./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur --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 858df747258432440d8be7960c85c9b1ad66b3a3b967b98ccb7c6efb60152481 --- 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-38b53e6 [2022-11-25 22:25:56,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:25:56,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:25:56,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:25:56,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:25:56,821 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:25:56,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:25:56,829 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:25:56,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:25:56,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:25:56,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:25:56,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:25:56,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:25:56,841 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:25:56,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:25:56,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:25:56,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:25:56,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:25:56,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:25:56,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:25:56,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:25:56,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:25:56,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:25:56,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:25:56,870 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:25:56,870 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:25:56,871 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:25:56,872 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:25:56,873 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:25:56,874 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:25:56,875 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:25:56,876 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:25:56,878 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:25:56,879 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:25:56,880 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:25:56,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:25:56,881 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:25:56,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:25:56,882 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:25:56,883 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:25:56,883 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:25:56,884 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:25:56,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:25:56,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:25:56,923 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:25:56,923 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:25:56,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:25:56,924 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:25:56,924 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:25:56,924 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:25:56,925 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:25:56,925 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:25:56,925 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:25:56,925 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:25:56,925 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:25:56,926 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:25:56,926 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:25:56,926 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:25:56,926 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:25:56,926 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:25:56,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:25:56,927 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:25:56,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:25:56,928 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:25:56,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:25:56,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:25:56,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:25:56,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:25:56,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:25:56,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:25:56,929 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:25:56,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:25:56,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:25:56,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:25:56,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:25:56,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:25:56,930 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:25:56,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:25:56,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:25:56,932 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:25:56,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:25:56,932 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:25:56,933 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:25:56,933 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_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 858df747258432440d8be7960c85c9b1ad66b3a3b967b98ccb7c6efb60152481 [2022-11-25 22:25:57,259 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:25:57,286 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:25:57,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:25:57,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:25:57,291 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:25:57,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c [2022-11-25 22:26:00,269 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:26:01,113 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:26:01,114 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c [2022-11-25 22:26:01,167 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/data/7834b0b68/a05e65d04db04001b8f7ac7d3df6062c/FLAG210e20d13 [2022-11-25 22:26:01,182 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/data/7834b0b68/a05e65d04db04001b8f7ac7d3df6062c [2022-11-25 22:26:01,185 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:26:01,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:26:01,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:01,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:26:01,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:26:01,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:01" (1/1) ... [2022-11-25 22:26:01,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d885163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:01, skipping insertion in model container [2022-11-25 22:26:01,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:26:01" (1/1) ... [2022-11-25 22:26:01,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:26:01,472 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:26:03,733 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_7adf0605-90cc-4fc2-b25e-26c24b176b0c/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c[382357,382370] [2022-11-25 22:26:03,756 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_7adf0605-90cc-4fc2-b25e-26c24b176b0c/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c[383339,383352] [2022-11-25 22:26:04,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:04,041 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:26:05,228 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_7adf0605-90cc-4fc2-b25e-26c24b176b0c/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c[382357,382370] [2022-11-25 22:26:05,233 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_7adf0605-90cc-4fc2-b25e-26c24b176b0c/sv-benchmarks/c/combinations/Problem05_label46+token_ring.09.cil-1.c[383339,383352] [2022-11-25 22:26:05,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:26:05,384 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:26:05,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05 WrapperNode [2022-11-25 22:26:05,385 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:26:05,386 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:26:05,386 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:26:05,386 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:26:05,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:05,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:05,944 INFO L138 Inliner]: procedures = 62, calls = 68, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 13025 [2022-11-25 22:26:05,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:26:05,945 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:26:05,946 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:26:05,946 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:26:05,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:05,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:06,047 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:06,047 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:06,368 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:06,434 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:06,496 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:06,517 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:06,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:26:06,609 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:26:06,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:26:06,609 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:26:06,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (1/1) ... [2022-11-25 22:26:06,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:26:06,633 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:06,652 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:26:06,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:26:06,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:26:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-25 22:26:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-25 22:26:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-25 22:26:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-25 22:26:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-25 22:26:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-25 22:26:06,701 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-25 22:26:06,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-25 22:26:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-25 22:26:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-25 22:26:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-25 22:26:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-25 22:26:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:26:06,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:26:06,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:26:06,854 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:26:06,856 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:26:16,087 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:26:18,432 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:26:18,432 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-25 22:26:18,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:26:18 BoogieIcfgContainer [2022-11-25 22:26:18,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:26:18,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:26:18,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:26:18,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:26:18,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:26:01" (1/3) ... [2022-11-25 22:26:18,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1acc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:26:18, skipping insertion in model container [2022-11-25 22:26:18,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:26:05" (2/3) ... [2022-11-25 22:26:18,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b1acc6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:26:18, skipping insertion in model container [2022-11-25 22:26:18,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:26:18" (3/3) ... [2022-11-25 22:26:18,448 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.09.cil-1.c [2022-11-25 22:26:18,469 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:26:18,469 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-25 22:26:18,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:26:18,564 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;@52fcc7e9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:26:18,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-25 22:26:18,575 INFO L276 IsEmpty]: Start isEmpty. Operand has 1798 states, 1766 states have (on average 1.962061155152888) internal successors, (3465), 1769 states have internal predecessors, (3465), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-25 22:26:18,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 22:26:18,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:18,592 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] [2022-11-25 22:26:18,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:18,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:18,600 INFO L85 PathProgramCache]: Analyzing trace with hash 139908, now seen corresponding path program 1 times [2022-11-25 22:26:18,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:18,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161745142] [2022-11-25 22:26:18,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:18,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:19,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 22:26:19,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:19,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161745142] [2022-11-25 22:26:19,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161745142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:19,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:19,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:26:19,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573330183] [2022-11-25 22:26:19,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:19,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:26:19,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:19,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:26:19,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:26:19,195 INFO L87 Difference]: Start difference. First operand has 1798 states, 1766 states have (on average 1.962061155152888) internal successors, (3465), 1769 states have internal predecessors, (3465), 23 states have call successors, (23), 6 states have call predecessors, (23), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-11-25 22:26:20,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:20,359 INFO L93 Difference]: Finished difference Result 3734 states and 7259 transitions. [2022-11-25 22:26:20,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:26:20,362 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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 58 [2022-11-25 22:26:20,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:20,388 INFO L225 Difference]: With dead ends: 3734 [2022-11-25 22:26:20,388 INFO L226 Difference]: Without dead ends: 1935 [2022-11-25 22:26:20,399 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 [2022-11-25 22:26:20,403 INFO L413 NwaCegarLoop]: 3421 mSDtfsCounter, 3680 mSDsluCounter, 3335 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3680 SdHoareTripleChecker+Valid, 6756 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:20,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3680 Valid, 6756 Invalid, 692 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [14 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-25 22:26:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1935 states. [2022-11-25 22:26:20,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1935 to 1934. [2022-11-25 22:26:20,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1934 states, 1878 states have (on average 1.9297124600638977) internal successors, (3624), 1881 states have internal predecessors, (3624), 42 states have call successors, (42), 12 states have call predecessors, (42), 12 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-25 22:26:20,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1934 states to 1934 states and 3708 transitions. [2022-11-25 22:26:20,553 INFO L78 Accepts]: Start accepts. Automaton has 1934 states and 3708 transitions. Word has length 58 [2022-11-25 22:26:20,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:20,554 INFO L495 AbstractCegarLoop]: Abstraction has 1934 states and 3708 transitions. [2022-11-25 22:26:20,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 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) [2022-11-25 22:26:20,555 INFO L276 IsEmpty]: Start isEmpty. Operand 1934 states and 3708 transitions. [2022-11-25 22:26:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 22:26:20,563 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:20,564 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:20,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:26:20,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:20,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:20,567 INFO L85 PathProgramCache]: Analyzing trace with hash -437947597, now seen corresponding path program 1 times [2022-11-25 22:26:20,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:20,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296097121] [2022-11-25 22:26:20,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:20,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:20,976 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:26:20,977 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:20,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296097121] [2022-11-25 22:26:20,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296097121] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:20,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790670284] [2022-11-25 22:26:20,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:20,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:20,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:20,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:20,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:26:21,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:21,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 840 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:26:21,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 22:26:21,339 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:21,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790670284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:21,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:26:21,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:26:21,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644383966] [2022-11-25 22:26:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:21,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:21,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:21,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:21,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:21,348 INFO L87 Difference]: Start difference. First operand 1934 states and 3708 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:21,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:21,887 INFO L93 Difference]: Finished difference Result 2503 states and 4585 transitions. [2022-11-25 22:26:21,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:21,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 22:26:21,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:21,905 INFO L225 Difference]: With dead ends: 2503 [2022-11-25 22:26:21,905 INFO L226 Difference]: Without dead ends: 2215 [2022-11-25 22:26:21,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:21,909 INFO L413 NwaCegarLoop]: 3292 mSDtfsCounter, 3471 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3471 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:21,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3471 Valid, 3472 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2215 states. [2022-11-25 22:26:22,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2215 to 2211. [2022-11-25 22:26:22,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2211 states, 2107 states have (on average 1.8818224964404366) internal successors, (3965), 2111 states have internal predecessors, (3965), 78 states have call successors, (78), 24 states have call predecessors, (78), 24 states have return successors, (78), 76 states have call predecessors, (78), 78 states have call successors, (78) [2022-11-25 22:26:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2211 states to 2211 states and 4121 transitions. [2022-11-25 22:26:22,022 INFO L78 Accepts]: Start accepts. Automaton has 2211 states and 4121 transitions. Word has length 115 [2022-11-25 22:26:22,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:22,023 INFO L495 AbstractCegarLoop]: Abstraction has 2211 states and 4121 transitions. [2022-11-25 22:26:22,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:22,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2211 states and 4121 transitions. [2022-11-25 22:26:22,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 22:26:22,035 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:22,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:22,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 22:26:22,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:22,242 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:22,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:22,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1836501045, now seen corresponding path program 1 times [2022-11-25 22:26:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:22,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173555715] [2022-11-25 22:26:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:22,493 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:26:22,493 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:22,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173555715] [2022-11-25 22:26:22,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173555715] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:22,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851837215] [2022-11-25 22:26:22,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:22,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:22,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:22,499 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:22,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:26:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:22,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 834 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:26:22,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:22,778 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 22:26:22,778 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:22,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851837215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:22,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:26:22,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:26:22,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011154957] [2022-11-25 22:26:22,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:22,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:22,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:22,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:22,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:22,781 INFO L87 Difference]: Start difference. First operand 2211 states and 4121 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:23,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:23,441 INFO L93 Difference]: Finished difference Result 3328 states and 5836 transitions. [2022-11-25 22:26:23,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:23,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 22:26:23,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:23,459 INFO L225 Difference]: With dead ends: 3328 [2022-11-25 22:26:23,459 INFO L226 