./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 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_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW --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 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 --- 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-4e7fbc6 [2022-11-23 14:16:25,478 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:16:25,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:16:25,503 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:16:25,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:16:25,505 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:16:25,507 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:16:25,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:16:25,510 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:16:25,511 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:16:25,512 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:16:25,514 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:16:25,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:16:25,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:16:25,516 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:16:25,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:16:25,519 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:16:25,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:16:25,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:16:25,524 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:16:25,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:16:25,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:16:25,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:16:25,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:16:25,533 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:16:25,533 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:16:25,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:16:25,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:16:25,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:16:25,537 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:16:25,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:16:25,538 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:16:25,539 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:16:25,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:16:25,541 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:16:25,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:16:25,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:16:25,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:16:25,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:16:25,545 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:16:25,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:16:25,547 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:16:25,572 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:16:25,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:16:25,573 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:16:25,573 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:16:25,574 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:16:25,574 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:16:25,575 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:16:25,575 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:16:25,575 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:16:25,575 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:16:25,576 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:16:25,576 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:16:25,576 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:16:25,576 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:16:25,577 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:16:25,577 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:16:25,577 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:16:25,577 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:16:25,578 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:16:25,579 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:16:25,579 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:16:25,579 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:16:25,579 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:16:25,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:16:25,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:16:25,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:16:25,580 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:16:25,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:16:25,581 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:16:25,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:16:25,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:16:25,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:16:25,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:16:25,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:16:25,582 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:16:25,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:16:25,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:16:25,583 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:16:25,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:16:25,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:16:25,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:16:25,584 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_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97832baecac12bd55b66fbc3c6c38a25db85e9dc70cfa8f34b5e7a9e59086f06 [2022-11-23 14:16:25,831 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:16:25,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:16:25,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:16:25,866 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:16:25,867 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:16:25,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-23 14:16:29,016 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:16:29,233 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:16:29,245 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/sv-benchmarks/c/weaver/chl-node-subst.wvr.c [2022-11-23 14:16:29,253 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/data/d18f452f8/cc6405852779465383294ba794561e5c/FLAGb0c83ce5f [2022-11-23 14:16:29,274 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/data/d18f452f8/cc6405852779465383294ba794561e5c [2022-11-23 14:16:29,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:16:29,284 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:16:29,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:16:29,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:16:29,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:16:29,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,294 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e61d5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29, skipping insertion in model container [2022-11-23 14:16:29,295 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:16:29,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:16:29,518 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_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-23 14:16:29,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:16:29,544 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:16:29,576 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_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/sv-benchmarks/c/weaver/chl-node-subst.wvr.c[3996,4009] [2022-11-23 14:16:29,583 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:16:29,598 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:16:29,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29 WrapperNode [2022-11-23 14:16:29,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:16:29,601 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:16:29,607 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:16:29,607 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:16:29,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,687 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 413 [2022-11-23 14:16:29,689 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:16:29,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:16:29,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:16:29,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:16:29,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,751 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,772 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,774 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:16:29,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:16:29,792 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:16:29,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:16:29,793 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (1/1) ... [2022-11-23 14:16:29,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:16:29,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:16:29,834 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:16:29,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:16:29,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:16:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:16:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:16:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:16:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-23 14:16:29,873 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-23 14:16:29,873 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-23 14:16:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-23 14:16:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-23 14:16:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-23 14:16:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:16:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:16:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:16:29,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:16:29,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:16:29,876 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-23 14:16:30,017 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:16:30,037 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:16:30,867 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:16:30,882 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:16:30,882 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-23 14:16:30,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:30 BoogieIcfgContainer [2022-11-23 14:16:30,885 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:16:30,887 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:16:30,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:16:30,891 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:16:30,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:16:29" (1/3) ... [2022-11-23 14:16:30,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:30, skipping insertion in model container [2022-11-23 14:16:30,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:16:29" (2/3) ... [2022-11-23 14:16:30,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602ee08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:16:30, skipping insertion in model container [2022-11-23 14:16:30,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:16:30" (3/3) ... [2022-11-23 14:16:30,895 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2022-11-23 14:16:30,905 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-23 14:16:30,916 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:16:30,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:16:30,917 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-23 14:16:31,037 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-23 14:16:31,082 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-23 14:16:31,096 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 513 places, 544 transitions, 1112 flow [2022-11-23 14:16:31,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 513 places, 544 transitions, 1112 flow [2022-11-23 14:16:31,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 544 transitions, 1112 flow [2022-11-23 14:16:31,376 INFO L130 PetriNetUnfolder]: 41/541 cut-off events. [2022-11-23 14:16:31,377 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-23 14:16:31,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 541 events. 