./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba --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 7125651fe28e5ed3820e1570dabb559d66d570950097f9760267ff4877c30610 --- 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-b5237d8 [2022-11-22 02:39:57,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:39:57,480 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:39:57,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:39:57,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:39:57,525 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:39:57,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:39:57,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:39:57,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:39:57,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:39:57,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:39:57,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:39:57,533 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:39:57,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:39:57,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:39:57,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:39:57,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:39:57,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:39:57,541 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:39:57,543 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:39:57,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:39:57,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:39:57,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:39:57,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:39:57,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:39:57,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:39:57,557 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:39:57,564 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:39:57,564 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:39:57,567 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:39:57,567 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:39:57,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:39:57,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:39:57,570 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:39:57,572 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:39:57,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:39:57,573 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:39:57,573 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:39:57,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:39:57,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:39:57,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:39:57,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:39:57,618 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:39:57,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:39:57,619 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:39:57,619 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:39:57,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:39:57,620 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:39:57,620 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:39:57,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:39:57,621 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:39:57,621 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:39:57,622 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:39:57,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:39:57,622 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:39:57,622 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:39:57,622 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:39:57,623 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:39:57,623 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:39:57,623 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:39:57,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:39:57,624 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:39:57,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:39:57,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:39:57,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:39:57,625 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:39:57,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:39:57,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:39:57,626 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:39:57,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:39:57,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:39:57,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:39:57,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:39:57,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:39:57,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:39:57,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:39:57,627 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:39:57,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:39:57,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:39:57,628 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:39:57,628 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:39:57,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:39:57,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:39:57,628 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_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7125651fe28e5ed3820e1570dabb559d66d570950097f9760267ff4877c30610 [2022-11-22 02:39:57,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:39:57,959 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:39:57,961 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:39:57,963 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:39:57,963 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:39:57,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2022-11-22 02:40:00,878 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:40:01,171 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:40:01,172 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/sv-benchmarks/c/eca-rers2012/Problem01_label17.c [2022-11-22 02:40:01,192 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/data/5b90cbbe4/d077b2343eb64bd987cd8c575922ba53/FLAG0c727519e [2022-11-22 02:40:01,206 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/data/5b90cbbe4/d077b2343eb64bd987cd8c575922ba53 [2022-11-22 02:40:01,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:40:01,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:40:01,212 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:40:01,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:40:01,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:40:01,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:01,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3dcb4816 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01, skipping insertion in model container [2022-11-22 02:40:01,218 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:01,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:40:01,263 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:40:01,664 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_8630d934-15d3-4a37-8a2c-04051646751c/sv-benchmarks/c/eca-rers2012/Problem01_label17.c[19973,19986] [2022-11-22 02:40:01,705 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:40:01,715 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:40:01,851 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_8630d934-15d3-4a37-8a2c-04051646751c/sv-benchmarks/c/eca-rers2012/Problem01_label17.c[19973,19986] [2022-11-22 02:40:01,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:40:01,876 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:40:01,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01 WrapperNode [2022-11-22 02:40:01,876 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:40:01,877 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:40:01,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:40:01,878 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:40:01,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:01,911 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:01,960 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 657 [2022-11-22 02:40:01,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:40:01,961 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:40:01,962 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:40:01,962 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:40:01,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:01,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:01,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:01,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:02,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:02,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:02,032 