,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:42,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:42,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:42,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:42,513 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:42,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:42,673 INFO L93 Difference]: Finished difference Result 475 states and 696 transitions. [2022-11-03 03:43:42,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:42,673 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:42,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:42,675 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:42,675 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:42,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:42,676 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 462 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:42,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 675 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:42,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 143. [2022-11-03 03:43:42,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4295774647887325) internal successors, (203), 142 states have internal predecessors, (203), 0 states have call successors, (0), 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 03:43:42,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 203 transitions. [2022-11-03 03:43:42,686 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 203 transitions. Word has length 122 [2022-11-03 03:43:42,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:42,687 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 203 transitions. [2022-11-03 03:43:42,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:42,687 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 203 transitions. [2022-11-03 03:43:42,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:42,688 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:42,689 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] [2022-11-03 03:43:42,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:42,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:42,905 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:42,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:42,905 INFO L85 PathProgramCache]: Analyzing trace with hash -759568519, now seen corresponding path program 1 times [2022-11-03 03:43:42,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:42,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663896091] [2022-11-03 03:43:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:42,906 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:42,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:42,907 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:42,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 03:43:43,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:43,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:43,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:43,516 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 03:43:43,516 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:43,516 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:43,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663896091] [2022-11-03 03:43:43,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663896091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:43,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:43,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:43,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945650927] [2022-11-03 03:43:43,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:43,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:43,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:43,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:43,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:43,519 INFO L87 Difference]: Start difference. First operand 143 states and 203 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:43,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:43,582 INFO L93 Difference]: Finished difference Result 475 states and 695 transitions. [2022-11-03 03:43:43,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:43,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:43,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:43,587 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:43,587 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:43,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:43,590 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 456 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:43,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 671 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:43:43,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:43,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 145. [2022-11-03 03:43:43,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.4236111111111112) internal successors, (205), 144 states have internal predecessors, (205), 0 states have call successors, (0), 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 03:43:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 205 transitions. [2022-11-03 03:43:43,597 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 205 transitions. Word has length 122 [2022-11-03 03:43:43,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:43,598 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 205 transitions. [2022-11-03 03:43:43,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 205 transitions. [2022-11-03 03:43:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:43,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:43,600 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] [2022-11-03 03:43:43,628 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:43,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:43,823 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:43,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:43,823 INFO L85 PathProgramCache]: Analyzing trace with hash 841502587, now seen corresponding path program 1 times [2022-11-03 03:43:43,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:43,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [450509029] [2022-11-03 03:43:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:43,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:43,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:43,826 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:43,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 03:43:44,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:44,401 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:43:44,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:44,562 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 03:43:44,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:44,562 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:44,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [450509029] [2022-11-03 03:43:44,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [450509029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:44,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:44,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:44,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974847130] [2022-11-03 03:43:44,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:44,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:44,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:44,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:44,565 INFO L87 Difference]: Start difference. First operand 145 states and 205 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:44,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:44,739 INFO L93 Difference]: Finished difference Result 475 states and 694 transitions. [2022-11-03 03:43:44,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:44,740 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:44,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:44,741 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:44,741 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:44,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:44,743 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 450 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:44,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 682 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:44,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 147. [2022-11-03 03:43:44,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.417808219178082) internal successors, (207), 146 states have internal predecessors, (207), 0 states have call successors, (0), 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 03:43:44,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 207 transitions. [2022-11-03 03:43:44,749 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 207 transitions. Word has length 122 [2022-11-03 03:43:44,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:44,750 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 207 transitions. [2022-11-03 03:43:44,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 207 transitions. [2022-11-03 03:43:44,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:44,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:44,751 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] [2022-11-03 03:43:44,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:44,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:44,967 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:44,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:44,968 INFO L85 PathProgramCache]: Analyzing trace with hash -2102079491, now seen corresponding path program 1 times [2022-11-03 03:43:44,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:44,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [642308972] [2022-11-03 03:43:44,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:44,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:44,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:44,970 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:44,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 03:43:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:45,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:45,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:45,608 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 03:43:45,608 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:45,608 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:45,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [642308972] [2022-11-03 03:43:45,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [642308972] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:45,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:45,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:45,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827714576] [2022-11-03 03:43:45,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:45,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:45,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:45,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:45,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:45,611 INFO L87 Difference]: Start difference. First operand 147 states and 207 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:45,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:45,802 INFO L93 Difference]: Finished difference Result 475 states and 693 transitions. [2022-11-03 03:43:45,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:45,803 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:45,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:45,804 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:45,804 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:45,805 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:45,805 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 444 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:45,806 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 660 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:45,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:45,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 149. [2022-11-03 03:43:45,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.412162162162162) internal successors, (209), 148 states have internal predecessors, (209), 0 states have call successors, (0), 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 03:43:45,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 209 transitions. [2022-11-03 03:43:45,812 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 209 transitions. Word has length 122 [2022-11-03 03:43:45,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:45,812 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 209 transitions. [2022-11-03 03:43:45,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:45,813 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 209 transitions. [2022-11-03 03:43:45,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:45,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:45,814 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] [2022-11-03 03:43:45,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:46,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:46,027 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:46,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:46,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1309378815, now seen corresponding path program 1 times [2022-11-03 03:43:46,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:46,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857941841] [2022-11-03 03:43:46,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:46,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:46,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:46,030 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:46,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 03:43:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:46,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:46,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:46,651 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 03:43:46,651 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:46,652 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:46,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857941841] [2022-11-03 03:43:46,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857941841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:46,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:46,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:46,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871103797] [2022-11-03 03:43:46,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:46,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:46,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:46,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:46,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:46,654 INFO L87 Difference]: Start difference. First operand 149 states and 209 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:46,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:46,830 INFO L93 Difference]: Finished difference Result 475 states and 692 transitions. [2022-11-03 03:43:46,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:46,831 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:46,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:46,833 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:46,833 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:46,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:46,834 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 438 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:46,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 659 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 151. [2022-11-03 03:43:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 1.4066666666666667) internal successors, (211), 150 states have internal predecessors, (211), 0 states have call successors, (0), 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 03:43:46,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 211 transitions. [2022-11-03 03:43:46,842 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 211 transitions. Word has length 122 [2022-11-03 03:43:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:46,842 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 211 transitions. [2022-11-03 03:43:46,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:46,843 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 211 transitions. [2022-11-03 03:43:46,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:46,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:46,845 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] [2022-11-03 03:43:46,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:47,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:47,059 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:47,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:47,060 INFO L85 PathProgramCache]: Analyzing trace with hash -631203199, now seen corresponding path program 1 times [2022-11-03 03:43:47,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:47,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469701960] [2022-11-03 03:43:47,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:47,061 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:47,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:47,062 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:47,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 03:43:47,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:47,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:47,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:47,681 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 03:43:47,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:47,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469701960] [2022-11-03 03:43:47,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469701960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:47,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:47,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:47,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404352756] [2022-11-03 03:43:47,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:47,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:47,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:47,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:47,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:47,684 INFO L87 Difference]: Start difference. First operand 151 states and 211 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:47,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:47,747 INFO L93 Difference]: Finished difference Result 475 states and 691 transitions. [2022-11-03 03:43:47,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:47,748 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:47,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:47,751 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:47,751 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:47,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:47,752 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 432 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:47,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [432 Valid, 667 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:43:47,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:47,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 153. [2022-11-03 03:43:47,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 1.4013157894736843) internal successors, (213), 152 states have internal predecessors, (213), 0 states have call successors, (0), 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 03:43:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 213 transitions. [2022-11-03 03:43:47,760 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 213 transitions. Word has length 122 [2022-11-03 03:43:47,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:47,760 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 213 transitions. [2022-11-03 03:43:47,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 213 transitions. [2022-11-03 03:43:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:47,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:47,762 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] [2022-11-03 03:43:47,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:47,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:47,975 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:47,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:47,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1401936765, now seen corresponding path program 1 times [2022-11-03 03:43:47,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:47,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [807134069] [2022-11-03 03:43:47,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:47,976 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:47,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:47,977 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:47,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 03:43:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:48,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:48,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:48,560 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 03:43:48,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:48,560 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:48,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [807134069] [2022-11-03 03:43:48,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [807134069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:48,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:48,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:48,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586561555] [2022-11-03 03:43:48,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:48,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:48,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:48,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:48,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:48,562 INFO L87 Difference]: Start difference. First operand 153 states and 213 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:48,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:48,698 INFO L93 Difference]: Finished difference Result 475 states and 690 transitions. [2022-11-03 03:43:48,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:48,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:48,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:48,700 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:48,700 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:48,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:48,701 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 426 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:48,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 675 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:48,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:48,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 155. [2022-11-03 03:43:48,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 154 states have (on average 1.396103896103896) internal successors, (215), 154 states have internal predecessors, (215), 0 states have call successors, (0), 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 03:43:48,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 215 transitions. [2022-11-03 03:43:48,707 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 215 transitions. Word has length 122 [2022-11-03 03:43:48,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:48,708 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 215 transitions. [2022-11-03 03:43:48,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:48,708 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 215 transitions. [2022-11-03 03:43:48,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:48,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:48,709 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] [2022-11-03 03:43:48,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:48,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:48,933 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:48,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:48,933 INFO L85 PathProgramCache]: Analyzing trace with hash -1988212987, now seen corresponding path program 1 times [2022-11-03 03:43:48,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:48,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1392515181] [2022-11-03 03:43:48,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:48,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:48,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:48,935 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:48,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 03:43:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:49,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:49,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:49,513 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 03:43:49,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:49,514 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:49,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1392515181] [2022-11-03 03:43:49,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1392515181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:49,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:49,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:49,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744198735] [2022-11-03 03:43:49,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:49,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:49,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:49,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:49,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:49,516 INFO L87 Difference]: Start difference. First operand 155 states and 215 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:49,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:49,572 INFO L93 Difference]: Finished difference Result 475 states and 689 transitions. [2022-11-03 03:43:49,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:49,572 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:49,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:49,574 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:49,574 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:49,575 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:49,575 INFO L413 NwaCegarLoop]: 214 mSDtfsCounter, 410 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:49,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 665 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:43:49,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:49,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 161. [2022-11-03 03:43:49,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 1.39375) internal successors, (223), 160 states have internal predecessors, (223), 0 states have call successors, (0), 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 03:43:49,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 223 transitions. [2022-11-03 03:43:49,582 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 223 transitions. Word has length 122 [2022-11-03 03:43:49,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:49,582 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 223 transitions. [2022-11-03 03:43:49,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:49,583 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 223 transitions. [2022-11-03 03:43:49,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:49,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:49,584 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] [2022-11-03 03:43:49,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:49,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:49,799 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:49,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:49,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1248916231, now seen corresponding path program 1 times [2022-11-03 03:43:49,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:49,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970090496] [2022-11-03 03:43:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:49,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:49,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:49,802 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:49,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 03:43:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:50,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:50,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:50,412 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 03:43:50,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:50,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970090496] [2022-11-03 03:43:50,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970090496] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:50,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:50,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:50,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947575775] [2022-11-03 03:43:50,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:50,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:50,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:50,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:50,415 INFO L87 Difference]: Start difference. First operand 161 states and 223 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:50,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:50,575 INFO L93 Difference]: Finished difference Result 475 states and 688 transitions. [2022-11-03 03:43:50,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:50,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:50,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:50,577 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:50,577 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:50,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:50,579 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 404 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:50,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 673 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:50,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:50,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 163. [2022-11-03 03:43:50,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.3888888888888888) internal successors, (225), 162 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 03:43:50,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 225 transitions. [2022-11-03 03:43:50,589 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 225 transitions. Word has length 122 [2022-11-03 03:43:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:50,589 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 225 transitions. [2022-11-03 03:43:50,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:50,589 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 225 transitions. [2022-11-03 03:43:50,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:50,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:50,591 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] [2022-11-03 03:43:50,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:50,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:50,813 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:50,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1489155977, now seen corresponding path program 1 times [2022-11-03 03:43:50,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:50,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360661001] [2022-11-03 03:43:50,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:50,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:50,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:50,816 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:50,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 03:43:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:51,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:51,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:51,414 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 03:43:51,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:51,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:51,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360661001] [2022-11-03 03:43:51,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360661001] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:51,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:51,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:51,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722799630] [2022-11-03 03:43:51,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:51,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:51,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:51,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:51,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:51,417 INFO L87 Difference]: Start difference. First operand 163 states and 225 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:51,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:51,481 INFO L93 Difference]: Finished difference Result 475 states and 687 transitions. [2022-11-03 03:43:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:51,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:51,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:51,483 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:51,483 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:51,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:51,484 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 393 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:51,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 663 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:51,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:51,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 167. [2022-11-03 03:43:51,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 166 states have (on average 1.3855421686746987) internal successors, (230), 166 states have internal predecessors, (230), 0 states have call successors, (0), 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 03:43:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 230 transitions. [2022-11-03 03:43:51,491 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 230 transitions. Word has length 122 [2022-11-03 03:43:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:51,491 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 230 transitions. [2022-11-03 03:43:51,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 230 transitions. [2022-11-03 03:43:51,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:51,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:51,493 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] [2022-11-03 03:43:51,524 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:51,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:51,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:51,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:51,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1071706869, now seen corresponding path program 1 times [2022-11-03 03:43:51,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:51,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268218585] [2022-11-03 03:43:51,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:51,713 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:51,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:51,713 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:51,715 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 03:43:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:52,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:52,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:52,328 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 03:43:52,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:52,328 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:52,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268218585] [2022-11-03 03:43:52,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268218585] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:52,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:52,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:52,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714918538] [2022-11-03 03:43:52,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:52,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:52,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:52,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:52,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:52,331 INFO L87 Difference]: Start difference. First operand 167 states and 230 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:52,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:52,386 INFO L93 Difference]: Finished difference Result 475 states and 686 transitions. [2022-11-03 03:43:52,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:52,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:52,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:52,389 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:52,389 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:52,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:52,390 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 387 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:52,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 662 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:43:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:52,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 169. [2022-11-03 03:43:52,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 1.380952380952381) internal successors, (232), 168 states have internal predecessors, (232), 0 states have call successors, (0), 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 03:43:52,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 232 transitions. [2022-11-03 03:43:52,397 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 232 transitions. Word has length 122 [2022-11-03 03:43:52,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:52,397 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 232 transitions. [2022-11-03 03:43:52,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:52,397 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 232 transitions. [2022-11-03 03:43:52,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:52,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:52,399 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] [2022-11-03 03:43:52,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:52,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:52,621 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:52,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:52,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1312217869, now seen corresponding path program 1 times [2022-11-03 03:43:52,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:52,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966705113] [2022-11-03 03:43:52,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:52,623 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:52,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:52,624 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:52,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 03:43:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:53,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:53,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:53,234 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 03:43:53,234 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:53,234 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:53,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966705113] [2022-11-03 03:43:53,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966705113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:53,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:53,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:53,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256821885] [2022-11-03 03:43:53,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:53,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:53,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:53,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:53,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:53,237 INFO L87 Difference]: Start difference. First operand 169 states and 232 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:53,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:53,401 INFO L93 Difference]: Finished difference Result 475 states and 685 transitions. [2022-11-03 03:43:53,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:53,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:53,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:53,403 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:53,403 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:53,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:53,404 INFO L413 NwaCegarLoop]: 235 mSDtfsCounter, 371 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:53,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 673 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:53,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:53,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 175. [2022-11-03 03:43:53,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 174 states have (on average 1.3793103448275863) internal successors, (240), 174 states have internal predecessors, (240), 0 states have call successors, (0), 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 03:43:53,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 240 transitions. [2022-11-03 03:43:53,413 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 240 transitions. Word has length 122 [2022-11-03 03:43:53,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:53,413 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 240 transitions. [2022-11-03 03:43:53,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 240 transitions. [2022-11-03 03:43:53,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:53,414 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:53,414 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] [2022-11-03 03:43:53,444 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:53,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:53,631 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:53,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash 96064143, now seen corresponding path program 1 times [2022-11-03 03:43:53,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:53,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1722082618] [2022-11-03 03:43:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:53,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:53,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:53,634 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:53,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 03:43:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:54,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:54,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:54,243 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 03:43:54,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:54,244 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:54,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1722082618] [2022-11-03 03:43:54,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1722082618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:54,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:54,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:54,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46886156] [2022-11-03 03:43:54,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:54,246 INFO L87 Difference]: Start difference. First operand 175 states and 240 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:54,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:54,396 INFO L93 Difference]: Finished difference Result 475 states and 684 transitions. [2022-11-03 03:43:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:54,398 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:54,398 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:54,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:54,399 INFO L413 NwaCegarLoop]: 237 mSDtfsCounter, 360 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:54,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 663 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:54,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:54,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 179. [2022-11-03 03:43:54,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 1.3764044943820224) internal successors, (245), 178 states have internal predecessors, (245), 0 states have call successors, (0), 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 03:43:54,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 245 transitions. [2022-11-03 03:43:54,407 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 245 transitions. Word has length 122 [2022-11-03 03:43:54,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:54,407 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 245 transitions. [2022-11-03 03:43:54,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:54,408 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 245 transitions. [2022-11-03 03:43:54,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:54,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:54,409 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] [2022-11-03 03:43:54,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:54,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:54,632 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:54,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:54,632 INFO L85 PathProgramCache]: Analyzing trace with hash -321332463, now seen corresponding path program 1 times [2022-11-03 03:43:54,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:54,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765279144] [2022-11-03 03:43:54,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:54,633 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:54,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:54,634 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:54,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 03:43:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:55,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:55,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:55,250 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 03:43:55,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:55,250 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:55,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765279144] [2022-11-03 03:43:55,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765279144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:55,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:55,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:55,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341461649] [2022-11-03 03:43:55,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:55,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:55,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:55,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:55,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:55,253 INFO L87 Difference]: Start difference. First operand 179 states and 245 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:55,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:55,384 INFO L93 Difference]: Finished difference Result 475 states and 683 transitions. [2022-11-03 03:43:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:55,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:55,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:55,387 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:55,387 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:55,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:55,388 INFO L413 NwaCegarLoop]: 239 mSDtfsCounter, 354 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:55,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 662 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:43:55,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:55,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 181. [2022-11-03 03:43:55,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 1.3722222222222222) internal successors, (247), 180 states have internal predecessors, (247), 0 states have call successors, (0), 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 03:43:55,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 247 transitions. [2022-11-03 03:43:55,398 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 247 transitions. Word has length 122 [2022-11-03 03:43:55,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:55,398 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 247 transitions. [2022-11-03 03:43:55,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:55,399 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 247 transitions. [2022-11-03 03:43:55,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:55,399 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:55,400 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] [2022-11-03 03:43:55,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:55,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:55,622 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:55,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1640242195, now seen corresponding path program 1 times [2022-11-03 03:43:55,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:55,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [294172137] [2022-11-03 03:43:55,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:55,624 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:55,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:55,625 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:55,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 03:43:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:56,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:43:56,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:56,422 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 03:43:56,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:56,423 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:56,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [294172137] [2022-11-03 03:43:56,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [294172137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:56,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:56,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:56,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140629385] [2022-11-03 03:43:56,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:56,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:56,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:56,425 INFO L87 Difference]: Start difference. First operand 181 states and 247 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:56,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:56,632 INFO L93 Difference]: Finished difference Result 475 states and 682 transitions. [2022-11-03 03:43:56,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:56,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:56,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:56,634 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:56,634 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:56,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:56,635 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 348 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 348 SdHoareTripleChecker+Valid, 622 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:56,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [348 Valid, 622 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:56,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:56,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 183. [2022-11-03 03:43:56,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 1.3681318681318682) internal successors, (249), 182 states have internal predecessors, (249), 0 states have call successors, (0), 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 03:43:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 249 transitions. [2022-11-03 03:43:56,642 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 249 transitions. Word has length 122 [2022-11-03 03:43:56,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:56,642 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 249 transitions. [2022-11-03 03:43:56,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 249 transitions. [2022-11-03 03:43:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:56,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:56,643 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] [2022-11-03 03:43:56,672 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:56,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:56,859 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:56,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2094025323, now seen corresponding path program 1 times [2022-11-03 03:43:56,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:56,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420598941] [2022-11-03 03:43:56,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:56,860 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:56,860 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:56,861 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:56,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 03:43:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:57,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:43:57,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:57,550 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 03:43:57,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:57,550 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:57,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420598941] [2022-11-03 03:43:57,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420598941] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:57,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:57,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:43:57,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547436656] [2022-11-03 03:43:57,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:57,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:43:57,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:57,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:43:57,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:43:57,553 INFO L87 Difference]: Start difference. First operand 183 states and 249 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:57,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:57,767 INFO L93 Difference]: Finished difference Result 502 states and 719 transitions. [2022-11-03 03:43:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:43:57,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:57,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:57,769 INFO L225 Difference]: With dead ends: 502 [2022-11-03 03:43:57,769 INFO L226 Difference]: Without dead ends: 383 [2022-11-03 03:43:57,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:43:57,770 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 542 mSDsluCounter, 706 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 948 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:57,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 948 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-03 03:43:57,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 185. [2022-11-03 03:43:57,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.3641304347826086) internal successors, (251), 184 states have internal predecessors, (251), 0 states have call successors, (0), 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 03:43:57,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2022-11-03 03:43:57,777 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 122 [2022-11-03 03:43:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:57,778 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2022-11-03 03:43:57,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2022-11-03 03:43:57,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:57,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:57,779 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] [2022-11-03 03:43:57,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 03:43:58,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:58,002 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:58,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:58,002 INFO L85 PathProgramCache]: Analyzing trace with hash -833108073, now seen corresponding path program 1 times [2022-11-03 03:43:58,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:58,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [832006552] [2022-11-03 03:43:58,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:58,004 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:58,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:58,005 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:58,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 03:43:58,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:58,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:43:58,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:58,633 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 03:43:58,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:58,634 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:58,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [832006552] [2022-11-03 03:43:58,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [832006552] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:58,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:58,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:43:58,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106011039] [2022-11-03 03:43:58,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:58,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:43:58,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:58,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:43:58,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:43:58,636 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:58,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:43:58,824 INFO L93 Difference]: Finished difference Result 475 states and 680 transitions. [2022-11-03 03:43:58,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:43:58,824 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:43:58,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:43:58,826 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:43:58,826 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:43:58,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:43:58,827 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 336 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:43:58,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 647 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:43:58,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:43:58,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 187. [2022-11-03 03:43:58,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 1.3602150537634408) internal successors, (253), 186 states have internal predecessors, (253), 0 states have call successors, (0), 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 03:43:58,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 253 transitions. [2022-11-03 03:43:58,834 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 253 transitions. Word has length 122 [2022-11-03 03:43:58,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:43:58,835 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 253 transitions. [2022-11-03 03:43:58,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:43:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 253 transitions. [2022-11-03 03:43:58,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:43:58,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:43:58,836 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] [2022-11-03 03:43:58,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-03 03:43:59,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:43:59,051 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:43:59,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:43:59,051 INFO L85 PathProgramCache]: Analyzing trace with hash 553677337, now seen corresponding path program 1 times [2022-11-03 03:43:59,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:43:59,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1926844230] [2022-11-03 03:43:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:43:59,052 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:43:59,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:43:59,053 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:43:59,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 03:43:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:43:59,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:43:59,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:43:59,871 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 03:43:59,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:43:59,872 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:43:59,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1926844230] [2022-11-03 03:43:59,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1926844230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:43:59,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:43:59,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:43:59,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203522734] [2022-11-03 03:43:59,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:43:59,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:43:59,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:43:59,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:43:59,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:43:59,873 INFO L87 Difference]: Start difference. First operand 187 states and 253 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:00,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:00,086 INFO L93 Difference]: Finished difference Result 502 states and 717 transitions. [2022-11-03 03:44:00,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:44:00,086 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:00,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:00,088 INFO L225 Difference]: With dead ends: 502 [2022-11-03 03:44:00,088 INFO L226 Difference]: Without dead ends: 383 [2022-11-03 03:44:00,088 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:44:00,089 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 528 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 528 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:00,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [528 Valid, 940 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:44:00,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-03 03:44:00,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 189. [2022-11-03 03:44:00,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 1.3563829787234043) internal successors, (255), 188 states have internal predecessors, (255), 0 states have call successors, (0), 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 03:44:00,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 255 transitions. [2022-11-03 03:44:00,096 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 255 transitions. Word has length 122 [2022-11-03 03:44:00,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:00,096 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 255 transitions. [2022-11-03 03:44:00,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:00,097 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 255 transitions. [2022-11-03 03:44:00,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:00,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:00,098 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] [2022-11-03 03:44:00,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-03 03:44:00,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:00,311 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:00,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:00,311 INFO L85 PathProgramCache]: Analyzing trace with hash 997578011, now seen corresponding path program 1 times [2022-11-03 03:44:00,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:00,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [909832654] [2022-11-03 03:44:00,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:00,312 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:00,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:00,313 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:00,314 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 03:44:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:00,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:00,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:00,966 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 03:44:00,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:00,967 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:00,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [909832654] [2022-11-03 03:44:00,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [909832654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:00,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:00,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:00,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091678950] [2022-11-03 03:44:00,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:00,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:00,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:00,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:00,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:00,982 INFO L87 Difference]: Start difference. First operand 189 states and 255 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:01,151 INFO L93 Difference]: Finished difference Result 475 states and 678 transitions. [2022-11-03 03:44:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:01,152 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:01,153 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:01,153 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:01,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:01,154 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 319 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:01,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 645 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:44:01,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:01,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 193. [2022-11-03 03:44:01,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.3541666666666667) internal successors, (260), 192 states have internal predecessors, (260), 0 states have call successors, (0), 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 03:44:01,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 260 transitions. [2022-11-03 03:44:01,164 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 260 transitions. Word has length 122 [2022-11-03 03:44:01,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:01,164 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 260 transitions. [2022-11-03 03:44:01,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:01,165 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 260 transitions. [2022-11-03 03:44:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:01,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:01,167 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] [2022-11-03 03:44:01,185 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-03 03:44:01,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:01,371 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:01,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:01,371 INFO L85 PathProgramCache]: Analyzing trace with hash 982059293, now seen corresponding path program 1 times [2022-11-03 03:44:01,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:01,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1428449451] [2022-11-03 03:44:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:01,373 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:01,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:01,373 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:01,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 03:44:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:01,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 03:44:01,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:02,181 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 03:44:02,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:02,181 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:02,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1428449451] [2022-11-03 03:44:02,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1428449451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:02,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:02,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:02,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306417357] [2022-11-03 03:44:02,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:02,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:02,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:02,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:02,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:02,184 INFO L87 Difference]: Start difference. First operand 193 states and 260 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:02,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:02,407 INFO L93 Difference]: Finished difference Result 475 states and 677 transitions. [2022-11-03 03:44:02,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:02,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:02,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:02,409 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:02,409 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:02,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:02,410 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 313 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:02,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 617 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 03:44:02,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:02,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 195. [2022-11-03 03:44:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 1.3505154639175259) internal successors, (262), 194 states have internal predecessors, (262), 0 states have call successors, (0), 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 03:44:02,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 262 transitions. [2022-11-03 03:44:02,417 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 262 transitions. Word has length 122 [2022-11-03 03:44:02,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:02,417 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 262 transitions. [2022-11-03 03:44:02,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:02,418 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 262 transitions. [2022-11-03 03:44:02,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:02,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:02,419 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] [2022-11-03 03:44:02,449 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:02,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:02,619 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:02,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:02,620 INFO L85 PathProgramCache]: Analyzing trace with hash 628970911, now seen corresponding path program 1 times [2022-11-03 03:44:02,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:02,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1701147233] [2022-11-03 03:44:02,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:02,621 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:02,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:02,623 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:02,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 03:44:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:03,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:44:03,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:03,414 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 03:44:03,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:03,414 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:03,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1701147233] [2022-11-03 03:44:03,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1701147233] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:03,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:03,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:44:03,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8532688] [2022-11-03 03:44:03,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:03,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:44:03,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:03,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:44:03,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:44:03,416 INFO L87 Difference]: Start difference. First operand 195 states and 262 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:03,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:03,588 INFO L93 Difference]: Finished difference Result 502 states and 714 transitions. [2022-11-03 03:44:03,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:44:03,589 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:03,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:03,590 INFO L225 Difference]: With dead ends: 502 [2022-11-03 03:44:03,591 INFO L226 Difference]: Without dead ends: 383 [2022-11-03 03:44:03,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:44:03,592 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 502 mSDsluCounter, 670 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 925 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:03,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 925 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:44:03,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-03 03:44:03,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 197. [2022-11-03 03:44:03,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.346938775510204) internal successors, (264), 196 states have internal predecessors, (264), 0 states have call successors, (0), 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 03:44:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 264 transitions. [2022-11-03 03:44:03,599 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 264 transitions. Word has length 122 [2022-11-03 03:44:03,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:03,599 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 264 transitions. [2022-11-03 03:44:03,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 264 transitions. [2022-11-03 03:44:03,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:03,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:03,601 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] [2022-11-03 03:44:03,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-03 03:44:03,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:03,807 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:03,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1522457249, now seen corresponding path program 1 times [2022-11-03 03:44:03,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:03,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598323936] [2022-11-03 03:44:03,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:03,808 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:03,809 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:03,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 03:44:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:04,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:04,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:04,447 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 03:44:04,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:04,448 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:04,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598323936] [2022-11-03 03:44:04,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598323936] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:04,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:04,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:04,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336860857] [2022-11-03 03:44:04,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:04,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:04,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:04,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:04,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:04,449 INFO L87 Difference]: Start difference. First operand 197 states and 264 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:04,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:04,584 INFO L93 Difference]: Finished difference Result 475 states and 675 transitions. [2022-11-03 03:44:04,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:04,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:04,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:04,586 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:04,586 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:04,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:04,593 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 301 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:04,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 642 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:44:04,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:04,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 199. [2022-11-03 03:44:04,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 1.3434343434343434) internal successors, (266), 198 states have internal predecessors, (266), 0 states have call successors, (0), 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 03:44:04,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 266 transitions. [2022-11-03 03:44:04,600 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 266 transitions. Word has length 122 [2022-11-03 03:44:04,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:04,601 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 266 transitions. [2022-11-03 03:44:04,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 266 transitions. [2022-11-03 03:44:04,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:04,602 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:04,602 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] [2022-11-03 03:44:04,626 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:04,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:04,825 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:04,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:04,826 INFO L85 PathProgramCache]: Analyzing trace with hash 625063971, now seen corresponding path program 1 times [2022-11-03 03:44:04,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:04,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1838976293] [2022-11-03 03:44:04,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:04,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:04,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:04,828 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:04,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 03:44:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:05,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 03:44:05,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:05,504 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 03:44:05,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:05,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:05,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1838976293] [2022-11-03 03:44:05,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1838976293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:05,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:05,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:44:05,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856385646] [2022-11-03 03:44:05,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:05,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:44:05,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:05,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:44:05,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:44:05,507 INFO L87 Difference]: Start difference. First operand 199 states and 266 transitions. Second operand has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:05,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:05,690 INFO L93 Difference]: Finished difference Result 502 states and 712 transitions. [2022-11-03 03:44:05,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:44:05,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:05,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:05,692 INFO L225 Difference]: With dead ends: 502 [2022-11-03 03:44:05,692 INFO L226 Difference]: Without dead ends: 383 [2022-11-03 03:44:05,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-03 03:44:05,694 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 488 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 917 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:05,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 917 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:44:05,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-11-03 03:44:05,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 201. [2022-11-03 03:44:05,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201 states, 200 states have (on average 1.34) internal successors, (268), 200 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 03:44:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 268 transitions. [2022-11-03 03:44:05,701 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 268 transitions. Word has length 122 [2022-11-03 03:44:05,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:05,701 INFO L495 AbstractCegarLoop]: Abstraction has 201 states and 268 transitions. [2022-11-03 03:44:05,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.4) internal successors, (122), 5 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 268 transitions. [2022-11-03 03:44:05,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:05,702 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:05,702 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] [2022-11-03 03:44:05,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-11-03 03:44:05,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:05,903 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:05,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:05,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1048710693, now seen corresponding path program 1 times [2022-11-03 03:44:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:05,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711343038] [2022-11-03 03:44:05,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:05,904 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:05,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:05,905 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:05,906 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 03:44:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:06,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:06,561 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 03:44:06,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:06,561 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:06,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711343038] [2022-11-03 03:44:06,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711343038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:06,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:06,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:06,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023038730] [2022-11-03 03:44:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:06,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:06,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:06,563 INFO L87 Difference]: Start difference. First operand 201 states and 268 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:06,698 INFO L93 Difference]: Finished difference Result 475 states and 673 transitions. [2022-11-03 03:44:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:06,698 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:06,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:06,699 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:06,700 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:06,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:06,701 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 289 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:06,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 640 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:44:06,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:06,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 203. [2022-11-03 03:44:06,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 202 states have (on average 1.3366336633663367) internal successors, (270), 202 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 03:44:06,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 270 transitions. [2022-11-03 03:44:06,708 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 270 transitions. Word has length 122 [2022-11-03 03:44:06,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:06,708 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 270 transitions. [2022-11-03 03:44:06,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:06,709 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 270 transitions. [2022-11-03 03:44:06,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:06,709 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:06,709 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] [2022-11-03 03:44:06,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:06,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:06,933 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:06,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:06,933 INFO L85 PathProgramCache]: Analyzing trace with hash -796656473, now seen corresponding path program 1 times [2022-11-03 03:44:06,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:06,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728009507] [2022-11-03 03:44:06,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:06,934 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:06,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:06,935 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:06,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 03:44:07,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:07,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:07,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:07,563 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 03:44:07,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:07,563 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:07,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728009507] [2022-11-03 03:44:07,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728009507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:07,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:07,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:07,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050471711] [2022-11-03 03:44:07,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:07,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:07,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:07,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:07,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:07,565 INFO L87 Difference]: Start difference. First operand 203 states and 270 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:07,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:07,618 INFO L93 Difference]: Finished difference Result 475 states and 672 transitions. [2022-11-03 03:44:07,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:07,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:07,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:07,620 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:07,620 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:07,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:07,622 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 278 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:07,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 648 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:44:07,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:07,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 207. [2022-11-03 03:44:07,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3349514563106797) internal successors, (275), 206 states have internal predecessors, (275), 0 states have call successors, (0), 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 03:44:07,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 275 transitions. [2022-11-03 03:44:07,628 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 275 transitions. Word has length 122 [2022-11-03 03:44:07,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:07,629 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 275 transitions. [2022-11-03 03:44:07,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:07,629 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 275 transitions. [2022-11-03 03:44:07,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:07,630 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:07,630 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] [2022-11-03 03:44:07,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:07,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:07,843 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:07,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1640661975, now seen corresponding path program 1 times [2022-11-03 03:44:07,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:07,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [279600642] [2022-11-03 03:44:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:07,845 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:07,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:07,848 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:07,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 03:44:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:08,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:08,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:08,472 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 03:44:08,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:08,473 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:08,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [279600642] [2022-11-03 03:44:08,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [279600642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:08,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:08,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:08,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674622367] [2022-11-03 03:44:08,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:08,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:08,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:08,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:08,474 INFO L87 Difference]: Start difference. First operand 207 states and 275 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:08,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:08,518 INFO L93 Difference]: Finished difference Result 475 states and 671 transitions. [2022-11-03 03:44:08,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:08,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:08,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:08,521 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:08,521 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:08,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:08,522 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 272 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:08,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 647 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:44:08,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:08,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 209. [2022-11-03 03:44:08,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 208 states have (on average 1.3317307692307692) internal successors, (277), 208 states have internal predecessors, (277), 0 states have call successors, (0), 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 03:44:08,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 277 transitions. [2022-11-03 03:44:08,529 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 277 transitions. Word has length 122 [2022-11-03 03:44:08,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:08,529 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 277 transitions. [2022-11-03 03:44:08,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:08,530 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 277 transitions. [2022-11-03 03:44:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:08,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:08,531 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] [2022-11-03 03:44:08,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:08,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:08,747 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:08,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:08,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1713048533, now seen corresponding path program 1 times [2022-11-03 03:44:08,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:08,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [761273884] [2022-11-03 03:44:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:08,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:08,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:08,750 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:08,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 03:44:09,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:09,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:09,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:09,408 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 03:44:09,408 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:09,409 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:09,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [761273884] [2022-11-03 03:44:09,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [761273884] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:09,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:09,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:09,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073084862] [2022-11-03 03:44:09,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:09,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:09,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:09,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:09,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:09,411 INFO L87 Difference]: Start difference. First operand 209 states and 277 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:09,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:09,454 INFO L93 Difference]: Finished difference Result 475 states and 670 transitions. [2022-11-03 03:44:09,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:09,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:09,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:09,455 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:09,455 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:09,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:09,456 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 266 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:09,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 646 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:44:09,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:09,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 211. [2022-11-03 03:44:09,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.3285714285714285) internal successors, (279), 210 states have internal predecessors, (279), 0 states have call successors, (0), 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 03:44:09,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 279 transitions. [2022-11-03 03:44:09,462 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 279 transitions. Word has length 122 [2022-11-03 03:44:09,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:09,463 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 279 transitions. [2022-11-03 03:44:09,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:09,463 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 279 transitions. [2022-11-03 03:44:09,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:09,464 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:09,464 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] [2022-11-03 03:44:09,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:09,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:09,688 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:09,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:09,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1011448659, now seen corresponding path program 1 times [2022-11-03 03:44:09,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:09,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [696620530] [2022-11-03 03:44:09,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:09,689 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:09,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:09,690 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:09,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 03:44:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:10,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:10,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:10,323 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 03:44:10,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:10,323 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:10,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [696620530] [2022-11-03 03:44:10,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [696620530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:10,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:10,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:10,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398165741] [2022-11-03 03:44:10,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:10,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:10,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:10,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:10,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:10,326 INFO L87 Difference]: Start difference. First operand 211 states and 279 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:10,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:10,376 INFO L93 Difference]: Finished difference Result 475 states and 669 transitions. [2022-11-03 03:44:10,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:10,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:10,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:10,379 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:10,379 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:10,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:10,379 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 260 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:10,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 645 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:44:10,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:10,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 213. [2022-11-03 03:44:10,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.3254716981132075) internal successors, (281), 212 states have internal predecessors, (281), 0 states have call successors, (0), 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 03:44:10,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 281 transitions. [2022-11-03 03:44:10,386 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 281 transitions. Word has length 122 [2022-11-03 03:44:10,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:10,386 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 281 transitions. [2022-11-03 03:44:10,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:10,387 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 281 transitions. [2022-11-03 03:44:10,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:10,387 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:10,387 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] [2022-11-03 03:44:10,407 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-03 03:44:10,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:10,595 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:10,595 INFO L85 PathProgramCache]: Analyzing trace with hash 374754735, now seen corresponding path program 1 times [2022-11-03 03:44:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:10,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [688198966] [2022-11-03 03:44:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:10,596 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:10,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:10,597 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:10,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 03:44:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:11,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:11,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:11,242 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 03:44:11,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:11,242 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:11,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [688198966] [2022-11-03 03:44:11,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [688198966] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:11,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:11,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:11,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383200497] [2022-11-03 03:44:11,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:11,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:11,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:11,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:11,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:11,244 INFO L87 Difference]: Start difference. First operand 213 states and 281 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:11,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:11,291 INFO L93 Difference]: Finished difference Result 475 states and 668 transitions. [2022-11-03 03:44:11,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:11,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:11,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:11,293 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:11,293 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:11,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:11,294 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 254 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:11,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 644 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:44:11,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:11,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 215. [2022-11-03 03:44:11,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.3224299065420562) internal successors, (283), 214 states have internal predecessors, (283), 0 states have call successors, (0), 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 03:44:11,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 283 transitions. [2022-11-03 03:44:11,301 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 283 transitions. Word has length 122 [2022-11-03 03:44:11,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:11,301 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 283 transitions. [2022-11-03 03:44:11,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:11,302 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 283 transitions. [2022-11-03 03:44:11,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:11,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:11,303 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] [2022-11-03 03:44:11,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:11,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:11,527 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:11,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:11,527 INFO L85 PathProgramCache]: Analyzing trace with hash -1996984527, now seen corresponding path program 1 times [2022-11-03 03:44:11,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:11,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84584019] [2022-11-03 03:44:11,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:11,529 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:11,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:11,529 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:11,531 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 03:44:12,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:12,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:12,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:12,184 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 03:44:12,184 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:12,184 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:12,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84584019] [2022-11-03 03:44:12,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84584019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:12,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:12,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:12,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709695623] [2022-11-03 03:44:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:12,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:12,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:12,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:12,189 INFO L87 Difference]: Start difference. First operand 215 states and 283 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:12,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:12,233 INFO L93 Difference]: Finished difference Result 475 states and 667 transitions. [2022-11-03 03:44:12,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:12,233 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:12,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:12,235 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:12,235 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:12,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:12,236 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 248 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:12,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 643 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:44:12,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:12,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 217. [2022-11-03 03:44:12,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 216 states have internal predecessors, (285), 0 states have call successors, (0), 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 03:44:12,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 285 transitions. [2022-11-03 03:44:12,242 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 285 transitions. Word has length 122 [2022-11-03 03:44:12,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:12,242 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 285 transitions. [2022-11-03 03:44:12,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:12,242 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 285 transitions. [2022-11-03 03:44:12,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:12,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:12,243 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] [2022-11-03 03:44:12,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:12,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:12,466 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:12,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1856435917, now seen corresponding path program 1 times [2022-11-03 03:44:12,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:12,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896859468] [2022-11-03 03:44:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:12,468 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:12,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:12,469 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:12,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 03:44:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:12,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:12,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:13,115 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 03:44:13,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:13,116 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:13,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896859468] [2022-11-03 03:44:13,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896859468] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:13,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:13,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:13,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290589326] [2022-11-03 03:44:13,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:13,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:13,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:13,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:13,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:13,121 INFO L87 Difference]: Start difference. First operand 217 states and 285 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:13,256 INFO L93 Difference]: Finished difference Result 475 states and 666 transitions. [2022-11-03 03:44:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:13,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:13,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:13,258 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:13,258 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:13,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:13,259 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 237 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:13,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 639 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:44:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:13,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 221. [2022-11-03 03:44:13,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 1.3181818181818181) internal successors, (290), 220 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:44:13,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 290 transitions. [2022-11-03 03:44:13,265 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 290 transitions. Word has length 122 [2022-11-03 03:44:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:13,265 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 290 transitions. [2022-11-03 03:44:13,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:13,266 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 290 transitions. [2022-11-03 03:44:13,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:13,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:13,266 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] [2022-11-03 03:44:13,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:13,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:13,489 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:13,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:13,490 INFO L85 PathProgramCache]: Analyzing trace with hash -1433734091, now seen corresponding path program 1 times [2022-11-03 03:44:13,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:13,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1486791653] [2022-11-03 03:44:13,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:13,491 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:13,491 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:13,492 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:13,495 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 03:44:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:13,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:13,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:14,142 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 03:44:14,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:14,142 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:14,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1486791653] [2022-11-03 03:44:14,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1486791653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:14,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:14,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:14,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448507343] [2022-11-03 03:44:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:14,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:14,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:14,144 INFO L87 Difference]: Start difference. First operand 221 states and 290 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:14,189 INFO L93 Difference]: Finished difference Result 475 states and 665 transitions. [2022-11-03 03:44:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:14,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:14,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:14,191 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:14,191 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:14,191 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:14,192 INFO L413 NwaCegarLoop]: 286 mSDtfsCounter, 226 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:14,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 641 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:44:14,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:14,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 225. [2022-11-03 03:44:14,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.3169642857142858) internal successors, (295), 224 states have internal predecessors, (295), 0 states have call successors, (0), 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 03:44:14,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 295 transitions. [2022-11-03 03:44:14,198 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 295 transitions. Word has length 122 [2022-11-03 03:44:14,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:14,199 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 295 transitions. [2022-11-03 03:44:14,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:14,199 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 295 transitions. [2022-11-03 03:44:14,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:14,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:14,200 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] [2022-11-03 03:44:14,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-03 03:44:14,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:14,415 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:14,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:14,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1272885303, now seen corresponding path program 1 times [2022-11-03 03:44:14,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:14,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [966869201] [2022-11-03 03:44:14,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:14,417 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:14,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:14,418 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:14,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 03:44:14,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:14,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:14,965 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:15,138 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 03:44:15,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:15,139 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:15,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [966869201] [2022-11-03 03:44:15,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [966869201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:15,139 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:15,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:15,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009661060] [2022-11-03 03:44:15,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:15,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:15,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:15,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:15,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:15,140 INFO L87 Difference]: Start difference. First operand 225 states and 295 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:15,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:15,258 INFO L93 Difference]: Finished difference Result 475 states and 664 transitions. [2022-11-03 03:44:15,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:15,258 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:15,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:15,259 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:15,259 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:15,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:15,260 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 220 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:15,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 649 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:44:15,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:15,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 227. [2022-11-03 03:44:15,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3141592920353982) internal successors, (297), 226 states have internal predecessors, (297), 0 states have call successors, (0), 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 03:44:15,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 297 transitions. [2022-11-03 03:44:15,265 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 297 transitions. Word has length 122 [2022-11-03 03:44:15,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:15,266 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 297 transitions. [2022-11-03 03:44:15,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:15,266 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 297 transitions. [2022-11-03 03:44:15,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:15,267 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:15,267 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] [2022-11-03 03:44:15,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-03 03:44:15,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:15,481 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:15,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:15,481 INFO L85 PathProgramCache]: Analyzing trace with hash -6978375, now seen corresponding path program 1 times [2022-11-03 03:44:15,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:15,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480734187] [2022-11-03 03:44:15,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:15,483 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:15,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:15,484 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:15,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 03:44:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:15,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:15,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:16,135 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 03:44:16,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:16,136 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:16,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480734187] [2022-11-03 03:44:16,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480734187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:16,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:16,136 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:16,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634073069] [2022-11-03 03:44:16,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:16,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:16,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:16,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:16,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:16,138 INFO L87 Difference]: Start difference. First operand 227 states and 297 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:16,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:16,184 INFO L93 Difference]: Finished difference Result 475 states and 663 transitions. [2022-11-03 03:44:16,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:16,185 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:16,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:16,187 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:16,187 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:16,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:16,187 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 209 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:16,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 639 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 03:44:16,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:16,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 231. [2022-11-03 03:44:16,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.3130434782608695) internal successors, (302), 230 states have internal predecessors, (302), 0 states have call successors, (0), 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 03:44:16,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 302 transitions. [2022-11-03 03:44:16,194 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 302 transitions. Word has length 122 [2022-11-03 03:44:16,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:16,194 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 302 transitions. [2022-11-03 03:44:16,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:16,194 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 302 transitions. [2022-11-03 03:44:16,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:16,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:16,195 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] [2022-11-03 03:44:16,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-11-03 03:44:16,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:16,408 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:16,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:16,409 INFO L85 PathProgramCache]: Analyzing trace with hash 694086203, now seen corresponding path program 1 times [2022-11-03 03:44:16,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:16,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458119805] [2022-11-03 03:44:16,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:16,410 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:16,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:16,411 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:16,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 03:44:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:16,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:44:16,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:17,078 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 03:44:17,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:44:17,079 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:44:17,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458119805] [2022-11-03 03:44:17,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458119805] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:44:17,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:44:17,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:44:17,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523573914] [2022-11-03 03:44:17,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:44:17,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:44:17,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:44:17,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:44:17,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:44:17,080 INFO L87 Difference]: Start difference. First operand 231 states and 302 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:44:17,197 INFO L93 Difference]: Finished difference Result 475 states and 662 transitions. [2022-11-03 03:44:17,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:44:17,198 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 122 [2022-11-03 03:44:17,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:44:17,200 INFO L225 Difference]: With dead ends: 475 [2022-11-03 03:44:17,200 INFO L226 Difference]: Without dead ends: 356 [2022-11-03 03:44:17,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 119 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 03:44:17,201 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 203 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:44:17,201 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 647 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:44:17,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2022-11-03 03:44:17,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 233. [2022-11-03 03:44:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.3103448275862069) internal successors, (304), 232 states have internal predecessors, (304), 0 states have call successors, (0), 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 03:44:17,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 304 transitions. [2022-11-03 03:44:17,206 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 304 transitions. Word has length 122 [2022-11-03 03:44:17,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:44:17,206 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 304 transitions. [2022-11-03 03:44:17,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 0 states have call successors, (0), 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 03:44:17,207 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 304 transitions. [2022-11-03 03:44:17,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-03 03:44:17,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:44:17,208 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] [2022-11-03 03:44:17,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-03 03:44:17,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:44:17,431 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:44:17,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:44:17,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1374144573, now seen corresponding path program 1 times [2022-11-03 03:44:17,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:44:17,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1398933778] [2022-11-03 03:44:17,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:44:17,433 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:44:17,433 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:44:17,434 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:44:17,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_df0f0b3a-befa-42c7-860e-2d6e8df5ecb3/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 03:44:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:44:17,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 1257 conjuncts, 372 conjunts are in the unsatisfiable core [2022-11-03 03:44:17,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:44:39,871 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 03:44:39,872 INFO L328 TraceCheckSpWp]: Computing backward predicates...