41/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 690 event pairs, 0 based on Foata normal form. 0/499 useless extension candidates. Maximal degree in co-relation 459. Up to 2 conditions per place. [2022-11-23 14:16:31,408 INFO L119 LiptonReduction]: Number of co-enabled transitions 21384 [2022-11-23 14:16:57,239 INFO L134 LiptonReduction]: Checked pairs total: 23101 [2022-11-23 14:16:57,240 INFO L136 LiptonReduction]: Total number of compositions: 617 [2022-11-23 14:16:57,254 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 46 places, 46 transitions, 116 flow [2022-11-23 14:16:57,364 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:57,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:16:57,415 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;@62a4de87, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:16:57,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-23 14:16:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:57,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-23 14:16:57,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:16:57,449 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] [2022-11-23 14:16:57,452 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:16:57,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:16:57,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1233236341, now seen corresponding path program 1 times [2022-11-23 14:16:57,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:16:57,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814525200] [2022-11-23 14:16:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:57,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:16:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:16:58,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:16:58,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:16:58,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814525200] [2022-11-23 14:16:58,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814525200] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:16:58,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:16:58,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:16:58,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513514727] [2022-11-23 14:16:58,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:16:58,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:16:58,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:16:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:16:58,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:16:58,113 INFO L87 Difference]: Start difference. First operand has 350 states, 349 states have (on average 3.128939828080229) internal successors, (1092), 349 states have internal predecessors, (1092), 0 states have call successors, (0), 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 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:58,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:16:58,351 INFO L93 Difference]: Finished difference Result 396 states and 1234 transitions. [2022-11-23 14:16:58,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:16:58,354 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 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 28 [2022-11-23 14:16:58,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:16:58,371 INFO L225 Difference]: With dead ends: 396 [2022-11-23 14:16:58,372 INFO L226 Difference]: Without dead ends: 396 [2022-11-23 14:16:58,373 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 [2022-11-23 14:16:58,376 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:16:58,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:16:58,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-23 14:16:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2022-11-23 14:16:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 395 states have (on average 3.1240506329113926) internal successors, (1234), 395 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:58,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 1234 transitions. [2022-11-23 14:16:58,462 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 1234 transitions. Word has length 28 [2022-11-23 14:16:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:16:58,464 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 1234 transitions. [2022-11-23 14:16:58,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:58,465 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 1234 transitions. [2022-11-23 14:16:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-23 14:16:58,469 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:16:58,469 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] [2022-11-23 14:16:58,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:16:58,470 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:16:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:16:58,471 INFO L85 PathProgramCache]: Analyzing trace with hash 598560252, now seen corresponding path program 1 times [2022-11-23 14:16:58,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:16:58,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520133601] [2022-11-23 14:16:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:58,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:16:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:16:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:16:58,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:16:58,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520133601] [2022-11-23 14:16:58,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520133601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:16:58,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:16:58,767 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:16:58,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957756006] [2022-11-23 14:16:58,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:16:58,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:16:58,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:16:58,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:16:58,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:16:58,775 INFO L87 Difference]: Start difference. First operand 396 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:58,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:16:58,991 INFO L93 Difference]: Finished difference Result 446 states and 1388 transitions. [2022-11-23 14:16:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:16:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-11-23 14:16:58,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:16:59,000 INFO L225 Difference]: With dead ends: 446 [2022-11-23 14:16:59,006 INFO L226 Difference]: Without dead ends: 446 [2022-11-23 14:16:59,007 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 [2022-11-23 14:16:59,010 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:16:59,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:16:59,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-11-23 14:16:59,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2022-11-23 14:16:59,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.1191011235955055) internal successors, (1388), 445 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:59,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1388 transitions. [2022-11-23 14:16:59,077 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1388 transitions. Word has length 29 [2022-11-23 14:16:59,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:16:59,077 INFO L495 AbstractCegarLoop]: Abstraction has 446 states and 1388 transitions. [2022-11-23 14:16:59,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:59,078 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1388 transitions. [2022-11-23 14:16:59,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-23 14:16:59,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:16:59,086 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] [2022-11-23 14:16:59,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:16:59,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:16:59,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:16:59,090 INFO L85 PathProgramCache]: Analyzing trace with hash -563157914, now seen corresponding path program 1 times [2022-11-23 14:16:59,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:16:59,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642523195] [2022-11-23 14:16:59,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:59,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:16:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:16:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:16:59,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:16:59,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642523195] [2022-11-23 14:16:59,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642523195] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:16:59,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:16:59,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:16:59,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949113017] [2022-11-23 14:16:59,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:16:59,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:16:59,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:16:59,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:16:59,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:16:59,526 INFO L87 Difference]: Start difference. First operand 446 states and 1388 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:59,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:16:59,678 INFO L93 Difference]: Finished difference Result 447 states and 1389 transitions. [2022-11-23 14:16:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:16:59,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2022-11-23 14:16:59,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:16:59,684 INFO L225 Difference]: With dead ends: 447 [2022-11-23 14:16:59,684 INFO L226 Difference]: Without dead ends: 447 [2022-11-23 14:16:59,690 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 [2022-11-23 14:16:59,695 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:16:59,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:16:59,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2022-11-23 14:16:59,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2022-11-23 14:16:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 446 states have (on average 3.1143497757847536) internal successors, (1389), 446 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:59,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 1389 transitions. [2022-11-23 14:16:59,736 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 1389 transitions. Word has length 30 [2022-11-23 14:16:59,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:16:59,738 INFO L495 AbstractCegarLoop]: Abstraction has 447 states and 1389 transitions. [2022-11-23 14:16:59,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:16:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 1389 transitions. [2022-11-23 14:16:59,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-23 14:16:59,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:16:59,742 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] [2022-11-23 14:16:59,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 14:16:59,743 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:16:59,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:16:59,745 INFO L85 PathProgramCache]: Analyzing trace with hash -2050864577, now seen corresponding path program 1 times [2022-11-23 14:16:59,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:16:59,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649126761] [2022-11-23 14:16:59,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:16:59,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:16:59,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:00,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:17:00,006 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:00,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649126761] [2022-11-23 14:17:00,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649126761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:00,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:00,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:17:00,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792706344] [2022-11-23 14:17:00,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:00,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:17:00,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:17:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:17:00,010 INFO L87 Difference]: Start difference. First operand 447 states and 1389 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:00,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:00,150 INFO L93 Difference]: Finished difference Result 448 states and 1390 transitions. [2022-11-23 14:17:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:17:00,151 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-11-23 14:17:00,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:00,155 INFO L225 Difference]: With dead ends: 448 [2022-11-23 14:17:00,155 INFO L226 Difference]: Without dead ends: 448 [2022-11-23 14:17:00,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:17:00,157 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:00,157 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:17:00,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2022-11-23 14:17:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 448. [2022-11-23 14:17:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448 states, 447 states have (on average 3.1096196868008947) internal successors, (1390), 447 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 1390 transitions. [2022-11-23 14:17:00,181 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 1390 transitions. Word has length 31 [2022-11-23 14:17:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:00,182 INFO L495 AbstractCegarLoop]: Abstraction has 448 states and 1390 transitions. [2022-11-23 14:17:00,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:00,182 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 1390 transitions. [2022-11-23 14:17:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-11-23 14:17:00,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:00,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:17:00,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:17:00,186 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:00,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:00,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1644809955, now seen corresponding path program 1 times [2022-11-23 14:17:00,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:00,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741071436] [2022-11-23 14:17:00,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:00,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:00,404 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:17:00,404 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:00,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741071436] [2022-11-23 14:17:00,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741071436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:00,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:00,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:17:00,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891834637] [2022-11-23 14:17:00,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:00,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:17:00,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:00,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:17:00,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:17:00,408 INFO L87 Difference]: Start difference. First operand 448 states and 1390 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:00,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:00,539 INFO L93 Difference]: Finished difference Result 449 states and 1391 transitions. [2022-11-23 14:17:00,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:17:00,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 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 32 [2022-11-23 14:17:00,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:00,544 INFO L225 Difference]: With dead ends: 449 [2022-11-23 14:17:00,544 INFO L226 Difference]: Without dead ends: 449 [2022-11-23 14:17:00,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:17:00,545 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:00,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:17:00,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-11-23 14:17:00,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 449. [2022-11-23 14:17:00,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 449 states, 448 states have (on average 3.1049107142857144) internal successors, (1391), 448 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:00,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449 states to 449 states and 1391 transitions. [2022-11-23 14:17:00,569 INFO L78 Accepts]: Start accepts. Automaton has 449 states and 1391 transitions. Word has length 32 [2022-11-23 14:17:00,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:00,570 INFO L495 AbstractCegarLoop]: Abstraction has 449 states and 1391 transitions. [2022-11-23 14:17:00,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:00,571 INFO L276 IsEmpty]: Start isEmpty. Operand 449 states and 1391 transitions. [2022-11-23 14:17:00,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-23 14:17:00,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:00,574 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] [2022-11-23 14:17:00,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 14:17:00,574 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:00,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:00,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1303251310, now seen corresponding path program 1 times [2022-11-23 14:17:00,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:00,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542547223] [2022-11-23 14:17:00,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:00,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:00,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:00,974 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-23 14:17:00,975 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542547223] [2022-11-23 14:17:00,975 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542547223] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:17:00,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094484583] [2022-11-23 14:17:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:00,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:17:00,976 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:17:00,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:17:01,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:17:01,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:01,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-23 14:17:01,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:17:01,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 14:17:01,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:17:01,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094484583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:01,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:17:01,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-11-23 14:17:01,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410322713] [2022-11-23 14:17:01,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:01,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:17:01,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:01,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:17:01,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:17:01,290 INFO L87 Difference]: Start difference. First operand 449 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:01,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:01,412 INFO L93 Difference]: Finished difference Result 450 states and 1392 transitions. [2022-11-23 14:17:01,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:17:01,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-11-23 14:17:01,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:01,416 INFO L225 Difference]: With dead ends: 450 [2022-11-23 14:17:01,416 INFO L226 Difference]: Without dead ends: 450 [2022-11-23 14:17:01,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:17:01,418 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:01,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:17:01,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-11-23 14:17:01,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 450. [2022-11-23 14:17:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 449 states have (on average 3.1002227171492205) internal successors, (1392), 449 states have internal predecessors, (1392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:01,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 1392 transitions. [2022-11-23 14:17:01,437 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 1392 transitions. Word has length 33 [2022-11-23 14:17:01,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:01,437 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 1392 transitions. [2022-11-23 14:17:01,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:01,438 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 1392 transitions. [2022-11-23 14:17:01,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-23 14:17:01,440 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:01,440 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] [2022-11-23 14:17:01,452 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:17:01,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:17:01,647 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:01,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:01,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2122889334, now seen corresponding path program 1 times [2022-11-23 14:17:01,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:01,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666273206] [2022-11-23 14:17:01,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:01,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:01,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:01,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 14:17:01,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:01,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666273206] [2022-11-23 14:17:01,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666273206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:01,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:01,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:17:01,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551694144] [2022-11-23 14:17:01,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:01,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:17:01,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:01,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:17:01,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:17:01,881 INFO L87 Difference]: Start difference. First operand 450 states and 1392 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:01,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:01,984 INFO L93 Difference]: Finished difference Result 451 states and 1393 transitions. [2022-11-23 14:17:01,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:17:01,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 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 34 [2022-11-23 14:17:01,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:01,988 INFO L225 Difference]: With dead ends: 451 [2022-11-23 14:17:01,988 INFO L226 Difference]: Without dead ends: 451 [2022-11-23 14:17:01,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:17:01,990 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:01,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:17:01,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2022-11-23 14:17:02,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 451. [2022-11-23 14:17:02,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 451 states, 450 states have (on average 3.0955555555555554) internal successors, (1393), 450 states have internal predecessors, (1393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 451 states to 451 states and 1393 transitions. [2022-11-23 14:17:02,008 INFO L78 Accepts]: Start accepts. Automaton has 451 states and 1393 transitions. Word has length 34 [2022-11-23 14:17:02,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:02,008 INFO L495 AbstractCegarLoop]: Abstraction has 451 states and 1393 transitions. [2022-11-23 14:17:02,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 451 states and 1393 transitions. [2022-11-23 14:17:02,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-23 14:17:02,033 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:02,033 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] [2022-11-23 14:17:02,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:17:02,034 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:02,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:02,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1079879516, now seen corresponding path program 1 times [2022-11-23 14:17:02,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:02,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867232889] [2022-11-23 14:17:02,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:02,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:02,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:02,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 14:17:02,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:02,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867232889] [2022-11-23 14:17:02,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867232889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:02,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:02,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:17:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918247814] [2022-11-23 14:17:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:02,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:17:02,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:17:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:17:02,317 INFO L87 Difference]: Start difference. First operand 451 states and 1393 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:02,434 INFO L93 Difference]: Finished difference Result 452 states and 1394 transitions. [2022-11-23 14:17:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:17:02,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 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 35 [2022-11-23 14:17:02,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:02,438 INFO L225 Difference]: With dead ends: 452 [2022-11-23 14:17:02,438 INFO L226 Difference]: Without dead ends: 452 [2022-11-23 14:17:02,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:17:02,441 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:02,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:17:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-11-23 14:17:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452. [2022-11-23 14:17:02,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 451 states have (on average 3.090909090909091) internal successors, (1394), 451 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:02,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 1394 transitions. [2022-11-23 14:17:02,459 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 1394 transitions. Word has length 35 [2022-11-23 14:17:02,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:02,459 INFO L495 AbstractCegarLoop]: Abstraction has 452 states and 1394 transitions. [2022-11-23 14:17:02,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:02,460 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 1394 transitions. [2022-11-23 14:17:02,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:02,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:02,463 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] [2022-11-23 14:17:02,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 14:17:02,464 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:02,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1507111471, now seen corresponding path program 1 times [2022-11-23 14:17:02,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:02,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827407150] [2022-11-23 14:17:02,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:02,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:03,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:17:03,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:03,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827407150] [2022-11-23 14:17:03,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827407150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:03,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:03,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:17:03,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197905567] [2022-11-23 14:17:03,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:03,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:17:03,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:03,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:17:03,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:17:03,228 INFO L87 Difference]: Start difference. First operand 452 states and 1394 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:03,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:03,527 INFO L93 Difference]: Finished difference Result 692 states and 2022 transitions. [2022-11-23 14:17:03,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:17:03,528 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:17:03,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:03,532 INFO L225 Difference]: With dead ends: 692 [2022-11-23 14:17:03,532 INFO L226 Difference]: Without dead ends: 674 [2022-11-23 14:17:03,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:17:03,533 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 158 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:03,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 0 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:17:03,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-11-23 14:17:03,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 482. [2022-11-23 14:17:03,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 3.1247401247401245) internal successors, (1503), 481 states have internal predecessors, (1503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:03,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1503 transitions. [2022-11-23 14:17:03,556 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1503 transitions. Word has length 36 [2022-11-23 14:17:03,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:03,556 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 1503 transitions. [2022-11-23 14:17:03,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:03,556 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1503 transitions. [2022-11-23 14:17:03,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:03,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:03,559 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] [2022-11-23 14:17:03,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 14:17:03,559 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:03,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:03,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1653666515, now seen corresponding path program 1 times [2022-11-23 14:17:03,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:03,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045937343] [2022-11-23 14:17:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:03,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:03,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:08,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:17:08,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:08,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045937343] [2022-11-23 14:17:08,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045937343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:08,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:08,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:17:08,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558802355] [2022-11-23 14:17:08,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:08,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:17:08,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:08,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:17:08,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:17:08,458 INFO L87 Difference]: Start difference. First operand 482 states and 1503 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:12,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:12,480 INFO L93 Difference]: Finished difference Result 1514 states and 4566 transitions. [2022-11-23 14:17:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 14:17:12,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:17:12,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:12,491 INFO L225 Difference]: With dead ends: 1514 [2022-11-23 14:17:12,492 INFO L226 Difference]: Without dead ends: 1485 [2022-11-23 14:17:12,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=410, Invalid=996, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:17:12,493 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 564 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:12,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 0 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 14:17:12,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1485 states. [2022-11-23 14:17:12,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1485 to 541. [2022-11-23 14:17:12,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 540 states have (on average 3.188888888888889) internal successors, (1722), 540 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 1722 transitions. [2022-11-23 14:17:12,538 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 1722 transitions. Word has length 36 [2022-11-23 14:17:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:12,539 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 1722 transitions. [2022-11-23 14:17:12,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 1722 transitions. [2022-11-23 14:17:12,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:12,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:12,542 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] [2022-11-23 14:17:12,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 14:17:12,543 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:12,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:12,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1409544027, now seen corresponding path program 2 times [2022-11-23 14:17:12,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:12,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569047714] [2022-11-23 14:17:12,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:12,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:15,615 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:17:15,615 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:15,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569047714] [2022-11-23 14:17:15,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569047714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:15,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:15,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:17:15,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019449266] [2022-11-23 14:17:15,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:15,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:17:15,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:15,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:17:15,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:17:15,618 INFO L87 Difference]: Start difference. First operand 541 states and 1722 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:18,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:18,872 INFO L93 Difference]: Finished difference Result 1493 states and 4518 transitions. [2022-11-23 14:17:18,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:17:18,873 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:17:18,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:18,885 INFO L225 Difference]: With dead ends: 1493 [2022-11-23 14:17:18,886 INFO L226 Difference]: Without dead ends: 1479 [2022-11-23 14:17:18,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:17:18,888 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 415 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:18,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 0 Invalid, 987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:17:18,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2022-11-23 14:17:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 570. [2022-11-23 14:17:18,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 3.2548330404217927) internal successors, (1852), 569 states have internal predecessors, (1852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:18,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1852 transitions. [2022-11-23 14:17:18,939 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1852 transitions. Word has length 36 [2022-11-23 14:17:18,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:18,940 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 1852 transitions. [2022-11-23 14:17:18,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:18,940 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1852 transitions. [2022-11-23 14:17:18,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:18,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:18,946 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] [2022-11-23 14:17:18,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 14:17:18,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:18,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:18,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1873741405, now seen corresponding path program 3 times [2022-11-23 14:17:18,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:18,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081464749] [2022-11-23 14:17:18,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:18,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:17:22,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:22,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081464749] [2022-11-23 14:17:22,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081464749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:22,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:22,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:17:22,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866087918] [2022-11-23 14:17:22,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:22,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:17:22,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:22,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:17:22,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:17:22,789 INFO L87 Difference]: Start difference. First operand 570 states and 1852 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:27,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:27,738 INFO L93 Difference]: Finished difference Result 1745 states and 5173 transitions. [2022-11-23 14:17:27,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 14:17:27,739 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:17:27,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:27,750 INFO L225 Difference]: With dead ends: 1745 [2022-11-23 14:17:27,750 INFO L226 Difference]: Without dead ends: 1716 [2022-11-23 14:17:27,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=408, Invalid=998, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:17:27,751 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 604 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1455 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:27,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 0 Invalid, 1498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1455 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-23 14:17:27,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1716 states. [2022-11-23 14:17:27,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1716 to 574. [2022-11-23 14:17:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 573 states have (on average 3.268760907504363) internal successors, (1873), 573 states have internal predecessors, (1873), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:27,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 1873 transitions. [2022-11-23 14:17:27,792 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 1873 transitions. Word has length 36 [2022-11-23 14:17:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:27,793 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 1873 transitions. [2022-11-23 14:17:27,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 1873 transitions. [2022-11-23 14:17:27,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:27,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:27,796 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] [2022-11-23 14:17:27,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 14:17:27,796 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:27,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:27,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1008356539, now seen corresponding path program 4 times [2022-11-23 14:17:27,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:27,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443622149] [2022-11-23 14:17:27,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:27,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:27,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:30,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:17:30,424 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:30,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443622149] [2022-11-23 14:17:30,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443622149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:30,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:30,425 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:17:30,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014617031] [2022-11-23 14:17:30,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:30,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:17:30,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:30,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:17:30,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:17:30,427 INFO L87 Difference]: Start difference. First operand 574 states and 1873 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:32,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:32,521 INFO L93 Difference]: Finished difference Result 1557 states and 4720 transitions. [2022-11-23 14:17:32,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:17:32,522 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:17:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:32,534 INFO L225 Difference]: With dead ends: 1557 [2022-11-23 14:17:32,535 INFO L226 Difference]: Without dead ends: 1528 [2022-11-23 14:17:32,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:17:32,537 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 430 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 430 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:32,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [430 Valid, 0 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:17:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2022-11-23 14:17:32,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 592. [2022-11-23 14:17:32,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 3.255499153976311) internal successors, (1924), 591 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:32,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 1924 transitions. [2022-11-23 14:17:32,584 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 1924 transitions. Word has length 36 [2022-11-23 14:17:32,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:32,584 INFO L495 AbstractCegarLoop]: Abstraction has 592 states and 1924 transitions. [2022-11-23 14:17:32,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 1924 transitions. [2022-11-23 14:17:32,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:32,588 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:32,588 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] [2022-11-23 14:17:32,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 14:17:32,589 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:32,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1383896681, now seen corresponding path program 5 times [2022-11-23 14:17:32,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:32,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815477533] [2022-11-23 14:17:32,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:32,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:35,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:17:35,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:35,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815477533] [2022-11-23 14:17:35,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815477533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:35,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:35,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 14:17:35,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841989925] [2022-11-23 14:17:35,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:35,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:17:35,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:35,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:17:35,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:17:35,575 INFO L87 Difference]: Start difference. First operand 592 states and 1924 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:38,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:38,711 INFO L93 Difference]: Finished difference Result 1582 states and 4770 transitions. [2022-11-23 14:17:38,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:17:38,712 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:17:38,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:38,723 INFO L225 Difference]: With dead ends: 1582 [2022-11-23 14:17:38,723 INFO L226 Difference]: Without dead ends: 1568 [2022-11-23 14:17:38,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=213, Invalid=489, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:17:38,724 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 351 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:38,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 0 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 14:17:38,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2022-11-23 14:17:38,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 594. [2022-11-23 14:17:38,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 3.2495784148397977) internal successors, (1927), 593 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:38,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 1927 transitions. [2022-11-23 14:17:38,764 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 1927 transitions. Word has length 36 [2022-11-23 14:17:38,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:38,764 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 1927 transitions. [2022-11-23 14:17:38,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:38,765 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 1927 transitions. [2022-11-23 14:17:38,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:38,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:38,768 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] [2022-11-23 14:17:38,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 14:17:38,768 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:38,769 INFO L85 PathProgramCache]: Analyzing trace with hash -601172835, now seen corresponding path program 6 times [2022-11-23 14:17:38,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:38,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581707762] [2022-11-23 14:17:38,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:38,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:42,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:17:42,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:42,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581707762] [2022-11-23 14:17:42,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581707762] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:42,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:42,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:17:42,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136722894] [2022-11-23 14:17:42,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:42,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:17:42,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:42,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:17:42,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=333, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:17:42,294 INFO L87 Difference]: Start difference. First operand 594 states and 1927 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:52,709 INFO L93 Difference]: Finished difference Result 2340 states and 6773 transitions. [2022-11-23 14:17:52,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-23 14:17:52,710 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:17:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:52,725 INFO L225 Difference]: With dead ends: 2340 [2022-11-23 14:17:52,726 INFO L226 Difference]: Without dead ends: 2312 [2022-11-23 14:17:52,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=980, Invalid=2326, Unknown=0, NotChecked=0, Total=3306 [2022-11-23 14:17:52,728 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 692 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1933 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 1933 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:52,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 0 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 1933 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 14:17:52,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2312 states. [2022-11-23 14:17:52,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2312 to 602. [2022-11-23 14:17:52,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 3.252911813643927) internal successors, (1955), 601 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:52,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1955 transitions. [2022-11-23 14:17:52,780 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1955 transitions. Word has length 36 [2022-11-23 14:17:52,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:52,780 INFO L495 AbstractCegarLoop]: Abstraction has 602 states and 1955 transitions. [2022-11-23 14:17:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:52,781 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1955 transitions. [2022-11-23 14:17:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:52,784 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:52,784 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] [2022-11-23 14:17:52,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 14:17:52,784 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:52,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:52,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1854142971, now seen corresponding path program 7 times [2022-11-23 14:17:52,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:52,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725327255] [2022-11-23 14:17:52,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:52,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:17:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:17:55,215 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:17:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725327255] [2022-11-23 14:17:55,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725327255] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:17:55,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:17:55,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:17:55,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789441336] [2022-11-23 14:17:55,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:17:55,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:17:55,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:17:55,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:17:55,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:17:55,218 INFO L87 Difference]: Start difference. First operand 602 states and 1955 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:57,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:17:57,762 INFO L93 Difference]: Finished difference Result 1690 states and 5133 transitions. [2022-11-23 14:17:57,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:17:57,763 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:17:57,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:17:57,786 INFO L225 Difference]: With dead ends: 1690 [2022-11-23 14:17:57,786 INFO L226 Difference]: Without dead ends: 1676 [2022-11-23 14:17:57,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:17:57,788 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 427 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1010 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:17:57,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 0 Invalid, 1010 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:17:57,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1676 states. [2022-11-23 14:17:57,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1676 to 624. [2022-11-23 14:17:57,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 3.2712680577849116) internal successors, (2038), 623 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:57,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 2038 transitions. [2022-11-23 14:17:57,820 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 2038 transitions. Word has length 36 [2022-11-23 14:17:57,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:17:57,821 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 2038 transitions. [2022-11-23 14:17:57,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:17:57,821 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 2038 transitions. [2022-11-23 14:17:57,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:17:57,823 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:17:57,823 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] [2022-11-23 14:17:57,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-23 14:17:57,824 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:17:57,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:17:57,824 INFO L85 PathProgramCache]: Analyzing trace with hash -299669711, now seen corresponding path program 8 times [2022-11-23 14:17:57,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:17:57,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655748119] [2022-11-23 14:17:57,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:17:57,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:17:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:00,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:00,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655748119] [2022-11-23 14:18:00,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655748119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:00,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:00,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:18:00,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715870726] [2022-11-23 14:18:00,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:00,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:18:00,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:18:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:18:00,347 INFO L87 Difference]: Start difference. First operand 624 states and 2038 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:03,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:03,151 INFO L93 Difference]: Finished difference Result 1590 states and 4851 transitions. [2022-11-23 14:18:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:18:03,152 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:03,160 INFO L225 Difference]: With dead ends: 1590 [2022-11-23 14:18:03,160 INFO L226 Difference]: Without dead ends: 1561 [2022-11-23 14:18:03,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=222, Invalid=534, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:18:03,161 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 370 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:03,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [370 Valid, 0 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-23 14:18:03,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2022-11-23 14:18:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 616. [2022-11-23 14:18:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 3.2585365853658534) internal successors, (2004), 615 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 2004 transitions. [2022-11-23 14:18:03,200 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 2004 transitions. Word has length 36 [2022-11-23 14:18:03,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:03,200 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 2004 transitions. [2022-11-23 14:18:03,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:03,201 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 2004 transitions. [2022-11-23 14:18:03,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:03,203 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:03,204 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] [2022-11-23 14:18:03,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-23 14:18:03,204 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:03,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:03,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1591823613, now seen corresponding path program 2 times [2022-11-23 14:18:03,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:03,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085351950] [2022-11-23 14:18:03,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:03,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:03,672 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:03,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085351950] [2022-11-23 14:18:03,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085351950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:03,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:03,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:18:03,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606755778] [2022-11-23 14:18:03,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:03,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:18:03,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:03,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:18:03,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:18:03,676 INFO L87 Difference]: Start difference. First operand 616 states and 2004 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:03,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:03,994 INFO L93 Difference]: Finished difference Result 941 states and 2920 transitions. [2022-11-23 14:18:03,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:18:03,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:03,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:04,012 INFO L225 Difference]: With dead ends: 941 [2022-11-23 14:18:04,013 INFO L226 Difference]: Without dead ends: 941 [2022-11-23 14:18:04,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:18:04,014 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:04,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:18:04,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-11-23 14:18:04,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 677. [2022-11-23 14:18:04,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 677 states, 676 states have (on average 3.161242603550296) internal successors, (2137), 676 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 677 states to 677 states and 2137 transitions. [2022-11-23 14:18:04,045 INFO L78 Accepts]: Start accepts. Automaton has 677 states and 2137 transitions. Word has length 36 [2022-11-23 14:18:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:04,045 INFO L495 AbstractCegarLoop]: Abstraction has 677 states and 2137 transitions. [2022-11-23 14:18:04,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:04,046 INFO L276 IsEmpty]: Start isEmpty. Operand 677 states and 2137 transitions. [2022-11-23 14:18:04,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:04,049 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:04,049 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] [2022-11-23 14:18:04,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-23 14:18:04,049 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:04,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:04,050 INFO L85 PathProgramCache]: Analyzing trace with hash 1315750899, now seen corresponding path program 3 times [2022-11-23 14:18:04,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:04,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391449130] [2022-11-23 14:18:04,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:04,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:04,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:04,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:04,669 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:04,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391449130] [2022-11-23 14:18:04,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391449130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:04,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:04,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:18:04,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750300194] [2022-11-23 14:18:04,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:04,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:18:04,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:04,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:18:04,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:18:04,672 INFO L87 Difference]: Start difference. First operand 677 states and 2137 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:04,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:04,986 INFO L93 Difference]: Finished difference Result 811 states and 2443 transitions. [2022-11-23 14:18:04,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:18:04,987 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:04,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:04,990 INFO L225 Difference]: With dead ends: 811 [2022-11-23 14:18:04,990 INFO L226 Difference]: Without dead ends: 811 [2022-11-23 14:18:04,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:18:04,991 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:04,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:18:04,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2022-11-23 14:18:05,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 645. [2022-11-23 14:18:05,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 3.1133540372670807) internal successors, (2005), 644 states have internal predecessors, (2005), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:05,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 2005 transitions. [2022-11-23 14:18:05,014 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 2005 transitions. Word has length 36 [2022-11-23 14:18:05,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:05,015 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 2005 transitions. [2022-11-23 14:18:05,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:05,015 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 2005 transitions. [2022-11-23 14:18:05,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:05,017 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:05,017 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] [2022-11-23 14:18:05,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-23 14:18:05,018 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:05,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:05,018 INFO L85 PathProgramCache]: Analyzing trace with hash -609408519, now seen corresponding path program 9 times [2022-11-23 14:18:05,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:05,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345801277] [2022-11-23 14:18:05,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:05,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:05,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:07,349 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:07,349 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:07,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345801277] [2022-11-23 14:18:07,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345801277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:07,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:07,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:18:07,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031148193] [2022-11-23 14:18:07,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:07,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:18:07,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:07,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:18:07,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:18:07,353 INFO L87 Difference]: Start difference. First operand 645 states and 2005 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:10,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:10,271 INFO L93 Difference]: Finished difference Result 1799 states and 5272 transitions. [2022-11-23 14:18:10,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 14:18:10,271 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:10,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:10,277 INFO L225 Difference]: With dead ends: 1799 [2022-11-23 14:18:10,277 INFO L226 Difference]: Without dead ends: 1785 [2022-11-23 14:18:10,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=244, Invalid=568, Unknown=0, NotChecked=0, Total=812 [2022-11-23 14:18:10,278 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 402 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1101 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:10,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 0 Invalid, 1118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1101 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:18:10,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1785 states. [2022-11-23 14:18:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1785 to 637. [2022-11-23 14:18:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 636 states have (on average 3.108490566037736) internal successors, (1977), 636 states have internal predecessors, (1977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:10,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 1977 transitions. [2022-11-23 14:18:10,309 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 1977 transitions. Word has length 36 [2022-11-23 14:18:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:10,309 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 1977 transitions. [2022-11-23 14:18:10,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 1977 transitions. [2022-11-23 14:18:10,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:10,312 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:10,312 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] [2022-11-23 14:18:10,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-23 14:18:10,313 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:10,313 INFO L85 PathProgramCache]: Analyzing trace with hash -1755938587, now seen corresponding path program 4 times [2022-11-23 14:18:10,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:10,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989839564] [2022-11-23 14:18:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:10,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:10,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:10,802 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:10,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989839564] [2022-11-23 14:18:10,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989839564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:10,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:10,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:18:10,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966575449] [2022-11-23 14:18:10,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:10,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:18:10,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:10,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:18:10,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:18:10,805 INFO L87 Difference]: Start difference. First operand 637 states and 1977 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:11,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:11,152 INFO L93 Difference]: Finished difference Result 746 states and 2200 transitions. [2022-11-23 14:18:11,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:18:11,153 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:11,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:11,156 INFO L225 Difference]: With dead ends: 746 [2022-11-23 14:18:11,156 INFO L226 Difference]: Without dead ends: 731 [2022-11-23 14:18:11,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:18:11,158 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 141 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:11,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [141 Valid, 0 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:18:11,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2022-11-23 14:18:11,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 614. [2022-11-23 14:18:11,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 613 states have (on average 3.094616639477977) internal successors, (1897), 613 states have internal predecessors, (1897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:11,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 1897 transitions. [2022-11-23 14:18:11,181 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 1897 transitions. Word has length 36 [2022-11-23 14:18:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:11,182 INFO L495 AbstractCegarLoop]: Abstraction has 614 states and 1897 transitions. [2022-11-23 14:18:11,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 1897 transitions. [2022-11-23 14:18:11,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:11,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:11,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:18:11,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-23 14:18:11,186 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:11,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:11,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1854987411, now seen corresponding path program 10 times [2022-11-23 14:18:11,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:11,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160116727] [2022-11-23 14:18:11,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:11,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:14,148 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:14,149 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:14,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160116727] [2022-11-23 14:18:14,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160116727] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:14,149 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:14,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:18:14,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194603556] [2022-11-23 14:18:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:14,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:18:14,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:14,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:18:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:18:14,152 INFO L87 Difference]: Start difference. First operand 614 states and 1897 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:18,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:18,466 INFO L93 Difference]: Finished difference Result 2106 states and 6136 transitions. [2022-11-23 14:18:18,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 14:18:18,467 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:18,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:18,472 INFO L225 Difference]: With dead ends: 2106 [2022-11-23 14:18:18,472 INFO L226 Difference]: Without dead ends: 2077 [2022-11-23 14:18:18,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=408, Invalid=998, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:18:18,473 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 535 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:18,474 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [535 Valid, 0 Invalid, 1271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 14:18:18,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2077 states. [2022-11-23 14:18:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2077 to 642. [2022-11-23 14:18:18,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 3.079563182527301) internal successors, (1974), 641 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:18,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1974 transitions. [2022-11-23 14:18:18,506 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1974 transitions. Word has length 36 [2022-11-23 14:18:18,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:18,507 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 1974 transitions. [2022-11-23 14:18:18,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:18,507 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1974 transitions. [2022-11-23 14:18:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:18,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:18,509 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] [2022-11-23 14:18:18,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-23 14:18:18,510 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:18,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:18,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1479447269, now seen corresponding path program 11 times [2022-11-23 14:18:18,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:18,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039271052] [2022-11-23 14:18:18,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:18,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:18,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:20,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:20,548 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:20,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039271052] [2022-11-23 14:18:20,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039271052] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:20,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:20,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:18:20,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580027703] [2022-11-23 14:18:20,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:20,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:18:20,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:20,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:18:20,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:18:20,549 INFO L87 Difference]: Start difference. First operand 642 states and 1974 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:22,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:22,329 INFO L93 Difference]: Finished difference Result 1882 states and 5373 transitions. [2022-11-23 14:18:22,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:18:22,330 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:22,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:22,335 INFO L225 Difference]: With dead ends: 1882 [2022-11-23 14:18:22,336 INFO L226 Difference]: Without dead ends: 1868 [2022-11-23 14:18:22,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:18:22,337 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 351 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1092 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:22,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 0 Invalid, 1092 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:18:22,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2022-11-23 14:18:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 648. [2022-11-23 14:18:22,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 3.0834621329211744) internal successors, (1995), 647 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:22,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 1995 transitions. [2022-11-23 14:18:22,369 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 1995 transitions. Word has length 36 [2022-11-23 14:18:22,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:22,369 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 1995 transitions. [2022-11-23 14:18:22,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:22,370 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 1995 transitions. [2022-11-23 14:18:22,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:22,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:22,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:18:22,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-23 14:18:22,373 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:22,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:22,373 INFO L85 PathProgramCache]: Analyzing trace with hash -2022234707, now seen corresponding path program 12 times [2022-11-23 14:18:22,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:22,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768604187] [2022-11-23 14:18:22,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:22,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:24,742 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:24,743 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:24,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768604187] [2022-11-23 14:18:24,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768604187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:24,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:24,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 14:18:24,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983218248] [2022-11-23 14:18:24,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:24,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:18:24,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:24,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:18:24,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:18:24,744 INFO L87 Difference]: Start difference. First operand 648 states and 1995 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:32,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:32,297 INFO L93 Difference]: Finished difference Result 2331 states and 6696 transitions. [2022-11-23 14:18:32,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-23 14:18:32,300 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:32,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:32,309 INFO L225 Difference]: With dead ends: 2331 [2022-11-23 14:18:32,309 INFO L226 Difference]: Without dead ends: 2317 [2022-11-23 14:18:32,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=635, Invalid=1527, Unknown=0, NotChecked=0, Total=2162 [2022-11-23 14:18:32,311 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 529 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1709 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:32,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [529 Valid, 0 Invalid, 1737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1709 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 14:18:32,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2317 states. [2022-11-23 14:18:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2317 to 652. [2022-11-23 14:18:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.075268817204301) internal successors, (2002), 651 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:32,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 2002 transitions. [2022-11-23 14:18:32,354 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 2002 transitions. Word has length 36 [2022-11-23 14:18:32,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:32,355 INFO L495 AbstractCegarLoop]: Abstraction has 652 states and 2002 transitions. [2022-11-23 14:18:32,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:32,355 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 2002 transitions. [2022-11-23 14:18:32,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:32,358 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:32,358 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] [2022-11-23 14:18:32,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-23 14:18:32,359 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:32,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:32,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1196638427, now seen corresponding path program 13 times [2022-11-23 14:18:32,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:32,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111604207] [2022-11-23 14:18:32,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:32,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:32,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:34,477 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:34,477 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:34,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111604207] [2022-11-23 14:18:34,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111604207] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:34,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:34,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 14:18:34,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308924786] [2022-11-23 14:18:34,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:34,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:18:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:34,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:18:34,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:18:34,480 INFO L87 Difference]: Start difference. First operand 652 states and 2002 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:48,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:18:48,331 INFO L93 Difference]: Finished difference Result 2967 states and 8191 transitions. [2022-11-23 14:18:48,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-23 14:18:48,332 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:18:48,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:18:48,341 INFO L225 Difference]: With dead ends: 2967 [2022-11-23 14:18:48,341 INFO L226 Difference]: Without dead ends: 2939 [2022-11-23 14:18:48,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 11.4s TimeCoverageRelationStatistics Valid=1165, Invalid=2995, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 14:18:48,343 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 625 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2195 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 2195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:18:48,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [625 Valid, 0 Invalid, 2242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 2195 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-23 14:18:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-11-23 14:18:48,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 656. [2022-11-23 14:18:48,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 3.0748091603053433) internal successors, (2014), 655 states have internal predecessors, (2014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:48,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 2014 transitions. [2022-11-23 14:18:48,382 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 2014 transitions. Word has length 36 [2022-11-23 14:18:48,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:18:48,383 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 2014 transitions. [2022-11-23 14:18:48,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:18:48,383 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 2014 transitions. [2022-11-23 14:18:48,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:18:48,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:18:48,385 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] [2022-11-23 14:18:48,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-23 14:18:48,386 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:18:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:18:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 603481601, now seen corresponding path program 14 times [2022-11-23 14:18:48,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:18:48,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963060520] [2022-11-23 14:18:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:18:48,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:18:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:18:50,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:18:50,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:18:50,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963060520] [2022-11-23 14:18:50,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963060520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:18:50,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:18:50,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 14:18:50,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197084780] [2022-11-23 14:18:50,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:18:50,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:18:50,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:18:50,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:18:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:18:50,395 INFO L87 Difference]: Start difference. First operand 656 states and 2014 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:05,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:05,036 INFO L93 Difference]: Finished difference Result 3073 states and 8488 transitions. [2022-11-23 14:19:05,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-23 14:19:05,037 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:05,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:05,046 INFO L225 Difference]: With dead ends: 3073 [2022-11-23 14:19:05,047 INFO L226 Difference]: Without dead ends: 3045 [2022-11-23 14:19:05,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 794 ImplicationChecksByTransitivity, 11.8s TimeCoverageRelationStatistics Valid=1152, