./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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 f0d9930c6b61c981c9ae16145fb1383f480baebf8f73a8cff221b2b7162b19fa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:49:14,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:49:14,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:49:15,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:49:15,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:49:15,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:49:15,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:49:15,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:49:15,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:49:15,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:49:15,031 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:49:15,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:49:15,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:49:15,042 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:49:15,044 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:49:15,047 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:49:15,049 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:49:15,051 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:49:15,053 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:49:15,063 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:49:15,066 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:49:15,068 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:49:15,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:49:15,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:49:15,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:49:15,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:49:15,087 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:49:15,089 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:49:15,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:49:15,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:49:15,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:49:15,093 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:49:15,095 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:49:15,097 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:49:15,100 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:49:15,101 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:49:15,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:49:15,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:49:15,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:49:15,104 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:49:15,105 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:49:15,106 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:49:15,159 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:49:15,159 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:49:15,160 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:49:15,161 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:49:15,162 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:49:15,162 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:49:15,163 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:49:15,163 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:49:15,163 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:49:15,163 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:49:15,165 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:49:15,166 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:49:15,166 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:49:15,166 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:49:15,167 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:49:15,167 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:49:15,167 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:49:15,168 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:49:15,169 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:49:15,169 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:49:15,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:49:15,170 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:49:15,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:49:15,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:49:15,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:49:15,171 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:49:15,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:49:15,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:49:15,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:49:15,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:49:15,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:49:15,173 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:49:15,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:49:15,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:49:15,174 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:49:15,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:49:15,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:49:15,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:49:15,175 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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0d9930c6b61c981c9ae16145fb1383f480baebf8f73a8cff221b2b7162b19fa [2022-11-03 02:49:15,527 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:49:15,577 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:49:15,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:49:15,582 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:49:15,583 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:49:15,585 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c [2022-11-03 02:49:15,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data/a98a767e3/d560d8461fe945c290ee1e6fd949cacd/FLAG5b090fa92 [2022-11-03 02:49:16,486 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:49:16,487 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c [2022-11-03 02:49:16,511 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data/a98a767e3/d560d8461fe945c290ee1e6fd949cacd/FLAG5b090fa92 [2022-11-03 02:49:16,615 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data/a98a767e3/d560d8461fe945c290ee1e6fd949cacd [2022-11-03 02:49:16,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:49:16,623 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:49:16,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:49:16,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:49:16,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:49:16,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:49:16" (1/1) ... [2022-11-03 02:49:16,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170c1537 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:16, skipping insertion in model container [2022-11-03 02:49:16,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:49:16" (1/1) ... [2022-11-03 02:49:16,645 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:49:16,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:49:17,068 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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c[1107,1120] [2022-11-03 02:49:17,579 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:49:17,583 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:49:17,599 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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c[1107,1120] [2022-11-03 02:49:17,931 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:49:17,949 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:49:17,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17 WrapperNode [2022-11-03 02:49:17,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:49:17,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:49:17,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:49:17,952 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:49:17,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,284 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1855 [2022-11-03 02:49:18,285 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:49:18,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:49:18,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:49:18,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:49:18,299 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,519 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,552 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,569 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,616 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:49:18,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:49:18,619 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:49:18,619 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:49:18,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (1/1) ... [2022-11-03 02:49:18,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:49:18,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:49:18,664 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:49:18,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:49:18,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:49:18,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:49:19,347 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:49:19,349 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:49:26,645 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:49:34,586 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:49:34,587 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:49:34,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:34 BoogieIcfgContainer [2022-11-03 02:49:34,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:49:34,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:49:34,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:49:34,602 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:49:34,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:49:16" (1/3) ... [2022-11-03 02:49:34,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcab785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:49:34, skipping insertion in model container [2022-11-03 02:49:34,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:49:17" (2/3) ... [2022-11-03 02:49:34,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcab785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:49:34, skipping insertion in model container [2022-11-03 02:49:34,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:34" (3/3) ... [2022-11-03 02:49:34,607 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal6.c [2022-11-03 02:49:34,635 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:49:34,636 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:49:34,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:49:34,734 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;@212cc6d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:49:34,734 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:49:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:49:34,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-03 02:49:34,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:49:34,750 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-03 02:49:34,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:49:34,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:49:34,762 INFO L85 PathProgramCache]: Analyzing trace with hash 23458255, now seen corresponding path program 1 times [2022-11-03 02:49:34,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:49:34,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683545468] [2022-11-03 02:49:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:49:34,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:50:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:50:22,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 02:51:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 02:51:00,224 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 02:51:00,226 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 02:51:00,227 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 02:51:00,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:51:00,234 INFO L444 BasicCegarLoop]: Path program histogram: [1] [2022-11-03 02:51:00,239 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 02:51:00,301 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 02:51:00,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 02:51:00 BoogieIcfgContainer [2022-11-03 02:51:00,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 02:51:00,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 02:51:00,351 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 02:51:00,352 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 02:51:00,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:49:34" (3/4) ... [2022-11-03 02:51:00,357 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 02:51:00,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 02:51:00,359 INFO L158 Benchmark]: Toolchain (without parser) took 103735.58ms. Allocated memory was 94.4MB in the beginning and 3.2GB in the end (delta: 3.1GB). Free memory was 70.5MB in the beginning and 2.0GB in the end (delta: -1.9GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2022-11-03 02:51:00,360 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 77.6MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 02:51:00,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1324.20ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 51.3MB in the end (delta: 19.2MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. [2022-11-03 02:51:00,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 333.76ms. Allocated memory is still 94.4MB. Free memory was 51.3MB in the beginning and 40.2MB in the end (delta: 11.1MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. [2022-11-03 02:51:00,369 INFO L158 Benchmark]: Boogie Preprocessor took 331.28ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 39.9MB in the beginning and 105.3MB in the end (delta: -65.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2022-11-03 02:51:00,369 INFO L158 Benchmark]: RCFGBuilder took 15972.25ms. Allocated memory was 163.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 105.3MB in the beginning and 927.7MB in the end (delta: -822.4MB). Peak memory consumption was 465.1MB. Max. memory is 16.1GB. [2022-11-03 02:51:00,371 INFO L158 Benchmark]: TraceAbstraction took 85755.40ms. Allocated memory was 1.3GB in the beginning and 3.2GB in the end (delta: 1.9GB). Free memory was 926.7MB in the beginning and 2.0GB in the end (delta: -1.0GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. [2022-11-03 02:51:00,372 INFO L158 Benchmark]: Witness Printer took 7.49ms. Allocated memory is still 3.2GB. Free memory was 2.0GB in the beginning and 2.0GB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:51:00,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 77.6MB. Free memory was 55.8MB in the beginning and 55.7MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1324.20ms. Allocated memory is still 94.4MB. Free memory was 70.5MB in the beginning and 51.3MB in the end (delta: 19.2MB). Peak memory consumption was 29.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 333.76ms. Allocated memory is still 94.4MB. Free memory was 51.3MB in the beginning and 40.2MB in the end (delta: 11.1MB). Peak memory consumption was 24.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 331.28ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 39.9MB in the beginning and 105.3MB in the end (delta: -65.4MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * RCFGBuilder took 15972.25ms. Allocated memory was 163.6MB in the beginning and 1.3GB in the end (delta: 1.1GB). Free memory was 105.3MB in the beginning and 927.7MB in the end (delta: -822.4MB). Peak memory consumption was 465.1MB. Max. memory is 16.1GB. * TraceAbstraction took 85755.40ms. Allocated memory was 1.3GB in the beginning and 3.2GB in the end (delta: 1.9GB). Free memory was 926.7MB in the beginning and 2.0GB in the end (delta: -1.0GB). Peak memory consumption was 1.7GB. Max. memory is 16.1GB. * Witness Printer took 7.49ms. Allocated memory is still 3.2GB. Free memory was 2.0GB in the beginning and 2.0GB 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 bitwiseOr at line 192, overapproximation of bitwiseAnd at line 158, overapproximation of bitwiseComplement at line 189, overapproximation of bitwiseXOr at line 195. 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_6 mask_SORT_6 = (SORT_6)-1 >> (sizeof(SORT_6) * 8 - 2); [L29] const SORT_6 msb_SORT_6 = (SORT_6)1 << (2 - 1); [L31] const SORT_8 mask_SORT_8 = (SORT_8)-1 >> (sizeof(SORT_8) * 8 - 3); [L32] const SORT_8 msb_SORT_8 = (SORT_8)1 << (3 - 1); [L34] const SORT_14 mask_SORT_14 = (SORT_14)-1 >> (sizeof(SORT_14) * 8 - 5); [L35] const SORT_14 msb_SORT_14 = (SORT_14)1 << (5 - 1); [L37] const SORT_17 mask_SORT_17 = (SORT_17)-1 >> (sizeof(SORT_17) * 8 - 8); [L38] const SORT_17 msb_SORT_17 = (SORT_17)1 << (8 - 1); [L40] const SORT_86 mask_SORT_86 = (SORT_86)-1 >> (sizeof(SORT_86) * 8 - 4); [L41] const SORT_86 msb_SORT_86 = (SORT_86)1 << (4 - 1); [L43] const SORT_169 mask_SORT_169 = (SORT_169)-1 >> (sizeof(SORT_169) * 8 - 6); [L44] const SORT_169 msb_SORT_169 = (SORT_169)1 << (6 - 1); [L46] const SORT_171 mask_SORT_171 = (SORT_171)-1 >> (sizeof(SORT_171) * 8 - 7); [L47] const SORT_171 msb_SORT_171 = (SORT_171)1 << (7 - 1); [L49] const SORT_174 mask_SORT_174 = (SORT_174)-1 >> (sizeof(SORT_174) * 8 - 9); [L50] const SORT_174 msb_SORT_174 = (SORT_174)1 << (9 - 1); [L52] const SORT_176 mask_SORT_176 = (SORT_176)-1 >> (sizeof(SORT_176) * 8 - 10); [L53] const SORT_176 msb_SORT_176 = (SORT_176)1 << (10 - 1); [L55] const SORT_178 mask_SORT_178 = (SORT_178)-1 >> (sizeof(SORT_178) * 8 - 11); [L56] const SORT_178 msb_SORT_178 = (SORT_178)1 << (11 - 1); [L58] const SORT_180 mask_SORT_180 = (SORT_180)-1 >> (sizeof(SORT_180) * 8 - 12); [L59] const SORT_180 msb_SORT_180 = (SORT_180)1 << (12 - 1); [L61] const SORT_1 var_27 = 0; [L62] const SORT_6 var_36 = 0; [L63] const SORT_6 var_44 = 3; [L64] const SORT_6 var_46 = 2; [L65] const SORT_6 var_48 = 1; [L66] const SORT_1 var_52 = 1; [L67] const SORT_8 var_53 = 1; [L68] const SORT_8 var_56 = 3; [L69] const SORT_8 var_59 = 2; [L70] const SORT_8 var_63 = 5; [L71] const SORT_8 var_66 = 7; [L72] const SORT_8 var_69 = 6; [L73] const SORT_8 var_73 = 4; [L74] const SORT_17 var_99 = 0; [L75] const SORT_14 var_120 = 11; [L76] const SORT_14 var_122 = 10; [L77] const SORT_14 var_124 = 2; [L78] const SORT_14 var_126 = 9; [L79] const SORT_14 var_141 = 21; [L80] const SORT_14 var_143 = 20; [L81] const SORT_14 var_145 = 19; [L82] const SORT_14 var_147 = 18; [L83] const SORT_14 var_149 = 17; [L84] const SORT_14 var_151 = 16; [L85] const SORT_14 var_153 = 15; [L86] const SORT_14 var_155 = 14; [L87] const SORT_14 var_157 = 8; [L88] const SORT_14 var_159 = 6; [L89] const SORT_14 var_161 = 3; [L90] const SORT_14 var_163 = 5; [L91] const SORT_14 var_183 = 4; [L92] const SORT_14 var_185 = 1; [L93] const SORT_14 var_195 = 7; [L94] const SORT_14 var_213 = 13; [L95] const SORT_14 var_221 = 12; [L96] const SORT_14 var_242 = 23; [L97] const SORT_14 var_245 = 22; [L98] const SORT_14 var_254 = 25; [L99] const SORT_14 var_257 = 27; [L100] const SORT_14 var_260 = 26; [L101] const SORT_14 var_264 = 29; [L102] const SORT_14 var_267 = 31; [L103] const SORT_14 var_270 = 30; [L104] const SORT_14 var_274 = 28; [L105] const SORT_14 var_280 = 24; [L106] const SORT_169 var_303 = 0; [L107] const SORT_17 var_311 = 2; [L108] const SORT_17 var_314 = 1; [L109] const SORT_17 var_412 = 3; [L111] SORT_1 input_2; [L112] SORT_1 input_3; [L113] SORT_1 input_4; [L114] SORT_1 input_5; [L115] SORT_6 input_7; [L116] SORT_8 input_9; [L117] SORT_6 input_10; [L118] SORT_1 input_11; [L119] SORT_1 input_12; [L120] SORT_1 input_13; [L121] SORT_14 input_15; [L122] SORT_6 input_16; [L123] SORT_17 input_18; [L124] SORT_6 input_19; [L125] SORT_1 input_20; [L126] SORT_1 input_21; [L127] SORT_6 input_22; [L128] SORT_17 input_23; [L129] SORT_17 input_24; [L130] SORT_1 input_25; [L131] SORT_6 input_26; [L133] SORT_1 state_28 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L134] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L135] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L136] SORT_6 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L137] SORT_17 state_100 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L138] SORT_17 state_320 = __VERIFIER_nondet_uchar() & mask_SORT_17; [L139] SORT_6 state_360 = __VERIFIER_nondet_uchar() & mask_SORT_6; [L141] SORT_1 init_29_arg_1 = var_27; [L142] state_28 = init_29_arg_1 [L143] SORT_1 init_32_arg_1 = var_27; [L144] state_31 = init_32_arg_1 [L145] SORT_1 init_34_arg_1 = var_27; [L146] state_33 = init_34_arg_1 [L147] SORT_6 init_38_arg_1 = var_36; [L148] state_37 = init_38_arg_1 [L149] SORT_17 init_101_arg_1 = var_99; [L150] state_100 = init_101_arg_1 [L151] SORT_17 init_321_arg_1 = var_99; [L152] state_320 = init_321_arg_1 [L153] SORT_6 init_361_arg_1 = var_36; [L154] state_360 = init_361_arg_1 VAL [init_101_arg_1=0, init_29_arg_1=0, init_321_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_361_arg_1=0, init_38_arg_1=0, mask_SORT_1=1, mask_SORT_14=31, mask_SORT_169=63, mask_SORT_17=255, mask_SORT_171=127, mask_SORT_174=511, mask_SORT_176=1023, mask_SORT_178=2047, mask_SORT_180=4095, mask_SORT_6=3, mask_SORT_8=7, mask_SORT_86=15, msb_SORT_1=1, msb_SORT_14=16, msb_SORT_169=32, msb_SORT_17=128, msb_SORT_171=64, msb_SORT_174=256, msb_SORT_176=512, msb_SORT_178=1024, msb_SORT_180=2048, msb_SORT_6=2, msb_SORT_8=4, msb_SORT_86=8, state_100=0, state_28=0, state_31=0, state_320=0, state_33=0, state_360=0, state_37=0, var_120=11, var_122=10, var_124=2, var_126=9, var_141=21, var_143=20, var_145=19, var_147=18, var_149=17, var_151=16, var_153=15, var_155=14, var_157=8, var_159=6, var_161=3, var_163=5, var_183=4, var_185=1, var_195=7, var_213=13, var_221=12, var_242=23, var_245=22, var_254=25, var_257=27, var_260=26, var_264=29, var_267=31, var_27=0, var_270=30, var_274=28, var_280=24, var_303=0, var_311=2, var_314=1, var_36=0, var_412=3, var_44=3, var_46=2, var_48=1, var_52=1, var_53=1, var_56=3, var_59=2, var_63=5, var_66=7, var_69=6, var_73=4, var_99=0] [L157] input_2 = __VERIFIER_nondet_uchar() [L158] input_2 = input_2 & mask_SORT_1 [L159] input_3 = __VERIFIER_nondet_uchar() [L160] input_3 = input_3 & mask_SORT_1 [L161] input_4 = __VERIFIER_nondet_uchar() [L162] input_5 = __VERIFIER_nondet_uchar() [L163] input_5 = input_5 & mask_SORT_1 [L164] input_7 = __VERIFIER_nondet_uchar() [L165] input_7 = input_7 & mask_SORT_6 [L166] input_9 = __VERIFIER_nondet_uchar() [L167] input_9 = input_9 & mask_SORT_8 [L168] input_10 = __VERIFIER_nondet_uchar() [L169] input_10 = input_10 & mask_SORT_6 [L170] input_11 = __VERIFIER_nondet_uchar() [L171] input_11 = input_11 & mask_SORT_1 [L172] input_12 = __VERIFIER_nondet_uchar() [L173] input_13 = __VERIFIER_nondet_uchar() [L174] input_15 = __VERIFIER_nondet_uchar() [L175] input_15 = input_15 & mask_SORT_14 [L176] input_16 = __VERIFIER_nondet_uchar() [L177] input_18 = __VERIFIER_nondet_uchar() [L178] input_19 = __VERIFIER_nondet_uchar() [L179] input_20 = __VERIFIER_nondet_uchar() [L180] input_21 = __VERIFIER_nondet_uchar() [L181] input_22 = __VERIFIER_nondet_uchar() [L182] input_23 = __VERIFIER_nondet_uchar() [L183] input_24 = __VERIFIER_nondet_uchar() [L184] input_25 = __VERIFIER_nondet_uchar() [L185] input_26 = __VERIFIER_nondet_uchar() [L188] SORT_1 var_30_arg_0 = state_28; [L189] SORT_1 var_30 = ~var_30_arg_0; [L190] SORT_1 var_90_arg_0 = input_12; [L191] SORT_1 var_90_arg_1 = input_11; [L192] SORT_6 var_90 = ((SORT_6)var_90_arg_0 << 1) | var_90_arg_1; [L193] var_90 = var_90 & mask_SORT_6 [L194] SORT_6 var_91_arg_0 = var_90; [L195] var_91_arg_0 ^= var_91_arg_0 >> 4 [L196] var_91_arg_0 ^= var_91_arg_0 >> 2 [L197] var_91_arg_0 ^= var_91_arg_0 >> 1 [L198] SORT_1 var_91 = var_91_arg_0; [L199] SORT_8 var_83_arg_0 = input_9; [L200] SORT_8 var_83_arg_1 = var_59; [L201] SORT_1 var_83 = var_83_arg_0 == var_83_arg_1; [L202] SORT_8 var_82_arg_0 = input_9; [L203] SORT_8 var_82_arg_1 = var_53; [L204] SORT_1 var_82 = var_82_arg_0 == var_82_arg_1; [L205] SORT_8 var_81_arg_0 = input_9; [L206] SORT_8 var_81_arg_1 = var_73; [L207] SORT_1 var_81 = var_81_arg_0 == var_81_arg_1; [L208] SORT_8 var_80_arg_0 = input_9; [L209] SORT_8 var_80_arg_1 = var_63; [L210] SORT_1 var_80 = var_80_arg_0 == var_80_arg_1; [L211] SORT_1 var_84_arg_0 = var_81; [L212] SORT_1 var_84_arg_1 = var_80; [L213] SORT_6 var_84 = ((SORT_6)var_84_arg_0 << 1) | var_84_arg_1; [L214] var_84 = var_84 & mask_SORT_6 [L215] SORT_1 var_85_arg_0 = var_82; [L216] SORT_6 var_85_arg_1 = var_84; [L217] SORT_8 var_85 = ((SORT_8)var_85_arg_0 << 2) | var_85_arg_1; [L218] var_85 = var_85 & mask_SORT_8 [L219] SORT_1 var_87_arg_0 = var_83; [L220] SORT_8 var_87_arg_1 = var_85; [L221] SORT_86 var_87 = ((SORT_86)var_87_arg_0 << 3) | var_87_arg_1; [L222] var_87 = var_87 & mask_SORT_86 [L223] SORT_86 var_88_arg_0 = var_87; [L224] SORT_1 var_88 = var_88_arg_0 != 0; [L225] SORT_6 var_49_arg_0 = input_10; [L226] SORT_6 var_49_arg_1 = var_48; [L227] SORT_1 var_49 = var_49_arg_0 == var_49_arg_1; [L228] SORT_8 var_70_arg_0 = input_9; [L229] SORT_8 var_70_arg_1 = var_69; [L230] SORT_1 var_70 = var_70_arg_0 == var_70_arg_1; [L231] SORT_8 var_67_arg_0 = input_9; [L232] SORT_8 var_67_arg_1 = var_66; [L233] SORT_1 var_67 = var_67_arg_0 == var_67_arg_1; [L234] SORT_1 var_71_arg_0 = var_70; [L235] SORT_1 var_71_arg_1 = var_67; [L236] SORT_1 var_71 = var_71_arg_0 | var_71_arg_1; [L237] var_71 = var_71 & mask_SORT_1 [L238] SORT_8 var_64_arg_0 = input_9; [L239] SORT_8 var_64_arg_1 = var_63; [L240] SORT_1 var_64 = var_64_arg_0 == var_64_arg_1; [L241] SORT_8 var_74_arg_0 = input_9; [L242] SORT_8 var_74_arg_1 = var_73; [L243] SORT_1 var_74 = var_74_arg_0 == var_74_arg_1; [L244] SORT_1 var_75_arg_0 = var_64; [L245] SORT_1 var_75_arg_1 = var_74; [L246] SORT_6 var_75 = ((SORT_6)var_75_arg_0 << 1) | var_75_arg_1; [L247] var_75 = var_75 & mask_SORT_6 [L248] SORT_1 var_76_arg_0 = var_71; [L249] SORT_6 var_76_arg_1 = var_75; [L250] SORT_8 var_76 = ((SORT_8)var_76_arg_0 << 2) | var_76_arg_1; [L251] var_76 = var_76 & mask_SORT_8 [L252] SORT_8 var_77_arg_0 = var_76; [L253] SORT_1 var_77 = var_77_arg_0 != 0; [L254] SORT_1 var_68_arg_0 = var_67; [L255] SORT_1 var_68_arg_1 = var_52; [L256] SORT_1 var_68_arg_2 = var_52; [L257] EXPR var_68_arg_0 ? var_68_arg_1 : var_68_arg_2 [L257] SORT_1 var_68 = var_68_arg_0 ? var_68_arg_1 : var_68_arg_2; [L258] SORT_1 var_65_arg_0 = var_64; [L259] SORT_1 var_65_arg_1 = var_27; [L260] SORT_1 var_65_arg_2 = var_27; [L261] EXPR var_65_arg_0 ? var_65_arg_1 : var_65_arg_2 [L261] SORT_1 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L262] SORT_1 var_72_arg_0 = var_71; [L263] SORT_1 var_72_arg_1 = var_68; [L264] SORT_1 var_72_arg_2 = var_65; [L265] EXPR var_72_arg_0 ? var_72_arg_1 : var_72_arg_2 [L265] SORT_1 var_72 = var_72_arg_0 ? var_72_arg_1 : var_72_arg_2; [L266] SORT_8 var_60_arg_0 = input_9; [L267] SORT_8 var_60_arg_1 = var_59; [L268] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L269] SORT_8 var_57_arg_0 = input_9; [L270] SORT_8 var_57_arg_1 = var_56; [L271] SORT_1 var_57 = var_57_arg_0 == var_57_arg_1; [L272] SORT_1 var_61_arg_0 = var_60; [L273] SORT_1 var_61_arg_1 = var_57; [L274] SORT_1 var_61 = var_61_arg_0 | var_61_arg_1; [L275] var_61 = var_61 & mask_SORT_1 [L276] SORT_1 var_58_arg_0 = var_57; [L277] SORT_1 var_58_arg_1 = var_52; [L278] SORT_1 var_58_arg_2 = var_27; [L279] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L279] SORT_1 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L280] SORT_8 var_54_arg_0 = input_9; [L281] SORT_8 var_54_arg_1 = var_53; [L282] SORT_1 var_54 = var_54_arg_0 == var_54_arg_1; [L283] SORT_1 var_55_arg_0 = var_54; [L284] SORT_1 var_55_arg_1 = var_27; [L285] SORT_1 var_55_arg_2 = var_52; [L286] EXPR var_55_arg_0 ? var_55_arg_1 : var_55_arg_2 [L286] SORT_1 var_55 = var_55_arg_0 ? var_55_arg_1 : var_55_arg_2; [L287] SORT_1 var_62_arg_0 = var_61; [L288] SORT_1 var_62_arg_1 = var_58; [L289] SORT_1 var_62_arg_2 = var_55; [L290] EXPR var_62_arg_0 ? var_62_arg_1 : var_62_arg_2 [L290] SORT_1 var_62 = var_62_arg_0 ? var_62_arg_1 : var_62_arg_2; [L291] SORT_1 var_78_arg_0 = var_77; [L292] SORT_1 var_78_arg_1 = var_72; [L293] SORT_1 var_78_arg_2 = var_62; [L294] EXPR var_78_arg_0 ? var_78_arg_1 : var_78_arg_2 [L294] SORT_1 var_78 = var_78_arg_0 ? var_78_arg_1 : var_78_arg_2; [L295] var_78 = var_78 & mask_SORT_1 [L296] SORT_6 var_47_arg_0 = input_10; [L297] SORT_6 var_47_arg_1 = var_46; [L298] SORT_1 var_47 = var_47_arg_0 == var_47_arg_1; [L299] SORT_1 var_50_arg_0 = var_49; [L300] SORT_1 var_50_arg_1 = var_47; [L301] SORT_6 var_50 = ((SORT_6)var_50_arg_0 << 1) | var_50_arg_1; [L302] var_50 = var_50 & mask_SORT_6 [L303] SORT_6 var_51_arg_0 = var_50; [L304] SORT_1 var_51 = var_51_arg_0 != 0; [L305] SORT_1 var_79_arg_0 = var_78; [L306] SORT_1 var_79_arg_1 = var_51; [L307] SORT_1 var_79_arg_2 = var_27; [L308] EXPR var_79_arg_0 ? var_79_arg_1 : var_79_arg_2 [L308] SORT_1 var_79 = var_79_arg_0 ? var_79_arg_1 : var_79_arg_2; [L309] SORT_1 var_89_arg_0 = var_88; [L310] SORT_1 var_89_arg_1 = var_49; [L311] SORT_1 var_89_arg_2 = var_79; [L312] EXPR var_89_arg_0 ? var_89_arg_1 : var_89_arg_2 [L312] SORT_1 var_89 = var_89_arg_0 ? var_89_arg_1 : var_89_arg_2; [L313] SORT_6 var_45_arg_0 = input_7; [L314] SORT_6 var_45_arg_1 = var_44; [L315] SORT_1 var_45 = var_45_arg_0 == var_45_arg_1; [L316] SORT_1 var_92_arg_0 = var_89; [L317] SORT_1 var_92_arg_1 = var_45; [L318] SORT_6 var_92 = ((SORT_6)var_92_arg_0 << 1) | var_92_arg_1; [L319] var_92 = var_92 & mask_SORT_6 [L320] SORT_1 var_93_arg_0 = var_91; [L321] SORT_6 var_93_arg_1 = var_92; [L322] SORT_8 var_93 = ((SORT_8)var_93_arg_0 << 2) | var_93_arg_1; [L323] var_93 = var_93 & mask_SORT_8 [L324] SORT_8 var_94_arg_0 = var_93; [L325] SORT_1 var_94 = var_94_arg_0 != 0; [L326] SORT_1 var_95_arg_0 = input_13; [L327] SORT_1 var_95_arg_1 = var_94; [L328] SORT_6 var_95 = ((SORT_6)var_95_arg_0 << 1) | var_95_arg_1; [L329] var_95 = var_95 & mask_SORT_6 [L330] SORT_6 var_96_arg_0 = var_95; [L331] SORT_1 var_96 = var_96_arg_0 == mask_SORT_6; [L332] SORT_14 var_271_arg_0 = input_15; [L333] SORT_14 var_271_arg_1 = var_270; [L334] SORT_1 var_271 = var_271_arg_0 == var_271_arg_1; [L335] SORT_14 var_268_arg_0 = input_15; [L336] SORT_14 var_268_arg_1 = var_267; [L337] SORT_1 var_268 = var_268_arg_0 == var_268_arg_1; [L338] SORT_1 var_272_arg_0 = var_271; [L339] SORT_1 var_272_arg_1 = var_268; [L340] SORT_1 var_272 = var_272_arg_0 | var_272_arg_1; [L341] var_272 = var_272 & mask_SORT_1 [L342] SORT_14 var_265_arg_0 = input_15; [L343] SORT_14 var_265_arg_1 = var_264; [L344] SORT_1 var_265 = var_265_arg_0 == var_265_arg_1; [L345] SORT_14 var_275_arg_0 = input_15; [L346] SORT_14 var_275_arg_1 = var_274; [L347] SORT_1 var_275 = var_275_arg_0 == var_275_arg_1; [L348] SORT_1 var_276_arg_0 = var_265; [L349] SORT_1 var_276_arg_1 = var_275; [L350] SORT_6 var_276 = ((SORT_6)var_276_arg_0 << 1) | var_276_arg_1; [L351] var_276 = var_276 & mask_SORT_6 [L352] SORT_1 var_277_arg_0 = var_272; [L353] SORT_6 var_277_arg_1 = var_276; [L354] SORT_8 var_277 = ((SORT_8)var_277_arg_0 << 2) | var_277_arg_1; [L355] var_277 = var_277 & mask_SORT_8 [L356] SORT_8 var_278_arg_0 = var_277; [L357] SORT_1 var_278 = var_278_arg_0 != 0; [L358] SORT_14 var_261_arg_0 = input_15; [L359] SORT_14 var_261_arg_1 = var_260; [L360] SORT_1 var_261 = var_261_arg_0 == var_261_arg_1; [L361] SORT_14 var_258_arg_0 = input_15; [L362] SORT_14 var_258_arg_1 = var_257; [L363] SORT_1 var_258 = var_258_arg_0 == var_258_arg_1; [L364] SORT_1 var_262_arg_0 = var_261; [L365] SORT_1 var_262_arg_1 = var_258; [L366] SORT_1 var_262 = var_262_arg_0 | var_262_arg_1; [L367] var_262 = var_262 & mask_SORT_1 [L368] SORT_14 var_255_arg_0 = input_15; [L369] SORT_14 var_255_arg_1 = var_254; [L370] SORT_1 var_255 = var_255_arg_0 == var_255_arg_1; [L371] SORT_14 var_281_arg_0 = input_15; [L372] SORT_14 var_281_arg_1 = var_280; [L373] SORT_1 var_281 = var_281_arg_0 == var_281_arg_1; [L374] SORT_1 var_282_arg_0 = var_255; [L375] SORT_1 var_282_arg_1 = var_281; [L376] SORT_6 var_282 = ((SORT_6)var_282_arg_0 << 1) | var_282_arg_1; [L377] var_282 = var_282 & mask_SORT_6 [L378] SORT_1 var_283_arg_0 = var_262; [L379] SORT_6 var_283_arg_1 = var_282; [L380] SORT_8 var_283 = ((SORT_8)var_283_arg_0 << 2) | var_283_arg_1; [L381] var_283 = var_283 & mask_SORT_8 [L382] SORT_1 var_284_arg_0 = var_278; [L383] SORT_8 var_284_arg_1 = var_283; [L384] SORT_86 var_284 = ((SORT_86)var_284_arg_0 << 3) | var_284_arg_1; [L385] var_284 = var_284 & mask_SORT_86 [L386] SORT_86 var_285_arg_0 = var_284; [L387] SORT_1 var_285 = var_285_arg_0 != 0; [L388] SORT_14 var_246_arg_0 = input_15; [L389] SORT_14 var_246_arg_1 = var_245; [L390] SORT_1 var_246 = var_246_arg_0 == var_246_arg_1; [L391] SORT_14 var_243_arg_0 = input_15; [L392] SORT_14 var_243_arg_1 = var_242; [L393] SORT_1 var_243 = var_243_arg_0 == var_243_arg_1; [L394] SORT_1 var_247_arg_0 = var_246; [L395] SORT_1 var_247_arg_1 = var_243; [L396] SORT_1 var_247 = var_247_arg_0 | var_247_arg_1; [L397] var_247 = var_247 & mask_SORT_1 [L398] SORT_14 var_240_arg_0 = input_15; [L399] SORT_14 var_240_arg_1 = var_141; [L400] SORT_1 var_240 = var_240_arg_0 == var_240_arg_1; [L401] SORT_14 var_249_arg_0 = input_15; [L402] SORT_14 var_249_arg_1 = var_143; [L403] SORT_1 var_249 = var_249_arg_0 == var_249_arg_1; [L404] SORT_1 var_250_arg_0 = var_240; [L405] SORT_1 var_250_arg_1 = var_249; [L406] SORT_6 var_250 = ((SORT_6)var_250_arg_0 << 1) | var_250_arg_1; [L407] var_250 = var_250 & mask_SORT_6 [L408] SORT_1 var_251_arg_0 = var_247; [L409] SORT_6 var_251_arg_1 = var_250; [L410] SORT_8 var_251 = ((SORT_8)var_251_arg_0 << 2) | var_251_arg_1; [L411] var_251 = var_251 & mask_SORT_8 [L412] SORT_8 var_252_arg_0 = var_251; [L413] SORT_1 var_252 = var_252_arg_0 != 0; [L414] SORT_14 var_237_arg_0 = input_15; [L415] SORT_14 var_237_arg_1 = var_147; [L416] SORT_1 var_237 = var_237_arg_0 == var_237_arg_1; [L417] SORT_14 var_235_arg_0 = input_15; [L418] SORT_14 var_235_arg_1 = var_145; [L419] SORT_1 var_235 = var_235_arg_0 == var_235_arg_1; [L420] SORT_1 var_238_arg_0 = var_237; [L421] SORT_1 var_238_arg_1 = var_235; [L422] SORT_1 var_238 = var_238_arg_0 | var_238_arg_1; [L423] var_238 = var_238 & mask_SORT_1 [L424] SORT_14 var_233_arg_0 = input_15; [L425] SORT_14 var_233_arg_1 = var_149; [L426] SORT_1 var_233 = var_233_arg_0 == var_233_arg_1; [L427] SORT_14 var_287_arg_0 = input_15; [L428] SORT_14 var_287_arg_1 = var_151; [L429] SORT_1 var_287 = var_287_arg_0 == var_287_arg_1; [L430] SORT_1 var_288_arg_0 = var_233; [L431] SORT_1 var_288_arg_1 = var_287; [L432] SORT_6 var_288 = ((SORT_6)var_288_arg_0 << 1) | var_288_arg_1; [L433] var_288 = var_288 & mask_SORT_6 [L434] SORT_1 var_289_arg_0 = var_238; [L435] SORT_6 var_289_arg_1 = var_288; [L436] SORT_8 var_289 = ((SORT_8)var_289_arg_0 << 2) | var_289_arg_1; [L437] var_289 = var_289 & mask_SORT_8 [L438] SORT_1 var_290_arg_0 = var_252; [L439] SORT_8 var_290_arg_1 = var_289; [L440] SORT_86 var_290 = ((SORT_86)var_290_arg_0 << 3) | var_290_arg_1; [L441] var_290 = var_290 & mask_SORT_86 [L442] SORT_1 var_291_arg_0 = var_285; [L443] SORT_86 var_291_arg_1 = var_290; [L444] SORT_14 var_291 = ((SORT_14)var_291_arg_0 << 4) | var_291_arg_1; [L445] var_291 = var_291 & mask_SORT_14 [L446] SORT_14 var_292_arg_0 = var_291; [L447] SORT_1 var_292 = var_292_arg_0 != 0; [L448] SORT_1 var_269_arg_0 = var_268; [L449] SORT_1 var_269_arg_1 = var_52; [L450] SORT_1 var_269_arg_2 = var_52; [L451] EXPR var_269_arg_0 ? var_269_arg_1 : var_269_arg_2 [L451] SORT_1 var_269 = var_269_arg_0 ? var_269_arg_1 : var_269_arg_2; [L452] SORT_1 var_266_arg_0 = var_265; [L453] SORT_1 var_266_arg_1 = var_52; [L454] SORT_1 var_266_arg_2 = var_52; [L455] EXPR var_266_arg_0 ? var_266_arg_1 : var_266_arg_2 [L455] SORT_1 var_266 = var_266_arg_0 ? var_266_arg_1 : var_266_arg_2; [L456] SORT_1 var_273_arg_0 = var_272; [L457] SORT_1 var_273_arg_1 = var_269; [L458] SORT_1 var_273_arg_2 = var_266; [L459] EXPR var_273_arg_0 ? var_273_arg_1 : var_273_arg_2 [L459] SORT_1 var_273 = var_273_arg_0 ? var_273_arg_1 : var_273_arg_2; [L460] SORT_1 var_259_arg_0 = var_258; [L461] SORT_1 var_259_arg_1 = var_52; [L462] SORT_1 var_259_arg_2 = var_52; [L463] EXPR var_259_arg_0 ? var_259_arg_1 : var_259_arg_2 [L463] SORT_1 var_259 = var_259_arg_0 ? var_259_arg_1 : var_259_arg_2; [L464] SORT_1 var_256_arg_0 = var_255; [L465] SORT_1 var_256_arg_1 = var_52; [L466] SORT_1 var_256_arg_2 = var_52; [L467] EXPR var_256_arg_0 ? var_256_arg_1 : var_256_arg_2 [L467] SORT_1 var_256 = var_256_arg_0 ? var_256_arg_1 : var_256_arg_2; [L468] SORT_1 var_263_arg_0 = var_262; [L469] SORT_1 var_263_arg_1 = var_259; [L470] SORT_1 var_263_arg_2 = var_256; [L471] EXPR var_263_arg_0 ? var_263_arg_1 : var_263_arg_2 [L471] SORT_1 var_263 = var_263_arg_0 ? var_263_arg_1 : var_263_arg_2; [L472] SORT_1 var_279_arg_0 = var_278; [L473] SORT_1 var_279_arg_1 = var_273; [L474] SORT_1 var_279_arg_2 = var_263; [L475] EXPR var_279_arg_0 ? var_279_arg_1 : var_279_arg_2 [L475] SORT_1 var_279 = var_279_arg_0 ? var_279_arg_1 : var_279_arg_2; [L476] SORT_1 var_244_arg_0 = var_243; [L477] SORT_1 var_244_arg_1 = var_52; [L478] SORT_1 var_244_arg_2 = var_52; [L479] EXPR var_244_arg_0 ? var_244_arg_1 : var_244_arg_2 [L479] SORT_1 var_244 = var_244_arg_0 ? var_244_arg_1 : var_244_arg_2; [L480] SORT_1 var_241_arg_0 = var_240; [L481] SORT_1 var_241_arg_1 = var_27; [L482] SORT_1 var_241_arg_2 = var_27; [L483] EXPR var_241_arg_0 ? var_241_arg_1 : var_241_arg_2 [L483] SORT_1 var_241 = var_241_arg_0 ? var_241_arg_1 : var_241_arg_2; [L484] SORT_1 var_248_arg_0 = var_247; [L485] SORT_1 var_248_arg_1 = var_244; [L486] SORT_1 var_248_arg_2 = var_241; [L487] EXPR var_248_arg_0 ? var_248_arg_1 : var_248_arg_2 [L487] SORT_1 var_248 = var_248_arg_0 ? var_248_arg_1 : var_248_arg_2; [L488] SORT_1 var_236_arg_0 = var_235; [L489] SORT_1 var_236_arg_1 = var_27; [L490] SORT_1 var_236_arg_2 = var_27; [L491] EXPR var_236_arg_0 ? var_236_arg_1 : var_236_arg_2 [L491] SORT_1 var_236 = var_236_arg_0 ? var_236_arg_1 : var_236_arg_2; [L492] SORT_1 var_234_arg_0 = var_233; [L493] SORT_1 var_234_arg_1 = var_27; [L494] SORT_1 var_234_arg_2 = var_27; [L495] EXPR var_234_arg_0 ? var_234_arg_1 : var_234_arg_2 [L495] SORT_1 var_234 = var_234_arg_0 ? var_234_arg_1 : var_234_arg_2; [L496] SORT_1 var_239_arg_0 = var_238; [L497] SORT_1 var_239_arg_1 = var_236; [L498] SORT_1 var_239_arg_2 = var_234; [L499] EXPR var_239_arg_0 ? var_239_arg_1 : var_239_arg_2 [L499] SORT_1 var_239 = var_239_arg_0 ? var_239_arg_1 : var_239_arg_2; [L500] SORT_1 var_253_arg_0 = var_252; [L501] SORT_1 var_253_arg_1 = var_248; [L502] SORT_1 var_253_arg_2 = var_239; [L503] EXPR var_253_arg_0 ? var_253_arg_1 : var_253_arg_2 [L503] SORT_1 var_253 = var_253_arg_0 ? var_253_arg_1 : var_253_arg_2; [L504] SORT_1 var_286_arg_0 = var_285; [L505] SORT_1 var_286_arg_1 = var_279; [L506] SORT_1 var_286_arg_2 = var_253; [L507] EXPR var_286_arg_0 ? var_286_arg_1 : var_286_arg_2 [L507] SORT_1 var_286 = var_286_arg_0 ? var_286_arg_1 : var_286_arg_2; [L508] SORT_14 var_218_arg_0 = input_15; [L509] SORT_14 var_218_arg_1 = var_155; [L510] SORT_1 var_218 = var_218_arg_0 == var_218_arg_1; [L511] SORT_14 var_216_arg_0 = input_15; [L512] SORT_14 var_216_arg_1 = var_153; [L513] SORT_1 var_216 = var_216_arg_0 == var_216_arg_1; [L514] SORT_1 var_219_arg_0 = var_218; [L515] SORT_1 var_219_arg_1 = var_216; [L516] SORT_1 var_219 = var_219_arg_0 | var_219_arg_1; [L517] var_219 = var_219 & mask_SORT_1 [L518] SORT_14 var_214_arg_0 = input_15; [L519] SORT_14 var_214_arg_1 = var_213; [L520] SORT_1 var_214 = var_214_arg_0 == var_214_arg_1; [L521] SORT_14 var_222_arg_0 = input_15; [L522] SORT_14 var_222_arg_1 = var_221; [L523] SORT_1 var_222 = var_222_arg_0 == var_222_arg_1; [L524] SORT_1 var_223_arg_0 = var_214; [L525] SORT_1 var_223_arg_1 = var_222; [L526] SORT_6 var_223 = ((SORT_6)var_223_arg_0 << 1) | var_223_arg_1; [L527] var_223 = var_223 & mask_SORT_6 [L528] SORT_1 var_224_arg_0 = var_219; [L529] SORT_6 var_224_arg_1 = var_223; [L530] SORT_8 var_224 = ((SORT_8)var_224_arg_0 << 2) | var_224_arg_1; [L531] var_224 = var_224 & mask_SORT_8 [L532] SORT_8 var_225_arg_0 = var_224; [L533] SORT_1 var_225 = var_225_arg_0 != 0; [L534] SORT_14 var_210_arg_0 = input_15; [L535] SORT_14 var_210_arg_1 = var_122; [L536] SORT_1 var_210 = var_210_arg_0 == var_210_arg_1; [L537] SORT_14 var_208_arg_0 = input_15; [L538] SORT_14 var_208_arg_1 = var_120; [L539] SORT_1 var_208 = var_208_arg_0 == var_208_arg_1; [L540] SORT_1 var_211_arg_0 = var_210; [L541] SORT_1 var_211_arg_1 = var_208; [L542] SORT_1 var_211 = var_211_arg_0 | var_211_arg_1; [L543] var_211 = var_211 & mask_SORT_1 [L544] SORT_14 var_206_arg_0 = input_15; [L545] SORT_14 var_206_arg_1 = var_126; [L546] SORT_1 var_206 = var_206_arg_0 == var_206_arg_1; [L547] SORT_14 var_227_arg_0 = input_15; [L548] SORT_14 var_227_arg_1 = var_157; [L549] SORT_1 var_227 = var_227_arg_0 == var_227_arg_1; [L550] SORT_1 var_228_arg_0 = var_206; [L551] SORT_1 var_228_arg_1 = var_227; [L552] SORT_6 var_228 = ((SORT_6)var_228_arg_0 << 1) | var_228_arg_1; [L553] var_228 = var_228 & mask_SORT_6 [L554] SORT_1 var_229_arg_0 = var_211; [L555] SORT_6 var_229_arg_1 = var_228; [L556] SORT_8 var_229 = ((SORT_8)var_229_arg_0 << 2) | var_229_arg_1; [L557] var_229 = var_229 & mask_SORT_8 [L558] SORT_1 var_230_arg_0 = var_225; [L559] SORT_8 var_230_arg_1 = var_229; [L560] SORT_86 var_230 = ((SORT_86)var_230_arg_0 << 3) | var_230_arg_1; [L561] var_230 = var_230 & mask_SORT_86 [L562] SORT_86 var_231_arg_0 = var_230; [L563] SORT_1 var_231 = var_231_arg_0 != 0; [L564] SORT_1 var_217_arg_0 = var_216; [L565] SORT_1 var_217_arg_1 = var_27; [L566] SORT_1 var_217_arg_2 = var_27; [L567] EXPR var_217_arg_0 ? var_217_arg_1 : var_217_arg_2 [L567] SORT_1 var_217 = var_217_arg_0 ? var_217_arg_1 : var_217_arg_2; [L568] SORT_1 var_215_arg_0 = var_214; [L569] SORT_1 var_215_arg_1 = var_52; [L570] SORT_1 var_215_arg_2 = var_52; [L571] EXPR var_215_arg_0 ? var_215_arg_1 : var_215_arg_2 [L571] SORT_1 var_215 = var_215_arg_0 ? var_215_arg_1 : var_215_arg_2; [L572] SORT_1 var_220_arg_0 = var_219; [L573] SORT_1 var_220_arg_1 = var_217; [L574] SORT_1 var_220_arg_2 = var_215; [L575] EXPR var_220_arg_0 ? var_220_arg_1 : var_220_arg_2 [L575] SORT_1 var_220 = var_220_arg_0 ? var_220_arg_1 : var_220_arg_2; [L576] SORT_1 var_209_arg_0 = var_208; [L577] SORT_1 var_209_arg_1 = var_27; [L578] SORT_1 var_209_arg_2 = var_27; [L579] EXPR var_209_arg_0 ? var_209_arg_1 : var_209_arg_2 [L579] SORT_1 var_209 = var_209_arg_0 ? var_209_arg_1 : var_209_arg_2; [L580] SORT_1 var_207_arg_0 = var_206; [L581] SORT_1 var_207_arg_1 = var_27; [L582] SORT_1 var_207_arg_2 = var_27; [L583] EXPR var_207_arg_0 ? var_207_arg_1 : var_207_arg_2 [L583] SORT_1 var_207 = var_207_arg_0 ? var_207_arg_1 : var_207_arg_2; [L584] SORT_1 var_212_arg_0 = var_211; [L585] SORT_1 var_212_arg_1 = var_209; [L586] SORT_1 var_212_arg_2 = var_207; [L587] EXPR var_212_arg_0 ? var_212_arg_1 : var_212_arg_2 [L587] SORT_1 var_212 = var_212_arg_0 ? var_212_arg_1 : var_212_arg_2; [L588] SORT_1 var_226_arg_0 = var_225; [L589] SORT_1 var_226_arg_1 = var_220; [L590] SORT_1 var_226_arg_2 = var_212; [L591] EXPR var_226_arg_0 ? var_226_arg_1 : var_226_arg_2 [L591] SORT_1 var_226 = var_226_arg_0 ? var_226_arg_1 : var_226_arg_2; [L592] SORT_14 var_198_arg_0 = input_15; [L593] SORT_14 var_198_arg_1 = var_159; [L594] SORT_1 var_198 = var_198_arg_0 == var_198_arg_1; [L595] SORT_14 var_196_arg_0 = input_15; [L596] SORT_14 var_196_arg_1 = var_195; [L597] SORT_1 var_196 = var_196_arg_0 == var_196_arg_1; [L598] SORT_1 var_199_arg_0 = var_198; [L599] SORT_1 var_199_arg_1 = var_196; [L600] SORT_1 var_199 = var_199_arg_0 | var_199_arg_1; [L601] var_199 = var_199 & mask_SORT_1 [L602] SORT_14 var_193_arg_0 = input_15; [L603] SORT_14 var_193_arg_1 = var_163; [L604] SORT_1 var_193 = var_193_arg_0 == var_193_arg_1; [L605] SORT_14 var_201_arg_0 = input_15; [L606] SORT_14 var_201_arg_1 = var_183; [L607] SORT_1 var_201 = var_201_arg_0 == var_201_arg_1; [L608] SORT_1 var_202_arg_0 = var_193; [L609] SORT_1 var_202_arg_1 = var_201; [L610] SORT_6 var_202 = ((SORT_6)var_202_arg_0 << 1) | var_202_arg_1; [L611] var_202 = var_202 & mask_SORT_6 [L612] SORT_1 var_203_arg_0 = var_199; [L613] SORT_6 var_203_arg_1 = var_202; [L614] SORT_8 var_203 = ((SORT_8)var_203_arg_0 << 2) | var_203_arg_1; [L615] var_203 = var_203 & mask_SORT_8 [L616] SORT_8 var_204_arg_0 = var_203; [L617] SORT_1 var_204 = var_204_arg_0 != 0; [L618] SORT_1 var_197_arg_0 = var_196; [L619] SORT_1 var_197_arg_1 = var_52; [L620] SORT_1 var_197_arg_2 = var_27; [L621] EXPR var_197_arg_0 ? var_197_arg_1 : var_197_arg_2 [L621] SORT_1 var_197 = var_197_arg_0 ? var_197_arg_1 : var_197_arg_2; [L622] SORT_1 var_194_arg_0 = var_193; [L623] SORT_1 var_194_arg_1 = var_27; [L624] SORT_1 var_194_arg_2 = var_27; [L625] EXPR var_194_arg_0 ? var_194_arg_1 : var_194_arg_2 [L625] SORT_1 var_194 = var_194_arg_0 ? var_194_arg_1 : var_194_arg_2; [L626] SORT_1 var_200_arg_0 = var_199; [L627] SORT_1 var_200_arg_1 = var_197; [L628] SORT_1 var_200_arg_2 = var_194; [L629] EXPR var_200_arg_0 ? var_200_arg_1 : var_200_arg_2 [L629] SORT_1 var_200 = var_200_arg_0 ? var_200_arg_1 : var_200_arg_2; [L630] SORT_14 var_190_arg_0 = input_15; [L631] SORT_14 var_190_arg_1 = var_124; [L632] SORT_1 var_190 = var_190_arg_0 == var_190_arg_1; [L633] SORT_14 var_188_arg_0 = input_15; [L634] SORT_14 var_188_arg_1 = var_161; [L635] SORT_1 var_188 = var_188_arg_0 == var_188_arg_1; [L636] SORT_1 var_191_arg_0 = var_190; [L637] SORT_1 var_191_arg_1 = var_188; [L638] SORT_1 var_191 = var_191_arg_0 | var_191_arg_1; [L639] var_191 = var_191 & mask_SORT_1 [L640] SORT_1 var_189_arg_0 = var_188; [L641] SORT_1 var_189_arg_1 = var_27; [L642] SORT_1 var_189_arg_2 = var_27; [L643] EXPR var_189_arg_0 ? var_189_arg_1 : var_189_arg_2 [L643] SORT_1 var_189 = var_189_arg_0 ? var_189_arg_1 : var_189_arg_2; [L644] SORT_14 var_186_arg_0 = input_15; [L645] SORT_14 var_186_arg_1 = var_185; [L646] SORT_1 var_186 = var_186_arg_0 == var_186_arg_1; [L647] SORT_1 var_187_arg_0 = var_186; [L648] SORT_1 var_187_arg_1 = var_52; [L649] SORT_1 var_187_arg_2 = var_52; [L650] EXPR var_187_arg_0 ? var_187_arg_1 : var_187_arg_2 [L650] SORT_1 var_187 = var_187_arg_0 ? var_187_arg_1 : var_187_arg_2; [L651] SORT_1 var_192_arg_0 = var_191; [L652] SORT_1 var_192_arg_1 = var_189; [L653] SORT_1 var_192_arg_2 = var_187; [L654] EXPR var_192_arg_0 ? var_192_arg_1 : var_192_arg_2 [L654] SORT_1 var_192 = var_192_arg_0 ? var_192_arg_1 : var_192_arg_2; [L655] SORT_1 var_205_arg_0 = var_204; [L656] SORT_1 var_205_arg_1 = var_200; [L657] SORT_1 var_205_arg_2 = var_192; [L658] EXPR var_205_arg_0 ? var_205_arg_1 : var_205_arg_2 [L658] SORT_1 var_205 = var_205_arg_0 ? var_205_arg_1 : var_205_arg_2; [L659] SORT_1 var_232_arg_0 = var_231; [L660] SORT_1 var_232_arg_1 = var_226; [L661] SORT_1 var_232_arg_2 = var_205; [L662] EXPR var_232_arg_0 ? var_232_arg_1 : var_232_arg_2 [L662] SORT_1 var_232 = var_232_arg_0 ? var_232_arg_1 : var_232_arg_2; [L663] SORT_1 var_293_arg_0 = var_292; [L664] SORT_1 var_293_arg_1 = var_286; [L665] SORT_1 var_293_arg_2 = var_232; [L666] EXPR var_293_arg_0 ? var_293_arg_1 : var_293_arg_2 [L666] SORT_1 var_293 = var_293_arg_0 ? var_293_arg_1 : var_293_arg_2; [L667] SORT_14 var_184_arg_0 = input_15; [L668] SORT_14 var_184_arg_1 = var_183; [L669] SORT_1 var_184 = var_184_arg_0 == var_184_arg_1; [L670] SORT_14 var_164_arg_0 = input_15; [L671] SORT_14 var_164_arg_1 = var_163; [L672] SORT_1 var_164 = var_164_arg_0 == var_164_arg_1; [L673] SORT_14 var_162_arg_0 = input_15; [L674] SORT_14 var_162_arg_1 = var_161; [L675] SORT_1 var_162 = var_162_arg_0 == var_162_arg_1; [L676] SORT_14 var_160_arg_0 = input_15; [L677] SORT_14 var_160_arg_1 = var_159; [L678] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L679] SORT_14 var_158_arg_0 = input_15; [L680] SORT_14 var_158_arg_1 = var_157; [L681] SORT_1 var_158 = var_158_arg_0 == var_158_arg_1; [L682] SORT_14 var_156_arg_0 = input_15; [L683] SORT_14 var_156_arg_1 = var_155; [L684] SORT_1 var_156 = var_156_arg_0 == var_156_arg_1; [L685] SORT_14 var_154_arg_0 = input_15; [L686] SORT_14 var_154_arg_1 = var_153; [L687] SORT_1 var_154 = var_154_arg_0 == var_154_arg_1; [L688] SORT_14 var_152_arg_0 = input_15; [L689] SORT_14 var_152_arg_1 = var_151; [L690] SORT_1 var_152 = var_152_arg_0 == var_152_arg_1; [L691] SORT_14 var_150_arg_0 = input_15; [L692] SORT_14 var_150_arg_1 = var_149; [L693] SORT_1 var_150 = var_150_arg_0 == var_150_arg_1; [L694] SORT_14 var_148_arg_0 = input_15; [L695] SORT_14 var_148_arg_1 = var_147; [L696] SORT_1 var_148 = var_148_arg_0 == var_148_arg_1; [L697] SORT_14 var_146_arg_0 = input_15; [L698] SORT_14 var_146_arg_1 = var_145; [L699] SORT_1 var_146 = var_146_arg_0 == var_146_arg_1; [L700] SORT_14 var_144_arg_0 = input_15; [L701] SORT_14 var_144_arg_1 = var_143; [L702] SORT_1 var_144 = var_144_arg_0 == var_144_arg_1; [L703] SORT_14 var_142_arg_0 = input_15; [L704] SORT_14 var_142_arg_1 = var_141; [L705] SORT_1 var_142 = var_142_arg_0 == var_142_arg_1; [L706] SORT_1 var_165_arg_0 = var_144; [L707] SORT_1 var_165_arg_1 = var_142; [L708] SORT_6 var_165 = ((SORT_6)var_165_arg_0 << 1) | var_165_arg_1; [L709] var_165 = var_165 & mask_SORT_6 [L710] SORT_1 var_166_arg_0 = var_146; [L711] SORT_6 var_166_arg_1 = var_165; [L712] SORT_8 var_166 = ((SORT_8)var_166_arg_0 << 2) | var_166_arg_1; [L713] var_166 = var_166 & mask_SORT_8 [L714] SORT_1 var_167_arg_0 = var_148; [L715] SORT_8 var_167_arg_1 = var_166; [L716] SORT_86 var_167 = ((SORT_86)var_167_arg_0 << 3) | var_167_arg_1; [L717] var_167 = var_167 & mask_SORT_86 [L718] SORT_1 var_168_arg_0 = var_150; [L719] SORT_86 var_168_arg_1 = var_167; [L720] SORT_14 var_168 = ((SORT_14)var_168_arg_0 << 4) | var_168_arg_1; [L721] var_168 = var_168 & mask_SORT_14 [L722] SORT_1 var_170_arg_0 = var_152; [L723] SORT_14 var_170_arg_1 = var_168; [L724] SORT_169 var_170 = ((SORT_169)var_170_arg_0 << 5) | var_170_arg_1; [L725] var_170 = var_170 & mask_SORT_169 [L726] SORT_1 var_172_arg_0 = var_154; [L727] SORT_169 var_172_arg_1 = var_170; [L728] SORT_171 var_172 = ((SORT_171)var_172_arg_0 << 6) | var_172_arg_1; [L729] var_172 = var_172 & mask_SORT_171 [L730] SORT_1 var_173_arg_0 = var_156; [L731] SORT_171 var_173_arg_1 = var_172; [L732] SORT_17 var_173 = ((SORT_17)var_173_arg_0 << 7) | var_173_arg_1; [L733] var_173 = var_173 & mask_SORT_17 [L734] SORT_1 var_175_arg_0 = var_158; [L735] SORT_17 var_175_arg_1 = var_173; [L736] SORT_174 var_175 = ((SORT_174)var_175_arg_0 << 8) | var_175_arg_1; [L737] var_175 = var_175 & mask_SORT_174 [L738] SORT_1 var_177_arg_0 = var_160; [L739] SORT_174 var_177_arg_1 = var_175; [L740] SORT_176 var_177 = ((SORT_176)var_177_arg_0 << 9) | var_177_arg_1; [L741] var_177 = var_177 & mask_SORT_176 [L742] SORT_1 var_179_arg_0 = var_162; [L743] SORT_176 var_179_arg_1 = var_177; [L744] SORT_178 var_179 = ((SORT_178)var_179_arg_0 << 10) | var_179_arg_1; [L745] var_179 = var_179 & mask_SORT_178 [L746] SORT_1 var_181_arg_0 = var_164; [L747] SORT_178 var_181_arg_1 = var_179; [L748] SORT_180 var_181 = ((SORT_180)var_181_arg_0 << 11) | var_181_arg_1; [L749] var_181 = var_181 & mask_SORT_180 [L750] SORT_180 var_182_arg_0 = var_181; [L751] SORT_1 var_182 = var_182_arg_0 != 0; [L752] SORT_1 var_294_arg_0 = var_184; [L753] SORT_1 var_294_arg_1 = var_182; [L754] SORT_6 var_294 = ((SORT_6)var_294_arg_0 << 1) | var_294_arg_1; [L755] var_294 = var_294 & mask_SORT_6 [L756] SORT_1 var_295_arg_0 = var_293; [L757] SORT_6 var_295_arg_1 = var_294; [L758] SORT_8 var_295 = ((SORT_8)var_295_arg_0 << 2) | var_295_arg_1; [L759] var_295 = var_295 & mask_SORT_8 [L760] SORT_8 var_296_arg_0 = var_295; [L761] SORT_1 var_296 = var_296_arg_0 != 0; [L762] SORT_1 var_111_arg_0 = var_45; [L763] SORT_1 var_111 = ~var_111_arg_0; [L764] var_111 = var_111 & mask_SORT_1 [L765] SORT_1 var_112_arg_0 = input_13; [L766] SORT_1 var_112_arg_1 = var_111; [L767] SORT_6 var_112 = ((SORT_6)var_112_arg_0 << 1) | var_112_arg_1; [L768] var_112 = var_112 & mask_SORT_6 [L769] SORT_6 var_113_arg_0 = var_112; [L770] SORT_1 var_113 = var_113_arg_0 == mask_SORT_6; [L771] SORT_1 var_297_arg_0 = var_296; [L772] SORT_1 var_297_arg_1 = var_113; [L773] SORT_6 var_297 = ((SORT_6)var_297_arg_0 << 1) | var_297_arg_1; [L774] var_297 = var_297 & mask_SORT_6 [L775] SORT_1 var_298_arg_0 = var_91; [L776] SORT_6 var_298_arg_1 = var_297; [L777] SORT_8 var_298 = ((SORT_8)var_298_arg_0 << 2) | var_298_arg_1; [L778] var_298 = var_298 & mask_SORT_8 [L779] SORT_8 var_299_arg_0 = var_298; [L780] SORT_1 var_299 = var_299_arg_0 == mask_SORT_8; [L781] SORT_1 var_138_arg_0 = input_13; [L782] SORT_1 var_138 = ~var_138_arg_0; [L783] SORT_1 var_136_arg_0 = input_13; [L784] SORT_1 var_136_arg_1 = var_45; [L785] SORT_6 var_136 = ((SORT_6)var_136_arg_0 << 1) | var_136_arg_1; [L786] var_136 = var_136 & mask_SORT_6 [L787] SORT_6 var_137_arg_0 = var_136; [L788] SORT_1 var_137 = var_137_arg_0 == mask_SORT_6; [L789] SORT_1 var_139_arg_0 = var_138; [L790] SORT_1 var_139_arg_1 = var_137; [L791] SORT_6 var_139 = ((SORT_6)var_139_arg_0 << 1) | var_139_arg_1; [L792] var_139 = var_139 & mask_SORT_6 [L793] SORT_6 var_140_arg_0 = var_139; [L794] SORT_1 var_140 = var_140_arg_0 != 0; [L795] SORT_1 var_300_arg_0 = var_299; [L796] SORT_1 var_300_arg_1 = var_140; [L797] SORT_6 var_300 = ((SORT_6)var_300_arg_0 << 1) | var_300_arg_1; [L798] var_300 = var_300 & mask_SORT_6 [L799] SORT_6 var_301_arg_0 = var_300; [L800] SORT_1 var_301 = var_301_arg_0 != 0; [L801] SORT_14 var_127_arg_0 = input_15; [L802] SORT_14 var_127_arg_1 = var_126; [L803] SORT_1 var_127 = var_127_arg_0 == var_127_arg_1; [L804] SORT_14 var_125_arg_0 = input_15; [L805] SORT_14 var_125_arg_1 = var_124; [L806] SORT_1 var_125 = var_125_arg_0 == var_125_arg_1; [L807] SORT_14 var_123_arg_0 = input_15; [L808] SORT_14 var_123_arg_1 = var_122; [L809] SORT_1 var_123 = var_123_arg_0 == var_123_arg_1; [L810] SORT_14 var_121_arg_0 = input_15; [L811] SORT_14 var_121_arg_1 = var_120; [L812] SORT_1 var_121 = var_121_arg_0 == var_121_arg_1; [L813] SORT_1 var_128_arg_0 = var_123; [L814] SORT_1 var_128_arg_1 = var_121; [L815] SORT_6 var_128 = ((SORT_6)var_128_arg_0 << 1) | var_128_arg_1; [L816] var_128 = var_128 & mask_SORT_6 [L817] SORT_1 var_129_arg_0 = var_125; [L818] SORT_6 var_129_arg_1 = var_128; [L819] SORT_8 var_129 = ((SORT_8)var_129_arg_0 << 2) | var_129_arg_1; [L820] var_129 = var_129 & mask_SORT_8 [L821] SORT_1 var_130_arg_0 = var_127; [L822] SORT_8 var_130_arg_1 = var_129; [L823] SORT_86 var_130 = ((SORT_86)var_130_arg_0 << 3) | var_130_arg_1; [L824] var_130 = var_130 & mask_SORT_86 [L825] SORT_86 var_131_arg_0 = var_130; [L826] SORT_1 var_131 = var_131_arg_0 != 0; [L827] SORT_1 var_132_arg_0 = var_131; [L828] SORT_1 var_132_arg_1 = var_113; [L829] SORT_6 var_132 = ((SORT_6)var_132_arg_0 << 1) | var_132_arg_1; [L830] var_132 = var_132 & mask_SORT_6 [L831] SORT_1 var_133_arg_0 = var_91; [L832] SORT_6 var_133_arg_1 = var_132; [L833] SORT_8 var_133 = ((SORT_8)var_133_arg_0 << 2) | var_133_arg_1; [L834] var_133 = var_133 & mask_SORT_8 [L835] SORT_8 var_134_arg_0 = var_133; [L836] SORT_1 var_134 = var_134_arg_0 == mask_SORT_8; [L837] SORT_1 var_105_arg_0 = var_49; [L838] SORT_1 var_105 = ~var_105_arg_0; [L839] SORT_1 var_117_arg_0 = var_105; [L840] SORT_1 var_117_arg_1 = var_47; [L841] SORT_6 var_117 = ((SORT_6)var_117_arg_0 << 1) | var_117_arg_1; [L842] var_117 = var_117 & mask_SORT_6 [L843] SORT_6 var_118_arg_0 = var_117; [L844] SORT_1 var_118 = var_118_arg_0 == mask_SORT_6; [L845] SORT_1 var_119_arg_0 = var_118; [L846] SORT_1 var_119_arg_1 = var_49; [L847] SORT_6 var_119 = ((SORT_6)var_119_arg_0 << 1) | var_119_arg_1; [L848] SORT_1 var_110_arg_0 = var_91; [L849] SORT_1 var_110 = ~var_110_arg_0; [L850] var_110 = var_110 & mask_SORT_1 [L851] SORT_1 var_114_arg_0 = var_113; [L852] SORT_1 var_114_arg_1 = var_110; [L853] SORT_6 var_114 = ((SORT_6)var_114_arg_0 << 1) | var_114_arg_1; [L854] var_114 = var_114 & mask_SORT_6 [L855] SORT_6 var_115_arg_0 = var_114; [L856] SORT_1 var_115 = var_115_arg_0 == mask_SORT_6; [L857] SORT_1 var_106_arg_0 = var_47; [L858] SORT_1 var_106_arg_1 = var_78; [L859] SORT_6 var_106 = ((SORT_6)var_106_arg_0 << 1) | var_106_arg_1; [L860] var_106 = var_106 & mask_SORT_6 [L861] SORT_1 var_107_arg_0 = var_105; [L862] SORT_6 var_107_arg_1 = var_106; [L863] SORT_8 var_107 = ((SORT_8)var_107_arg_0 << 2) | var_107_arg_1; [L864] var_107 = var_107 & mask_SORT_8 [L865] SORT_8 var_108_arg_0 = var_107; [L866] SORT_1 var_108 = var_108_arg_0 == mask_SORT_8; [L867] SORT_1 var_109_arg_0 = var_108; [L868] SORT_1 var_109_arg_1 = var_27; [L869] SORT_6 var_109 = ((SORT_6)var_109_arg_0 << 1) | var_109_arg_1; [L870] SORT_1 var_116_arg_0 = var_115; [L871] SORT_6 var_116_arg_1 = var_109; [L872] SORT_6 var_116_arg_2 = var_36; [L873] EXPR var_116_arg_0 ? var_116_arg_1 : var_116_arg_2 [L873] SORT_6 var_116 = var_116_arg_0 ? var_116_arg_1 : var_116_arg_2; [L874] SORT_1 var_135_arg_0 = var_134; [L875] SORT_6 var_135_arg_1 = var_119; [L876] SORT_6 var_135_arg_2 = var_116; [L877] EXPR var_135_arg_0 ? var_135_arg_1 : var_135_arg_2 [L877] SORT_6 var_135 = var_135_arg_0 ? var_135_arg_1 : var_135_arg_2; [L878] SORT_1 var_302_arg_0 = var_301; [L879] SORT_6 var_302_arg_1 = var_36; [L880] SORT_6 var_302_arg_2 = var_135; [L881] EXPR var_302_arg_0 ? var_302_arg_1 : var_302_arg_2 [L881] SORT_6 var_302 = var_302_arg_0 ? var_302_arg_1 : var_302_arg_2; [L882] var_302 = var_302 & mask_SORT_6 [L883] SORT_169 var_304_arg_0 = var_303; [L884] SORT_6 var_304_arg_1 = var_302; [L885] SORT_17 var_304 = ((SORT_17)var_304_arg_0 << 2) | var_304_arg_1; [L886] SORT_1 var_39_arg_0 = state_33; [L887] SORT_6 var_39_arg_1 = state_37; [L888] SORT_6 var_39_arg_2 = input_19; [L889] EXPR var_39_arg_0 ? var_39_arg_1 : var_39_arg_2 [L889] SORT_6 var_39 = var_39_arg_0 ? var_39_arg_1 : var_39_arg_2; [L890] SORT_6 var_42_arg_0 = var_39; [L891] SORT_1 var_42 = var_42_arg_0 >> 0; [L892] var_42 = var_42 & mask_SORT_1 [L893] SORT_6 var_40_arg_0 = var_39; [L894] SORT_1 var_40 = var_40_arg_0 >> 1; [L895] var_40 = var_40 & mask_SORT_1 [L896] SORT_1 var_102_arg_0 = state_33; [L897] SORT_17 var_102_arg_1 = state_100; [L898] SORT_17 var_102_arg_2 = input_18; [L899] EXPR var_102_arg_0 ? var_102_arg_1 : var_102_arg_2 [L899] SORT_17 var_102 = var_102_arg_0 ? var_102_arg_1 : var_102_arg_2; [L900] SORT_1 var_103_arg_0 = var_40; [L901] SORT_17 var_103_arg_1 = var_102; [L902] SORT_17 var_103_arg_2 = var_99; [L903] EXPR var_103_arg_0 ? var_103_arg_1 : var_103_arg_2 [L903] SORT_17 var_103 = var_103_arg_0 ? var_103_arg_1 : var_103_arg_2; [L904] SORT_1 var_104_arg_0 = var_42; [L905] SORT_17 var_104_arg_1 = var_99; [L906] SORT_17 var_104_arg_2 = var_103; [L907] EXPR var_104_arg_0 ? var_104_arg_1 : var_104_arg_2 [L907] SORT_17 var_104 = var_104_arg_0 ? var_104_arg_1 : var_104_arg_2; [L908] SORT_1 var_305_arg_0 = var_96; [L909] SORT_17 var_305_arg_1 = var_304; [L910] SORT_17 var_305_arg_2 = var_104; [L911] EXPR var_305_arg_0 ? var_305_arg_1 : var_305_arg_2 [L911] SORT_17 var_305 = var_305_arg_0 ? var_305_arg_1 : var_305_arg_2; [L912] var_305 = var_305 & mask_SORT_17 [L913] SORT_17 var_315_arg_0 = var_305; [L914] SORT_17 var_315_arg_1 = var_314; [L915] SORT_1 var_315 = var_315_arg_0 == var_315_arg_1; [L916] SORT_1 var_316_arg_0 = var_315; [L917] SORT_1 var_316 = ~var_316_arg_0; [L918] SORT_17 var_312_arg_0 = var_305; [L919] SORT_17 var_312_arg_1 = var_311; [L920] SORT_1 var_312 = var_312_arg_0 == var_312_arg_1; [L921] SORT_1 var_313_arg_0 = var_312; [L922] SORT_1 var_313 = ~var_313_arg_0; [L923] SORT_17 var_306_arg_0 = var_305; [L924] SORT_17 var_306_arg_1 = var_99; [L925] SORT_1 var_306 = var_306_arg_0 == var_306_arg_1; [L926] SORT_1 var_307_arg_0 = var_306; [L927] SORT_1 var_307 = ~var_307_arg_0; [L928] SORT_1 var_35_arg_0 = state_33; [L929] SORT_1 var_35_arg_1 = state_31; [L930] SORT_1 var_35_arg_2 = input_20; [L931] EXPR var_35_arg_0 ? var_35_arg_1 : var_35_arg_2 [L931] SORT_1 var_35 = var_35_arg_0 ? var_35_arg_1 : var_35_arg_2; [L932] SORT_1 var_41_arg_0 = var_40; [L933] SORT_1 var_41_arg_1 = var_35; [L934] SORT_1 var_41_arg_2 = var_27; [L935] EXPR var_41_arg_0 ? var_41_arg_1 : var_41_arg_2 [L935] SORT_1 var_41 = var_41_arg_0 ? var_41_arg_1 : var_41_arg_2; [L936] SORT_1 var_43_arg_0 = var_42; [L937] SORT_1 var_43_arg_1 = var_27; [L938] SORT_1 var_43_arg_2 = var_41; [L939] EXPR var_43_arg_0 ? var_43_arg_1 : var_43_arg_2 [L939] SORT_1 var_43 = var_43_arg_0 ? var_43_arg_1 : var_43_arg_2; [L940] var_43 = var_43 & mask_SORT_1 [L941] SORT_1 var_97_arg_0 = var_96; [L942] SORT_1 var_97_arg_1 = var_43; [L943] SORT_6 var_97 = ((SORT_6)var_97_arg_0 << 1) | var_97_arg_1; [L944] var_97 = var_97 & mask_SORT_6 [L945] SORT_6 var_98_arg_0 = var_97; [L946] SORT_1 var_98 = var_98_arg_0 != 0; [L947] SORT_1 var_308_arg_0 = var_307; [L948] SORT_1 var_308_arg_1 = var_98; [L949] SORT_6 var_308 = ((SORT_6)var_308_arg_0 << 1) | var_308_arg_1; [L950] var_308 = var_308 & mask_SORT_6 [L951] SORT_1 var_309_arg_0 = var_45; [L952] SORT_6 var_309_arg_1 = var_308; [L953] SORT_8 var_309 = ((SORT_8)var_309_arg_0 << 2) | var_309_arg_1; [L954] var_309 = var_309 & mask_SORT_8 [L955] SORT_8 var_310_arg_0 = var_309; [L956] SORT_1 var_310 = var_310_arg_0 == mask_SORT_8; [L957] SORT_1 var_317_arg_0 = var_313; [L958] SORT_1 var_317_arg_1 = var_310; [L959] SORT_6 var_317 = ((SORT_6)var_317_arg_0 << 1) | var_317_arg_1; [L960] var_317 = var_317 & mask_SORT_6 [L961] SORT_1 var_318_arg_0 = var_316; [L962] SORT_6 var_318_arg_1 = var_317; [L963] SORT_8 var_318 = ((SORT_8)var_318_arg_0 << 2) | var_318_arg_1; [L964] var_318 = var_318 & mask_SORT_8 [L965] SORT_8 var_319_arg_0 = var_318; [L966] SORT_1 var_319 = var_319_arg_0 == mask_SORT_8; [L967] SORT_1 var_322_arg_0 = state_33; [L968] SORT_17 var_322_arg_1 = state_320; [L969] SORT_17 var_322_arg_2 = input_18; [L970] EXPR var_322_arg_0 ? var_322_arg_1 : var_322_arg_2 [L970] SORT_17 var_322 = var_322_arg_0 ? var_322_arg_1 : var_322_arg_2; [L971] SORT_1 var_323_arg_0 = var_40; [L972] SORT_17 var_323_arg_1 = var_322; [L973] SORT_17 var_323_arg_2 = var_99; [L974] EXPR var_323_arg_0 ? var_323_arg_1 : var_323_arg_2 [L974] SORT_17 var_323 = var_323_arg_0 ? var_323_arg_1 : var_323_arg_2; [L975] SORT_1 var_324_arg_0 = var_42; [L976] SORT_17 var_324_arg_1 = var_99; [L977] SORT_17 var_324_arg_2 = var_323; [L978] EXPR var_324_arg_0 ? var_324_arg_1 : var_324_arg_2 [L978] SORT_17 var_324 = var_324_arg_0 ? var_324_arg_1 : var_324_arg_2; [L979] SORT_1 var_325_arg_0 = var_96; [L980] SORT_17 var_325_arg_1 = var_304; [L981] SORT_17 var_325_arg_2 = var_324; [L982] EXPR var_325_arg_0 ? var_325_arg_1 : var_325_arg_2 [L982] SORT_17 var_325 = var_325_arg_0 ? var_325_arg_1 : var_325_arg_2; [L983] var_325 = var_325 & mask_SORT_17 [L984] SORT_17 var_326_arg_0 = var_325; [L985] SORT_17 var_326_arg_1 = var_311; [L986] SORT_1 var_326 = var_326_arg_0 == var_326_arg_1; [L987] SORT_1 var_327_arg_0 = var_326; [L988] SORT_1 var_327 = ~var_327_arg_0; [L989] SORT_1 var_328_arg_0 = var_327; [L990] SORT_1 var_328_arg_1 = var_310; [L991] SORT_6 var_328 = ((SORT_6)var_328_arg_0 << 1) | var_328_arg_1; [L992] var_328 = var_328 & mask_SORT_6 [L993] SORT_1 var_329_arg_0 = var_316; [L994] SORT_6 var_329_arg_1 = var_328; [L995] SORT_8 var_329 = ((SORT_8)var_329_arg_0 << 2) | var_329_arg_1; [L996] var_329 = var_329 & mask_SORT_8 [L997] SORT_8 var_330_arg_0 = var_329; [L998] SORT_1 var_330 = var_330_arg_0 == mask_SORT_8; [L999] SORT_1 var_331_arg_0 = var_319; [L1000] SORT_1 var_331_arg_1 = var_330; [L1001] SORT_1 var_331 = var_331_arg_0 == var_331_arg_1; [L1002] SORT_1 var_332_arg_0 = var_30; [L1003] SORT_1 var_332_arg_1 = var_331; [L1004] SORT_1 var_332 = var_332_arg_0 | var_332_arg_1; [L1005] SORT_1 var_335_arg_0 = var_332; [L1006] SORT_1 var_335 = ~var_335_arg_0; [L1007] SORT_1 var_336_arg_0 = var_52; [L1008] SORT_1 var_336_arg_1 = var_335; [L1009] SORT_1 var_336 = var_336_arg_0 & var_336_arg_1; [L1010] var_336 = var_336 & mask_SORT_1 [L1011] SORT_1 bad_337_arg_0 = var_336; [L1012] CALL __VERIFIER_assert(!(bad_337_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: 85.5s, 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: 0.1s SsaConstructionTime, 47.8s 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 02:51:00,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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 f0d9930c6b61c981c9ae16145fb1383f480baebf8f73a8cff221b2b7162b19fa --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:51:03,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:51:03,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:51:03,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:51:03,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:51:03,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:51:03,053 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:51:03,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:51:03,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:51:03,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:51:03,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:51:03,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:51:03,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:51:03,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:51:03,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:51:03,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:51:03,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:51:03,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:51:03,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:51:03,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:51:03,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:51:03,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:51:03,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:51:03,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:51:03,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:51:03,081 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:51:03,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:51:03,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:51:03,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:51:03,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:51:03,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:51:03,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:51:03,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:51:03,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:51:03,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:51:03,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:51:03,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:51:03,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:51:03,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:51:03,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:51:03,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:51:03,093 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:51:03,125 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:51:03,125 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:51:03,125 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:51:03,126 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:51:03,126 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:51:03,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:51:03,127 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:51:03,127 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:51:03,127 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:51:03,127 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:51:03,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:51:03,128 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:51:03,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:51:03,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:51:03,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:51:03,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:51:03,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:51:03,130 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:51:03,130 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:51:03,130 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:51:03,130 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:51:03,130 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:51:03,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:51:03,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:51:03,131 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:51:03,131 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:51:03,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:51:03,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:51:03,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:51:03,132 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:51:03,132 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:51:03,132 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:51:03,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:51:03,133 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:51:03,133 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:51:03,133 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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0d9930c6b61c981c9ae16145fb1383f480baebf8f73a8cff221b2b7162b19fa [2022-11-03 02:51:03,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:51:03,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:51:03,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:51:03,564 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:51:03,565 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:51:03,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c [2022-11-03 02:51:03,645 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data/db31de3b2/537a700fa28448ecaf46ee92d147dc3f/FLAG8c4cd6cfb [2022-11-03 02:51:04,417 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:51:04,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c [2022-11-03 02:51:04,434 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data/db31de3b2/537a700fa28448ecaf46ee92d147dc3f/FLAG8c4cd6cfb [2022-11-03 02:51:04,456 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/data/db31de3b2/537a700fa28448ecaf46ee92d147dc3f [2022-11-03 02:51:04,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:51:04,460 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:51:04,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:51:04,461 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:51:04,466 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:51:04,467 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:51:04" (1/1) ... [2022-11-03 02:51:04,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12c8f966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:04, skipping insertion in model container [2022-11-03 02:51:04,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:51:04" (1/1) ... [2022-11-03 02:51:04,477 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:51:04,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:51:04,768 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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c[1107,1120] [2022-11-03 02:51:05,179 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:51:05,183 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:51:05,197 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_6e7aca46-94b2-411a-9fa5-0740abfc8e10/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cal6.c[1107,1120] [2022-11-03 02:51:05,329 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:51:05,344 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:51:05,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05 WrapperNode [2022-11-03 02:51:05,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:51:05,346 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:51:05,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:51:05,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:51:05,355 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,399 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,539 INFO L138 Inliner]: procedures = 11, calls = 3, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1855 [2022-11-03 02:51:05,539 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:51:05,540 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:51:05,540 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:51:05,540 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:51:05,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,580 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,629 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,636 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:51:05,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:51:05,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:51:05,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:51:05,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (1/1) ... [2022-11-03 02:51:05,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:51:05,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:51:05,682 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:51:05,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:51:05,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:51:05,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:51:06,224 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:51:06,235 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:51:07,728 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:51:07,743 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:51:07,743 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:51:07,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:51:07 BoogieIcfgContainer [2022-11-03 02:51:07,746 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:51:07,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:51:07,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:51:07,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:51:07,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:51:04" (1/3) ... [2022-11-03 02:51:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe59284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:51:07, skipping insertion in model container [2022-11-03 02:51:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:51:05" (2/3) ... [2022-11-03 02:51:07,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe59284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:51:07, skipping insertion in model container [2022-11-03 02:51:07,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:51:07" (3/3) ... [2022-11-03 02:51:07,756 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cal6.c [2022-11-03 02:51:07,775 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:51:07,776 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:51:07,857 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:51:07,866 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;@1e8b348a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:51:07,867 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:51:07,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:07,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:07,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:07,889 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:07,890 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:07,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:07,898 INFO L85 PathProgramCache]: Analyzing trace with hash 177634553, now seen corresponding path program 1 times [2022-11-03 02:51:07,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:07,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1899313960] [2022-11-03 02:51:07,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:07,917 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:07,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:07,925 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:07,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:51:08,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:08,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:08,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:09,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:09,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:09,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:09,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1899313960] [2022-11-03 02:51:09,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1899313960] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:09,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:09,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:09,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257420158] [2022-11-03 02:51:09,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:09,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:09,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:09,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:09,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:09,087 INFO L87 Difference]: Start difference. First operand has 209 states, 207 states have (on average 1.497584541062802) internal successors, (310), 208 states have internal predecessors, (310), 0 states have call successors, (0), 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 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:09,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:09,384 INFO L93 Difference]: Finished difference Result 818 states and 1225 transitions. [2022-11-03 02:51:09,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:09,387 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:09,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:09,401 INFO L225 Difference]: With dead ends: 818 [2022-11-03 02:51:09,401 INFO L226 Difference]: Without dead ends: 611 [2022-11-03 02:51:09,405 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:09,408 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 2092 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2092 SdHoareTripleChecker+Valid, 1193 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:09,409 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2092 Valid, 1193 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:09,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2022-11-03 02:51:09,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 207. [2022-11-03 02:51:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.4854368932038835) internal successors, (306), 206 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:09,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 306 transitions. [2022-11-03 02:51:09,508 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 306 transitions. Word has length 115 [2022-11-03 02:51:09,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:09,508 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 306 transitions. [2022-11-03 02:51:09,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:09,509 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 306 transitions. [2022-11-03 02:51:09,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:09,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:09,511 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:09,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:09,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:09,728 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:09,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:09,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1953716169, now seen corresponding path program 1 times [2022-11-03 02:51:09,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:09,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1099559862] [2022-11-03 02:51:09,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:09,731 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:09,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:09,733 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:09,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:51:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:10,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:10,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:10,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:10,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:10,605 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:10,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1099559862] [2022-11-03 02:51:10,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1099559862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:10,606 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:10,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:10,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659669344] [2022-11-03 02:51:10,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:10,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:10,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:10,617 INFO L87 Difference]: Start difference. First operand 207 states and 306 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:10,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:10,861 INFO L93 Difference]: Finished difference Result 820 states and 1214 transitions. [2022-11-03 02:51:10,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:10,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:10,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:10,866 INFO L225 Difference]: With dead ends: 820 [2022-11-03 02:51:10,866 INFO L226 Difference]: Without dead ends: 615 [2022-11-03 02:51:10,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:10,873 INFO L413 NwaCegarLoop]: 304 mSDtfsCounter, 2084 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2084 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:10,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2084 Valid, 1195 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-11-03 02:51:10,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 211. [2022-11-03 02:51:10,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 210 states have (on average 1.480952380952381) internal successors, (311), 210 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:10,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 311 transitions. [2022-11-03 02:51:10,901 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 311 transitions. Word has length 115 [2022-11-03 02:51:10,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:10,902 INFO L495 AbstractCegarLoop]: Abstraction has 211 states and 311 transitions. [2022-11-03 02:51:10,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:10,909 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 311 transitions. [2022-11-03 02:51:10,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:10,914 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:10,914 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:10,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:11,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:11,144 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:11,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1717969525, now seen corresponding path program 1 times [2022-11-03 02:51:11,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:11,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2010229554] [2022-11-03 02:51:11,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:11,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:11,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:11,148 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:11,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:51:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:11,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:11,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:11,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:11,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:11,960 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:11,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2010229554] [2022-11-03 02:51:11,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2010229554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:11,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:11,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:11,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705353915] [2022-11-03 02:51:11,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:11,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:11,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:11,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:11,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:11,971 INFO L87 Difference]: Start difference. First operand 211 states and 311 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:12,204 INFO L93 Difference]: Finished difference Result 826 states and 1220 transitions. [2022-11-03 02:51:12,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:12,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:12,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:12,208 INFO L225 Difference]: With dead ends: 826 [2022-11-03 02:51:12,208 INFO L226 Difference]: Without dead ends: 617 [2022-11-03 02:51:12,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:12,212 INFO L413 NwaCegarLoop]: 306 mSDtfsCounter, 2078 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:12,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1197 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:12,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-11-03 02:51:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 213. [2022-11-03 02:51:12,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 212 states have (on average 1.4764150943396226) internal successors, (313), 212 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:12,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 313 transitions. [2022-11-03 02:51:12,237 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 313 transitions. Word has length 115 [2022-11-03 02:51:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:12,237 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 313 transitions. [2022-11-03 02:51:12,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:12,238 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 313 transitions. [2022-11-03 02:51:12,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:12,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:12,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:12,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:12,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:12,458 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1187703757, now seen corresponding path program 1 times [2022-11-03 02:51:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:12,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1434198106] [2022-11-03 02:51:12,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:12,461 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:12,461 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:12,465 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:12,482 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:51:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:13,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:51:13,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:13,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:13,284 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:13,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1434198106] [2022-11-03 02:51:13,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1434198106] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:13,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:13,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:13,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453170928] [2022-11-03 02:51:13,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:13,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:13,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:13,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:13,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:13,286 INFO L87 Difference]: Start difference. First operand 213 states and 313 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:13,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:13,989 INFO L93 Difference]: Finished difference Result 841 states and 1238 transitions. [2022-11-03 02:51:13,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:51:13,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:13,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:13,992 INFO L225 Difference]: With dead ends: 841 [2022-11-03 02:51:13,992 INFO L226 Difference]: Without dead ends: 630 [2022-11-03 02:51:13,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:51:14,015 INFO L413 NwaCegarLoop]: 292 mSDtfsCounter, 2388 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2388 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:14,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2388 Valid, 1698 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:51:14,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2022-11-03 02:51:14,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 215. [2022-11-03 02:51:14,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 214 states have (on average 1.47196261682243) internal successors, (315), 214 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:14,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 315 transitions. [2022-11-03 02:51:14,025 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 315 transitions. Word has length 115 [2022-11-03 02:51:14,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:14,026 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 315 transitions. [2022-11-03 02:51:14,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:14,026 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 315 transitions. [2022-11-03 02:51:14,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:14,027 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:14,028 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:14,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:14,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:14,245 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:14,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1240554865, now seen corresponding path program 1 times [2022-11-03 02:51:14,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:14,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2025419615] [2022-11-03 02:51:14,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:14,247 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:14,247 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:14,248 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:14,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:51:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:14,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 02:51:14,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:15,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:15,034 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:15,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2025419615] [2022-11-03 02:51:15,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2025419615] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:15,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:15,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:51:15,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681591241] [2022-11-03 02:51:15,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:15,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:51:15,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:15,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:51:15,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:51:15,037 INFO L87 Difference]: Start difference. First operand 215 states and 315 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:16,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:16,310 INFO L93 Difference]: Finished difference Result 1083 states and 1580 transitions. [2022-11-03 02:51:16,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-03 02:51:16,311 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:16,314 INFO L225 Difference]: With dead ends: 1083 [2022-11-03 02:51:16,314 INFO L226 Difference]: Without dead ends: 870 [2022-11-03 02:51:16,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=384, Invalid=1022, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 02:51:16,316 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 5593 mSDsluCounter, 2261 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5593 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:16,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5593 Valid, 2545 Invalid, 414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-03 02:51:16,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-11-03 02:51:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 225. [2022-11-03 02:51:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.4553571428571428) internal successors, (326), 224 states have internal predecessors, (326), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:16,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 326 transitions. [2022-11-03 02:51:16,327 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 326 transitions. Word has length 115 [2022-11-03 02:51:16,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:16,328 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 326 transitions. [2022-11-03 02:51:16,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 12 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 326 transitions. [2022-11-03 02:51:16,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:16,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:16,329 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:16,351 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:16,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:16,546 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:16,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:16,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1148009165, now seen corresponding path program 1 times [2022-11-03 02:51:16,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:16,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [715134394] [2022-11-03 02:51:16,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:16,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:16,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:16,549 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:16,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:51:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:17,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 38 conjunts are in the unsatisfiable core [2022-11-03 02:51:17,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:17,636 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:17,636 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:17,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [715134394] [2022-11-03 02:51:17,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [715134394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:17,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:17,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:17,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499306835] [2022-11-03 02:51:17,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:17,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:17,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:17,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:17,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:17,638 INFO L87 Difference]: Start difference. First operand 225 states and 326 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:18,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:18,162 INFO L93 Difference]: Finished difference Result 868 states and 1265 transitions. [2022-11-03 02:51:18,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:18,163 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:18,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:18,166 INFO L225 Difference]: With dead ends: 868 [2022-11-03 02:51:18,166 INFO L226 Difference]: Without dead ends: 645 [2022-11-03 02:51:18,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:18,167 INFO L413 NwaCegarLoop]: 303 mSDtfsCounter, 2062 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2062 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:18,167 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2062 Valid, 1155 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:51:18,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-03 02:51:18,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 231. [2022-11-03 02:51:18,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 230 states have (on average 1.4521739130434783) internal successors, (334), 230 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:18,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 334 transitions. [2022-11-03 02:51:18,177 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 334 transitions. Word has length 115 [2022-11-03 02:51:18,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:18,177 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 334 transitions. [2022-11-03 02:51:18,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:18,177 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 334 transitions. [2022-11-03 02:51:18,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:18,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:18,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:18,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:18,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:18,395 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:18,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:18,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2090226929, now seen corresponding path program 1 times [2022-11-03 02:51:18,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:18,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279486276] [2022-11-03 02:51:18,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:18,397 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:18,399 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:18,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:51:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:18,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:18,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:19,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:19,159 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:19,159 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:19,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279486276] [2022-11-03 02:51:19,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279486276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:19,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:19,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:19,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142631019] [2022-11-03 02:51:19,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:19,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:19,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:19,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:19,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:19,162 INFO L87 Difference]: Start difference. First operand 231 states and 334 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:19,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:19,402 INFO L93 Difference]: Finished difference Result 962 states and 1385 transitions. [2022-11-03 02:51:19,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:19,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:19,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:19,405 INFO L225 Difference]: With dead ends: 962 [2022-11-03 02:51:19,406 INFO L226 Difference]: Without dead ends: 733 [2022-11-03 02:51:19,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:19,407 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 2047 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2047 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:19,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2047 Valid, 1301 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:19,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-11-03 02:51:19,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 233. [2022-11-03 02:51:19,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 1.4482758620689655) internal successors, (336), 232 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:19,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 336 transitions. [2022-11-03 02:51:19,423 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 336 transitions. Word has length 115 [2022-11-03 02:51:19,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:19,423 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 336 transitions. [2022-11-03 02:51:19,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 336 transitions. [2022-11-03 02:51:19,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:19,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:19,425 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:19,441 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-03 02:51:19,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:19,642 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:19,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:19,643 INFO L85 PathProgramCache]: Analyzing trace with hash 2061726639, now seen corresponding path program 1 times [2022-11-03 02:51:19,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:19,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2053237908] [2022-11-03 02:51:19,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:19,644 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:19,645 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:19,646 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:19,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:51:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:20,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:20,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:20,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:20,413 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:20,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2053237908] [2022-11-03 02:51:20,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2053237908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:20,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:20,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:20,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911936742] [2022-11-03 02:51:20,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:20,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:20,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:20,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:20,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:20,416 INFO L87 Difference]: Start difference. First operand 233 states and 336 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:20,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:20,627 INFO L93 Difference]: Finished difference Result 968 states and 1391 transitions. [2022-11-03 02:51:20,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:20,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:20,633 INFO L225 Difference]: With dead ends: 968 [2022-11-03 02:51:20,634 INFO L226 Difference]: Without dead ends: 737 [2022-11-03 02:51:20,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:20,636 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 2039 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2039 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:20,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2039 Valid, 1307 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:20,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2022-11-03 02:51:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 237. [2022-11-03 02:51:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 236 states have (on average 1.444915254237288) internal successors, (341), 236 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 341 transitions. [2022-11-03 02:51:20,661 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 341 transitions. Word has length 115 [2022-11-03 02:51:20,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:20,662 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 341 transitions. [2022-11-03 02:51:20,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:20,663 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 341 transitions. [2022-11-03 02:51:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:20,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:20,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:20,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-11-03 02:51:20,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:20,882 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:20,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:20,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1067032941, now seen corresponding path program 1 times [2022-11-03 02:51:20,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:20,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1953053125] [2022-11-03 02:51:20,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:20,890 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:20,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:20,892 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:20,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:51:21,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:21,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:21,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:21,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:21,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:21,667 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:21,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1953053125] [2022-11-03 02:51:21,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1953053125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:21,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:21,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:21,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491457316] [2022-11-03 02:51:21,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:21,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:21,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:21,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:21,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:21,670 INFO L87 Difference]: Start difference. First operand 237 states and 341 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:21,886 INFO L93 Difference]: Finished difference Result 974 states and 1397 transitions. [2022-11-03 02:51:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:21,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:21,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:21,890 INFO L225 Difference]: With dead ends: 974 [2022-11-03 02:51:21,890 INFO L226 Difference]: Without dead ends: 739 [2022-11-03 02:51:21,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:21,892 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 2033 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2033 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:21,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2033 Valid, 1310 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:21,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-03 02:51:21,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 239. [2022-11-03 02:51:21,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 238 states have (on average 1.4411764705882353) internal successors, (343), 238 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:21,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 343 transitions. [2022-11-03 02:51:21,904 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 343 transitions. Word has length 115 [2022-11-03 02:51:21,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:21,904 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 343 transitions. [2022-11-03 02:51:21,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:21,905 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 343 transitions. [2022-11-03 02:51:21,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:21,906 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:21,906 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:21,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-11-03 02:51:22,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:22,123 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:22,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:22,123 INFO L85 PathProgramCache]: Analyzing trace with hash -891541845, now seen corresponding path program 1 times [2022-11-03 02:51:22,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:22,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1260396010] [2022-11-03 02:51:22,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:22,124 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:22,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:22,126 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:22,129 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:51:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:22,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:22,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:22,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:22,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:22,813 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:22,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1260396010] [2022-11-03 02:51:22,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1260396010] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:22,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:22,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:22,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012241054] [2022-11-03 02:51:22,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:22,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:22,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:22,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:22,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:22,815 INFO L87 Difference]: Start difference. First operand 239 states and 343 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:23,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:23,054 INFO L93 Difference]: Finished difference Result 982 states and 1406 transitions. [2022-11-03 02:51:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:23,055 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:23,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:23,058 INFO L225 Difference]: With dead ends: 982 [2022-11-03 02:51:23,058 INFO L226 Difference]: Without dead ends: 745 [2022-11-03 02:51:23,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:23,059 INFO L413 NwaCegarLoop]: 344 mSDtfsCounter, 2023 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2023 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:23,060 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2023 Valid, 1319 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:23,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 745 states. [2022-11-03 02:51:23,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 745 to 245. [2022-11-03 02:51:23,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 244 states have (on average 1.4385245901639345) internal successors, (351), 244 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:23,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 351 transitions. [2022-11-03 02:51:23,071 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 351 transitions. Word has length 115 [2022-11-03 02:51:23,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:23,071 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 351 transitions. [2022-11-03 02:51:23,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:23,072 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 351 transitions. [2022-11-03 02:51:23,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:23,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:23,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:23,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:23,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:23,290 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:23,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:23,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2034044311, now seen corresponding path program 1 times [2022-11-03 02:51:23,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:23,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620437120] [2022-11-03 02:51:23,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:23,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:23,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:23,293 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:23,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:51:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:23,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:23,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:23,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:23,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:23,980 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:23,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620437120] [2022-11-03 02:51:23,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620437120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:23,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:23,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:23,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269302628] [2022-11-03 02:51:23,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:23,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:23,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:23,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:23,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:23,983 INFO L87 Difference]: Start difference. First operand 245 states and 351 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:24,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:24,281 INFO L93 Difference]: Finished difference Result 990 states and 1415 transitions. [2022-11-03 02:51:24,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:24,282 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:24,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:24,284 INFO L225 Difference]: With dead ends: 990 [2022-11-03 02:51:24,284 INFO L226 Difference]: Without dead ends: 747 [2022-11-03 02:51:24,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:24,285 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 2017 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2017 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:24,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2017 Valid, 1318 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:51:24,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-03 02:51:24,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 247. [2022-11-03 02:51:24,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 246 states have (on average 1.434959349593496) internal successors, (353), 246 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:24,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 353 transitions. [2022-11-03 02:51:24,298 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 353 transitions. Word has length 115 [2022-11-03 02:51:24,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:24,299 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 353 transitions. [2022-11-03 02:51:24,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:24,299 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 353 transitions. [2022-11-03 02:51:24,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:24,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:24,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:24,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:24,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:24,517 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:24,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:24,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1195010649, now seen corresponding path program 1 times [2022-11-03 02:51:24,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:24,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882997549] [2022-11-03 02:51:24,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:24,519 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:24,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:24,519 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:24,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:51:24,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:24,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:51:25,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:25,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:25,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:25,348 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:25,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882997549] [2022-11-03 02:51:25,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882997549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:25,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:25,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:25,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999925089] [2022-11-03 02:51:25,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:25,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:25,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:25,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:25,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:25,350 INFO L87 Difference]: Start difference. First operand 247 states and 353 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:25,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:25,816 INFO L93 Difference]: Finished difference Result 994 states and 1418 transitions. [2022-11-03 02:51:25,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:25,817 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:25,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:25,820 INFO L225 Difference]: With dead ends: 994 [2022-11-03 02:51:25,820 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 02:51:25,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:25,821 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 2011 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:25,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 1249 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:51:25,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 02:51:25,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 249. [2022-11-03 02:51:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 248 states have (on average 1.4314516129032258) internal successors, (355), 248 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:25,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 355 transitions. [2022-11-03 02:51:25,833 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 355 transitions. Word has length 115 [2022-11-03 02:51:25,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:25,833 INFO L495 AbstractCegarLoop]: Abstraction has 249 states and 355 transitions. [2022-11-03 02:51:25,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:25,834 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 355 transitions. [2022-11-03 02:51:25,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:25,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:25,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:25,853 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:26,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:26,046 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:26,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:26,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1022619749, now seen corresponding path program 1 times [2022-11-03 02:51:26,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:26,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [970378642] [2022-11-03 02:51:26,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:26,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:26,049 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:26,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 02:51:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:26,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:26,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:26,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:26,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:26,745 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:26,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [970378642] [2022-11-03 02:51:26,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [970378642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:26,745 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:26,745 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:26,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862679810] [2022-11-03 02:51:26,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:26,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:26,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:26,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:26,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:26,747 INFO L87 Difference]: Start difference. First operand 249 states and 355 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:27,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:27,052 INFO L93 Difference]: Finished difference Result 998 states and 1421 transitions. [2022-11-03 02:51:27,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:27,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:27,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:27,056 INFO L225 Difference]: With dead ends: 998 [2022-11-03 02:51:27,056 INFO L226 Difference]: Without dead ends: 751 [2022-11-03 02:51:27,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:27,057 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 2005 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2005 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:27,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2005 Valid, 1324 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:51:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2022-11-03 02:51:27,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 251. [2022-11-03 02:51:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 1.428) internal successors, (357), 250 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 357 transitions. [2022-11-03 02:51:27,071 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 357 transitions. Word has length 115 [2022-11-03 02:51:27,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:27,072 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 357 transitions. [2022-11-03 02:51:27,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:27,072 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 357 transitions. [2022-11-03 02:51:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:27,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:27,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:27,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:27,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:27,294 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:27,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:27,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1909842595, now seen corresponding path program 1 times [2022-11-03 02:51:27,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:27,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164898213] [2022-11-03 02:51:27,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:27,295 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:27,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:27,296 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:27,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-03 02:51:27,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:27,785 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:27,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:27,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:27,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:27,975 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:27,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164898213] [2022-11-03 02:51:27,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164898213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:27,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:27,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542622114] [2022-11-03 02:51:27,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:27,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:27,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:27,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:27,977 INFO L87 Difference]: Start difference. First operand 251 states and 357 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:28,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:28,253 INFO L93 Difference]: Finished difference Result 1002 states and 1424 transitions. [2022-11-03 02:51:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:28,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:28,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:28,257 INFO L225 Difference]: With dead ends: 1002 [2022-11-03 02:51:28,257 INFO L226 Difference]: Without dead ends: 753 [2022-11-03 02:51:28,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:28,259 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1999 mSDsluCounter, 972 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1999 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:28,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1999 Valid, 1327 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:51:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-03 02:51:28,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 253. [2022-11-03 02:51:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 252 states have (on average 1.4246031746031746) internal successors, (359), 252 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 359 transitions. [2022-11-03 02:51:28,273 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 359 transitions. Word has length 115 [2022-11-03 02:51:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:28,273 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 359 transitions. [2022-11-03 02:51:28,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 359 transitions. [2022-11-03 02:51:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:28,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:28,276 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:28,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-03 02:51:28,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:28,490 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:28,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:28,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1986743393, now seen corresponding path program 1 times [2022-11-03 02:51:28,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:28,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26390746] [2022-11-03 02:51:28,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:28,492 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:28,492 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:28,493 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:28,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 02:51:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:29,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:51:29,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:29,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:29,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:29,304 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:29,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26390746] [2022-11-03 02:51:29,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26390746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:29,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:29,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:29,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759067511] [2022-11-03 02:51:29,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:29,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:29,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:29,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:29,307 INFO L87 Difference]: Start difference. First operand 253 states and 359 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:29,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:29,774 INFO L93 Difference]: Finished difference Result 1006 states and 1427 transitions. [2022-11-03 02:51:29,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:29,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:29,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:29,777 INFO L225 Difference]: With dead ends: 1006 [2022-11-03 02:51:29,777 INFO L226 Difference]: Without dead ends: 755 [2022-11-03 02:51:29,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:29,778 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1993 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1993 SdHoareTripleChecker+Valid, 1258 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:29,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1993 Valid, 1258 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:51:29,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-03 02:51:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 255. [2022-11-03 02:51:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.421259842519685) internal successors, (361), 254 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 361 transitions. [2022-11-03 02:51:29,791 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 361 transitions. Word has length 115 [2022-11-03 02:51:29,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:29,792 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 361 transitions. [2022-11-03 02:51:29,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:29,792 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 361 transitions. [2022-11-03 02:51:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:29,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:29,794 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:29,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:30,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:30,011 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:30,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:30,012 INFO L85 PathProgramCache]: Analyzing trace with hash -399766113, now seen corresponding path program 1 times [2022-11-03 02:51:30,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:30,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [342010418] [2022-11-03 02:51:30,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:30,013 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:30,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:30,014 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:30,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-11-03 02:51:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:30,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:51:30,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:31,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:31,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:31,472 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:31,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [342010418] [2022-11-03 02:51:31,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [342010418] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:31,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:31,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:31,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235927603] [2022-11-03 02:51:31,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:31,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:31,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:31,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:31,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:31,475 INFO L87 Difference]: Start difference. First operand 255 states and 361 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:31,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:31,983 INFO L93 Difference]: Finished difference Result 1010 states and 1430 transitions. [2022-11-03 02:51:31,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:31,984 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:31,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:31,987 INFO L225 Difference]: With dead ends: 1010 [2022-11-03 02:51:31,987 INFO L226 Difference]: Without dead ends: 757 [2022-11-03 02:51:31,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:51:31,988 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 1987 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1987 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:31,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1987 Valid, 1281 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:51:31,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-03 02:51:32,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 257. [2022-11-03 02:51:32,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.41796875) internal successors, (363), 256 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:32,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 363 transitions. [2022-11-03 02:51:32,002 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 363 transitions. Word has length 115 [2022-11-03 02:51:32,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:32,002 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 363 transitions. [2022-11-03 02:51:32,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:32,003 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 363 transitions. [2022-11-03 02:51:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:32,003 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:32,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:32,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:32,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:32,218 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:32,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:32,219 INFO L85 PathProgramCache]: Analyzing trace with hash 554174045, now seen corresponding path program 1 times [2022-11-03 02:51:32,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:32,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344509574] [2022-11-03 02:51:32,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:32,220 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:32,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:32,221 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:32,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-11-03 02:51:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:32,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:51:32,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:33,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:33,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:33,169 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:33,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344509574] [2022-11-03 02:51:33,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344509574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:33,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:33,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:33,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602227005] [2022-11-03 02:51:33,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:33,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:33,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:33,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:33,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:33,171 INFO L87 Difference]: Start difference. First operand 257 states and 363 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:33,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:33,450 INFO L93 Difference]: Finished difference Result 840 states and 1175 transitions. [2022-11-03 02:51:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:51:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:33,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:33,452 INFO L225 Difference]: With dead ends: 840 [2022-11-03 02:51:33,452 INFO L226 Difference]: Without dead ends: 585 [2022-11-03 02:51:33,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:51:33,454 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 572 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:33,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 1684 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 43 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-11-03 02:51:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-11-03 02:51:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 331. [2022-11-03 02:51:33,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 330 states have (on average 1.3757575757575757) internal successors, (454), 330 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:33,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 454 transitions. [2022-11-03 02:51:33,472 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 454 transitions. Word has length 115 [2022-11-03 02:51:33,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:33,473 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 454 transitions. [2022-11-03 02:51:33,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:33,473 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 454 transitions. [2022-11-03 02:51:33,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:33,474 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:33,474 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:33,496 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:33,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:33,696 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:33,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1286141471, now seen corresponding path program 1 times [2022-11-03 02:51:33,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:33,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1692311873] [2022-11-03 02:51:33,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:33,698 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:33,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:33,698 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:33,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 02:51:34,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:34,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:34,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:34,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:34,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:34,556 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:34,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1692311873] [2022-11-03 02:51:34,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1692311873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:34,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:34,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:34,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743221540] [2022-11-03 02:51:34,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:34,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:34,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:34,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:34,561 INFO L87 Difference]: Start difference. First operand 331 states and 454 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:34,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:34,930 INFO L93 Difference]: Finished difference Result 1001 states and 1412 transitions. [2022-11-03 02:51:34,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:51:34,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:34,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:34,932 INFO L225 Difference]: With dead ends: 1001 [2022-11-03 02:51:34,932 INFO L226 Difference]: Without dead ends: 746 [2022-11-03 02:51:34,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:51:34,934 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 1872 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:34,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1298 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:51:34,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-11-03 02:51:34,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 335. [2022-11-03 02:51:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 335 states, 334 states have (on average 1.374251497005988) internal successors, (459), 334 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 459 transitions. [2022-11-03 02:51:34,952 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 459 transitions. Word has length 115 [2022-11-03 02:51:34,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:34,953 INFO L495 AbstractCegarLoop]: Abstraction has 335 states and 459 transitions. [2022-11-03 02:51:34,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:34,953 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 459 transitions. [2022-11-03 02:51:34,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:34,954 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:34,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:34,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:35,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:35,162 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:35,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:35,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1231748573, now seen corresponding path program 1 times [2022-11-03 02:51:35,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:35,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763563654] [2022-11-03 02:51:35,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:35,164 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:35,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:35,165 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:35,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 02:51:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:35,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:35,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:35,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:35,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:35,938 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:35,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763563654] [2022-11-03 02:51:35,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763563654] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:35,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:35,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:35,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636998338] [2022-11-03 02:51:35,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:35,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:35,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:35,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:35,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:35,942 INFO L87 Difference]: Start difference. First operand 335 states and 459 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:36,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:36,434 INFO L93 Difference]: Finished difference Result 1110 states and 1553 transitions. [2022-11-03 02:51:36,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:36,435 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:36,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:36,437 INFO L225 Difference]: With dead ends: 1110 [2022-11-03 02:51:36,437 INFO L226 Difference]: Without dead ends: 851 [2022-11-03 02:51:36,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:36,440 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 2301 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2301 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:36,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2301 Valid, 1885 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:51:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-11-03 02:51:36,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 337. [2022-11-03 02:51:36,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 1.3720238095238095) internal successors, (461), 336 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:36,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 461 transitions. [2022-11-03 02:51:36,457 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 461 transitions. Word has length 115 [2022-11-03 02:51:36,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:36,458 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 461 transitions. [2022-11-03 02:51:36,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:36,458 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 461 transitions. [2022-11-03 02:51:36,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:36,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:36,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:36,476 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:36,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:36,672 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:36,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:36,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1911020827, now seen corresponding path program 1 times [2022-11-03 02:51:36,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:36,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226905154] [2022-11-03 02:51:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:36,674 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:36,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:36,675 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:36,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 02:51:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:37,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:51:37,209 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:37,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:37,814 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:37,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226905154] [2022-11-03 02:51:37,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226905154] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:37,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:37,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:37,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754031555] [2022-11-03 02:51:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:37,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:37,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:37,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:37,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:37,819 INFO L87 Difference]: Start difference. First operand 337 states and 461 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:38,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:38,631 INFO L93 Difference]: Finished difference Result 1114 states and 1556 transitions. [2022-11-03 02:51:38,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:38,632 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:38,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:38,634 INFO L225 Difference]: With dead ends: 1114 [2022-11-03 02:51:38,635 INFO L226 Difference]: Without dead ends: 853 [2022-11-03 02:51:38,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:38,636 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 2291 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2291 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:38,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2291 Valid, 1809 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:51:38,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-11-03 02:51:38,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 339. [2022-11-03 02:51:38,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 338 states have (on average 1.3698224852071006) internal successors, (463), 338 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:38,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 463 transitions. [2022-11-03 02:51:38,662 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 463 transitions. Word has length 115 [2022-11-03 02:51:38,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:38,663 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 463 transitions. [2022-11-03 02:51:38,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:38,663 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 463 transitions. [2022-11-03 02:51:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:38,664 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:38,664 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:38,688 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:38,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:38,883 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:38,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:38,883 INFO L85 PathProgramCache]: Analyzing trace with hash 2112844761, now seen corresponding path program 1 times [2022-11-03 02:51:38,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:38,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1268376571] [2022-11-03 02:51:38,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:38,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:38,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:38,885 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:38,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 02:51:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:39,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:39,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:39,647 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:39,647 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:39,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1268376571] [2022-11-03 02:51:39,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1268376571] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:39,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:39,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:39,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704495669] [2022-11-03 02:51:39,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:39,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:39,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:39,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:39,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:39,650 INFO L87 Difference]: Start difference. First operand 339 states and 463 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:40,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:40,142 INFO L93 Difference]: Finished difference Result 1118 states and 1559 transitions. [2022-11-03 02:51:40,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:40,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:40,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:40,146 INFO L225 Difference]: With dead ends: 1118 [2022-11-03 02:51:40,146 INFO L226 Difference]: Without dead ends: 855 [2022-11-03 02:51:40,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:40,147 INFO L413 NwaCegarLoop]: 371 mSDtfsCounter, 2287 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2287 SdHoareTripleChecker+Valid, 1891 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:40,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2287 Valid, 1891 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:51:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-03 02:51:40,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 341. [2022-11-03 02:51:40,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 340 states have (on average 1.3676470588235294) internal successors, (465), 340 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 465 transitions. [2022-11-03 02:51:40,166 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 465 transitions. Word has length 115 [2022-11-03 02:51:40,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:40,167 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 465 transitions. [2022-11-03 02:51:40,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:40,167 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 465 transitions. [2022-11-03 02:51:40,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:40,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:40,168 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:40,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:40,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:40,382 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:40,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:40,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1748393449, now seen corresponding path program 1 times [2022-11-03 02:51:40,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:40,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242960048] [2022-11-03 02:51:40,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:40,383 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:40,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:40,384 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:40,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 02:51:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:40,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:40,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:41,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:41,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:41,095 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:41,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242960048] [2022-11-03 02:51:41,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [242960048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:41,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:41,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:41,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890991744] [2022-11-03 02:51:41,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:41,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:41,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:41,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:41,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:41,098 INFO L87 Difference]: Start difference. First operand 341 states and 465 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:41,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:41,699 INFO L93 Difference]: Finished difference Result 1122 states and 1562 transitions. [2022-11-03 02:51:41,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:41,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:41,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:41,702 INFO L225 Difference]: With dead ends: 1122 [2022-11-03 02:51:41,702 INFO L226 Difference]: Without dead ends: 857 [2022-11-03 02:51:41,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:41,704 INFO L413 NwaCegarLoop]: 374 mSDtfsCounter, 2280 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:41,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2280 Valid, 1894 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:51:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-03 02:51:41,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 343. [2022-11-03 02:51:41,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 342 states have (on average 1.3654970760233918) internal successors, (467), 342 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 467 transitions. [2022-11-03 02:51:41,728 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 467 transitions. Word has length 115 [2022-11-03 02:51:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:41,729 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 467 transitions. [2022-11-03 02:51:41,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:41,730 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 467 transitions. [2022-11-03 02:51:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:41,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:41,732 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:41,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:41,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:41,950 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:41,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1707718699, now seen corresponding path program 1 times [2022-11-03 02:51:41,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:41,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585408875] [2022-11-03 02:51:41,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:41,952 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:41,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:41,954 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:41,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 02:51:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:42,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:51:42,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:43,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:43,042 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:43,042 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:43,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585408875] [2022-11-03 02:51:43,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585408875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:43,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:43,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:43,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569247102] [2022-11-03 02:51:43,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:43,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:43,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:43,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:43,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:43,045 INFO L87 Difference]: Start difference. First operand 343 states and 467 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:43,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:43,764 INFO L93 Difference]: Finished difference Result 1126 states and 1565 transitions. [2022-11-03 02:51:43,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:43,764 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:43,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:43,767 INFO L225 Difference]: With dead ends: 1126 [2022-11-03 02:51:43,767 INFO L226 Difference]: Without dead ends: 859 [2022-11-03 02:51:43,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:43,768 INFO L413 NwaCegarLoop]: 362 mSDtfsCounter, 2270 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2270 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:43,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2270 Valid, 1818 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:51:43,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-11-03 02:51:43,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 345. [2022-11-03 02:51:43,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 1.3633720930232558) internal successors, (469), 344 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 469 transitions. [2022-11-03 02:51:43,801 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 469 transitions. Word has length 115 [2022-11-03 02:51:43,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:43,801 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 469 transitions. [2022-11-03 02:51:43,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:43,803 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 469 transitions. [2022-11-03 02:51:43,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:43,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:43,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:43,826 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:44,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:44,022 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:44,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:44,022 INFO L85 PathProgramCache]: Analyzing trace with hash -831699693, now seen corresponding path program 1 times [2022-11-03 02:51:44,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:44,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [566064406] [2022-11-03 02:51:44,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:44,024 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:44,024 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:44,025 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:44,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 02:51:44,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:44,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:44,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:44,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:44,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:44,851 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:44,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [566064406] [2022-11-03 02:51:44,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [566064406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:44,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:44,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:44,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782101640] [2022-11-03 02:51:44,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:44,854 INFO L87 Difference]: Start difference. First operand 345 states and 469 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:45,154 INFO L93 Difference]: Finished difference Result 1029 states and 1436 transitions. [2022-11-03 02:51:45,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:51:45,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:45,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:45,156 INFO L225 Difference]: With dead ends: 1029 [2022-11-03 02:51:45,156 INFO L226 Difference]: Without dead ends: 760 [2022-11-03 02:51:45,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:51:45,157 INFO L413 NwaCegarLoop]: 384 mSDtfsCounter, 1834 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1834 SdHoareTripleChecker+Valid, 1318 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:45,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1834 Valid, 1318 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:51:45,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-03 02:51:45,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 349. [2022-11-03 02:51:45,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 1.3620689655172413) internal successors, (474), 348 states have internal predecessors, (474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:45,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 474 transitions. [2022-11-03 02:51:45,184 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 474 transitions. Word has length 115 [2022-11-03 02:51:45,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:45,184 INFO L495 AbstractCegarLoop]: Abstraction has 349 states and 474 transitions. [2022-11-03 02:51:45,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:45,185 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 474 transitions. [2022-11-03 02:51:45,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:45,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:45,186 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:45,204 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:45,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:45,403 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:45,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:45,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1312779951, now seen corresponding path program 1 times [2022-11-03 02:51:45,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:45,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1700438111] [2022-11-03 02:51:45,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:45,406 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:45,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:45,408 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:45,426 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 02:51:45,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:45,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:45,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:46,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:46,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:46,146 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:46,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1700438111] [2022-11-03 02:51:46,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1700438111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:46,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:46,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:46,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001176504] [2022-11-03 02:51:46,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:46,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:46,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:46,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:46,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:46,148 INFO L87 Difference]: Start difference. First operand 349 states and 474 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:46,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:46,577 INFO L93 Difference]: Finished difference Result 1166 states and 1613 transitions. [2022-11-03 02:51:46,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:46,578 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:46,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:46,580 INFO L225 Difference]: With dead ends: 1166 [2022-11-03 02:51:46,580 INFO L226 Difference]: Without dead ends: 893 [2022-11-03 02:51:46,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:46,581 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 2314 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2314 SdHoareTripleChecker+Valid, 1905 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:46,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2314 Valid, 1905 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:51:46,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-11-03 02:51:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 351. [2022-11-03 02:51:46,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 350 states have (on average 1.36) internal successors, (476), 350 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 476 transitions. [2022-11-03 02:51:46,599 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 476 transitions. Word has length 115 [2022-11-03 02:51:46,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:46,600 INFO L495 AbstractCegarLoop]: Abstraction has 351 states and 476 transitions. [2022-11-03 02:51:46,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 476 transitions. [2022-11-03 02:51:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:46,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:46,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:46,617 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-03 02:51:46,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:46,814 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:46,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:46,814 INFO L85 PathProgramCache]: Analyzing trace with hash 626382095, now seen corresponding path program 1 times [2022-11-03 02:51:46,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:46,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779388744] [2022-11-03 02:51:46,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:46,815 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:46,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:46,816 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:46,817 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-03 02:51:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:47,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:51:47,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:47,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:47,857 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:47,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779388744] [2022-11-03 02:51:47,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779388744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:47,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:47,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:47,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39677197] [2022-11-03 02:51:47,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:47,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:47,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:47,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:47,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:47,860 INFO L87 Difference]: Start difference. First operand 351 states and 476 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:48,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:48,519 INFO L93 Difference]: Finished difference Result 1170 states and 1616 transitions. [2022-11-03 02:51:48,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:48,520 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:48,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:48,522 INFO L225 Difference]: With dead ends: 1170 [2022-11-03 02:51:48,522 INFO L226 Difference]: Without dead ends: 895 [2022-11-03 02:51:48,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:48,523 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 2304 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2304 SdHoareTripleChecker+Valid, 1829 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:48,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2304 Valid, 1829 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:51:48,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-03 02:51:48,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 353. [2022-11-03 02:51:48,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 352 states have (on average 1.3579545454545454) internal successors, (478), 352 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:48,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 478 transitions. [2022-11-03 02:51:48,542 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 478 transitions. Word has length 115 [2022-11-03 02:51:48,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:48,542 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 478 transitions. [2022-11-03 02:51:48,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:48,542 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 478 transitions. [2022-11-03 02:51:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:48,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:48,543 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:48,559 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-11-03 02:51:48,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:48,758 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:48,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:48,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1740312499, now seen corresponding path program 1 times [2022-11-03 02:51:48,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:48,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1117044338] [2022-11-03 02:51:48,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:48,760 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:48,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:48,761 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:48,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-11-03 02:51:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:49,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:49,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:49,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:49,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:49,500 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:49,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1117044338] [2022-11-03 02:51:49,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1117044338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:49,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:49,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874494681] [2022-11-03 02:51:49,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:49,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:49,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:49,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:49,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:49,503 INFO L87 Difference]: Start difference. First operand 353 states and 478 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:49,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:49,822 INFO L93 Difference]: Finished difference Result 1043 states and 1448 transitions. [2022-11-03 02:51:49,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:51:49,822 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:49,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:49,825 INFO L225 Difference]: With dead ends: 1043 [2022-11-03 02:51:49,826 INFO L226 Difference]: Without dead ends: 766 [2022-11-03 02:51:49,826 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:51:49,826 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1816 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:49,827 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1816 Valid, 1326 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:51:49,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-03 02:51:49,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 355. [2022-11-03 02:51:49,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 1.3559322033898304) internal successors, (480), 354 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:49,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 480 transitions. [2022-11-03 02:51:49,845 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 480 transitions. Word has length 115 [2022-11-03 02:51:49,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:49,845 INFO L495 AbstractCegarLoop]: Abstraction has 355 states and 480 transitions. [2022-11-03 02:51:49,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:49,845 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 480 transitions. [2022-11-03 02:51:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:49,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:49,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:49,863 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-11-03 02:51:50,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:50,063 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:50,064 INFO L85 PathProgramCache]: Analyzing trace with hash 505266955, now seen corresponding path program 1 times [2022-11-03 02:51:50,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:50,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [280342725] [2022-11-03 02:51:50,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:50,065 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:50,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:50,067 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:50,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 02:51:50,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:50,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-03 02:51:50,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:50,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:50,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:50,866 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:50,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [280342725] [2022-11-03 02:51:50,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [280342725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:50,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:50,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:51:50,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216693348] [2022-11-03 02:51:50,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:50,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:51:50,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:50,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:51:50,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:51:50,868 INFO L87 Difference]: Start difference. First operand 355 states and 480 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:51,159 INFO L93 Difference]: Finished difference Result 1047 states and 1451 transitions. [2022-11-03 02:51:51,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:51:51,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:51,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:51,165 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 02:51:51,165 INFO L226 Difference]: Without dead ends: 768 [2022-11-03 02:51:51,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:51:51,166 INFO L413 NwaCegarLoop]: 394 mSDtfsCounter, 1810 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:51,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1328 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:51:51,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-11-03 02:51:51,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 357. [2022-11-03 02:51:51,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.353932584269663) internal successors, (482), 356 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:51,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 482 transitions. [2022-11-03 02:51:51,179 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 482 transitions. Word has length 115 [2022-11-03 02:51:51,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:51,179 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 482 transitions. [2022-11-03 02:51:51,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:51,180 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 482 transitions. [2022-11-03 02:51:51,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:51,180 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:51,181 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:51,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-11-03 02:51:51,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:51,398 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:51,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:51,398 INFO L85 PathProgramCache]: Analyzing trace with hash 753413449, now seen corresponding path program 1 times [2022-11-03 02:51:51,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:51,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121236104] [2022-11-03 02:51:51,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:51,399 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:51,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:51,400 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:51,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-03 02:51:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:51,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 02:51:51,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:52,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:52,505 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:52,505 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:52,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121236104] [2022-11-03 02:51:52,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121236104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:52,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:52,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:52,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762169351] [2022-11-03 02:51:52,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:52,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:52,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:52,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:52,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:52,507 INFO L87 Difference]: Start difference. First operand 357 states and 482 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:53,150 INFO L93 Difference]: Finished difference Result 1194 states and 1640 transitions. [2022-11-03 02:51:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:53,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:53,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:53,154 INFO L225 Difference]: With dead ends: 1194 [2022-11-03 02:51:53,154 INFO L226 Difference]: Without dead ends: 913 [2022-11-03 02:51:53,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:53,155 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 2307 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2307 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:53,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2307 Valid, 1836 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:51:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2022-11-03 02:51:53,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 359. [2022-11-03 02:51:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 358 states have (on average 1.3519553072625698) internal successors, (484), 358 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 484 transitions. [2022-11-03 02:51:53,171 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 484 transitions. Word has length 115 [2022-11-03 02:51:53,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:53,171 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 484 transitions. [2022-11-03 02:51:53,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:53,172 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 484 transitions. [2022-11-03 02:51:53,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:53,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:53,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:53,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:53,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:53,389 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:53,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:53,389 INFO L85 PathProgramCache]: Analyzing trace with hash -618393849, now seen corresponding path program 1 times [2022-11-03 02:51:53,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:53,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2029306296] [2022-11-03 02:51:53,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:53,390 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:53,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:53,391 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:53,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-11-03 02:51:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:53,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 02:51:53,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:55,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:55,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:55,172 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:55,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2029306296] [2022-11-03 02:51:55,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2029306296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:55,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:55,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:55,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378301919] [2022-11-03 02:51:55,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:55,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:55,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:55,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:55,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:55,174 INFO L87 Difference]: Start difference. First operand 359 states and 484 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:55,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:55,947 INFO L93 Difference]: Finished difference Result 1186 states and 1628 transitions. [2022-11-03 02:51:55,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:55,948 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:55,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:55,954 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 02:51:55,954 INFO L226 Difference]: Without dead ends: 903 [2022-11-03 02:51:55,955 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:55,956 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 2276 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2276 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:55,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2276 Valid, 1860 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:51:55,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 903 states. [2022-11-03 02:51:55,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 903 to 361. [2022-11-03 02:51:55,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 360 states have (on average 1.35) internal successors, (486), 360 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:55,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 486 transitions. [2022-11-03 02:51:55,974 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 486 transitions. Word has length 115 [2022-11-03 02:51:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:55,974 INFO L495 AbstractCegarLoop]: Abstraction has 361 states and 486 transitions. [2022-11-03 02:51:55,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:55,975 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 486 transitions. [2022-11-03 02:51:55,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:55,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:55,976 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:55,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:56,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:56,192 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:56,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:56,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1647753147, now seen corresponding path program 1 times [2022-11-03 02:51:56,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:56,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [663637447] [2022-11-03 02:51:56,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:56,194 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:56,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:56,195 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:56,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 02:51:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:51:56,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 68 conjunts are in the unsatisfiable core [2022-11-03 02:51:56,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:51:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:51:58,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:51:58,791 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:51:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [663637447] [2022-11-03 02:51:58,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [663637447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:51:58,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:51:58,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:51:58,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265847141] [2022-11-03 02:51:58,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:51:58,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:51:58,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:51:58,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:51:58,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:51:58,794 INFO L87 Difference]: Start difference. First operand 361 states and 486 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:59,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:51:59,715 INFO L93 Difference]: Finished difference Result 1162 states and 1595 transitions. [2022-11-03 02:51:59,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:51:59,716 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:51:59,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:51:59,719 INFO L225 Difference]: With dead ends: 1162 [2022-11-03 02:51:59,719 INFO L226 Difference]: Without dead ends: 877 [2022-11-03 02:51:59,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:51:59,720 INFO L413 NwaCegarLoop]: 390 mSDtfsCounter, 2212 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:51:59,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2212 Valid, 1863 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:51:59,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2022-11-03 02:51:59,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 363. [2022-11-03 02:51:59,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 362 states have (on average 1.3480662983425415) internal successors, (488), 362 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 488 transitions. [2022-11-03 02:51:59,738 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 488 transitions. Word has length 115 [2022-11-03 02:51:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:51:59,738 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 488 transitions. [2022-11-03 02:51:59,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:51:59,738 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 488 transitions. [2022-11-03 02:51:59,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:51:59,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:51:59,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:51:59,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-11-03 02:51:59,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:51:59,954 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:51:59,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:51:59,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2042119933, now seen corresponding path program 1 times [2022-11-03 02:51:59,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:51:59,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [384929767] [2022-11-03 02:51:59,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:51:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:51:59,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:51:59,956 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:51:59,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-03 02:52:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:00,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:52:00,431 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:00,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:00,879 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:00,879 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:00,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [384929767] [2022-11-03 02:52:00,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [384929767] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:00,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:00,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:52:00,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276036095] [2022-11-03 02:52:00,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:00,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:52:00,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:00,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:52:00,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:52:00,881 INFO L87 Difference]: Start difference. First operand 363 states and 488 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:01,151 INFO L93 Difference]: Finished difference Result 968 states and 1310 transitions. [2022-11-03 02:52:01,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:52:01,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:01,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:01,155 INFO L225 Difference]: With dead ends: 968 [2022-11-03 02:52:01,155 INFO L226 Difference]: Without dead ends: 681 [2022-11-03 02:52:01,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:52:01,157 INFO L413 NwaCegarLoop]: 414 mSDtfsCounter, 525 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 15 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:01,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [525 Valid, 1873 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 15 Unchecked, 0.2s Time] [2022-11-03 02:52:01,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-11-03 02:52:01,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 395. [2022-11-03 02:52:01,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 394 states have (on average 1.3223350253807107) internal successors, (521), 394 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 521 transitions. [2022-11-03 02:52:01,174 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 521 transitions. Word has length 115 [2022-11-03 02:52:01,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:01,174 INFO L495 AbstractCegarLoop]: Abstraction has 395 states and 521 transitions. [2022-11-03 02:52:01,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:01,174 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 521 transitions. [2022-11-03 02:52:01,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:01,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:01,175 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:01,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:01,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:01,386 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:01,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:01,386 INFO L85 PathProgramCache]: Analyzing trace with hash 201863365, now seen corresponding path program 1 times [2022-11-03 02:52:01,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:01,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1748023159] [2022-11-03 02:52:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:01,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:01,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:01,388 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:01,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 02:52:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:01,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:52:01,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:02,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:02,203 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:02,204 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:02,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1748023159] [2022-11-03 02:52:02,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1748023159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:02,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:02,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:52:02,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571292194] [2022-11-03 02:52:02,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:02,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:52:02,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:02,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:52:02,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:52:02,206 INFO L87 Difference]: Start difference. First operand 395 states and 521 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:02,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:02,621 INFO L93 Difference]: Finished difference Result 1316 states and 1794 transitions. [2022-11-03 02:52:02,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:52:02,621 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:02,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:02,624 INFO L225 Difference]: With dead ends: 1316 [2022-11-03 02:52:02,625 INFO L226 Difference]: Without dead ends: 1029 [2022-11-03 02:52:02,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:52:02,626 INFO L413 NwaCegarLoop]: 402 mSDtfsCounter, 1892 mSDsluCounter, 1203 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 1605 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:02,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 1605 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:52:02,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2022-11-03 02:52:02,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 397. [2022-11-03 02:52:02,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 396 states have (on average 1.3207070707070707) internal successors, (523), 396 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:02,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 523 transitions. [2022-11-03 02:52:02,641 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 523 transitions. Word has length 115 [2022-11-03 02:52:02,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:02,641 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 523 transitions. [2022-11-03 02:52:02,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:02,642 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 523 transitions. [2022-11-03 02:52:02,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:02,642 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:02,643 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:02,656 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-11-03 02:52:02,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:02,849 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:02,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:02,849 INFO L85 PathProgramCache]: Analyzing trace with hash 224495619, now seen corresponding path program 1 times [2022-11-03 02:52:02,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:02,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1845121487] [2022-11-03 02:52:02,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:02,850 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:02,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:02,851 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:02,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-03 02:52:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:03,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-03 02:52:03,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:04,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:04,313 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:04,313 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:04,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1845121487] [2022-11-03 02:52:04,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1845121487] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:04,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:04,314 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:52:04,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109315833] [2022-11-03 02:52:04,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:04,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:52:04,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:04,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:52:04,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:52:04,315 INFO L87 Difference]: Start difference. First operand 397 states and 523 transitions. Second operand has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:04,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:04,788 INFO L93 Difference]: Finished difference Result 1320 states and 1797 transitions. [2022-11-03 02:52:04,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:52:04,788 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:04,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:04,791 INFO L225 Difference]: With dead ends: 1320 [2022-11-03 02:52:04,792 INFO L226 Difference]: Without dead ends: 1031 [2022-11-03 02:52:04,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:52:04,793 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1886 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:04,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 1576 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:52:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2022-11-03 02:52:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 399. [2022-11-03 02:52:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 398 states have (on average 1.3190954773869348) internal successors, (525), 398 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:04,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 525 transitions. [2022-11-03 02:52:04,813 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 525 transitions. Word has length 115 [2022-11-03 02:52:04,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:04,813 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 525 transitions. [2022-11-03 02:52:04,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.166666666666668) internal successors, (115), 6 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:04,813 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 525 transitions. [2022-11-03 02:52:04,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:04,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:04,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:04,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:05,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:05,036 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:05,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:05,037 INFO L85 PathProgramCache]: Analyzing trace with hash -284977471, now seen corresponding path program 1 times [2022-11-03 02:52:05,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:05,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [809763817] [2022-11-03 02:52:05,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:05,038 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:05,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:05,038 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:05,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 02:52:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:05,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:52:05,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:05,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:05,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:05,648 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:05,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [809763817] [2022-11-03 02:52:05,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [809763817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:05,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:05,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:05,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228580813] [2022-11-03 02:52:05,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:05,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:05,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:05,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:05,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:05,650 INFO L87 Difference]: Start difference. First operand 399 states and 525 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:05,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:05,730 INFO L93 Difference]: Finished difference Result 1167 states and 1597 transitions. [2022-11-03 02:52:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:05,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:05,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:05,733 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:52:05,733 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:52:05,734 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:05,735 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 684 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:05,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [684 Valid, 1190 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:05,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:52:05,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 471. [2022-11-03 02:52:05,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 471 states, 470 states have (on average 1.3404255319148937) internal successors, (630), 470 states have internal predecessors, (630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:05,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 630 transitions. [2022-11-03 02:52:05,749 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 630 transitions. Word has length 115 [2022-11-03 02:52:05,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:05,750 INFO L495 AbstractCegarLoop]: Abstraction has 471 states and 630 transitions. [2022-11-03 02:52:05,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:05,750 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 630 transitions. [2022-11-03 02:52:05,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:05,751 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:05,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:05,766 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-11-03 02:52:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:05,963 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:05,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash -222937857, now seen corresponding path program 1 times [2022-11-03 02:52:05,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:05,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238473577] [2022-11-03 02:52:05,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:05,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:05,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:05,965 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:05,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-11-03 02:52:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:06,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:52:06,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:06,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:06,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:06,583 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:06,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238473577] [2022-11-03 02:52:06,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238473577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:06,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:06,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:06,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530288153] [2022-11-03 02:52:06,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:06,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:06,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:06,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:06,586 INFO L87 Difference]: Start difference. First operand 471 states and 630 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:06,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:06,676 INFO L93 Difference]: Finished difference Result 1167 states and 1596 transitions. [2022-11-03 02:52:06,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:06,677 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:06,678 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:52:06,678 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:52:06,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:06,679 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 678 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 678 SdHoareTripleChecker+Valid, 1189 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:06,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [678 Valid, 1189 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:06,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:52:06,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 473. [2022-11-03 02:52:06,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 472 states have (on average 1.3389830508474576) internal successors, (632), 472 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:06,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 632 transitions. [2022-11-03 02:52:06,699 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 632 transitions. Word has length 115 [2022-11-03 02:52:06,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:06,700 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 632 transitions. [2022-11-03 02:52:06,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:06,700 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 632 transitions. [2022-11-03 02:52:06,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:06,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:06,701 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:06,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:06,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:06,918 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:06,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:06,918 INFO L85 PathProgramCache]: Analyzing trace with hash -356951363, now seen corresponding path program 1 times [2022-11-03 02:52:06,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:06,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959249526] [2022-11-03 02:52:06,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:06,920 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:06,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:06,920 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:06,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 02:52:07,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:07,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:52:07,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:07,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:07,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:07,539 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:07,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959249526] [2022-11-03 02:52:07,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959249526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:07,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:07,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:07,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848915809] [2022-11-03 02:52:07,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:07,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:07,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:07,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:07,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:07,541 INFO L87 Difference]: Start difference. First operand 473 states and 632 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:07,623 INFO L93 Difference]: Finished difference Result 1167 states and 1595 transitions. [2022-11-03 02:52:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:07,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:07,625 INFO L225 Difference]: With dead ends: 1167 [2022-11-03 02:52:07,625 INFO L226 Difference]: Without dead ends: 876 [2022-11-03 02:52:07,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:07,627 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 657 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:07,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1188 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2022-11-03 02:52:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 481. [2022-11-03 02:52:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.3395833333333333) internal successors, (643), 480 states have internal predecessors, (643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 643 transitions. [2022-11-03 02:52:07,649 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 643 transitions. Word has length 115 [2022-11-03 02:52:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:07,649 INFO L495 AbstractCegarLoop]: Abstraction has 481 states and 643 transitions. [2022-11-03 02:52:07,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:07,650 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 643 transitions. [2022-11-03 02:52:07,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:07,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:07,651 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:07,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:07,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:07,863 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:07,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:07,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1378019717, now seen corresponding path program 1 times [2022-11-03 02:52:07,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:07,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1769153145] [2022-11-03 02:52:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:07,866 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:07,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:07,867 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:07,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-03 02:52:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:08,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:52:08,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:08,543 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:08,543 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:08,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1769153145] [2022-11-03 02:52:08,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1769153145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:08,544 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:08,544 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:52:08,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241121969] [2022-11-03 02:52:08,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:08,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:52:08,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:08,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:52:08,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:52:08,548 INFO L87 Difference]: Start difference. First operand 481 states and 643 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:08,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:08,873 INFO L93 Difference]: Finished difference Result 1348 states and 1829 transitions. [2022-11-03 02:52:08,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:52:08,873 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:08,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:08,875 INFO L225 Difference]: With dead ends: 1348 [2022-11-03 02:52:08,875 INFO L226 Difference]: Without dead ends: 1057 [2022-11-03 02:52:08,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:52:08,876 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1207 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 1894 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 29 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:08,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 1894 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 29 Unchecked, 0.3s Time] [2022-11-03 02:52:08,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2022-11-03 02:52:08,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 489. [2022-11-03 02:52:08,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 488 states have (on average 1.3381147540983607) internal successors, (653), 488 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:08,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 653 transitions. [2022-11-03 02:52:08,896 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 653 transitions. Word has length 115 [2022-11-03 02:52:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:08,897 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 653 transitions. [2022-11-03 02:52:08,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:08,897 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 653 transitions. [2022-11-03 02:52:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:08,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:08,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:08,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-11-03 02:52:09,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:09,110 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:09,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:09,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1119854279, now seen corresponding path program 1 times [2022-11-03 02:52:09,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:09,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [102074984] [2022-11-03 02:52:09,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:09,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:09,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:09,113 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:09,114 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 02:52:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:09,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:52:09,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:09,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:09,763 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:09,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [102074984] [2022-11-03 02:52:09,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [102074984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:09,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:09,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:09,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890736462] [2022-11-03 02:52:09,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:09,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:09,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:09,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:09,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:09,766 INFO L87 Difference]: Start difference. First operand 489 states and 653 transitions. Second operand has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:09,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:09,859 INFO L93 Difference]: Finished difference Result 1175 states and 1604 transitions. [2022-11-03 02:52:09,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:09,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:09,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:09,862 INFO L225 Difference]: With dead ends: 1175 [2022-11-03 02:52:09,862 INFO L226 Difference]: Without dead ends: 884 [2022-11-03 02:52:09,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:09,864 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 641 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1187 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:09,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1187 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:09,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2022-11-03 02:52:09,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 495. [2022-11-03 02:52:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 1.3380566801619433) internal successors, (661), 494 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:09,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 661 transitions. [2022-11-03 02:52:09,883 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 661 transitions. Word has length 115 [2022-11-03 02:52:09,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:09,883 INFO L495 AbstractCegarLoop]: Abstraction has 495 states and 661 transitions. [2022-11-03 02:52:09,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.75) internal successors, (115), 4 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:09,884 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 661 transitions. [2022-11-03 02:52:09,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:09,884 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:09,884 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:09,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:10,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:10,085 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:10,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:10,085 INFO L85 PathProgramCache]: Analyzing trace with hash -1512881289, now seen corresponding path program 1 times [2022-11-03 02:52:10,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:10,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [356818999] [2022-11-03 02:52:10,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:10,086 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:10,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:10,087 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:10,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-11-03 02:52:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:10,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:52:10,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:10,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:10,778 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:10,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [356818999] [2022-11-03 02:52:10,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [356818999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:10,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:10,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:52:10,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798239815] [2022-11-03 02:52:10,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:10,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:52:10,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:10,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:52:10,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:52:10,780 INFO L87 Difference]: Start difference. First operand 495 states and 661 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:11,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:11,049 INFO L93 Difference]: Finished difference Result 1354 states and 1835 transitions. [2022-11-03 02:52:11,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:52:11,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:11,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:11,051 INFO L225 Difference]: With dead ends: 1354 [2022-11-03 02:52:11,052 INFO L226 Difference]: Without dead ends: 1063 [2022-11-03 02:52:11,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:52:11,053 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1188 mSDsluCounter, 1603 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1188 SdHoareTripleChecker+Valid, 2046 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:11,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1188 Valid, 2046 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 52 Unchecked, 0.2s Time] [2022-11-03 02:52:11,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2022-11-03 02:52:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 501. [2022-11-03 02:52:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 501 states, 500 states have (on average 1.336) internal successors, (668), 500 states have internal predecessors, (668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:11,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 668 transitions. [2022-11-03 02:52:11,073 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 668 transitions. Word has length 115 [2022-11-03 02:52:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:11,074 INFO L495 AbstractCegarLoop]: Abstraction has 501 states and 668 transitions. [2022-11-03 02:52:11,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:11,074 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 668 transitions. [2022-11-03 02:52:11,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:52:11,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:11,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:11,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:11,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:11,282 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:11,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:11,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1455622987, now seen corresponding path program 1 times [2022-11-03 02:52:11,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:11,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [592976962] [2022-11-03 02:52:11,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:11,284 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:11,284 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:11,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 02:52:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:11,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:52:11,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:12,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:12,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:12,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:12,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [592976962] [2022-11-03 02:52:12,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [592976962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:12,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:12,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:52:12,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020668514] [2022-11-03 02:52:12,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:12,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:52:12,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:12,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:52:12,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:12,187 INFO L87 Difference]: Start difference. First operand 501 states and 668 transitions. Second operand has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:12,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:12,575 INFO L93 Difference]: Finished difference Result 799 states and 1077 transitions. [2022-11-03 02:52:12,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:52:12,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 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 115 [2022-11-03 02:52:12,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:12,578 INFO L225 Difference]: With dead ends: 799 [2022-11-03 02:52:12,578 INFO L226 Difference]: Without dead ends: 797 [2022-11-03 02:52:12,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 111 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 02:52:12,579 INFO L413 NwaCegarLoop]: 447 mSDtfsCounter, 779 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:12,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 1309 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 02:52:12,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-11-03 02:52:12,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 509. [2022-11-03 02:52:12,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 508 states have (on average 1.3366141732283465) internal successors, (679), 508 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 679 transitions. [2022-11-03 02:52:12,598 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 679 transitions. Word has length 115 [2022-11-03 02:52:12,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:12,598 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 679 transitions. [2022-11-03 02:52:12,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.0) internal successors, (115), 5 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:12,599 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 679 transitions. [2022-11-03 02:52:12,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:52:12,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:12,601 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:12,618 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:12,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:12,818 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:12,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:12,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1182511353, now seen corresponding path program 1 times [2022-11-03 02:52:12,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:12,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1532828835] [2022-11-03 02:52:12,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:12,821 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:12,821 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:12,822 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:12,838 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-03 02:52:13,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:13,726 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:52:13,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:13,886 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:13,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:13,886 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:13,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1532828835] [2022-11-03 02:52:13,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1532828835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:13,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:13,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:52:13,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598507172] [2022-11-03 02:52:13,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:13,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:52:13,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:13,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:52:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:52:13,888 INFO L87 Difference]: Start difference. First operand 509 states and 679 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:13,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:13,979 INFO L93 Difference]: Finished difference Result 1179 states and 1608 transitions. [2022-11-03 02:52:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:52:13,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:52:13,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:13,982 INFO L225 Difference]: With dead ends: 1179 [2022-11-03 02:52:13,982 INFO L226 Difference]: Without dead ends: 888 [2022-11-03 02:52:13,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:52:13,983 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 612 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 612 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:13,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [612 Valid, 1184 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:52:13,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-11-03 02:52:14,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 511. [2022-11-03 02:52:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 510 states have (on average 1.3352941176470587) internal successors, (681), 510 states have internal predecessors, (681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:14,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 681 transitions. [2022-11-03 02:52:14,004 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 681 transitions. Word has length 316 [2022-11-03 02:52:14,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:14,005 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 681 transitions. [2022-11-03 02:52:14,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 681 transitions. [2022-11-03 02:52:14,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:52:14,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:14,007 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:14,034 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:14,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:14,226 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:14,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:14,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1144651017, now seen corresponding path program 1 times [2022-11-03 02:52:14,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:14,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1505169710] [2022-11-03 02:52:14,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:14,229 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:14,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:14,231 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:14,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 02:52:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:15,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:52:15,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:15,371 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:15,372 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:15,372 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:15,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1505169710] [2022-11-03 02:52:15,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1505169710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:15,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:15,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:52:15,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829759551] [2022-11-03 02:52:15,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:15,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:52:15,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:15,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:52:15,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:52:15,374 INFO L87 Difference]: Start difference. First operand 511 states and 681 transitions. Second operand has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:15,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:15,622 INFO L93 Difference]: Finished difference Result 840 states and 1129 transitions. [2022-11-03 02:52:15,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:52:15,622 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:52:15,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:15,624 INFO L225 Difference]: With dead ends: 840 [2022-11-03 02:52:15,624 INFO L226 Difference]: Without dead ends: 549 [2022-11-03 02:52:15,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:52:15,625 INFO L413 NwaCegarLoop]: 288 mSDtfsCounter, 79 mSDsluCounter, 880 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:15,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1168 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 34 Unchecked, 0.2s Time] [2022-11-03 02:52:15,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-11-03 02:52:15,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 549. [2022-11-03 02:52:15,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 1.3302919708029197) internal successors, (729), 548 states have internal predecessors, (729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:15,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 729 transitions. [2022-11-03 02:52:15,654 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 729 transitions. Word has length 316 [2022-11-03 02:52:15,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:15,657 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 729 transitions. [2022-11-03 02:52:15,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:15,657 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 729 transitions. [2022-11-03 02:52:15,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:52:15,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:15,660 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:15,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-11-03 02:52:15,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:15,882 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:15,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:15,882 INFO L85 PathProgramCache]: Analyzing trace with hash 860665479, now seen corresponding path program 1 times [2022-11-03 02:52:15,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:15,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1082560750] [2022-11-03 02:52:15,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:15,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:15,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:15,885 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:15,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-11-03 02:52:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:16,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:52:16,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:17,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:17,004 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:17,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1082560750] [2022-11-03 02:52:17,005 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1082560750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:17,005 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:17,005 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:52:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266034807] [2022-11-03 02:52:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:17,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:52:17,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:52:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:52:17,007 INFO L87 Difference]: Start difference. First operand 549 states and 729 transitions. Second operand has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:17,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:17,358 INFO L93 Difference]: Finished difference Result 1408 states and 1901 transitions. [2022-11-03 02:52:17,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:52:17,358 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:52:17,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:17,360 INFO L225 Difference]: With dead ends: 1408 [2022-11-03 02:52:17,360 INFO L226 Difference]: Without dead ends: 1117 [2022-11-03 02:52:17,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:52:17,361 INFO L413 NwaCegarLoop]: 456 mSDtfsCounter, 1154 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1154 SdHoareTripleChecker+Valid, 1918 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:17,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1154 Valid, 1918 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 59 Invalid, 0 Unknown, 28 Unchecked, 0.3s Time] [2022-11-03 02:52:17,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1117 states. [2022-11-03 02:52:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1117 to 567. [2022-11-03 02:52:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 566 states have (on average 1.325088339222615) internal successors, (750), 566 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:17,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 750 transitions. [2022-11-03 02:52:17,383 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 750 transitions. Word has length 316 [2022-11-03 02:52:17,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:17,384 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 750 transitions. [2022-11-03 02:52:17,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:17,384 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 750 transitions. [2022-11-03 02:52:17,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:52:17,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:17,387 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:17,413 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-11-03 02:52:17,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:17,606 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:17,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:17,607 INFO L85 PathProgramCache]: Analyzing trace with hash -864176759, now seen corresponding path program 1 times [2022-11-03 02:52:17,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:17,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183440107] [2022-11-03 02:52:17,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:17,609 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:17,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:17,610 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:17,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 02:52:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:18,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-03 02:52:18,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:19,428 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:19,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:19,428 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:19,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183440107] [2022-11-03 02:52:19,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183440107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:19,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:19,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:52:19,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045356695] [2022-11-03 02:52:19,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:19,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:52:19,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:19,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:52:19,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:52:19,431 INFO L87 Difference]: Start difference. First operand 567 states and 750 transitions. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:20,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:20,056 INFO L93 Difference]: Finished difference Result 1399 states and 1892 transitions. [2022-11-03 02:52:20,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:52:20,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:52:20,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:20,058 INFO L225 Difference]: With dead ends: 1399 [2022-11-03 02:52:20,058 INFO L226 Difference]: Without dead ends: 1108 [2022-11-03 02:52:20,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:52:20,061 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1403 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1403 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:20,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1403 Valid, 1500 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:52:20,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1108 states. [2022-11-03 02:52:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1108 to 699. [2022-11-03 02:52:20,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 698 states have (on average 1.320916905444126) internal successors, (922), 698 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:20,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 922 transitions. [2022-11-03 02:52:20,084 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 922 transitions. Word has length 316 [2022-11-03 02:52:20,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:20,085 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 922 transitions. [2022-11-03 02:52:20,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 922 transitions. [2022-11-03 02:52:20,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:52:20,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:20,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:20,118 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-03 02:52:20,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:20,310 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:20,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:20,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1149668619, now seen corresponding path program 1 times [2022-11-03 02:52:20,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:20,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780404853] [2022-11-03 02:52:20,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:20,313 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:20,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:20,314 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:20,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-11-03 02:52:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:21,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 224 conjunts are in the unsatisfiable core [2022-11-03 02:52:21,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:52:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:52:39,091 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:52:39,091 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:52:39,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780404853] [2022-11-03 02:52:39,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780404853] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:39,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:52:39,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:52:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617725215] [2022-11-03 02:52:39,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:39,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:52:39,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:52:39,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:52:39,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:52:39,094 INFO L87 Difference]: Start difference. First operand 699 states and 922 transitions. Second operand has 14 states, 14 states have (on average 22.571428571428573) internal successors, (316), 14 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:41,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:52:41,686 INFO L93 Difference]: Finished difference Result 2276 states and 3049 transitions. [2022-11-03 02:52:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:52:41,689 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.571428571428573) internal successors, (316), 14 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:52:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:52:41,695 INFO L225 Difference]: With dead ends: 2276 [2022-11-03 02:52:41,696 INFO L226 Difference]: Without dead ends: 1951 [2022-11-03 02:52:41,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-03 02:52:41,698 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 2902 mSDsluCounter, 5027 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:52:41,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 5433 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 243 Invalid, 0 Unknown, 187 Unchecked, 0.8s Time] [2022-11-03 02:52:41,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2022-11-03 02:52:41,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 875. [2022-11-03 02:52:41,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 874 states have (on average 1.294050343249428) internal successors, (1131), 874 states have internal predecessors, (1131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:41,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1131 transitions. [2022-11-03 02:52:41,743 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1131 transitions. Word has length 316 [2022-11-03 02:52:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:52:41,744 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1131 transitions. [2022-11-03 02:52:41,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.571428571428573) internal successors, (316), 14 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:52:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1131 transitions. [2022-11-03 02:52:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:52:41,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:52:41,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:52:41,770 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-11-03 02:52:41,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:52:41,958 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:52:41,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:52:41,959 INFO L85 PathProgramCache]: Analyzing trace with hash -635734643, now seen corresponding path program 1 times [2022-11-03 02:52:41,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:52:41,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058036919] [2022-11-03 02:52:41,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:52:41,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:52:41,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:52:41,963 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:52:41,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 02:52:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:52:42,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 237 conjunts are in the unsatisfiable core [2022-11-03 02:52:42,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:02,805 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:02,805 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:02,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058036919] [2022-11-03 02:53:02,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058036919] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:02,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:02,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-03 02:53:02,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433981337] [2022-11-03 02:53:02,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:02,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:53:02,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:02,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:53:02,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:53:02,807 INFO L87 Difference]: Start difference. First operand 875 states and 1131 transitions. Second operand has 14 states, 14 states have (on average 22.571428571428573) internal successors, (316), 14 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:06,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:06,525 INFO L93 Difference]: Finished difference Result 2838 states and 3803 transitions. [2022-11-03 02:53:06,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 02:53:06,525 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 22.571428571428573) internal successors, (316), 14 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:06,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:06,529 INFO L225 Difference]: With dead ends: 2838 [2022-11-03 02:53:06,529 INFO L226 Difference]: Without dead ends: 2513 [2022-11-03 02:53:06,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 303 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2022-11-03 02:53:06,531 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 4112 mSDsluCounter, 5535 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 5992 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 86 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:06,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 5992 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 420 Invalid, 0 Unknown, 86 Unchecked, 1.2s Time] [2022-11-03 02:53:06,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2513 states. [2022-11-03 02:53:06,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2513 to 877. [2022-11-03 02:53:06,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.29337899543379) internal successors, (1133), 876 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:06,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1133 transitions. [2022-11-03 02:53:06,566 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1133 transitions. Word has length 316 [2022-11-03 02:53:06,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:06,566 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1133 transitions. [2022-11-03 02:53:06,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 22.571428571428573) internal successors, (316), 14 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1133 transitions. [2022-11-03 02:53:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:06,569 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:06,570 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:06,600 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:06,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:06,795 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:06,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:06,795 INFO L85 PathProgramCache]: Analyzing trace with hash -512452977, now seen corresponding path program 1 times [2022-11-03 02:53:06,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:06,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1425538741] [2022-11-03 02:53:06,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:06,798 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:06,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:06,799 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:06,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-11-03 02:53:07,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:07,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:53:07,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:07,870 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:07,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:07,871 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:07,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1425538741] [2022-11-03 02:53:07,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1425538741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:07,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:07,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:53:07,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473268132] [2022-11-03 02:53:07,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:07,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:07,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:07,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:07,873 INFO L87 Difference]: Start difference. First operand 877 states and 1133 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:08,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:08,074 INFO L93 Difference]: Finished difference Result 1231 states and 1624 transitions. [2022-11-03 02:53:08,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:53:08,074 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:08,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:08,076 INFO L225 Difference]: With dead ends: 1231 [2022-11-03 02:53:08,076 INFO L226 Difference]: Without dead ends: 906 [2022-11-03 02:53:08,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:53:08,077 INFO L413 NwaCegarLoop]: 457 mSDtfsCounter, 465 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:08,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 639 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:53:08,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-11-03 02:53:08,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 877. [2022-11-03 02:53:08,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.2922374429223744) internal successors, (1132), 876 states have internal predecessors, (1132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:08,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1132 transitions. [2022-11-03 02:53:08,102 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1132 transitions. Word has length 316 [2022-11-03 02:53:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:08,102 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1132 transitions. [2022-11-03 02:53:08,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:08,103 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1132 transitions. [2022-11-03 02:53:08,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:08,105 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:08,106 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:08,134 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-11-03 02:53:08,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:08,330 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:08,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:08,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1086696081, now seen corresponding path program 1 times [2022-11-03 02:53:08,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:08,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [745115480] [2022-11-03 02:53:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:08,334 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:08,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:08,334 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:08,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 02:53:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:09,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:53:09,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:09,639 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:09,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:09,640 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:09,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [745115480] [2022-11-03 02:53:09,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [745115480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:09,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:09,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:53:09,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727708217] [2022-11-03 02:53:09,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:09,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:53:09,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:09,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:53:09,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:53:09,643 INFO L87 Difference]: Start difference. First operand 877 states and 1132 transitions. Second operand has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:10,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:10,045 INFO L93 Difference]: Finished difference Result 1799 states and 2394 transitions. [2022-11-03 02:53:10,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:53:10,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:10,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:10,048 INFO L225 Difference]: With dead ends: 1799 [2022-11-03 02:53:10,049 INFO L226 Difference]: Without dead ends: 1474 [2022-11-03 02:53:10,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:53:10,050 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 849 mSDsluCounter, 2258 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2748 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:10,051 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2748 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 76 Invalid, 0 Unknown, 30 Unchecked, 0.3s Time] [2022-11-03 02:53:10,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2022-11-03 02:53:10,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 911. [2022-11-03 02:53:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 910 states have (on average 1.2934065934065935) internal successors, (1177), 910 states have internal predecessors, (1177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1177 transitions. [2022-11-03 02:53:10,084 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1177 transitions. Word has length 316 [2022-11-03 02:53:10,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:10,084 INFO L495 AbstractCegarLoop]: Abstraction has 911 states and 1177 transitions. [2022-11-03 02:53:10,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:10,085 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1177 transitions. [2022-11-03 02:53:10,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:10,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:10,089 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:10,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:10,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:10,303 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:10,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:10,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1614090131, now seen corresponding path program 1 times [2022-11-03 02:53:10,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:10,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518684877] [2022-11-03 02:53:10,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:10,307 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:10,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:10,311 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:10,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-11-03 02:53:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:11,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:53:11,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:11,689 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:11,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:11,689 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:11,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518684877] [2022-11-03 02:53:11,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518684877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:11,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:11,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:53:11,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258284309] [2022-11-03 02:53:11,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:11,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:53:11,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:11,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:53:11,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:53:11,691 INFO L87 Difference]: Start difference. First operand 911 states and 1177 transitions. Second operand has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:11,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:11,771 INFO L93 Difference]: Finished difference Result 1286 states and 1696 transitions. [2022-11-03 02:53:11,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:53:11,772 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:11,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:11,774 INFO L225 Difference]: With dead ends: 1286 [2022-11-03 02:53:11,774 INFO L226 Difference]: Without dead ends: 961 [2022-11-03 02:53:11,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:53:11,775 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 88 mSDsluCounter, 1450 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:11,775 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1746 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 31 Unchecked, 0.0s Time] [2022-11-03 02:53:11,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-11-03 02:53:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2022-11-03 02:53:11,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 960 states have (on average 1.2989583333333334) internal successors, (1247), 960 states have internal predecessors, (1247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1247 transitions. [2022-11-03 02:53:11,804 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1247 transitions. Word has length 316 [2022-11-03 02:53:11,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:11,804 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1247 transitions. [2022-11-03 02:53:11,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 45.142857142857146) internal successors, (316), 7 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1247 transitions. [2022-11-03 02:53:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:11,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:11,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:11,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:12,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:12,030 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:12,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1273151215, now seen corresponding path program 1 times [2022-11-03 02:53:12,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:12,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437804321] [2022-11-03 02:53:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:12,033 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:12,034 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:12,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 02:53:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:12,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:53:12,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:13,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:13,143 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:13,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437804321] [2022-11-03 02:53:13,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1437804321] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:13,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:13,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:53:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729536334] [2022-11-03 02:53:13,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:13,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:53:13,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:13,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:53:13,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:53:13,145 INFO L87 Difference]: Start difference. First operand 961 states and 1247 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:13,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:13,337 INFO L93 Difference]: Finished difference Result 1303 states and 1719 transitions. [2022-11-03 02:53:13,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:53:13,337 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:13,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:13,339 INFO L225 Difference]: With dead ends: 1303 [2022-11-03 02:53:13,339 INFO L226 Difference]: Without dead ends: 978 [2022-11-03 02:53:13,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:53:13,341 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 451 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:13,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [451 Valid, 666 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:53:13,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2022-11-03 02:53:13,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 961. [2022-11-03 02:53:13,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 960 states have (on average 1.2979166666666666) internal successors, (1246), 960 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:13,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1246 transitions. [2022-11-03 02:53:13,367 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1246 transitions. Word has length 316 [2022-11-03 02:53:13,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:13,368 INFO L495 AbstractCegarLoop]: Abstraction has 961 states and 1246 transitions. [2022-11-03 02:53:13,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1246 transitions. [2022-11-03 02:53:13,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:13,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:13,372 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:13,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:13,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:13,586 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:13,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1098565651, now seen corresponding path program 1 times [2022-11-03 02:53:13,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:13,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [743743329] [2022-11-03 02:53:13,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:13,589 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:13,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:13,590 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:13,632 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-11-03 02:53:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:14,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:53:14,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:18,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:18,650 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:18,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [743743329] [2022-11-03 02:53:18,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [743743329] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:18,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:18,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 02:53:18,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843246432] [2022-11-03 02:53:18,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:18,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:53:18,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:18,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:53:18,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:53:18,653 INFO L87 Difference]: Start difference. First operand 961 states and 1246 transitions. Second operand has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:19,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:19,196 INFO L93 Difference]: Finished difference Result 2026 states and 2665 transitions. [2022-11-03 02:53:19,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:53:19,197 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:19,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:19,200 INFO L225 Difference]: With dead ends: 2026 [2022-11-03 02:53:19,201 INFO L226 Difference]: Without dead ends: 1701 [2022-11-03 02:53:19,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:53:19,203 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 750 mSDsluCounter, 8303 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 8707 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1089 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:19,203 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 8707 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 1089 Unchecked, 0.4s Time] [2022-11-03 02:53:19,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1701 states. [2022-11-03 02:53:19,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1701 to 1233. [2022-11-03 02:53:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1233 states, 1232 states have (on average 1.291396103896104) internal successors, (1591), 1232 states have internal predecessors, (1591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1233 states to 1233 states and 1591 transitions. [2022-11-03 02:53:19,241 INFO L78 Accepts]: Start accepts. Automaton has 1233 states and 1591 transitions. Word has length 316 [2022-11-03 02:53:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:19,242 INFO L495 AbstractCegarLoop]: Abstraction has 1233 states and 1591 transitions. [2022-11-03 02:53:19,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1233 states and 1591 transitions. [2022-11-03 02:53:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:19,246 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:19,246 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:19,278 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-11-03 02:53:19,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:19,470 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:19,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:19,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1765947541, now seen corresponding path program 1 times [2022-11-03 02:53:19,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:19,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009166914] [2022-11-03 02:53:19,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:19,474 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:19,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:19,475 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:19,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 02:53:20,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:20,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 238 conjunts are in the unsatisfiable core [2022-11-03 02:53:20,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:46,440 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:46,441 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:46,441 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:46,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009166914] [2022-11-03 02:53:46,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009166914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:46,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:46,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 02:53:46,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594975785] [2022-11-03 02:53:46,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:46,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:53:46,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:46,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:53:46,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:53:46,448 INFO L87 Difference]: Start difference. First operand 1233 states and 1591 transitions. Second operand has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 28 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:46,932 INFO L93 Difference]: Finished difference Result 2245 states and 2969 transitions. [2022-11-03 02:53:46,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:53:46,934 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 28 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:46,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:46,937 INFO L225 Difference]: With dead ends: 2245 [2022-11-03 02:53:46,937 INFO L226 Difference]: Without dead ends: 1920 [2022-11-03 02:53:46,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:53:46,938 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 769 mSDsluCounter, 7613 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 7923 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 738 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:46,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [769 Valid, 7923 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 738 Unchecked, 0.2s Time] [2022-11-03 02:53:46,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1920 states. [2022-11-03 02:53:46,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1920 to 1431. [2022-11-03 02:53:46,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1431 states, 1430 states have (on average 1.293006993006993) internal successors, (1849), 1430 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:46,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1431 states to 1431 states and 1849 transitions. [2022-11-03 02:53:46,971 INFO L78 Accepts]: Start accepts. Automaton has 1431 states and 1849 transitions. Word has length 316 [2022-11-03 02:53:46,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:46,972 INFO L495 AbstractCegarLoop]: Abstraction has 1431 states and 1849 transitions. [2022-11-03 02:53:46,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 28 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:46,972 INFO L276 IsEmpty]: Start isEmpty. Operand 1431 states and 1849 transitions. [2022-11-03 02:53:46,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:46,976 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:46,976 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:47,006 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:47,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:47,190 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:47,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash 2110775703, now seen corresponding path program 1 times [2022-11-03 02:53:47,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:47,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1279357890] [2022-11-03 02:53:47,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:47,193 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:47,195 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:47,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-11-03 02:53:47,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:48,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:53:48,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:48,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:48,616 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:48,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1279357890] [2022-11-03 02:53:48,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1279357890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:48,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:48,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:53:48,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958485090] [2022-11-03 02:53:48,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:48,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:53:48,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:48,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:53:48,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:53:48,619 INFO L87 Difference]: Start difference. First operand 1431 states and 1849 transitions. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:49,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:49,166 INFO L93 Difference]: Finished difference Result 2120 states and 2798 transitions. [2022-11-03 02:53:49,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:53:49,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:49,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:49,170 INFO L225 Difference]: With dead ends: 2120 [2022-11-03 02:53:49,170 INFO L226 Difference]: Without dead ends: 1795 [2022-11-03 02:53:49,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:53:49,171 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 1074 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:49,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 1747 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:53:49,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1795 states. [2022-11-03 02:53:49,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1795 to 1433. [2022-11-03 02:53:49,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1432 states have (on average 1.2925977653631284) internal successors, (1851), 1432 states have internal predecessors, (1851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1851 transitions. [2022-11-03 02:53:49,204 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1851 transitions. Word has length 316 [2022-11-03 02:53:49,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:49,204 INFO L495 AbstractCegarLoop]: Abstraction has 1433 states and 1851 transitions. [2022-11-03 02:53:49,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1851 transitions. [2022-11-03 02:53:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:49,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:49,208 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:49,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (55)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:49,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:49,431 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:49,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:49,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1757637095, now seen corresponding path program 1 times [2022-11-03 02:53:49,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:49,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1116210828] [2022-11-03 02:53:49,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:49,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:49,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:49,435 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:49,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 02:53:50,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:50,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 61 conjunts are in the unsatisfiable core [2022-11-03 02:53:50,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:53:54,725 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:53:54,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:53:54,726 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:53:54,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1116210828] [2022-11-03 02:53:54,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1116210828] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:53:54,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:53:54,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-11-03 02:53:54,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454737205] [2022-11-03 02:53:54,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:53:54,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 02:53:54,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:53:54,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 02:53:54,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2022-11-03 02:53:54,728 INFO L87 Difference]: Start difference. First operand 1433 states and 1851 transitions. Second operand has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:55,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:53:55,173 INFO L93 Difference]: Finished difference Result 2210 states and 2898 transitions. [2022-11-03 02:53:55,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 02:53:55,174 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:53:55,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:53:55,176 INFO L225 Difference]: With dead ends: 2210 [2022-11-03 02:53:55,176 INFO L226 Difference]: Without dead ends: 1883 [2022-11-03 02:53:55,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 317 GetRequests, 293 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=55, Invalid=595, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:53:55,178 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 669 mSDsluCounter, 8209 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 8613 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 699 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:53:55,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 8613 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 699 Unchecked, 0.3s Time] [2022-11-03 02:53:55,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1883 states. [2022-11-03 02:53:55,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1883 to 1455. [2022-11-03 02:53:55,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1455 states, 1454 states have (on average 1.2943603851444292) internal successors, (1882), 1454 states have internal predecessors, (1882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:55,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1455 states to 1455 states and 1882 transitions. [2022-11-03 02:53:55,213 INFO L78 Accepts]: Start accepts. Automaton has 1455 states and 1882 transitions. Word has length 316 [2022-11-03 02:53:55,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:53:55,213 INFO L495 AbstractCegarLoop]: Abstraction has 1455 states and 1882 transitions. [2022-11-03 02:53:55,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 13.166666666666666) internal successors, (316), 24 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:53:55,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1455 states and 1882 transitions. [2022-11-03 02:53:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:53:55,217 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:53:55,217 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:53:55,246 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Forceful destruction successful, exit code 0 [2022-11-03 02:53:55,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:53:55,442 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:53:55,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:53:55,443 INFO L85 PathProgramCache]: Analyzing trace with hash 749460379, now seen corresponding path program 1 times [2022-11-03 02:53:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:53:55,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403906094] [2022-11-03 02:53:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:53:55,445 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:53:55,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:53:55,447 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:53:55,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-11-03 02:53:56,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:53:56,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 238 conjunts are in the unsatisfiable core [2022-11-03 02:53:56,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:21,771 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:54:21,771 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:21,771 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:21,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403906094] [2022-11-03 02:54:21,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403906094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:21,772 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:21,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2022-11-03 02:54:21,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853696274] [2022-11-03 02:54:21,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:21,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 02:54:21,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:21,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 02:54:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2022-11-03 02:54:21,774 INFO L87 Difference]: Start difference. First operand 1455 states and 1882 transitions. Second operand has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 28 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:22,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:22,071 INFO L93 Difference]: Finished difference Result 2235 states and 2945 transitions. [2022-11-03 02:54:22,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-03 02:54:22,071 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 28 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:54:22,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:22,073 INFO L225 Difference]: With dead ends: 2235 [2022-11-03 02:54:22,073 INFO L226 Difference]: Without dead ends: 1908 [2022-11-03 02:54:22,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=69, Invalid=861, Unknown=0, NotChecked=0, Total=930 [2022-11-03 02:54:22,074 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 645 mSDsluCounter, 7900 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 8210 SdHoareTripleChecker+Invalid, 864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 838 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:22,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 8210 Invalid, 864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 838 Unchecked, 0.0s Time] [2022-11-03 02:54:22,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1908 states. [2022-11-03 02:54:22,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1908 to 1477. [2022-11-03 02:54:22,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 1.2953929539295392) internal successors, (1912), 1476 states have internal predecessors, (1912), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:22,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1912 transitions. [2022-11-03 02:54:22,097 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1912 transitions. Word has length 316 [2022-11-03 02:54:22,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:22,097 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 1912 transitions. [2022-11-03 02:54:22,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 11.285714285714286) internal successors, (316), 28 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:22,098 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1912 transitions. [2022-11-03 02:54:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:54:22,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:22,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:22,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (57)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:22,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:22,314 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:22,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:22,314 INFO L85 PathProgramCache]: Analyzing trace with hash 819108253, now seen corresponding path program 1 times [2022-11-03 02:54:22,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:22,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105365989] [2022-11-03 02:54:22,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:22,316 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:22,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:22,317 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:22,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 02:54:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:23,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:54:23,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:23,405 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:54:23,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:23,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:23,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2105365989] [2022-11-03 02:54:23,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2105365989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:23,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:23,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:54:23,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178740162] [2022-11-03 02:54:23,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:23,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:54:23,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:23,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:54:23,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:54:23,408 INFO L87 Difference]: Start difference. First operand 1477 states and 1912 transitions. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:23,610 INFO L93 Difference]: Finished difference Result 1859 states and 2440 transitions. [2022-11-03 02:54:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:54:23,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:54:23,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:23,612 INFO L225 Difference]: With dead ends: 1859 [2022-11-03 02:54:23,613 INFO L226 Difference]: Without dead ends: 1532 [2022-11-03 02:54:23,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:54:23,614 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 413 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:23,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 767 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:54:23,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2022-11-03 02:54:23,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1477. [2022-11-03 02:54:23,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1476 states have (on average 1.2947154471544715) internal successors, (1911), 1476 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:23,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 1911 transitions. [2022-11-03 02:54:23,634 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 1911 transitions. Word has length 316 [2022-11-03 02:54:23,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:23,634 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 1911 transitions. [2022-11-03 02:54:23,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:23,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 1911 transitions. [2022-11-03 02:54:23,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:54:23,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:23,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:23,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:23,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:23,864 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:23,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:23,864 INFO L85 PathProgramCache]: Analyzing trace with hash -128943713, now seen corresponding path program 1 times [2022-11-03 02:54:23,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:23,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1411404407] [2022-11-03 02:54:23,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:23,867 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:23,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:23,868 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:23,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-11-03 02:54:24,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:24,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-03 02:54:24,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:54:29,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:29,523 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:29,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1411404407] [2022-11-03 02:54:29,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1411404407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:29,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:54:29,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-11-03 02:54:29,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618703388] [2022-11-03 02:54:29,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:29,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-03 02:54:29,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:29,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-03 02:54:29,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:54:29,525 INFO L87 Difference]: Start difference. First operand 1477 states and 1911 transitions. Second operand has 26 states, 26 states have (on average 12.153846153846153) internal successors, (316), 26 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:29,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:29,599 INFO L93 Difference]: Finished difference Result 1860 states and 2436 transitions. [2022-11-03 02:54:29,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-03 02:54:29,601 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 12.153846153846153) internal successors, (316), 26 states have internal predecessors, (316), 0 states have call successors, (0), 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 316 [2022-11-03 02:54:29,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:29,602 INFO L225 Difference]: With dead ends: 1860 [2022-11-03 02:54:29,603 INFO L226 Difference]: Without dead ends: 1533 [2022-11-03 02:54:29,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2022-11-03 02:54:29,604 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 251 mSDsluCounter, 5857 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 6129 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 323 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:29,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 6129 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 323 Unchecked, 0.0s Time] [2022-11-03 02:54:29,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-11-03 02:54:29,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1515. [2022-11-03 02:54:29,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1515 states, 1514 states have (on average 1.296565389696169) internal successors, (1963), 1514 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:29,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1515 states to 1515 states and 1963 transitions. [2022-11-03 02:54:29,633 INFO L78 Accepts]: Start accepts. Automaton has 1515 states and 1963 transitions. Word has length 316 [2022-11-03 02:54:29,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:29,633 INFO L495 AbstractCegarLoop]: Abstraction has 1515 states and 1963 transitions. [2022-11-03 02:54:29,634 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 12.153846153846153) internal successors, (316), 26 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:29,634 INFO L276 IsEmpty]: Start isEmpty. Operand 1515 states and 1963 transitions. [2022-11-03 02:54:29,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:54:29,637 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:29,638 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:29,660 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (59)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:29,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:29,850 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:29,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:29,851 INFO L85 PathProgramCache]: Analyzing trace with hash -835540319, now seen corresponding path program 1 times [2022-11-03 02:54:29,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:29,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [211766409] [2022-11-03 02:54:29,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:29,853 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:29,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:29,854 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:29,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 02:54:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:30,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:54:30,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:32,034 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:54:32,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:33,748 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:54:33,749 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:33,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [211766409] [2022-11-03 02:54:33,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [211766409] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:33,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1125887118] [2022-11-03 02:54:33,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:33,750 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:54:33,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:54:33,752 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:54:33,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-03 02:54:35,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:35,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:54:35,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:35,241 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:54:35,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:35,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1125887118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:35,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:54:35,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:54:35,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112267718] [2022-11-03 02:54:35,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:35,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:54:35,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:35,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:54:35,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:54:35,244 INFO L87 Difference]: Start difference. First operand 1515 states and 1963 transitions. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:35,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:35,366 INFO L93 Difference]: Finished difference Result 3048 states and 4040 transitions. [2022-11-03 02:54:35,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:54:35,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 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 316 [2022-11-03 02:54:35,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:35,369 INFO L225 Difference]: With dead ends: 3048 [2022-11-03 02:54:35,370 INFO L226 Difference]: Without dead ends: 2721 [2022-11-03 02:54:35,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:54:35,371 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1445 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:35,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 1720 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:54:35,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2721 states. [2022-11-03 02:54:35,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2721 to 1531. [2022-11-03 02:54:35,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1530 states have (on average 1.2973856209150327) internal successors, (1985), 1530 states have internal predecessors, (1985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:35,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1985 transitions. [2022-11-03 02:54:35,407 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1985 transitions. Word has length 316 [2022-11-03 02:54:35,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:35,408 INFO L495 AbstractCegarLoop]: Abstraction has 1531 states and 1985 transitions. [2022-11-03 02:54:35,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:35,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1985 transitions. [2022-11-03 02:54:35,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:54:35,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:35,412 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:35,437 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:35,643 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Ended with exit code 0 [2022-11-03 02:54:35,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 02:54:35,837 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:35,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:35,837 INFO L85 PathProgramCache]: Analyzing trace with hash -577374881, now seen corresponding path program 1 times [2022-11-03 02:54:35,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:35,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002461446] [2022-11-03 02:54:35,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:35,839 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:35,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:35,840 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:35,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 02:54:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:36,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:54:36,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:54:38,077 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:39,655 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:54:39,656 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002461446] [2022-11-03 02:54:39,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002461446] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:39,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1379658412] [2022-11-03 02:54:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:39,657 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:54:39,657 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:54:39,657 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:54:39,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 02:54:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:41,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:54:41,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:41,115 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-11-03 02:54:41,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:41,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1379658412] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:41,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:54:41,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:54:41,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192768954] [2022-11-03 02:54:41,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:41,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:54:41,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:41,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:54:41,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:54:41,118 INFO L87 Difference]: Start difference. First operand 1531 states and 1985 transitions. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:41,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:41,256 INFO L93 Difference]: Finished difference Result 3004 states and 3980 transitions. [2022-11-03 02:54:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:54:41,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 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 316 [2022-11-03 02:54:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:41,260 INFO L225 Difference]: With dead ends: 3004 [2022-11-03 02:54:41,260 INFO L226 Difference]: Without dead ends: 2661 [2022-11-03 02:54:41,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:54:41,261 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1440 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:41,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1724 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:54:41,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2661 states. [2022-11-03 02:54:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2661 to 1543. [2022-11-03 02:54:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1542 states have (on average 1.2976653696498055) internal successors, (2001), 1542 states have internal predecessors, (2001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:41,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2001 transitions. [2022-11-03 02:54:41,296 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2001 transitions. Word has length 316 [2022-11-03 02:54:41,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:41,296 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2001 transitions. [2022-11-03 02:54:41,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:41,296 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2001 transitions. [2022-11-03 02:54:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:54:41,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:41,299 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:41,314 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:41,537 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:41,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:54:41,708 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:41,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:41,708 INFO L85 PathProgramCache]: Analyzing trace with hash -520116579, now seen corresponding path program 1 times [2022-11-03 02:54:41,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:41,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1587037515] [2022-11-03 02:54:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:41,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:41,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:41,712 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:41,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Waiting until timeout for monitored process [2022-11-03 02:54:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:42,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 02:54:42,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:43,970 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:54:43,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:45,563 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 64 proven. 29 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:54:45,564 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:45,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1587037515] [2022-11-03 02:54:45,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1587037515] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:45,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1141311945] [2022-11-03 02:54:45,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:45,564 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:54:45,564 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:54:45,566 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:54:45,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Waiting until timeout for monitored process [2022-11-03 02:54:47,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:47,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:54:47,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:48,126 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:54:48,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:48,655 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:54:48,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1141311945] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:48,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696617176] [2022-11-03 02:54:48,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:48,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:48,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:54:48,658 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:54:48,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-11-03 02:54:49,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:49,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-03 02:54:49,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:50,034 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:54:50,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 24 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:54:50,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696617176] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:50,478 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:54:50,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 8, 8, 8, 8] total 19 [2022-11-03 02:54:50,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837761402] [2022-11-03 02:54:50,479 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:54:50,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 02:54:50,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:50,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 02:54:50,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:54:50,482 INFO L87 Difference]: Start difference. First operand 1543 states and 2001 transitions. Second operand has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:52,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:52,299 INFO L93 Difference]: Finished difference Result 4635 states and 6203 transitions. [2022-11-03 02:54:52,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 02:54:52,300 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 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 316 [2022-11-03 02:54:52,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:52,302 INFO L225 Difference]: With dead ends: 4635 [2022-11-03 02:54:52,303 INFO L226 Difference]: Without dead ends: 4280 [2022-11-03 02:54:52,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1915 GetRequests, 1875 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=435, Invalid=1287, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 02:54:52,304 INFO L413 NwaCegarLoop]: 295 mSDtfsCounter, 5217 mSDsluCounter, 6145 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 6440 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:52,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 6440 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 643 Invalid, 0 Unknown, 160 Unchecked, 1.1s Time] [2022-11-03 02:54:52,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4280 states. [2022-11-03 02:54:52,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4280 to 2415. [2022-11-03 02:54:52,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2415 states, 2414 states have (on average 1.3024026512013256) internal successors, (3144), 2414 states have internal predecessors, (3144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:52,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 3144 transitions. [2022-11-03 02:54:52,392 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 3144 transitions. Word has length 316 [2022-11-03 02:54:52,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:52,393 INFO L495 AbstractCegarLoop]: Abstraction has 2415 states and 3144 transitions. [2022-11-03 02:54:52,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 50.63157894736842) internal successors, (962), 19 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:52,393 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 3144 transitions. [2022-11-03 02:54:52,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:54:52,397 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:52,397 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:52,427 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (64)] Forceful destruction successful, exit code 0 [2022-11-03 02:54:52,631 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (65)] Ended with exit code 0 [2022-11-03 02:54:52,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-11-03 02:54:53,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:54:53,023 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:54:53,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:54:53,023 INFO L85 PathProgramCache]: Analyzing trace with hash 273890461, now seen corresponding path program 1 times [2022-11-03 02:54:53,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:54:53,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813315451] [2022-11-03 02:54:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:53,025 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:54:53,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:54:53,026 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:54:53,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Waiting until timeout for monitored process [2022-11-03 02:54:53,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:53,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:54:53,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:55,832 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:54:55,832 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:54:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:54:58,158 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:54:58,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813315451] [2022-11-03 02:54:58,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813315451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:54:58,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1183379862] [2022-11-03 02:54:58,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:54:58,158 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:54:58,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:54:58,159 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:54:58,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Waiting until timeout for monitored process [2022-11-03 02:54:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:54:59,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:54:59,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:54:59,613 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:54:59,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:54:59,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1183379862] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:54:59,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:54:59,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:54:59,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556671930] [2022-11-03 02:54:59,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:54:59,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:54:59,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:54:59,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:54:59,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:54:59,614 INFO L87 Difference]: Start difference. First operand 2415 states and 3144 transitions. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:59,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:54:59,770 INFO L93 Difference]: Finished difference Result 4496 states and 5970 transitions. [2022-11-03 02:54:59,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:54:59,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 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 316 [2022-11-03 02:54:59,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:54:59,774 INFO L225 Difference]: With dead ends: 4496 [2022-11-03 02:54:59,774 INFO L226 Difference]: Without dead ends: 3663 [2022-11-03 02:54:59,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 950 GetRequests, 936 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:54:59,776 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 1092 mSDsluCounter, 1002 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1092 SdHoareTripleChecker+Valid, 1425 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:54:59,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1092 Valid, 1425 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:54:59,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3663 states. [2022-11-03 02:54:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3663 to 2423. [2022-11-03 02:54:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2423 states, 2422 states have (on average 1.301403798513625) internal successors, (3152), 2422 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2423 states to 2423 states and 3152 transitions. [2022-11-03 02:54:59,838 INFO L78 Accepts]: Start accepts. Automaton has 2423 states and 3152 transitions. Word has length 316 [2022-11-03 02:54:59,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:54:59,838 INFO L495 AbstractCegarLoop]: Abstraction has 2423 states and 3152 transitions. [2022-11-03 02:54:59,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:54:59,839 INFO L276 IsEmpty]: Start isEmpty. Operand 2423 states and 3152 transitions. [2022-11-03 02:54:59,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:54:59,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:54:59,843 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:54:59,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (68)] Forceful destruction successful, exit code 0 [2022-11-03 02:55:00,069 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (67)] Ended with exit code 0 [2022-11-03 02:55:00,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:55:00,251 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:00,252 INFO L85 PathProgramCache]: Analyzing trace with hash 139876955, now seen corresponding path program 1 times [2022-11-03 02:55:00,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:55:00,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522868980] [2022-11-03 02:55:00,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:00,254 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:55:00,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:55:00,255 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:55:00,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Waiting until timeout for monitored process [2022-11-03 02:55:01,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:01,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:55:01,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:03,114 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:55:03,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:55:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:55:05,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:55:05,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522868980] [2022-11-03 02:55:05,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522868980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:55:05,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1137006230] [2022-11-03 02:55:05,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:05,474 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:55:05,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:55:05,475 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:55:05,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Waiting until timeout for monitored process [2022-11-03 02:55:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:06,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:55:06,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:06,894 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:55:06,895 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:55:06,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1137006230] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:06,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:55:06,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:55:06,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125584747] [2022-11-03 02:55:06,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:06,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:55:06,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:55:06,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:55:06,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:55:06,897 INFO L87 Difference]: Start difference. First operand 2423 states and 3152 transitions. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:07,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:07,069 INFO L93 Difference]: Finished difference Result 4544 states and 6026 transitions. [2022-11-03 02:55:07,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:55:07,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 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 316 [2022-11-03 02:55:07,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:07,072 INFO L225 Difference]: With dead ends: 4544 [2022-11-03 02:55:07,072 INFO L226 Difference]: Without dead ends: 3703 [2022-11-03 02:55:07,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:55:07,074 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1093 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:07,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 1424 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:55:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2022-11-03 02:55:07,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 2471. [2022-11-03 02:55:07,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2471 states, 2470 states have (on average 1.3020242914979756) internal successors, (3216), 2470 states have internal predecessors, (3216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2471 states to 2471 states and 3216 transitions. [2022-11-03 02:55:07,135 INFO L78 Accepts]: Start accepts. Automaton has 2471 states and 3216 transitions. Word has length 316 [2022-11-03 02:55:07,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:07,135 INFO L495 AbstractCegarLoop]: Abstraction has 2471 states and 3216 transitions. [2022-11-03 02:55:07,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:07,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2471 states and 3216 transitions. [2022-11-03 02:55:07,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:55:07,138 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:07,138 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:07,144 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (70)] Ended with exit code 0 [2022-11-03 02:55:07,373 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (69)] Ended with exit code 0 [2022-11-03 02:55:07,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:55:07,546 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:07,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash -881191399, now seen corresponding path program 1 times [2022-11-03 02:55:07,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:55:07,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [338295324] [2022-11-03 02:55:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:07,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:55:07,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:55:07,549 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:55:07,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Waiting until timeout for monitored process [2022-11-03 02:55:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:08,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:55:08,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:10,395 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:55:10,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:55:12,602 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:55:12,603 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:55:12,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [338295324] [2022-11-03 02:55:12,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [338295324] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:55:12,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [784800722] [2022-11-03 02:55:12,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:12,603 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:55:12,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:55:12,604 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:55:12,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Waiting until timeout for monitored process [2022-11-03 02:55:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:13,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:55:13,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:14,035 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-03 02:55:14,035 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:55:14,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [784800722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:55:14,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 02:55:14,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 13 [2022-11-03 02:55:14,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929288515] [2022-11-03 02:55:14,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:55:14,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:55:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:55:14,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:55:14,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:55:14,042 INFO L87 Difference]: Start difference. First operand 2471 states and 3216 transitions. Second operand has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:14,237 INFO L93 Difference]: Finished difference Result 4640 states and 6142 transitions. [2022-11-03 02:55:14,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:55:14,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 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 316 [2022-11-03 02:55:14,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:14,242 INFO L225 Difference]: With dead ends: 4640 [2022-11-03 02:55:14,243 INFO L226 Difference]: Without dead ends: 3751 [2022-11-03 02:55:14,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 951 GetRequests, 937 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:55:14,245 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1093 mSDsluCounter, 983 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1093 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:14,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1093 Valid, 1423 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:55:14,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2022-11-03 02:55:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 2519. [2022-11-03 02:55:14,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2519 states, 2518 states have (on average 1.301032565528197) internal successors, (3276), 2518 states have internal predecessors, (3276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2519 states to 2519 states and 3276 transitions. [2022-11-03 02:55:14,317 INFO L78 Accepts]: Start accepts. Automaton has 2519 states and 3276 transitions. Word has length 316 [2022-11-03 02:55:14,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:14,318 INFO L495 AbstractCegarLoop]: Abstraction has 2519 states and 3276 transitions. [2022-11-03 02:55:14,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 46.2) internal successors, (231), 5 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 2519 states and 3276 transitions. [2022-11-03 02:55:14,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:55:14,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:14,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:14,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (72)] Forceful destruction successful, exit code 0 [2022-11-03 02:55:14,550 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (71)] Ended with exit code 0 [2022-11-03 02:55:14,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:55:14,731 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1274218409, now seen corresponding path program 1 times [2022-11-03 02:55:14,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:55:14,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889887442] [2022-11-03 02:55:14,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:14,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:55:14,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:55:14,734 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:55:14,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-03 02:55:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:15,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:55:15,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:55:17,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:55:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:55:20,062 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:55:20,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889887442] [2022-11-03 02:55:20,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889887442] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:55:20,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [660635521] [2022-11-03 02:55:20,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:20,063 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:55:20,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:55:20,064 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:55:20,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2022-11-03 02:55:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:21,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-03 02:55:21,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:24,138 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:55:24,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:55:29,864 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 61 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:55:29,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [660635521] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:55:29,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474276892] [2022-11-03 02:55:29,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:29,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:55:29,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:55:29,865 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:55:29,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-03 02:55:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:30,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-03 02:55:30,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:55:31,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:55:32,487 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 35 proven. 61 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-03 02:55:32,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474276892] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:55:32,487 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:55:32,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7, 7, 10, 10] total 27 [2022-11-03 02:55:32,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340082971] [2022-11-03 02:55:32,489 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:55:32,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-03 02:55:32,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:55:32,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-03 02:55:32,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=599, Unknown=0, NotChecked=0, Total=702 [2022-11-03 02:55:32,492 INFO L87 Difference]: Start difference. First operand 2519 states and 3276 transitions. Second operand has 27 states, 27 states have (on average 46.22222222222222) internal successors, (1248), 27 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:33,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:55:33,954 INFO L93 Difference]: Finished difference Result 7849 states and 10310 transitions. [2022-11-03 02:55:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-03 02:55:33,956 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 46.22222222222222) internal successors, (1248), 27 states have internal predecessors, (1248), 0 states have call successors, (0), 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 316 [2022-11-03 02:55:33,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:55:33,960 INFO L225 Difference]: With dead ends: 7849 [2022-11-03 02:55:33,961 INFO L226 Difference]: Without dead ends: 6912 [2022-11-03 02:55:33,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1905 GetRequests, 1868 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=339, Invalid=1143, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 02:55:33,963 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 3037 mSDsluCounter, 10108 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 10404 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 230 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:55:33,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3037 Valid, 10404 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 172 Invalid, 0 Unknown, 230 Unchecked, 0.4s Time] [2022-11-03 02:55:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6912 states. [2022-11-03 02:55:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6912 to 3999. [2022-11-03 02:55:34,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3999 states, 3998 states have (on average 1.2913956978489245) internal successors, (5163), 3998 states have internal predecessors, (5163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:34,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3999 states to 3999 states and 5163 transitions. [2022-11-03 02:55:34,059 INFO L78 Accepts]: Start accepts. Automaton has 3999 states and 5163 transitions. Word has length 316 [2022-11-03 02:55:34,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:55:34,060 INFO L495 AbstractCegarLoop]: Abstraction has 3999 states and 5163 transitions. [2022-11-03 02:55:34,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 46.22222222222222) internal successors, (1248), 27 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:55:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3999 states and 5163 transitions. [2022-11-03 02:55:34,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:55:34,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:55:34,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:55:34,112 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-11-03 02:55:34,273 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (74)] Ended with exit code 0 [2022-11-03 02:55:34,495 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Ended with exit code 0 [2022-11-03 02:55:34,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:55:34,664 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:55:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:55:34,665 INFO L85 PathProgramCache]: Analyzing trace with hash 969764889, now seen corresponding path program 1 times [2022-11-03 02:55:34,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:55:34,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122186863] [2022-11-03 02:55:34,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:55:34,667 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:55:34,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:55:34,668 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:55:34,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-03 02:55:35,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:55:35,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-03 02:55:35,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:55:37,675 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 02:55:37,675 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:56:19,946 WARN L234 SmtUtils]: Spent 39.73s on a formula simplification. DAG size of input: 167 DAG size of output: 163 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:56:38,098 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 02:56:38,098 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:56:38,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122186863] [2022-11-03 02:56:38,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122186863] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:56:38,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [554276950] [2022-11-03 02:56:38,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:56:38,098 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:56:38,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:56:38,099 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:56:38,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Waiting until timeout for monitored process [2022-11-03 02:56:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:56:39,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 55 conjunts are in the unsatisfiable core [2022-11-03 02:56:39,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:56:42,190 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:56:42,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:57:20,921 WARN L234 SmtUtils]: Spent 22.09s on a formula simplification. DAG size of input: 191 DAG size of output: 152 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:57:45,735 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 14 refuted. 17 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 02:57:45,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [554276950] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:57:45,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87277083] [2022-11-03 02:57:45,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:57:45,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:57:45,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:57:45,737 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:57:45,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-11-03 02:57:46,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:57:46,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 02:57:46,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:57:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 02:57:56,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:17,637 WARN L234 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 132 DAG size of output: 117 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:58:20,158 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 02:58:20,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87277083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:20,158 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 02:58:20,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 10, 8, 18, 11] total 42 [2022-11-03 02:58:20,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918694153] [2022-11-03 02:58:20,159 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 02:58:20,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-03 02:58:20,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:58:20,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-03 02:58:20,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=245, Invalid=1468, Unknown=9, NotChecked=0, Total=1722 [2022-11-03 02:58:20,161 INFO L87 Difference]: Start difference. First operand 3999 states and 5163 transitions. Second operand has 42 states, 42 states have (on average 27.166666666666668) internal successors, (1141), 42 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:23,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:58:23,134 INFO L93 Difference]: Finished difference Result 5576 states and 7238 transitions. [2022-11-03 02:58:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-03 02:58:23,135 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 42 states have (on average 27.166666666666668) internal successors, (1141), 42 states have internal predecessors, (1141), 0 states have call successors, (0), 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 316 [2022-11-03 02:58:23,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:58:23,138 INFO L225 Difference]: With dead ends: 5576 [2022-11-03 02:58:23,138 INFO L226 Difference]: Without dead ends: 5574 [2022-11-03 02:58:23,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1919 GetRequests, 1857 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 804 ImplicationChecksByTransitivity, 104.2s TimeCoverageRelationStatistics Valid=554, Invalid=3097, Unknown=9, NotChecked=0, Total=3660 [2022-11-03 02:58:23,139 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1518 mSDsluCounter, 7474 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1518 SdHoareTripleChecker+Valid, 7828 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1017 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:58:23,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1518 Valid, 7828 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 170 Invalid, 0 Unknown, 1017 Unchecked, 0.4s Time] [2022-11-03 02:58:23,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5574 states. [2022-11-03 02:58:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5574 to 5422. [2022-11-03 02:58:23,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5422 states, 5421 states have (on average 1.2986533849843203) internal successors, (7040), 5421 states have internal predecessors, (7040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:23,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5422 states to 5422 states and 7040 transitions. [2022-11-03 02:58:23,275 INFO L78 Accepts]: Start accepts. Automaton has 5422 states and 7040 transitions. Word has length 316 [2022-11-03 02:58:23,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:58:23,275 INFO L495 AbstractCegarLoop]: Abstraction has 5422 states and 7040 transitions. [2022-11-03 02:58:23,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 27.166666666666668) internal successors, (1141), 42 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 02:58:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 5422 states and 7040 transitions. [2022-11-03 02:58:23,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 02:58:23,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:58:23,280 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:58:23,291 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Ended with exit code 0 [2022-11-03 02:58:23,507 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-11-03 02:58:23,700 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-03 02:58:23,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:58:23,882 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:58:23,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:58:23,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1731365339, now seen corresponding path program 1 times [2022-11-03 02:58:23,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:58:23,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1633656331] [2022-11-03 02:58:23,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:23,884 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:58:23,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:58:23,886 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:58:23,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Waiting until timeout for monitored process [2022-11-03 02:58:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:24,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 02:58:24,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:58:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:58:33,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:58:55,639 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:58:55,639 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:58:55,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1633656331] [2022-11-03 02:58:55,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1633656331] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:58:55,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [477751652] [2022-11-03 02:58:55,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:58:55,640 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:58:55,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:58:55,641 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:58:55,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Waiting until timeout for monitored process [2022-11-03 02:58:57,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:58:57,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 53 conjunts are in the unsatisfiable core [2022-11-03 02:58:57,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:59:00,446 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 30 proven. 5 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-11-03 02:59:00,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:59:34,035 WARN L234 SmtUtils]: Spent 27.32s on a formula simplification. DAG size of input: 171 DAG size of output: 147 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:59:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 12 refuted. 19 times theorem prover too weak. 81 trivial. 0 not checked. [2022-11-03 02:59:51,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [477751652] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:59:51,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [232972082] [2022-11-03 02:59:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:59:51,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:59:51,541 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:59:51,542 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:59:51,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-11-03 02:59:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:59:52,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-03 02:59:52,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:00:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 03:00:03,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:00:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-11-03 03:00:10,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [232972082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:00:10,125 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:00:10,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 10, 8, 17, 14] total 49 [2022-11-03 03:00:10,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249142296] [2022-11-03 03:00:10,126 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:00:10,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-11-03 03:00:10,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:00:10,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-11-03 03:00:10,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=321, Invalid=2030, Unknown=1, NotChecked=0, Total=2352 [2022-11-03 03:00:10,129 INFO L87 Difference]: Start difference. First operand 5422 states and 7040 transitions. Second operand has 49 states, 49 states have (on average 30.53061224489796) internal successors, (1496), 49 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:39,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:00:39,032 INFO L93 Difference]: Finished difference Result 10913 states and 14312 transitions. [2022-11-03 03:00:39,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-11-03 03:00:39,032 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 30.53061224489796) internal successors, (1496), 49 states have internal predecessors, (1496), 0 states have call successors, (0), 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 316 [2022-11-03 03:00:39,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:00:39,036 INFO L225 Difference]: With dead ends: 10913 [2022-11-03 03:00:39,037 INFO L226 Difference]: Without dead ends: 9086 [2022-11-03 03:00:39,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2055 GetRequests, 1892 SyntacticMatches, 6 SemanticMatches, 157 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7203 ImplicationChecksByTransitivity, 67.8s TimeCoverageRelationStatistics Valid=3095, Invalid=22026, Unknown=1, NotChecked=0, Total=25122 [2022-11-03 03:00:39,040 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 8820 mSDsluCounter, 12853 mSDsCounter, 0 mSdLazyCounter, 1123 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8820 SdHoareTripleChecker+Valid, 13328 SdHoareTripleChecker+Invalid, 2902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1770 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 03:00:39,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8820 Valid, 13328 Invalid, 2902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1123 Invalid, 0 Unknown, 1770 Unchecked, 1.8s Time] [2022-11-03 03:00:39,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9086 states. [2022-11-03 03:00:39,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9086 to 6423. [2022-11-03 03:00:39,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6423 states, 6422 states have (on average 1.3041108688881968) internal successors, (8375), 6422 states have internal predecessors, (8375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:39,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6423 states to 6423 states and 8375 transitions. [2022-11-03 03:00:39,171 INFO L78 Accepts]: Start accepts. Automaton has 6423 states and 8375 transitions. Word has length 316 [2022-11-03 03:00:39,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:00:39,171 INFO L495 AbstractCegarLoop]: Abstraction has 6423 states and 8375 transitions. [2022-11-03 03:00:39,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 30.53061224489796) internal successors, (1496), 49 states have internal predecessors, (1496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:39,172 INFO L276 IsEmpty]: Start isEmpty. Operand 6423 states and 8375 transitions. [2022-11-03 03:00:39,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 03:00:39,177 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:00:39,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:39,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-11-03 03:00:39,396 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (79)] Forceful destruction successful, exit code 0 [2022-11-03 03:00:39,588 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (80)] Ended with exit code 0 [2022-11-03 03:00:39,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:00:39,779 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:00:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:00:39,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1754057175, now seen corresponding path program 1 times [2022-11-03 03:00:39,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:00:39,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2084415668] [2022-11-03 03:00:39,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:00:39,781 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:00:39,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:00:39,782 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:00:39,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 03:00:40,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:00:40,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 03:00:40,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:00:40,891 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 03:00:40,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:00:40,891 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:00:40,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2084415668] [2022-11-03 03:00:40,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2084415668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:00:40,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:00:40,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 03:00:40,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360201784] [2022-11-03 03:00:40,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:00:40,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 03:00:40,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:00:40,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 03:00:40,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 03:00:40,893 INFO L87 Difference]: Start difference. First operand 6423 states and 8375 transitions. Second operand has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:00:41,159 INFO L93 Difference]: Finished difference Result 15925 states and 20921 transitions. [2022-11-03 03:00:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 03:00:41,160 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 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 316 [2022-11-03 03:00:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:00:41,167 INFO L225 Difference]: With dead ends: 15925 [2022-11-03 03:00:41,167 INFO L226 Difference]: Without dead ends: 11030 [2022-11-03 03:00:41,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:00:41,171 INFO L413 NwaCegarLoop]: 449 mSDtfsCounter, 1257 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1257 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:00:41,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1257 Valid, 1441 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:00:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11030 states. [2022-11-03 03:00:41,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11030 to 6773. [2022-11-03 03:00:41,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 1.297105729474306) internal successors, (8784), 6772 states have internal predecessors, (8784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 8784 transitions. [2022-11-03 03:00:41,352 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 8784 transitions. Word has length 316 [2022-11-03 03:00:41,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:00:41,352 INFO L495 AbstractCegarLoop]: Abstraction has 6773 states and 8784 transitions. [2022-11-03 03:00:41,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.666666666666664) internal successors, (298), 6 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:41,352 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 8784 transitions. [2022-11-03 03:00:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 03:00:41,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:00:41,359 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:41,382 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Ended with exit code 0 [2022-11-03 03:00:41,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:00:41,560 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:00:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:00:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash -240147113, now seen corresponding path program 1 times [2022-11-03 03:00:41,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:00:41,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643394624] [2022-11-03 03:00:41,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:00:41,562 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:00:41,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:00:41,563 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:00:41,565 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Waiting until timeout for monitored process [2022-11-03 03:00:42,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:00:42,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 03:00:42,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:00:42,406 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:00:42,406 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 03:00:42,406 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:00:42,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643394624] [2022-11-03 03:00:42,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643394624] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:00:42,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:00:42,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 03:00:42,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23813647] [2022-11-03 03:00:42,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:00:42,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:00:42,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:00:42,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:00:42,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:00:42,408 INFO L87 Difference]: Start difference. First operand 6773 states and 8784 transitions. Second operand has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:42,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:00:42,681 INFO L93 Difference]: Finished difference Result 15372 states and 20107 transitions. [2022-11-03 03:00:42,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:00:42,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 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 316 [2022-11-03 03:00:42,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:00:42,687 INFO L225 Difference]: With dead ends: 15372 [2022-11-03 03:00:42,687 INFO L226 Difference]: Without dead ends: 10947 [2022-11-03 03:00:42,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 315 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 03:00:42,690 INFO L413 NwaCegarLoop]: 649 mSDtfsCounter, 650 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 650 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:00:42,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [650 Valid, 1688 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:00:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10947 states. [2022-11-03 03:00:42,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10947 to 6773. [2022-11-03 03:00:42,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6773 states, 6772 states have (on average 1.2900177200236267) internal successors, (8736), 6772 states have internal predecessors, (8736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:42,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 8736 transitions. [2022-11-03 03:00:42,830 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 8736 transitions. Word has length 316 [2022-11-03 03:00:42,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:00:42,830 INFO L495 AbstractCegarLoop]: Abstraction has 6773 states and 8736 transitions. [2022-11-03 03:00:42,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.8) internal successors, (224), 5 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:00:42,831 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 8736 transitions. [2022-11-03 03:00:42,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 03:00:42,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:00:42,838 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:00:42,862 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (83)] Ended with exit code 0 [2022-11-03 03:00:43,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:00:43,039 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:00:43,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:00:43,039 INFO L85 PathProgramCache]: Analyzing trace with hash -240087531, now seen corresponding path program 1 times [2022-11-03 03:00:43,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:00:43,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [417554082] [2022-11-03 03:00:43,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:00:43,041 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:00:43,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:00:43,042 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:00:43,050 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-03 03:00:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:00:43,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 72 conjunts are in the unsatisfiable core [2022-11-03 03:00:43,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:00:50,331 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 2 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-11-03 03:00:50,332 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:00:58,483 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:00:58,483 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:00:58,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [417554082] [2022-11-03 03:00:58,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [417554082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:00:58,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1966006149] [2022-11-03 03:00:58,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:00:58,483 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:00:58,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:00:58,484 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:00:58,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (85)] Waiting until timeout for monitored process [2022-11-03 03:01:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:01:00,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 80 conjunts are in the unsatisfiable core [2022-11-03 03:01:00,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:01:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-03 03:01:09,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:01:14,007 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:01:14,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1966006149] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:01:14,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276313001] [2022-11-03 03:01:14,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:01:14,008 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 03:01:14,008 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:01:14,009 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 03:01:14,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-11-03 03:01:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:01:14,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 71 conjunts are in the unsatisfiable core [2022-11-03 03:01:14,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:01:24,080 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:01:24,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:01:39,105 WARN L234 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 138 DAG size of output: 123 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:01:41,251 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:01:41,252 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276313001] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:01:41,252 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 03:01:41,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 25, 21, 22, 22] total 66 [2022-11-03 03:01:41,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836563103] [2022-11-03 03:01:41,252 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 03:01:41,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-03 03:01:41,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:01:41,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-03 03:01:41,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=358, Invalid=3930, Unknown=2, NotChecked=0, Total=4290 [2022-11-03 03:01:41,255 INFO L87 Difference]: Start difference. First operand 6773 states and 8736 transitions. Second operand has 66 states, 66 states have (on average 7.681818181818182) internal successors, (507), 66 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:01:54,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:01:54,026 INFO L93 Difference]: Finished difference Result 21411 states and 28482 transitions. [2022-11-03 03:01:54,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 03:01:54,026 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 7.681818181818182) internal successors, (507), 66 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 316 [2022-11-03 03:01:54,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:01:54,037 INFO L225 Difference]: With dead ends: 21411 [2022-11-03 03:01:54,037 INFO L226 Difference]: Without dead ends: 21409 [2022-11-03 03:01:54,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1948 GetRequests, 1830 SyntacticMatches, 7 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3556 ImplicationChecksByTransitivity, 37.4s TimeCoverageRelationStatistics Valid=1235, Invalid=11419, Unknown=2, NotChecked=0, Total=12656 [2022-11-03 03:01:54,040 INFO L413 NwaCegarLoop]: 699 mSDtfsCounter, 6223 mSDsluCounter, 25633 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6223 SdHoareTripleChecker+Valid, 26332 SdHoareTripleChecker+Invalid, 6370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4683 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 03:01:54,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6223 Valid, 26332 Invalid, 6370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1657 Invalid, 0 Unknown, 4683 Unchecked, 2.9s Time] [2022-11-03 03:01:54,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21409 states. [2022-11-03 03:01:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21409 to 11266. [2022-11-03 03:01:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11266 states, 11265 states have (on average 1.3015534842432313) internal successors, (14662), 11265 states have internal predecessors, (14662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:01:54,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11266 states to 11266 states and 14662 transitions. [2022-11-03 03:01:54,316 INFO L78 Accepts]: Start accepts. Automaton has 11266 states and 14662 transitions. Word has length 316 [2022-11-03 03:01:54,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:01:54,316 INFO L495 AbstractCegarLoop]: Abstraction has 11266 states and 14662 transitions. [2022-11-03 03:01:54,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 7.681818181818182) internal successors, (507), 66 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:01:54,316 INFO L276 IsEmpty]: Start isEmpty. Operand 11266 states and 14662 transitions. [2022-11-03 03:01:54,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 03:01:54,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:01:54,325 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:54,355 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-11-03 03:01:54,545 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2022-11-03 03:01:54,737 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (85)] Ended with exit code 0 [2022-11-03 03:01:54,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 03:01:54,926 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:01:54,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:01:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1049434157, now seen corresponding path program 1 times [2022-11-03 03:01:54,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:01:54,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428276219] [2022-11-03 03:01:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:01:54,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:01:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:01:54,930 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:01:54,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Waiting until timeout for monitored process [2022-11-03 03:01:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:01:55,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 03:01:55,818 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:01:56,423 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 17 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 03:01:56,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:01:56,488 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 03:01:56,489 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:01:56,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [428276219] [2022-11-03 03:01:56,489 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [428276219] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 03:01:56,489 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 03:01:56,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 03:01:56,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15300712] [2022-11-03 03:01:56,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:01:56,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 03:01:56,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 03:01:56,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 03:01:56,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-03 03:01:56,491 INFO L87 Difference]: Start difference. First operand 11266 states and 14662 transitions. Second operand has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:01:57,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:01:57,114 INFO L93 Difference]: Finished difference Result 40352 states and 52970 transitions. [2022-11-03 03:01:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 03:01:57,114 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 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 316 [2022-11-03 03:01:57,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:01:57,136 INFO L225 Difference]: With dead ends: 40352 [2022-11-03 03:01:57,136 INFO L226 Difference]: Without dead ends: 31002 [2022-11-03 03:01:57,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 634 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 03:01:57,145 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1731 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1731 SdHoareTripleChecker+Valid, 1307 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 03:01:57,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1731 Valid, 1307 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 03:01:57,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31002 states. [2022-11-03 03:01:57,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31002 to 13102. [2022-11-03 03:01:57,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13102 states, 13101 states have (on average 1.3000534310357987) internal successors, (17032), 13101 states have internal predecessors, (17032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:01:57,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13102 states to 13102 states and 17032 transitions. [2022-11-03 03:01:57,468 INFO L78 Accepts]: Start accepts. Automaton has 13102 states and 17032 transitions. Word has length 316 [2022-11-03 03:01:57,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:01:57,468 INFO L495 AbstractCegarLoop]: Abstraction has 13102 states and 17032 transitions. [2022-11-03 03:01:57,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.6) internal successors, (228), 5 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-03 03:01:57,469 INFO L276 IsEmpty]: Start isEmpty. Operand 13102 states and 17032 transitions. [2022-11-03 03:01:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-03 03:01:57,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:01:57,527 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:01:57,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (87)] Forceful destruction successful, exit code 0 [2022-11-03 03:01:57,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 03:01:57,728 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:01:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:01:57,728 INFO L85 PathProgramCache]: Analyzing trace with hash 262137179, now seen corresponding path program 1 times [2022-11-03 03:01:57,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 03:01:57,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [520109853] [2022-11-03 03:01:57,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:01:57,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 03:01:57,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 03:01:57,731 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 03:01:57,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 03:01:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:01:58,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2320 conjuncts, 45 conjunts are in the unsatisfiable core [2022-11-03 03:01:58,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 03:02:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:02:02,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 03:02:14,763 WARN L234 SmtUtils]: Spent 10.93s on a formula simplification. DAG size of input: 199 DAG size of output: 133 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 03:02:25,316 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 5 proven. 12 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-11-03 03:02:25,316 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 03:02:25,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [520109853] [2022-11-03 03:02:25,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [520109853] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 03:02:25,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1972633145] [2022-11-03 03:02:25,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:02:25,317 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 03:02:25,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 03:02:25,318 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 03:02:25,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6e7aca46-94b2-411a-9fa5-0740abfc8e10/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Waiting until timeout for monitored process