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:02,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:02,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:40:02,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:40:02,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:40:02,056 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:40:02,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (1/1) ... [2022-11-22 02:40:02,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:40:02,080 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:02,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:40:02,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:40:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:40:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:40:02,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:40:02,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:40:02,257 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:40:02,259 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:40:03,451 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:40:03,673 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:40:03,674 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:40:03,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:40:03 BoogieIcfgContainer [2022-11-22 02:40:03,677 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:40:03,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:40:03,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:40:03,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:40:03,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:40:01" (1/3) ... [2022-11-22 02:40:03,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a203e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:40:03, skipping insertion in model container [2022-11-22 02:40:03,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:40:01" (2/3) ... [2022-11-22 02:40:03,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a203e97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:40:03, skipping insertion in model container [2022-11-22 02:40:03,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:40:03" (3/3) ... [2022-11-22 02:40:03,687 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label17.c [2022-11-22 02:40:03,706 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:40:03,706 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:40:03,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:40:03,768 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;@6d9b2efb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:40:03,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:40:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-22 02:40:03,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:03,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:03,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash 379026055, now seen corresponding path program 1 times [2022-11-22 02:40:03,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:03,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815057773] [2022-11-22 02:40:03,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:03,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:03,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:04,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:04,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:04,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815057773] [2022-11-22 02:40:04,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815057773] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:04,300 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:04,300 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:04,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591228703] [2022-11-22 02:40:04,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:04,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:04,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:04,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:04,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:04,336 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.945945945945946) internal successors, (144), 75 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:04,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:04,842 INFO L93 Difference]: Finished difference Result 224 states and 428 transitions. [2022-11-22 02:40:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:04,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2022-11-22 02:40:04,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:04,859 INFO L225 Difference]: With dead ends: 224 [2022-11-22 02:40:04,859 INFO L226 Difference]: Without dead ends: 145 [2022-11-22 02:40:04,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:04,868 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 18 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:04,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 36 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:40:04,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-11-22 02:40:04,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-11-22 02:40:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.7569444444444444) internal successors, (253), 144 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:04,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 253 transitions. [2022-11-22 02:40:04,931 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 253 transitions. Word has length 71 [2022-11-22 02:40:04,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:04,932 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 253 transitions. [2022-11-22 02:40:04,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 2 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:04,932 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 253 transitions. [2022-11-22 02:40:04,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-22 02:40:04,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:04,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:04,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:40:04,939 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:04,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1189482305, now seen corresponding path program 1 times [2022-11-22 02:40:04,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:04,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040159312] [2022-11-22 02:40:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:04,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:05,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:05,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-22 02:40:05,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:05,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040159312] [2022-11-22 02:40:05,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040159312] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:05,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:05,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:05,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697950] [2022-11-22 02:40:05,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:05,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:05,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:05,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:05,290 INFO L87 Difference]: Start difference. First operand 145 states and 253 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 2 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:05,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:05,680 INFO L93 Difference]: Finished difference Result 431 states and 756 transitions. [2022-11-22 02:40:05,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:05,681 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2022-11-22 02:40:05,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:05,683 INFO L225 Difference]: With dead ends: 431 [2022-11-22 02:40:05,683 INFO L226 Difference]: Without dead ends: 287 [2022-11-22 02:40:05,684 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:05,685 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:05,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 27 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:40:05,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-11-22 02:40:05,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2022-11-22 02:40:05,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 1.632867132867133) internal successors, (467), 286 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:05,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 467 transitions. [2022-11-22 02:40:05,700 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 467 transitions. Word has length 75 [2022-11-22 02:40:05,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:05,701 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 467 transitions. [2022-11-22 02:40:05,701 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:05,701 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 467 transitions. [2022-11-22 02:40:05,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 02:40:05,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:05,704 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:05,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:40:05,704 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:05,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:05,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1933825035, now seen corresponding path program 1 times [2022-11-22 02:40:05,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:05,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89851969] [2022-11-22 02:40:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:05,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:05,841 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:40:05,842 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:05,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89851969] [2022-11-22 02:40:05,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89851969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:05,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:05,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:05,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167645912] [2022-11-22 02:40:05,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:05,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:05,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:05,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:05,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:05,845 INFO L87 Difference]: Start difference. First operand 287 states and 467 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:06,206 INFO L93 Difference]: Finished difference Result 715 states and 1184 transitions. [2022-11-22 02:40:06,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:06,207 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2022-11-22 02:40:06,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:06,209 INFO L225 Difference]: With dead ends: 715 [2022-11-22 02:40:06,209 INFO L226 Difference]: Without dead ends: 429 [2022-11-22 02:40:06,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:06,211 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:06,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 26 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:06,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-11-22 02:40:06,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 358. [2022-11-22 02:40:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6442577030812324) internal successors, (587), 357 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 587 transitions. [2022-11-22 02:40:06,226 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 587 transitions. Word has length 105 [2022-11-22 02:40:06,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:06,227 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 587 transitions. [2022-11-22 02:40:06,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 2 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,227 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 587 transitions. [2022-11-22 02:40:06,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-22 02:40:06,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:06,230 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:06,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:40:06,231 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:06,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:06,231 INFO L85 PathProgramCache]: Analyzing trace with hash 218746559, now seen corresponding path program 1 times [2022-11-22 02:40:06,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:06,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215004110] [2022-11-22 02:40:06,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:06,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:06,503 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-22 02:40:06,503 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:06,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215004110] [2022-11-22 02:40:06,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215004110] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:06,505 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:06,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:06,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120480809] [2022-11-22 02:40:06,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:06,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:06,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:06,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:06,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:06,510 INFO L87 Difference]: Start difference. First operand 358 states and 587 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:06,809 INFO L93 Difference]: Finished difference Result 715 states and 1173 transitions. [2022-11-22 02:40:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:06,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 109 [2022-11-22 02:40:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:06,811 INFO L225 Difference]: With dead ends: 715 [2022-11-22 02:40:06,811 INFO L226 Difference]: Without dead ends: 358 [2022-11-22 02:40:06,812 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:06,813 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 72 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:06,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 58 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:06,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-11-22 02:40:06,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 358. [2022-11-22 02:40:06,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 357 states have (on average 1.6274509803921569) internal successors, (581), 357 states have internal predecessors, (581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 581 transitions. [2022-11-22 02:40:06,835 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 581 transitions. Word has length 109 [2022-11-22 02:40:06,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:06,835 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 581 transitions. [2022-11-22 02:40:06,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 2 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:06,835 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 581 transitions. [2022-11-22 02:40:06,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-22 02:40:06,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:06,845 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:06,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:40:06,847 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:06,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:06,848 INFO L85 PathProgramCache]: Analyzing trace with hash 674880247, now seen corresponding path program 1 times [2022-11-22 02:40:06,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:06,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54913391] [2022-11-22 02:40:06,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:06,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:07,099 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-22 02:40:07,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54913391] [2022-11-22 02:40:07,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54913391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:07,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:07,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:07,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119810565] [2022-11-22 02:40:07,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:07,103 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:07,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:07,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:07,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:07,104 INFO L87 Difference]: Start difference. First operand 358 states and 581 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 2 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:07,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:07,456 INFO L93 Difference]: Finished difference Result 857 states and 1369 transitions. [2022-11-22 02:40:07,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:07,457 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2022-11-22 02:40:07,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:07,459 INFO L225 Difference]: With dead ends: 857 [2022-11-22 02:40:07,459 INFO L226 Difference]: Without dead ends: 500 [2022-11-22 02:40:07,460 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:07,461 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 75 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:07,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 50 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:07,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2022-11-22 02:40:07,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 500. [2022-11-22 02:40:07,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 500 states, 499 states have (on average 1.5210420841683367) internal successors, (759), 499 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 759 transitions. [2022-11-22 02:40:07,495 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 759 transitions. Word has length 113 [2022-11-22 02:40:07,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:07,496 INFO L495 AbstractCegarLoop]: Abstraction has 500 states and 759 transitions. [2022-11-22 02:40:07,496 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 759 transitions. [2022-11-22 02:40:07,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-22 02:40:07,498 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:07,498 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:07,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:40:07,498 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:07,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:07,499 INFO L85 PathProgramCache]: Analyzing trace with hash -692381003, now seen corresponding path program 1 times [2022-11-22 02:40:07,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:07,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535410646] [2022-11-22 02:40:07,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:07,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-22 02:40:07,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:07,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535410646] [2022-11-22 02:40:07,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535410646] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:07,643 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:07,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:07,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433221077] [2022-11-22 02:40:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:07,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:07,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:07,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:07,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:07,645 INFO L87 Difference]: Start difference. First operand 500 states and 759 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:08,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:08,007 INFO L93 Difference]: Finished difference Result 1354 states and 2016 transitions. [2022-11-22 02:40:08,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:08,008 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2022-11-22 02:40:08,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:08,011 INFO L225 Difference]: With dead ends: 1354 [2022-11-22 02:40:08,011 INFO L226 Difference]: Without dead ends: 855 [2022-11-22 02:40:08,012 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 [2022-11-22 02:40:08,013 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:08,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 19 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:08,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 855 states. [2022-11-22 02:40:08,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 855 to 642. [2022-11-22 02:40:08,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 1.4804992199687987) internal successors, (949), 641 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:08,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 949 transitions. [2022-11-22 02:40:08,031 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 949 transitions. Word has length 122 [2022-11-22 02:40:08,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:08,032 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 949 transitions. [2022-11-22 02:40:08,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:08,032 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 949 transitions. [2022-11-22 02:40:08,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-11-22 02:40:08,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:08,034 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:08,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:40:08,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:08,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:08,035 INFO L85 PathProgramCache]: Analyzing trace with hash 240375483, now seen corresponding path program 1 times [2022-11-22 02:40:08,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:08,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161798658] [2022-11-22 02:40:08,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:08,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:08,264 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-22 02:40:08,264 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:08,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161798658] [2022-11-22 02:40:08,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161798658] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:08,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:08,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:40:08,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94109998] [2022-11-22 02:40:08,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:08,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:08,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:08,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:08,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:08,267 INFO L87 Difference]: Start difference. First operand 642 states and 949 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:08,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:08,579 INFO L93 Difference]: Finished difference Result 1354 states and 2010 transitions. [2022-11-22 02:40:08,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:08,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-11-22 02:40:08,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:08,582 INFO L225 Difference]: With dead ends: 1354 [2022-11-22 02:40:08,582 INFO L226 Difference]: Without dead ends: 713 [2022-11-22 02:40:08,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:08,584 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 48 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:08,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 58 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:08,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2022-11-22 02:40:08,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 713. [2022-11-22 02:40:08,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 1.4578651685393258) internal successors, (1038), 712 states have internal predecessors, (1038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:08,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1038 transitions. [2022-11-22 02:40:08,600 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1038 transitions. Word has length 138 [2022-11-22 02:40:08,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:08,601 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1038 transitions. [2022-11-22 02:40:08,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:08,601 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1038 transitions. [2022-11-22 02:40:08,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-22 02:40:08,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:08,604 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:08,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:40:08,604 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:08,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:08,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1229086565, now seen corresponding path program 1 times [2022-11-22 02:40:08,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:08,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351534532] [2022-11-22 02:40:08,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:08,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:08,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:08,905 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-22 02:40:08,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:08,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351534532] [2022-11-22 02:40:08,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351534532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:08,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:08,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:08,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247686846] [2022-11-22 02:40:08,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:08,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:40:08,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:08,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:40:08,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:40:08,908 INFO L87 Difference]: Start difference. First operand 713 states and 1038 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:09,405 INFO L93 Difference]: Finished difference Result 1638 states and 2336 transitions. [2022-11-22 02:40:09,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:40:09,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2022-11-22 02:40:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:09,409 INFO L225 Difference]: With dead ends: 1638 [2022-11-22 02:40:09,409 INFO L226 Difference]: Without dead ends: 926 [2022-11-22 02:40:09,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:40:09,410 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 153 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:09,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 54 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:40:09,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-22 02:40:09,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 855. [2022-11-22 02:40:09,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3887587822014051) internal successors, (1186), 854 states have internal predecessors, (1186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:09,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1186 transitions. [2022-11-22 02:40:09,438 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1186 transitions. Word has length 154 [2022-11-22 02:40:09,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:09,444 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1186 transitions. [2022-11-22 02:40:09,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1186 transitions. [2022-11-22 02:40:09,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-22 02:40:09,447 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:09,448 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:09,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:40:09,448 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash -2145597240, now seen corresponding path program 1 times [2022-11-22 02:40:09,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:09,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625440470] [2022-11-22 02:40:09,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:09,747 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-22 02:40:09,747 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:09,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625440470] [2022-11-22 02:40:09,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625440470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:09,748 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:09,748 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:40:09,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979605298] [2022-11-22 02:40:09,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:09,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:40:09,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:09,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:40:09,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:40:09,751 INFO L87 Difference]: Start difference. First operand 855 states and 1186 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:10,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:10,286 INFO L93 Difference]: Finished difference Result 1922 states and 2650 transitions. [2022-11-22 02:40:10,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 02:40:10,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 171 [2022-11-22 02:40:10,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:10,290 INFO L225 Difference]: With dead ends: 1922 [2022-11-22 02:40:10,291 INFO L226 Difference]: Without dead ends: 1068 [2022-11-22 02:40:10,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:40:10,292 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 98 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 525 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:10,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 36 Invalid, 525 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:40:10,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1068 states. [2022-11-22 02:40:10,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1068 to 855. [2022-11-22 02:40:10,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.3044496487119437) internal successors, (1114), 854 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:10,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1114 transitions. [2022-11-22 02:40:10,315 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1114 transitions. Word has length 171 [2022-11-22 02:40:10,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:10,315 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1114 transitions. [2022-11-22 02:40:10,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:10,316 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1114 transitions. [2022-11-22 02:40:10,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-22 02:40:10,318 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:10,318 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:40:10,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:40:10,319 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:10,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:10,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1532629065, now seen corresponding path program 1 times [2022-11-22 02:40:10,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:10,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119603688] [2022-11-22 02:40:10,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:10,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:10,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:10,907 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 63 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:40:10,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:10,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119603688] [2022-11-22 02:40:10,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119603688] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:40:10,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729925089] [2022-11-22 02:40:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:10,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:10,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:10,913 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:40:10,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:40:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:11,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:40:11,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:11,477 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-11-22 02:40:11,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:40:11,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [729925089] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:11,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:40:11,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2022-11-22 02:40:11,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067862084] [2022-11-22 02:40:11,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:11,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:11,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:40:11,480 INFO L87 Difference]: Start difference. First operand 855 states and 1114 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:11,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:11,792 INFO L93 Difference]: Finished difference Result 1425 states and 1840 transitions. [2022-11-22 02:40:11,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:11,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 175 [2022-11-22 02:40:11,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:11,798 INFO L225 Difference]: With dead ends: 1425 [2022-11-22 02:40:11,799 INFO L226 Difference]: Without dead ends: 1423 [2022-11-22 02:40:11,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:40:11,800 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:11,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 27 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:11,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2022-11-22 02:40:11,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1352. [2022-11-22 02:40:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1351 states have (on average 1.2901554404145077) internal successors, (1743), 1351 states have internal predecessors, (1743), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:11,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 1743 transitions. [2022-11-22 02:40:11,833 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 1743 transitions. Word has length 175 [2022-11-22 02:40:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:11,834 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 1743 transitions. [2022-11-22 02:40:11,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 2 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 1743 transitions. [2022-11-22 02:40:11,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-22 02:40:11,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:11,838 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:40:11,844 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:40:12,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-22 02:40:12,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:12,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:12,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1856417084, now seen corresponding path program 1 times [2022-11-22 02:40:12,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:12,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602913499] [2022-11-22 02:40:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:12,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:12,201 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-22 02:40:12,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:12,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602913499] [2022-11-22 02:40:12,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602913499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:12,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:12,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:12,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091111811] [2022-11-22 02:40:12,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:12,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:12,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:12,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:12,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:12,208 INFO L87 Difference]: Start difference. First operand 1352 states and 1743 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:12,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:12,555 INFO L93 Difference]: Finished difference Result 2987 states and 3842 transitions. [2022-11-22 02:40:12,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:12,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 182 [2022-11-22 02:40:12,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:12,560 INFO L225 Difference]: With dead ends: 2987 [2022-11-22 02:40:12,560 INFO L226 Difference]: Without dead ends: 1281 [2022-11-22 02:40:12,561 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 [2022-11-22 02:40:12,562 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 75 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:12,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 126 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:12,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2022-11-22 02:40:12,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 855. [2022-11-22 02:40:12,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.1662763466042154) internal successors, (996), 854 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:12,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 996 transitions. [2022-11-22 02:40:12,584 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 996 transitions. Word has length 182 [2022-11-22 02:40:12,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:12,584 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 996 transitions. [2022-11-22 02:40:12,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:12,585 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 996 transitions. [2022-11-22 02:40:12,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-22 02:40:12,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:12,588 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-11-22 02:40:12,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:40:12,589 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:12,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:12,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1529632920, now seen corresponding path program 1 times [2022-11-22 02:40:12,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:12,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422372573] [2022-11-22 02:40:12,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:12,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:12,779 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 219 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-22 02:40:12,780 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:12,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422372573] [2022-11-22 02:40:12,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422372573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:12,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:40:12,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:40:12,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473794627] [2022-11-22 02:40:12,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:12,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:12,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:12,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:12,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:40:12,782 INFO L87 Difference]: Start difference. First operand 855 states and 996 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:13,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:13,058 INFO L93 Difference]: Finished difference Result 1851 states and 2162 transitions. [2022-11-22 02:40:13,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:13,058 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 233 [2022-11-22 02:40:13,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:13,062 INFO L225 Difference]: With dead ends: 1851 [2022-11-22 02:40:13,062 INFO L226 Difference]: Without dead ends: 997 [2022-11-22 02:40:13,063 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 [2022-11-22 02:40:13,063 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 26 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:13,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 111 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:13,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-22 02:40:13,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2022-11-22 02:40:13,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 997 states, 996 states have (on average 1.1485943775100402) internal successors, (1144), 996 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:13,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1144 transitions. [2022-11-22 02:40:13,086 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1144 transitions. Word has length 233 [2022-11-22 02:40:13,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:13,086 INFO L495 AbstractCegarLoop]: Abstraction has 997 states and 1144 transitions. [2022-11-22 02:40:13,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:13,087 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1144 transitions. [2022-11-22 02:40:13,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-11-22 02:40:13,091 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:40:13,091 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:13,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:40:13,092 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:40:13,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:40:13,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1886816303, now seen corresponding path program 1 times [2022-11-22 02:40:13,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:40:13,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158307399] [2022-11-22 02:40:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:13,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:40:13,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:13,778 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 182 proven. 103 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-11-22 02:40:13,778 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:40:13,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158307399] [2022-11-22 02:40:13,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158307399] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:40:13,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140041868] [2022-11-22 02:40:13,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:40:13,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:13,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:40:13,782 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:40:13,818 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:40:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:40:13,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-22 02:40:13,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:40:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 360 backedges. 183 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-22 02:40:14,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:40:14,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140041868] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:40:14,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:40:14,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-11-22 02:40:14,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763953952] [2022-11-22 02:40:14,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:40:14,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:40:14,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:40:14,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:40:14,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:40:14,119 INFO L87 Difference]: Start difference. First operand 997 states and 1144 transitions. Second operand has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:14,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:40:14,403 INFO L93 Difference]: Finished difference Result 1991 states and 2286 transitions. [2022-11-22 02:40:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:40:14,404 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 255 [2022-11-22 02:40:14,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:40:14,405 INFO L225 Difference]: With dead ends: 1991 [2022-11-22 02:40:14,405 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:40:14,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:40:14,407 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 5 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:40:14,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 94 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:40:14,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:40:14,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:40:14,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:14,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:40:14,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 255 [2022-11-22 02:40:14,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:40:14,408 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:40:14,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.0) internal successors, (144), 3 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:40:14,409 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:40:14,409 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:40:14,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-22 02:40:14,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:40:14,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:40:14,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L102(lines 102 400) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L598(line 598) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L334(lines 334 400) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L533-1(lines 40 585) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L302(lines 302 400) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L170(lines 170 400) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L534(line 534) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L204(lines 204 400) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L72(lines 72 400) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L271(lines 271 400) no Hoare annotation was computed. [2022-11-22 02:40:15,662 INFO L899 garLoopResultBuilder]: For program point L139(lines 139 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L371(lines 371 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L107(lines 107 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L339(lines 339 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L207(lines 207 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L75(lines 75 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L373(lines 373 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L241(lines 241 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L175(lines 175 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L275(lines 275 400) no Hoare annotation was computed. [2022-11-22 02:40:15,663 INFO L899 garLoopResultBuilder]: For program point L375(lines 375 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L309(lines 309 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L45(lines 45 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L343(lines 343 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L112(lines 112 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L278(lines 278 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L146(lines 146 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L213(lines 213 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L82(lines 82 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L347(lines 347 400) no Hoare annotation was computed. [2022-11-22 02:40:15,664 INFO L899 garLoopResultBuilder]: For program point L248(lines 248 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L183(lines 183 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L150(lines 150 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L382(lines 382 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L316(lines 316 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L283(lines 283 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L118(lines 118 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L218(lines 218 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L53(lines 53 400) no Hoare annotation was computed. [2022-11-22 02:40:15,665 INFO L899 garLoopResultBuilder]: For program point L154(lines 154 400) no Hoare annotation was computed. [2022-11-22 02:40:15,666 INFO L895 garLoopResultBuilder]: At program point L584(lines 40 585) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse5 (= ~a16~0 6)) (.cse4 (<= 15 ~a8~0)) (.cse0 (not .cse8)) (.cse6 (<= ~a8~0 13)) (.cse3 (<= ~a16~0 5)) (.cse9 (<= ~a17~0 0)) (.cse7 (<= ~a7~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse4) (and .cse6 .cse2 .cse3) (and .cse7 .cse6 .cse1 .cse8) (and .cse6 .cse9 .cse8) (and .cse6 .cse1 .cse2 .cse8) (and .cse5 .cse9 .cse1 .cse4) (and .cse0 .cse6 .cse1 .cse3) (and .cse9 .cse1 .cse3) (and .cse9 .cse1 .cse8) (and .cse7 .cse1 .cse2 .cse8)))) [2022-11-22 02:40:15,666 INFO L899 garLoopResultBuilder]: For program point L188(lines 188 400) no Hoare annotation was computed. [2022-11-22 02:40:15,666 INFO L899 garLoopResultBuilder]: For program point L387(lines 387 400) no Hoare annotation was computed. [2022-11-22 02:40:15,666 INFO L899 garLoopResultBuilder]: For program point L288(lines 288 400) no Hoare annotation was computed. [2022-11-22 02:40:15,667 INFO L899 garLoopResultBuilder]: For program point L255(lines 255 400) no Hoare annotation was computed. [2022-11-22 02:40:15,667 INFO L899 garLoopResultBuilder]: For program point L90(lines 90 400) no Hoare annotation was computed. [2022-11-22 02:40:15,667 INFO L899 garLoopResultBuilder]: For program point L355(lines 355 400) no Hoare annotation was computed. [2022-11-22 02:40:15,667 INFO L899 garLoopResultBuilder]: For program point L322(lines 322 400) no Hoare annotation was computed. [2022-11-22 02:40:15,667 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-22 02:40:15,667 INFO L899 garLoopResultBuilder]: For program point L124(lines 124 400) no Hoare annotation was computed. [2022-11-22 02:40:15,668 INFO L902 garLoopResultBuilder]: At program point L587(lines 587 604) the Hoare annotation is: true [2022-11-22 02:40:15,668 INFO L899 garLoopResultBuilder]: For program point L224(lines 224 400) no Hoare annotation was computed. [2022-11-22 02:40:15,668 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 400) no Hoare annotation was computed. [2022-11-22 02:40:15,668 INFO L899 garLoopResultBuilder]: For program point L59(lines 59 400) no Hoare annotation was computed. [2022-11-22 02:40:15,668 INFO L899 garLoopResultBuilder]: For program point L94(lines 94 400) no Hoare annotation was computed. [2022-11-22 02:40:15,668 INFO L899 garLoopResultBuilder]: For program point L392(lines 392 400) no Hoare annotation was computed. [2022-11-22 02:40:15,668 INFO L899 garLoopResultBuilder]: For program point L326(lines 326 400) no Hoare annotation was computed. [2022-11-22 02:40:15,669 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 400) no Hoare annotation was computed. [2022-11-22 02:40:15,669 INFO L899 garLoopResultBuilder]: For program point L228(lines 228 400) no Hoare annotation was computed. [2022-11-22 02:40:15,669 INFO L899 garLoopResultBuilder]: For program point L162(lines 162 400) no Hoare annotation was computed. [2022-11-22 02:40:15,669 INFO L899 garLoopResultBuilder]: For program point L129(lines 129 400) no Hoare annotation was computed. [2022-11-22 02:40:15,669 INFO L899 garLoopResultBuilder]: For program point L328(lines 328 400) no Hoare annotation was computed. [2022-11-22 02:40:15,669 INFO L899 garLoopResultBuilder]: For program point L196(lines 196 400) no Hoare annotation was computed. [2022-11-22 02:40:15,669 INFO L899 garLoopResultBuilder]: For program point L64(lines 64 400) no Hoare annotation was computed. [2022-11-22 02:40:15,670 INFO L895 garLoopResultBuilder]: At program point L593-2(lines 593 603) the Hoare annotation is: (let ((.cse8 (= ~a20~0 1))) (let ((.cse5 (= ~a16~0 6)) (.cse4 (<= 15 ~a8~0)) (.cse0 (not .cse8)) (.cse6 (<= ~a8~0 13)) (.cse3 (<= ~a16~0 5)) (.cse9 (<= ~a17~0 0)) (.cse7 (<= ~a7~0 0)) (.cse1 (= ~a21~0 1)) (.cse2 (= ~a17~0 1))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4) (and .cse5 .cse1 .cse2 .cse4) (and .cse6 .cse2 .cse3) (and .cse7 .cse6 .cse1 .cse8) (and .cse6 .cse9 .cse8) (and .cse6 .cse1 .cse2 .cse8) (and .cse5 .cse9 .cse1 .cse4) (and .cse0 .cse6 .cse1 .cse3) (and .cse9 .cse1 .cse3) (and .cse9 .cse1 .cse8) (and .cse7 .cse1 .cse2 .cse8)))) [2022-11-22 02:40:15,670 INFO L899 garLoopResultBuilder]: For program point L296(lines 296 400) no Hoare annotation was computed. [2022-11-22 02:40:15,670 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 534) no Hoare annotation was computed. [2022-11-22 02:40:15,670 INFO L899 garLoopResultBuilder]: For program point L363(lines 363 400) no Hoare annotation was computed. [2022-11-22 02:40:15,670 INFO L899 garLoopResultBuilder]: For program point L199(lines 199 400) no Hoare annotation was computed. [2022-11-22 02:40:15,671 INFO L899 garLoopResultBuilder]: For program point L530-1(lines 40 585) no Hoare annotation was computed. [2022-11-22 02:40:15,671 INFO L899 garLoopResultBuilder]: For program point L365(lines 365 400) no Hoare annotation was computed. [2022-11-22 02:40:15,671 INFO L899 garLoopResultBuilder]: For program point L266(lines 266 400) no Hoare annotation was computed. [2022-11-22 02:40:15,671 INFO L899 garLoopResultBuilder]: For program point L233(lines 233 400) no Hoare annotation was computed. [2022-11-22 02:40:15,671 INFO L899 garLoopResultBuilder]: For program point L134(lines 134 400) no Hoare annotation was computed. [2022-11-22 02:40:15,674 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:40:15,676 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:40:15,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:40:15 BoogieIcfgContainer [2022-11-22 02:40:15,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:40:15,711 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:40:15,711 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:40:15,712 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:40:15,712 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:40:03" (3/4) ... [2022-11-22 02:40:15,715 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:40:15,740 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 110 nodes and edges [2022-11-22 02:40:15,742 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2022-11-22 02:40:15,743 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-22 02:40:15,743 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:40:15,873 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:40:15,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:40:15,874 INFO L158 Benchmark]: Toolchain (without parser) took 14663.78ms. Allocated memory was 163.6MB in the beginning and 343.9MB in the end (delta: 180.4MB). Free memory was 124.7MB in the beginning and 186.1MB in the end (delta: -61.4MB). Peak memory consumption was 119.6MB. Max. memory is 16.1GB. [2022-11-22 02:40:15,874 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:40:15,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 664.91ms. Allocated memory is still 163.6MB. Free memory was 124.7MB in the beginning and 111.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 02:40:15,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.49ms. Allocated memory is still 163.6MB. Free memory was 111.2MB in the beginning and 105.7MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-22 02:40:15,876 INFO L158 Benchmark]: Boogie Preprocessor took 93.23ms. Allocated memory is still 163.6MB. Free memory was 105.7MB in the beginning and 100.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:40:15,876 INFO L158 Benchmark]: RCFGBuilder took 1621.40ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 100.8MB in the beginning and 101.9MB in the end (delta: -1.1MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. [2022-11-22 02:40:15,877 INFO L158 Benchmark]: TraceAbstraction took 12030.96ms. Allocated memory was 197.1MB in the beginning and 343.9MB in the end (delta: 146.8MB). Free memory was 100.8MB in the beginning and 196.9MB in the end (delta: -96.0MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. [2022-11-22 02:40:15,877 INFO L158 Benchmark]: Witness Printer took 162.23ms. Allocated memory is still 343.9MB. Free memory was 196.9MB in the beginning and 186.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-22 02:40:15,883 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 127.9MB. Free memory is still 95.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 664.91ms. Allocated memory is still 163.6MB. Free memory was 124.7MB in the beginning and 111.2MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.49ms. Allocated memory is still 163.6MB. Free memory was 111.2MB in the beginning and 105.7MB in the end (delta: 5.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 93.23ms. Allocated memory is still 163.6MB. Free memory was 105.7MB in the beginning and 100.8MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1621.40ms. Allocated memory was 163.6MB in the beginning and 197.1MB in the end (delta: 33.6MB). Free memory was 100.8MB in the beginning and 101.9MB in the end (delta: -1.1MB). Peak memory consumption was 76.4MB. Max. memory is 16.1GB. * TraceAbstraction took 12030.96ms. Allocated memory was 197.1MB in the beginning and 343.9MB in the end (delta: 146.8MB). Free memory was 100.8MB in the beginning and 196.9MB in the end (delta: -96.0MB). Peak memory consumption was 107.7MB. Max. memory is 16.1GB. * Witness Printer took 162.23ms. Allocated memory is still 343.9MB. Free memory was 196.9MB in the beginning and 186.1MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 534]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 11.9s, OverallIterations: 13, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 776 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 776 mSDsluCounter, 722 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 54 mSDsCounter, 761 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3053 IncrementalHoareTripleChecker+Invalid, 3814 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 761 mSolverCounterUnsat, 668 mSDtfsCounter, 3053 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 466 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1352occurred in iteration=10, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 13 MinimizatonAttempts, 1065 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 275 HoareAnnotationTreeSize, 3 FomulaSimplifications, 136 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 3 FomulaSimplificationsInter, 3248 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 2333 NumberOfCodeBlocks, 2333 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 2318 ConstructedInterpolants, 0 QuantifiedInterpolants, 9197 SizeOfPredicates, 0 NumberOfNonLiveVariables, 883 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 15 InterpolantComputations, 13 PerfectInterpolantSequences, 1979/2174 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 593]: Loop Invariant Derived loop invariant: (((((((((((((!(a20 == 1) && a21 == 1) && a17 == 1) && a16 <= 5) && 15 <= a8) || (((a16 == 6 && a21 == 1) && a17 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 == 1) && a16 <= 5)) || (((a7 <= 0 && a8 <= 13) && a21 == 1) && a20 == 1)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a16 == 6 && a17 <= 0) && a21 == 1) && 15 <= a8)) || (((!(a20 == 1) && a8 <= 13) && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1) - InvariantResult [Line: 587]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: (((((((((((((!(a20 == 1) && a21 == 1) && a17 == 1) && a16 <= 5) && 15 <= a8) || (((a16 == 6 && a21 == 1) && a17 == 1) && 15 <= a8)) || ((a8 <= 13 && a17 == 1) && a16 <= 5)) || (((a7 <= 0 && a8 <= 13) && a21 == 1) && a20 == 1)) || ((a8 <= 13 && a17 <= 0) && a20 == 1)) || (((a8 <= 13 && a21 == 1) && a17 == 1) && a20 == 1)) || (((a16 == 6 && a17 <= 0) && a21 == 1) && 15 <= a8)) || (((!(a20 == 1) && a8 <= 13) && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a16 <= 5)) || ((a17 <= 0 && a21 == 1) && a20 == 1)) || (((a7 <= 0 && a21 == 1) && a17 == 1) && a20 == 1) RESULT: Ultimate proved your program to be correct! [2022-11-22 02:40:15,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8630d934-15d3-4a37-8a2c-04051646751c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE