./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.09.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 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_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.09.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3945fa4b58cef50cb4b44b435a699812e99a1f6375664d08551274c6b50bee45 --- 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-2329fc7 [2022-12-14 08:46:04,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:46:04,092 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:46:04,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:46:04,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:46:04,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:46:04,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:46:04,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:46:04,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:46:04,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:46:04,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:46:04,120 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:46:04,120 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:46:04,121 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:46:04,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:46:04,124 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:46:04,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:46:04,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:46:04,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:46:04,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:46:04,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:46:04,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:46:04,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:46:04,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:46:04,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:46:04,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:46:04,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:46:04,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:46:04,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:46:04,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:46:04,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:46:04,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:46:04,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:46:04,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:46:04,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:46:04,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:46:04,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:46:04,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:46:04,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:46:04,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:46:04,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:46:04,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:46:04,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:46:04,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:46:04,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:46:04,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:46:04,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:46:04,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:46:04,158 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:46:04,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:46:04,158 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:46:04,159 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:46:04,159 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:46:04,159 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:46:04,159 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:46:04,159 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:46:04,159 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:46:04,159 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:46:04,160 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:46:04,160 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:46:04,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:46:04,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:46:04,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:46:04,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:46:04,162 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:46:04,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:46:04,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:46:04,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:46:04,162 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:46:04,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:46:04,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:46:04,162 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:46:04,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:46:04,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:46:04,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:46:04,163 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_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3945fa4b58cef50cb4b44b435a699812e99a1f6375664d08551274c6b50bee45 [2022-12-14 08:46:04,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:46:04,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:46:04,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:46:04,392 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:46:04,392 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:46:04,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/systemc/transmitter.09.cil.c [2022-12-14 08:46:06,959 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:46:07,137 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:46:07,138 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/sv-benchmarks/c/systemc/transmitter.09.cil.c [2022-12-14 08:46:07,147 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/data/2c40552da/ae768f6640ee4e139a3acca80a0bfe48/FLAG58a0ec747 [2022-12-14 08:46:07,550 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/data/2c40552da/ae768f6640ee4e139a3acca80a0bfe48 [2022-12-14 08:46:07,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:46:07,557 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:46:07,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:46:07,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:46:07,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:46:07,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68b4182a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07, skipping insertion in model container [2022-12-14 08:46:07,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,572 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:46:07,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:46:07,688 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/sv-benchmarks/c/systemc/transmitter.09.cil.c[706,719] [2022-12-14 08:46:07,753 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:46:07,761 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:46:07,769 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/sv-benchmarks/c/systemc/transmitter.09.cil.c[706,719] [2022-12-14 08:46:07,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:46:07,819 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:46:07,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07 WrapperNode [2022-12-14 08:46:07,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:46:07,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:46:07,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:46:07,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:46:07,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,857 INFO L138 Inliner]: procedures = 46, calls = 57, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 663 [2022-12-14 08:46:07,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:46:07,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:46:07,858 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:46:07,858 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:46:07,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,880 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,882 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,887 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:46:07,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:46:07,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:46:07,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:46:07,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (1/1) ... [2022-12-14 08:46:07,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:46:07,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:46:07,913 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:46:07,915 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_07a1def7-e2c7-4420-b622-0aea6f04f35e/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:46:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:46:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 08:46:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 08:46:07,941 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 08:46:07,941 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 08:46:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 08:46:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 08:46:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 08:46:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 08:46:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 08:46:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 08:46:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:46:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 08:46:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 08:46:07,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:46:07,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:46:08,029 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:46:08,031 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:46:08,533 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:46:08,763 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:46:08,763 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-12-14 08:46:08,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:46:08 BoogieIcfgContainer [2022-12-14 08:46:08,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:46:08,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:46:08,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:46:08,769 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:46:08,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:46:07" (1/3) ... [2022-12-14 08:46:08,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4a54be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:46:08, skipping insertion in model container [2022-12-14 08:46:08,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:46:07" (2/3) ... [2022-12-14 08:46:08,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4a54be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:46:08, skipping insertion in model container [2022-12-14 08:46:08,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:46:08" (3/3) ... [2022-12-14 08:46:08,771 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.09.cil.c [2022-12-14 08:46:08,786 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:46:08,786 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:46:08,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:46:08,826 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;@228f0a28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:46:08,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:46:08,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 123 states have (on average 1.5528455284552845) internal successors, (191), 125 states have internal predecessors, (191), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-12-14 08:46:08,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:46:08,837 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:08,838 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] [2022-12-14 08:46:08,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:08,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:08,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1715794397, now seen corresponding path program 1 times [2022-12-14 08:46:08,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:08,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141018383] [2022-12-14 08:46:08,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:08,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:09,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:09,108 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:09,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141018383] [2022-12-14 08:46:09,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141018383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:09,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:09,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:46:09,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851201003] [2022-12-14 08:46:09,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:09,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:46:09,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:09,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:46:09,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:46:09,137 INFO L87 Difference]: Start difference. First operand has 153 states, 123 states have (on average 1.5528455284552845) internal successors, (191), 125 states have internal predecessors, (191), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:09,471 INFO L93 Difference]: Finished difference Result 442 states and 701 transitions. [2022-12-14 08:46:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:46:09,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2022-12-14 08:46:09,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:09,481 INFO L225 Difference]: With dead ends: 442 [2022-12-14 08:46:09,481 INFO L226 Difference]: Without dead ends: 290 [2022-12-14 08:46:09,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:46:09,486 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 400 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:09,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 630 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:46:09,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2022-12-14 08:46:09,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 287. [2022-12-14 08:46:09,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 235 states have (on average 1.4978723404255319) internal successors, (352), 236 states have internal predecessors, (352), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2022-12-14 08:46:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 430 transitions. [2022-12-14 08:46:09,534 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 430 transitions. Word has length 65 [2022-12-14 08:46:09,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:09,535 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 430 transitions. [2022-12-14 08:46:09,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:09,535 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 430 transitions. [2022-12-14 08:46:09,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:46:09,537 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:09,537 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] [2022-12-14 08:46:09,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:46:09,537 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:09,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:09,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1471044260, now seen corresponding path program 1 times [2022-12-14 08:46:09,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:09,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358351099] [2022-12-14 08:46:09,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:09,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:09,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:09,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:09,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358351099] [2022-12-14 08:46:09,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358351099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:09,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:09,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:46:09,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633536489] [2022-12-14 08:46:09,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:09,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:46:09,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:09,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:46:09,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:46:09,647 INFO L87 Difference]: Start difference. First operand 287 states and 430 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:10,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:10,137 INFO L93 Difference]: Finished difference Result 979 states and 1483 transitions. [2022-12-14 08:46:10,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:46:10,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2022-12-14 08:46:10,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:10,141 INFO L225 Difference]: With dead ends: 979 [2022-12-14 08:46:10,141 INFO L226 Difference]: Without dead ends: 674 [2022-12-14 08:46:10,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:46:10,143 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 832 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:10,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 1006 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:46:10,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-12-14 08:46:10,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 662. [2022-12-14 08:46:10,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 557 states have (on average 1.4901256732495511) internal successors, (830), 550 states have internal predecessors, (830), 76 states have call successors, (76), 26 states have call predecessors, (76), 28 states have return successors, (86), 86 states have call predecessors, (86), 76 states have call successors, (86) [2022-12-14 08:46:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 992 transitions. [2022-12-14 08:46:10,183 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 992 transitions. Word has length 65 [2022-12-14 08:46:10,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:10,183 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 992 transitions. [2022-12-14 08:46:10,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 992 transitions. [2022-12-14 08:46:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:46:10,185 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:10,185 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] [2022-12-14 08:46:10,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 08:46:10,185 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:10,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:10,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1355719707, now seen corresponding path program 1 times [2022-12-14 08:46:10,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:10,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646231465] [2022-12-14 08:46:10,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:10,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:10,267 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:10,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646231465] [2022-12-14 08:46:10,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646231465] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:10,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:10,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:46:10,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931778608] [2022-12-14 08:46:10,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:10,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:46:10,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:10,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:46:10,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:46:10,269 INFO L87 Difference]: Start difference. First operand 662 states and 992 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:10,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:10,796 INFO L93 Difference]: Finished difference Result 2313 states and 3512 transitions. [2022-12-14 08:46:10,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:46:10,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2022-12-14 08:46:10,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:10,804 INFO L225 Difference]: With dead ends: 2313 [2022-12-14 08:46:10,804 INFO L226 Difference]: Without dead ends: 1613 [2022-12-14 08:46:10,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:46:10,808 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 832 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:10,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 985 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:46:10,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1613 states. [2022-12-14 08:46:10,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1613 to 1257. [2022-12-14 08:46:10,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1060 states have (on average 1.490566037735849) internal successors, (1580), 1054 states have internal predecessors, (1580), 140 states have call successors, (140), 50 states have call predecessors, (140), 56 states have return successors, (169), 153 states have call predecessors, (169), 140 states have call successors, (169) [2022-12-14 08:46:10,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1889 transitions. [2022-12-14 08:46:10,892 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1889 transitions. Word has length 65 [2022-12-14 08:46:10,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:10,892 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1889 transitions. [2022-12-14 08:46:10,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:10,892 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1889 transitions. [2022-12-14 08:46:10,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:46:10,894 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:10,894 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] [2022-12-14 08:46:10,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 08:46:10,895 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:10,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:10,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1631242820, now seen corresponding path program 1 times [2022-12-14 08:46:10,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:10,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022025685] [2022-12-14 08:46:10,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:10,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:10,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:10,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:10,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022025685] [2022-12-14 08:46:10,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022025685] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:10,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:10,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:46:10,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254111614] [2022-12-14 08:46:10,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:10,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:46:10,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:10,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:46:10,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:46:10,977 INFO L87 Difference]: Start difference. First operand 1257 states and 1889 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:11,256 INFO L93 Difference]: Finished difference Result 3732 states and 5702 transitions. [2022-12-14 08:46:11,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:46:11,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2022-12-14 08:46:11,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:11,271 INFO L225 Difference]: With dead ends: 3732 [2022-12-14 08:46:11,271 INFO L226 Difference]: Without dead ends: 2480 [2022-12-14 08:46:11,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:46:11,276 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 415 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:11,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 628 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:46:11,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2480 states. [2022-12-14 08:46:11,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2480 to 2468. [2022-12-14 08:46:11,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2087 states have (on average 1.4796358409199808) internal successors, (3088), 2075 states have internal predecessors, (3088), 268 states have call successors, (268), 100 states have call predecessors, (268), 112 states have return successors, (323), 293 states have call predecessors, (323), 268 states have call successors, (323) [2022-12-14 08:46:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3679 transitions. [2022-12-14 08:46:11,370 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3679 transitions. Word has length 65 [2022-12-14 08:46:11,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:11,370 INFO L495 AbstractCegarLoop]: Abstraction has 2468 states and 3679 transitions. [2022-12-14 08:46:11,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3679 transitions. [2022-12-14 08:46:11,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:46:11,372 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:11,372 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] [2022-12-14 08:46:11,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 08:46:11,372 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:11,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:11,372 INFO L85 PathProgramCache]: Analyzing trace with hash 2031234019, now seen corresponding path program 1 times [2022-12-14 08:46:11,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:11,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500196588] [2022-12-14 08:46:11,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:11,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:11,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:11,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:11,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:11,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500196588] [2022-12-14 08:46:11,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500196588] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:11,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:11,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 08:46:11,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33943462] [2022-12-14 08:46:11,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:11,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:46:11,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:11,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:46:11,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:46:11,423 INFO L87 Difference]: Start difference. First operand 2468 states and 3679 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:11,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:11,861 INFO L93 Difference]: Finished difference Result 7337 states and 11113 transitions. [2022-12-14 08:46:11,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:46:11,861 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2022-12-14 08:46:11,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:11,880 INFO L225 Difference]: With dead ends: 7337 [2022-12-14 08:46:11,880 INFO L226 Difference]: Without dead ends: 4874 [2022-12-14 08:46:11,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:46:11,888 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 421 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:11,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 628 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:46:11,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2022-12-14 08:46:12,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4852. [2022-12-14 08:46:12,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4852 states, 4111 states have (on average 1.4680126489905132) internal successors, (6035), 4088 states have internal predecessors, (6035), 516 states have call successors, (516), 200 states have call predecessors, (516), 224 states have return successors, (620), 564 states have call predecessors, (620), 516 states have call successors, (620) [2022-12-14 08:46:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 7171 transitions. [2022-12-14 08:46:12,092 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 7171 transitions. Word has length 65 [2022-12-14 08:46:12,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:12,093 INFO L495 AbstractCegarLoop]: Abstraction has 4852 states and 7171 transitions. [2022-12-14 08:46:12,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 7171 transitions. [2022-12-14 08:46:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-14 08:46:12,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:12,094 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] [2022-12-14 08:46:12,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 08:46:12,094 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:12,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash 402583746, now seen corresponding path program 1 times [2022-12-14 08:46:12,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:12,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182463806] [2022-12-14 08:46:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:12,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:46:12,156 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:12,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182463806] [2022-12-14 08:46:12,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182463806] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:12,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:12,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 08:46:12,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110115850] [2022-12-14 08:46:12,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:12,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 08:46:12,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:12,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 08:46:12,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:46:12,158 INFO L87 Difference]: Start difference. First operand 4852 states and 7171 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:13,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:13,011 INFO L93 Difference]: Finished difference Result 16373 states and 24652 transitions. [2022-12-14 08:46:13,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 08:46:13,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 65 [2022-12-14 08:46:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:13,053 INFO L225 Difference]: With dead ends: 16373 [2022-12-14 08:46:13,053 INFO L226 Difference]: Without dead ends: 11214 [2022-12-14 08:46:13,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 08:46:13,070 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 834 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:13,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 829 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:46:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11214 states. [2022-12-14 08:46:13,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11214 to 9336. [2022-12-14 08:46:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9336 states, 7875 states have (on average 1.4627301587301587) internal successors, (11519), 7868 states have internal predecessors, (11519), 1012 states have call successors, (1012), 392 states have call predecessors, (1012), 448 states have return successors, (1260), 1076 states have call predecessors, (1260), 1012 states have call successors, (1260) [2022-12-14 08:46:13,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9336 states to 9336 states and 13791 transitions. [2022-12-14 08:46:13,561 INFO L78 Accepts]: Start accepts. Automaton has 9336 states and 13791 transitions. Word has length 65 [2022-12-14 08:46:13,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:13,561 INFO L495 AbstractCegarLoop]: Abstraction has 9336 states and 13791 transitions. [2022-12-14 08:46:13,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 08:46:13,562 INFO L276 IsEmpty]: Start isEmpty. Operand 9336 states and 13791 transitions. [2022-12-14 08:46:13,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 08:46:13,566 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:13,567 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 08:46:13,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 08:46:13,567 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:13,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:13,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1632205917, now seen corresponding path program 1 times [2022-12-14 08:46:13,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:13,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645485192] [2022-12-14 08:46:13,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:13,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:13,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:13,742 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 08:46:13,742 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:13,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645485192] [2022-12-14 08:46:13,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645485192] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:13,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:13,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:46:13,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438976134] [2022-12-14 08:46:13,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:13,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:46:13,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:13,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:46:13,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:46:13,744 INFO L87 Difference]: Start difference. First operand 9336 states and 13791 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:14,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:14,781 INFO L93 Difference]: Finished difference Result 28904 states and 42773 transitions. [2022-12-14 08:46:14,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:46:14,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 84 [2022-12-14 08:46:14,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:14,840 INFO L225 Difference]: With dead ends: 28904 [2022-12-14 08:46:14,841 INFO L226 Difference]: Without dead ends: 19574 [2022-12-14 08:46:14,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:46:14,857 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 846 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:14,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 561 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:46:14,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19574 states. [2022-12-14 08:46:15,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19574 to 15724. [2022-12-14 08:46:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15724 states, 13415 states have (on average 1.448751397689154) internal successors, (19435), 13400 states have internal predecessors, (19435), 1540 states have call successors, (1540), 656 states have call predecessors, (1540), 768 states have return successors, (2036), 1668 states have call predecessors, (2036), 1540 states have call successors, (2036) [2022-12-14 08:46:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 23011 transitions. [2022-12-14 08:46:15,647 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 23011 transitions. Word has length 84 [2022-12-14 08:46:15,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:15,647 INFO L495 AbstractCegarLoop]: Abstraction has 15724 states and 23011 transitions. [2022-12-14 08:46:15,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:15,648 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 23011 transitions. [2022-12-14 08:46:15,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 08:46:15,652 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:15,652 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 08:46:15,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 08:46:15,652 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:15,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:15,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1816406557, now seen corresponding path program 1 times [2022-12-14 08:46:15,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:15,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322195573] [2022-12-14 08:46:15,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:15,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:15,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:15,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-12-14 08:46:15,824 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:15,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322195573] [2022-12-14 08:46:15,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322195573] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:15,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:15,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:46:15,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998411632] [2022-12-14 08:46:15,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:15,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:46:15,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:15,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:46:15,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:46:15,826 INFO L87 Difference]: Start difference. First operand 15724 states and 23011 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:17,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:17,718 INFO L93 Difference]: Finished difference Result 57888 states and 84854 transitions. [2022-12-14 08:46:17,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:46:17,719 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 86 [2022-12-14 08:46:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:17,826 INFO L225 Difference]: With dead ends: 57888 [2022-12-14 08:46:17,826 INFO L226 Difference]: Without dead ends: 42170 [2022-12-14 08:46:17,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:46:17,856 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 876 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:17,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 532 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 08:46:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42170 states. [2022-12-14 08:46:19,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42170 to 30824. [2022-12-14 08:46:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30824 states, 26307 states have (on average 1.4421636826700117) internal successors, (37939), 26284 states have internal predecessors, (37939), 2980 states have call successors, (2980), 1312 states have call predecessors, (2980), 1536 states have return successors, (3916), 3228 states have call predecessors, (3916), 2980 states have call successors, (3916) [2022-12-14 08:46:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30824 states to 30824 states and 44835 transitions. [2022-12-14 08:46:19,340 INFO L78 Accepts]: Start accepts. Automaton has 30824 states and 44835 transitions. Word has length 86 [2022-12-14 08:46:19,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:19,341 INFO L495 AbstractCegarLoop]: Abstraction has 30824 states and 44835 transitions. [2022-12-14 08:46:19,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:19,341 INFO L276 IsEmpty]: Start isEmpty. Operand 30824 states and 44835 transitions. [2022-12-14 08:46:19,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 08:46:19,352 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:19,352 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-14 08:46:19,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 08:46:19,353 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash 697926909, now seen corresponding path program 1 times [2022-12-14 08:46:19,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:19,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785449005] [2022-12-14 08:46:19,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:19,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:19,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:19,547 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 08:46:19,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:19,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785449005] [2022-12-14 08:46:19,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785449005] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:19,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:19,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:46:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995259398] [2022-12-14 08:46:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:19,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:46:19,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:19,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:46:19,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:46:19,550 INFO L87 Difference]: Start difference. First operand 30824 states and 44835 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:22,482 INFO L93 Difference]: Finished difference Result 87836 states and 128157 transitions. [2022-12-14 08:46:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:46:22,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 88 [2022-12-14 08:46:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:22,627 INFO L225 Difference]: With dead ends: 87836 [2022-12-14 08:46:22,627 INFO L226 Difference]: Without dead ends: 57018 [2022-12-14 08:46:22,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:46:22,687 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 758 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:22,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 585 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:46:22,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57018 states. [2022-12-14 08:46:25,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57018 to 45784. [2022-12-14 08:46:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45784 states, 39027 states have (on average 1.4366208009839343) internal successors, (56067), 38932 states have internal predecessors, (56067), 4452 states have call successors, (4452), 1984 states have call predecessors, (4452), 2304 states have return successors, (5764), 4868 states have call predecessors, (5764), 4452 states have call successors, (5764) [2022-12-14 08:46:25,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45784 states to 45784 states and 66283 transitions. [2022-12-14 08:46:25,512 INFO L78 Accepts]: Start accepts. Automaton has 45784 states and 66283 transitions. Word has length 88 [2022-12-14 08:46:25,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:25,513 INFO L495 AbstractCegarLoop]: Abstraction has 45784 states and 66283 transitions. [2022-12-14 08:46:25,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:25,513 INFO L276 IsEmpty]: Start isEmpty. Operand 45784 states and 66283 transitions. [2022-12-14 08:46:25,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-12-14 08:46:25,521 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:25,521 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:46:25,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 08:46:25,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:25,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:25,522 INFO L85 PathProgramCache]: Analyzing trace with hash 160198757, now seen corresponding path program 1 times [2022-12-14 08:46:25,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:25,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132606978] [2022-12-14 08:46:25,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:25,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-12-14 08:46:25,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:25,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132606978] [2022-12-14 08:46:25,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132606978] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:25,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:25,662 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:46:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002071916] [2022-12-14 08:46:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:25,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:46:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:25,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:46:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:46:25,664 INFO L87 Difference]: Start difference. First operand 45784 states and 66283 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:30,402 INFO L93 Difference]: Finished difference Result 128132 states and 186221 transitions. [2022-12-14 08:46:30,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:46:30,403 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 90 [2022-12-14 08:46:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:30,656 INFO L225 Difference]: With dead ends: 128132 [2022-12-14 08:46:30,656 INFO L226 Difference]: Without dead ends: 82354 [2022-12-14 08:46:30,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:46:30,758 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 735 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:30,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 575 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:46:30,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82354 states. [2022-12-14 08:46:34,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82354 to 68176. [2022-12-14 08:46:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68176 states, 58051 states have (on average 1.430931422369985) internal successors, (83067), 57796 states have internal predecessors, (83067), 6668 states have call successors, (6668), 3008 states have call predecessors, (6668), 3456 states have return successors, (8476), 7372 states have call predecessors, (8476), 6668 states have call successors, (8476) [2022-12-14 08:46:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68176 states to 68176 states and 98211 transitions. [2022-12-14 08:46:34,706 INFO L78 Accepts]: Start accepts. Automaton has 68176 states and 98211 transitions. Word has length 90 [2022-12-14 08:46:34,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:34,706 INFO L495 AbstractCegarLoop]: Abstraction has 68176 states and 98211 transitions. [2022-12-14 08:46:34,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:34,706 INFO L276 IsEmpty]: Start isEmpty. Operand 68176 states and 98211 transitions. [2022-12-14 08:46:34,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-14 08:46:34,719 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:34,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:46:34,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 08:46:34,719 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:34,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:34,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2056606909, now seen corresponding path program 1 times [2022-12-14 08:46:34,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:34,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134583463] [2022-12-14 08:46:34,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:34,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:34,896 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-14 08:46:34,896 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:34,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134583463] [2022-12-14 08:46:34,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134583463] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:34,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:34,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:46:34,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050267725] [2022-12-14 08:46:34,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:34,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:46:34,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:34,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:46:34,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:46:34,898 INFO L87 Difference]: Start difference. First operand 68176 states and 98211 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:44,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:46:44,395 INFO L93 Difference]: Finished difference Result 234052 states and 338446 transitions. [2022-12-14 08:46:44,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:46:44,396 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 92 [2022-12-14 08:46:44,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:46:44,827 INFO L225 Difference]: With dead ends: 234052 [2022-12-14 08:46:44,827 INFO L226 Difference]: Without dead ends: 165882 [2022-12-14 08:46:44,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:46:44,944 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 737 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:46:44,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 607 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:46:45,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165882 states. [2022-12-14 08:46:52,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165882 to 133432. [2022-12-14 08:46:53,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133432 states, 113619 states have (on average 1.42345030320633) internal successors, (161731), 113172 states have internal predecessors, (161731), 12900 states have call successors, (12900), 6016 states have call predecessors, (12900), 6912 states have return successors, (16292), 14244 states have call predecessors, (16292), 12900 states have call successors, (16292) [2022-12-14 08:46:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133432 states to 133432 states and 190923 transitions. [2022-12-14 08:46:53,365 INFO L78 Accepts]: Start accepts. Automaton has 133432 states and 190923 transitions. Word has length 92 [2022-12-14 08:46:53,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:46:53,365 INFO L495 AbstractCegarLoop]: Abstraction has 133432 states and 190923 transitions. [2022-12-14 08:46:53,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:46:53,365 INFO L276 IsEmpty]: Start isEmpty. Operand 133432 states and 190923 transitions. [2022-12-14 08:46:53,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-12-14 08:46:53,390 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:46:53,390 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:46:53,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 08:46:53,390 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:46:53,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:46:53,391 INFO L85 PathProgramCache]: Analyzing trace with hash -253520723, now seen corresponding path program 1 times [2022-12-14 08:46:53,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:46:53,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613962116] [2022-12-14 08:46:53,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:46:53,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:46:53,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:46:53,522 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-14 08:46:53,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:46:53,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613962116] [2022-12-14 08:46:53,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613962116] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:46:53,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:46:53,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:46:53,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284737333] [2022-12-14 08:46:53,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:46:53,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:46:53,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:46:53,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:46:53,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:46:53,524 INFO L87 Difference]: Start difference. First operand 133432 states and 190923 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:47:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:07,559 INFO L93 Difference]: Finished difference Result 359068 states and 517141 transitions. [2022-12-14 08:47:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:47:07,559 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 94 [2022-12-14 08:47:07,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:08,182 INFO L225 Difference]: With dead ends: 359068 [2022-12-14 08:47:08,183 INFO L226 Difference]: Without dead ends: 225642 [2022-12-14 08:47:08,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:47:08,385 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 665 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:08,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 674 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:47:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225642 states. [2022-12-14 08:47:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225642 to 198344. [2022-12-14 08:47:20,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198344 states, 168843 states have (on average 1.420224705791771) internal successors, (239795), 168204 states have internal predecessors, (239795), 19132 states have call successors, (19132), 9024 states have call predecessors, (19132), 10368 states have return successors, (24108), 21116 states have call predecessors, (24108), 19132 states have call successors, (24108) [2022-12-14 08:47:21,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198344 states to 198344 states and 283035 transitions. [2022-12-14 08:47:21,659 INFO L78 Accepts]: Start accepts. Automaton has 198344 states and 283035 transitions. Word has length 94 [2022-12-14 08:47:21,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:47:21,659 INFO L495 AbstractCegarLoop]: Abstraction has 198344 states and 283035 transitions. [2022-12-14 08:47:21,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:47:21,659 INFO L276 IsEmpty]: Start isEmpty. Operand 198344 states and 283035 transitions. [2022-12-14 08:47:21,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-12-14 08:47:21,687 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:47:21,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:47:21,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 08:47:21,687 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:47:21,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:47:21,687 INFO L85 PathProgramCache]: Analyzing trace with hash 2081546877, now seen corresponding path program 1 times [2022-12-14 08:47:21,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:47:21,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144013135] [2022-12-14 08:47:21,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:47:21,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:47:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:47:21,829 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-12-14 08:47:21,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:47:21,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144013135] [2022-12-14 08:47:21,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144013135] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:47:21,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:47:21,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:47:21,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136565205] [2022-12-14 08:47:21,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:47:21,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:47:21,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:47:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:47:21,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:47:21,831 INFO L87 Difference]: Start difference. First operand 198344 states and 283035 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:47:52,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:47:52,105 INFO L93 Difference]: Finished difference Result 650508 states and 932902 transitions. [2022-12-14 08:47:52,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:47:52,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 96 [2022-12-14 08:47:52,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:47:53,547 INFO L225 Difference]: With dead ends: 650508 [2022-12-14 08:47:53,547 INFO L226 Difference]: Without dead ends: 452170 [2022-12-14 08:47:54,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:47:54,071 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 686 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:47:54,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 588 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:47:54,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452170 states. [2022-12-14 08:48:21,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452170 to 387944. [2022-12-14 08:48:21,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387944 states, 330243 states have (on average 1.412254006897951) internal successors, (466387), 329156 states have internal predecessors, (466387), 36964 states have call successors, (36964), 18048 states have call predecessors, (36964), 20736 states have return successors, (46244), 40740 states have call predecessors, (46244), 36964 states have call successors, (46244) [2022-12-14 08:48:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387944 states to 387944 states and 549595 transitions. [2022-12-14 08:48:22,925 INFO L78 Accepts]: Start accepts. Automaton has 387944 states and 549595 transitions. Word has length 96 [2022-12-14 08:48:22,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:48:22,925 INFO L495 AbstractCegarLoop]: Abstraction has 387944 states and 549595 transitions. [2022-12-14 08:48:22,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:48:22,925 INFO L276 IsEmpty]: Start isEmpty. Operand 387944 states and 549595 transitions. [2022-12-14 08:48:23,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 08:48:23,076 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:48:23,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:48:23,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 08:48:23,076 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:48:23,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:48:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1375807755, now seen corresponding path program 1 times [2022-12-14 08:48:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:48:23,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432981592] [2022-12-14 08:48:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:48:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:48:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:48:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-14 08:48:23,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:48:23,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432981592] [2022-12-14 08:48:23,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432981592] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:48:23,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:48:23,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:48:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932281330] [2022-12-14 08:48:23,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:48:23,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:48:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:48:23,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:48:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:48:23,228 INFO L87 Difference]: Start difference. First operand 387944 states and 549595 transitions. Second operand has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:49:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:49:11,680 INFO L93 Difference]: Finished difference Result 1013220 states and 1445837 transitions. [2022-12-14 08:49:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:49:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 98 [2022-12-14 08:49:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:49:13,855 INFO L225 Difference]: With dead ends: 1013220 [2022-12-14 08:49:13,855 INFO L226 Difference]: Without dead ends: 625282 [2022-12-14 08:49:14,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:49:14,606 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 631 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 637 SdHoareTripleChecker+Valid, 644 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 08:49:14,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [637 Valid, 644 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 08:49:15,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625282 states. [2022-12-14 08:50:00,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625282 to 576512. [2022-12-14 08:50:01,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576512 states, 490611 states have (on average 1.4088126845912545) internal successors, (691179), 489076 states have internal predecessors, (691179), 54796 states have call successors, (54796), 27072 states have call predecessors, (54796), 31104 states have return successors, (68380), 60364 states have call predecessors, (68380), 54796 states have call successors, (68380) [2022-12-14 08:50:03,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576512 states to 576512 states and 814355 transitions. [2022-12-14 08:50:03,214 INFO L78 Accepts]: Start accepts. Automaton has 576512 states and 814355 transitions. Word has length 98 [2022-12-14 08:50:03,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:50:03,214 INFO L495 AbstractCegarLoop]: Abstraction has 576512 states and 814355 transitions. [2022-12-14 08:50:03,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.666666666666666) internal successors, (82), 6 states have internal predecessors, (82), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:50:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 576512 states and 814355 transitions. [2022-12-14 08:50:03,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-12-14 08:50:03,281 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:50:03,281 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:50:03,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 08:50:03,281 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:50:03,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:50:03,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1671163453, now seen corresponding path program 1 times [2022-12-14 08:50:03,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:50:03,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651082860] [2022-12-14 08:50:03,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:50:03,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:50:03,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:50:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-14 08:50:03,437 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:50:03,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651082860] [2022-12-14 08:50:03,437 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651082860] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:50:03,437 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:50:03,437 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 08:50:03,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633991836] [2022-12-14 08:50:03,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:50:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 08:50:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:50:03,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 08:50:03,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 08:50:03,438 INFO L87 Difference]: Start difference. First operand 576512 states and 814355 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:51:49,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:51:49,142 INFO L93 Difference]: Finished difference Result 1796228 states and 2550902 transitions. [2022-12-14 08:51:49,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 08:51:49,143 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 100 [2022-12-14 08:51:49,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:51:53,495 INFO L225 Difference]: With dead ends: 1796228 [2022-12-14 08:51:53,495 INFO L226 Difference]: Without dead ends: 1219722 [2022-12-14 08:51:54,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 08:51:54,946 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 628 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 08:51:54,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [645 Valid, 578 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 08:51:55,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219722 states. [2022-12-14 08:53:31,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219722 to 1126408. [2022-12-14 08:53:32,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126408 states, 958747 states have (on average 1.4003725696142986) internal successors, (1342603), 956252 states have internal predecessors, (1342603), 105604 states have call successors, (105604), 54048 states have call predecessors, (105604), 62056 states have return successors, (130700), 116108 states have call predecessors, (130700), 105604 states have call successors, (130700) [2022-12-14 08:53:37,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126408 states to 1126408 states and 1578907 transitions. [2022-12-14 08:53:37,857 INFO L78 Accepts]: Start accepts. Automaton has 1126408 states and 1578907 transitions. Word has length 100 [2022-12-14 08:53:37,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:37,857 INFO L495 AbstractCegarLoop]: Abstraction has 1126408 states and 1578907 transitions. [2022-12-14 08:53:37,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-14 08:53:37,858 INFO L276 IsEmpty]: Start isEmpty. Operand 1126408 states and 1578907 transitions. [2022-12-14 08:53:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 08:53:37,984 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:37,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:37,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 08:53:37,985 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:53:37,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:37,985 INFO L85 PathProgramCache]: Analyzing trace with hash 202602301, now seen corresponding path program 1 times [2022-12-14 08:53:37,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:53:37,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267709569] [2022-12-14 08:53:37,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:37,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:53:38,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:38,043 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-14 08:53:38,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 08:53:38,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267709569] [2022-12-14 08:53:38,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267709569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:38,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:38,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:53:38,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324871500] [2022-12-14 08:53:38,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:38,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-14 08:53:38,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 08:53:38,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-14 08:53:38,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:53:38,045 INFO L87 Difference]: Start difference. First operand 1126408 states and 1578907 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-12-14 08:55:45,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:55:45,556 INFO L93 Difference]: Finished difference Result 2192442 states and 3104276 transitions. [2022-12-14 08:55:45,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-14 08:55:45,557 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 102 [2022-12-14 08:55:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:55:51,681 INFO L225 Difference]: With dead ends: 2192442 [2022-12-14 08:55:51,682 INFO L226 Difference]: Without dead ends: 1561144 [2022-12-14 08:55:53,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-14 08:55:53,169 INFO L413 NwaCegarLoop]: 335 mSDtfsCounter, 147 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 08:55:53,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 531 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 08:55:54,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561144 states.