Difference]: Without dead ends: 2763 [2022-11-25 22:26:23,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:23,465 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3465 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:23,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:26:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-11-25 22:26:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2757. [2022-11-25 22:26:23,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2559 states have (on average 1.8112543962485346) internal successors, (4635), 2565 states have internal predecessors, (4635), 148 states have call successors, (148), 48 states have call predecessors, (148), 48 states have return successors, (148), 144 states have call predecessors, (148), 148 states have call successors, (148) [2022-11-25 22:26:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 4931 transitions. [2022-11-25 22:26:23,595 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 4931 transitions. Word has length 115 [2022-11-25 22:26:23,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:23,597 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 4931 transitions. [2022-11-25 22:26:23,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:23,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 4931 transitions. [2022-11-25 22:26:23,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 22:26:23,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:23,603 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:23,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:23,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:23,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:23,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:23,810 INFO L85 PathProgramCache]: Analyzing trace with hash -35354953, now seen corresponding path program 1 times [2022-11-25 22:26:23,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:23,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215195190] [2022-11-25 22:26:23,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:23,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:23,969 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:26:23,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:23,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215195190] [2022-11-25 22:26:23,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215195190] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:23,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138357603] [2022-11-25 22:26:23,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:23,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:23,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:23,971 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:23,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:26:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:24,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 828 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:26:24,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 22:26:24,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:24,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138357603] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:24,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:26:24,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:26:24,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762435682] [2022-11-25 22:26:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:24,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:24,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:24,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:24,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:24,247 INFO L87 Difference]: Start difference. First operand 2757 states and 4931 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:24,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:24,820 INFO L93 Difference]: Finished difference Result 4954 states and 8288 transitions. [2022-11-25 22:26:24,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:24,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 22:26:24,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:24,839 INFO L225 Difference]: With dead ends: 4954 [2022-11-25 22:26:24,839 INFO L226 Difference]: Without dead ends: 3843 [2022-11-25 22:26:24,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:24,847 INFO L413 NwaCegarLoop]: 3290 mSDtfsCounter, 3474 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3474 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:24,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3474 Valid, 3470 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:24,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3843 states. [2022-11-25 22:26:24,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3843 to 3833. [2022-11-25 22:26:25,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3451 states have (on average 1.724427702115329) internal successors, (5951), 3461 states have internal predecessors, (5951), 284 states have call successors, (284), 96 states have call predecessors, (284), 96 states have return successors, (284), 276 states have call predecessors, (284), 284 states have call successors, (284) [2022-11-25 22:26:25,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 6519 transitions. [2022-11-25 22:26:25,028 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 6519 transitions. Word has length 115 [2022-11-25 22:26:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:25,028 INFO L495 AbstractCegarLoop]: Abstraction has 3833 states and 6519 transitions. [2022-11-25 22:26:25,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 2 states have internal predecessors, (70), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:25,029 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 6519 transitions. [2022-11-25 22:26:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 22:26:25,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:25,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:25,054 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-25 22:26:25,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:25,244 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:25,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:25,244 INFO L85 PathProgramCache]: Analyzing trace with hash 660077173, now seen corresponding path program 1 times [2022-11-25 22:26:25,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:25,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189591283] [2022-11-25 22:26:25,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:25,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:25,403 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:26:25,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:25,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189591283] [2022-11-25 22:26:25,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189591283] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:25,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186020033] [2022-11-25 22:26:25,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:25,404 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:25,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:25,405 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:25,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:26:25,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:25,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 822 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:26:25,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:25,698 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:26:25,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:25,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186020033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:25,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:26:25,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:26:25,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605234024] [2022-11-25 22:26:25,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:25,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:25,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:25,703 INFO L87 Difference]: Start difference. First operand 3833 states and 6519 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:26,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:26,328 INFO L93 Difference]: Finished difference Result 8158 states and 13092 transitions. [2022-11-25 22:26:26,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:26,329 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 22:26:26,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:26,356 INFO L225 Difference]: With dead ends: 8158 [2022-11-25 22:26:26,357 INFO L226 Difference]: Without dead ends: 5971 [2022-11-25 22:26:26,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:26,366 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3459 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3459 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:26,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3459 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:26,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5971 states. [2022-11-25 22:26:26,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5971 to 5953. [2022-11-25 22:26:26,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5953 states, 5211 states have (on average 1.637881404720783) internal successors, (8535), 5229 states have internal predecessors, (8535), 548 states have call successors, (548), 192 states have call predecessors, (548), 192 states have return successors, (548), 532 states have call predecessors, (548), 548 states have call successors, (548) [2022-11-25 22:26:26,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5953 states to 5953 states and 9631 transitions. [2022-11-25 22:26:26,612 INFO L78 Accepts]: Start accepts. Automaton has 5953 states and 9631 transitions. Word has length 115 [2022-11-25 22:26:26,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:26,612 INFO L495 AbstractCegarLoop]: Abstraction has 5953 states and 9631 transitions. [2022-11-25 22:26:26,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:26,613 INFO L276 IsEmpty]: Start isEmpty. Operand 5953 states and 9631 transitions. [2022-11-25 22:26:26,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 22:26:26,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:26,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:26,634 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:26,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:26,830 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash 311378551, now seen corresponding path program 1 times [2022-11-25 22:26:26,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:26,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786435078] [2022-11-25 22:26:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:26,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:27,009 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 22:26:27,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:27,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786435078] [2022-11-25 22:26:27,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786435078] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:26:27,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060208834] [2022-11-25 22:26:27,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:27,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:27,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:26:27,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:26:27,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:26:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:27,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 816 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-25 22:26:27,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:26:27,308 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:26:27,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:26:27,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060208834] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:27,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:26:27,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-25 22:26:27,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933608882] [2022-11-25 22:26:27,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:27,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:27,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:27,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:27,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:27,311 INFO L87 Difference]: Start difference. First operand 5953 states and 9631 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:28,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:28,206 INFO L93 Difference]: Finished difference Result 14470 states and 22500 transitions. [2022-11-25 22:26:28,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:28,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 115 [2022-11-25 22:26:28,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:28,275 INFO L225 Difference]: With dead ends: 14470 [2022-11-25 22:26:28,275 INFO L226 Difference]: Without dead ends: 10163 [2022-11-25 22:26:28,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 22:26:28,292 INFO L413 NwaCegarLoop]: 3262 mSDtfsCounter, 3453 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3453 SdHoareTripleChecker+Valid, 3442 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:28,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3453 Valid, 3442 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:28,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10163 states. [2022-11-25 22:26:28,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10163 to 10129. [2022-11-25 22:26:28,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10129 states, 8683 states have (on average 1.5670851088333526) internal successors, (13607), 8717 states have internal predecessors, (13607), 1060 states have call successors, (1060), 384 states have call predecessors, (1060), 384 states have return successors, (1060), 1028 states have call predecessors, (1060), 1060 states have call successors, (1060) [2022-11-25 22:26:28,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10129 states to 10129 states and 15727 transitions. [2022-11-25 22:26:28,781 INFO L78 Accepts]: Start accepts. Automaton has 10129 states and 15727 transitions. Word has length 115 [2022-11-25 22:26:28,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:28,784 INFO L495 AbstractCegarLoop]: Abstraction has 10129 states and 15727 transitions. [2022-11-25 22:26:28,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-25 22:26:28,785 INFO L276 IsEmpty]: Start isEmpty. Operand 10129 states and 15727 transitions. [2022-11-25 22:26:28,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 22:26:28,803 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:28,803 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:26:28,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:26:29,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7adf0605-90cc-4fc2-b25e-26c24b176b0c/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:26:29,021 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:29,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:29,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1792357369, now seen corresponding path program 1 times [2022-11-25 22:26:29,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:29,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451734502] [2022-11-25 22:26:29,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:29,157 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 22:26:29,158 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:29,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451734502] [2022-11-25 22:26:29,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451734502] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:29,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:29,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:29,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875268888] [2022-11-25 22:26:29,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:29,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:29,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:29,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:29,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:29,161 INFO L87 Difference]: Start difference. First operand 10129 states and 15727 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:26:30,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:30,056 INFO L93 Difference]: Finished difference Result 16723 states and 25776 transitions. [2022-11-25 22:26:30,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:30,056 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 115 [2022-11-25 22:26:30,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:30,112 INFO L225 Difference]: With dead ends: 16723 [2022-11-25 22:26:30,112 INFO L226 Difference]: Without dead ends: 12401 [2022-11-25 22:26:30,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:30,133 INFO L413 NwaCegarLoop]: 3348 mSDtfsCounter, 100 mSDsluCounter, 3254 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 6602 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:30,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 6602 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 22:26:30,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12401 states. [2022-11-25 22:26:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12401 to 11713. [2022-11-25 22:26:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11713 states, 10203 states have (on average 1.5908066255023032) internal successors, (16231), 10237 states have internal predecessors, (16231), 1092 states have call successors, (1092), 416 states have call predecessors, (1092), 416 states have return successors, (1092), 1060 states have call predecessors, (1092), 1092 states have call successors, (1092) [2022-11-25 22:26:30,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11713 states to 11713 states and 18415 transitions. [2022-11-25 22:26:30,800 INFO L78 Accepts]: Start accepts. Automaton has 11713 states and 18415 transitions. Word has length 115 [2022-11-25 22:26:30,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:30,802 INFO L495 AbstractCegarLoop]: Abstraction has 11713 states and 18415 transitions. [2022-11-25 22:26:30,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 22:26:30,802 INFO L276 IsEmpty]: Start isEmpty. Operand 11713 states and 18415 transitions. [2022-11-25 22:26:30,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 22:26:30,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:30,834 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 22:26:30,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 22:26:30,835 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 689832525, now seen corresponding path program 1 times [2022-11-25 22:26:30,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:30,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741922209] [2022-11-25 22:26:30,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:30,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:30,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:30,957 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 22:26:30,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:30,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741922209] [2022-11-25 22:26:30,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741922209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:30,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:30,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:30,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255400272] [2022-11-25 22:26:30,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:30,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:30,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:30,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:30,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:30,964 INFO L87 Difference]: Start difference. First operand 11713 states and 18415 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:26:32,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:32,355 INFO L93 Difference]: Finished difference Result 31558 states and 48788 transitions. [2022-11-25 22:26:32,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:32,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-25 22:26:32,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:32,445 INFO L225 Difference]: With dead ends: 31558 [2022-11-25 22:26:32,446 INFO L226 Difference]: Without dead ends: 21491 [2022-11-25 22:26:32,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:32,482 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3461 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3461 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:32,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3461 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:32,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21491 states. [2022-11-25 22:26:33,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21491 to 21393. [2022-11-25 22:26:33,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21393 states, 18443 states have (on average 1.5480670172965352) internal successors, (28551), 18509 states have internal predecessors, (28551), 2116 states have call successors, (2116), 832 states have call predecessors, (2116), 832 states have return successors, (2116), 2052 states have call predecessors, (2116), 2116 states have call successors, (2116) [2022-11-25 22:26:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21393 states to 21393 states and 32783 transitions. [2022-11-25 22:26:33,888 INFO L78 Accepts]: Start accepts. Automaton has 21393 states and 32783 transitions. Word has length 156 [2022-11-25 22:26:33,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:33,890 INFO L495 AbstractCegarLoop]: Abstraction has 21393 states and 32783 transitions. [2022-11-25 22:26:33,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:26:33,890 INFO L276 IsEmpty]: Start isEmpty. Operand 21393 states and 32783 transitions. [2022-11-25 22:26:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 22:26:33,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:33,963 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 22:26:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 22:26:33,964 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:33,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:33,964 INFO L85 PathProgramCache]: Analyzing trace with hash 534055082, now seen corresponding path program 1 times [2022-11-25 22:26:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:33,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613321145] [2022-11-25 22:26:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:33,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:34,144 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 22:26:34,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:34,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613321145] [2022-11-25 22:26:34,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613321145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:34,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:34,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:34,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137313477] [2022-11-25 22:26:34,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:34,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:34,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:34,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:34,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:34,148 INFO L87 Difference]: Start difference. First operand 21393 states and 32783 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:26:36,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:36,157 INFO L93 Difference]: Finished difference Result 60310 states and 91924 transitions. [2022-11-25 22:26:36,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:36,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-25 22:26:36,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:36,331 INFO L225 Difference]: With dead ends: 60310 [2022-11-25 22:26:36,331 INFO L226 Difference]: Without dead ends: 40563 [2022-11-25 22:26:36,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:36,396 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3463 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3463 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:36,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3463 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:36,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40563 states. [2022-11-25 22:26:38,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40563 to 40369. [2022-11-25 22:26:38,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40369 states, 34603 states have (on average 1.5186833511545241) internal successors, (52551), 34733 states have internal predecessors, (52551), 4100 states have call successors, (4100), 1664 states have call predecessors, (4100), 1664 states have return successors, (4100), 3972 states have call predecessors, (4100), 4100 states have call successors, (4100) [2022-11-25 22:26:38,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40369 states to 40369 states and 60751 transitions. [2022-11-25 22:26:38,261 INFO L78 Accepts]: Start accepts. Automaton has 40369 states and 60751 transitions. Word has length 156 [2022-11-25 22:26:38,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:38,261 INFO L495 AbstractCegarLoop]: Abstraction has 40369 states and 60751 transitions. [2022-11-25 22:26:38,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:26:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 40369 states and 60751 transitions. [2022-11-25 22:26:38,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 22:26:38,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:38,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 22:26:38,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 22:26:38,346 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:38,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:38,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2013021624, now seen corresponding path program 1 times [2022-11-25 22:26:38,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:38,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673179293] [2022-11-25 22:26:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:38,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:38,470 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 22:26:38,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:38,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673179293] [2022-11-25 22:26:38,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673179293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:38,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:38,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:38,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370836808] [2022-11-25 22:26:38,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:38,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:38,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:38,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:38,473 INFO L87 Difference]: Start difference. First operand 40369 states and 60751 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:26:42,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:42,390 INFO L93 Difference]: Finished difference Result 116662 states and 175828 transitions. [2022-11-25 22:26:42,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:42,390 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-25 22:26:42,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:42,942 INFO L225 Difference]: With dead ends: 116662 [2022-11-25 22:26:42,943 INFO L226 Difference]: Without dead ends: 77939 [2022-11-25 22:26:43,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:43,071 INFO L413 NwaCegarLoop]: 3264 mSDtfsCounter, 3465 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3465 SdHoareTripleChecker+Valid, 3444 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:43,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3465 Valid, 3444 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:43,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77939 states. [2022-11-25 22:26:46,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77939 to 77553. [2022-11-25 22:26:46,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77553 states, 66283 states have (on average 1.4976841724122325) internal successors, (99271), 66541 states have internal predecessors, (99271), 7940 states have call successors, (7940), 3328 states have call predecessors, (7940), 3328 states have return successors, (7940), 7684 states have call predecessors, (7940), 7940 states have call successors, (7940) [2022-11-25 22:26:47,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77553 states to 77553 states and 115151 transitions. [2022-11-25 22:26:47,103 INFO L78 Accepts]: Start accepts. Automaton has 77553 states and 115151 transitions. Word has length 156 [2022-11-25 22:26:47,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:26:47,104 INFO L495 AbstractCegarLoop]: Abstraction has 77553 states and 115151 transitions. [2022-11-25 22:26:47,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:26:47,105 INFO L276 IsEmpty]: Start isEmpty. Operand 77553 states and 115151 transitions. [2022-11-25 22:26:47,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-25 22:26:47,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:26:47,267 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-25 22:26:47,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 22:26:47,268 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:26:47,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:26:47,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1983274382, now seen corresponding path program 1 times [2022-11-25 22:26:47,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:26:47,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527924995] [2022-11-25 22:26:47,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:26:47,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:26:47,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:26:47,373 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-11-25 22:26:47,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:26:47,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527924995] [2022-11-25 22:26:47,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527924995] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:26:47,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:26:47,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:26:47,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950849303] [2022-11-25 22:26:47,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:26:47,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:26:47,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:26:47,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:26:47,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:47,378 INFO L87 Difference]: Start difference. First operand 77553 states and 115151 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:26:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:26:53,818 INFO L93 Difference]: Finished difference Result 227062 states and 338900 transitions. [2022-11-25 22:26:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:26:53,819 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 156 [2022-11-25 22:26:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:26:54,393 INFO L225 Difference]: With dead ends: 227062 [2022-11-25 22:26:54,393 INFO L226 Difference]: Without dead ends: 151155 [2022-11-25 22:26:54,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:26:54,617 INFO L413 NwaCegarLoop]: 3272 mSDtfsCounter, 3468 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3468 SdHoareTripleChecker+Valid, 3452 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:26:54,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3468 Valid, 3452 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:26:54,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151155 states.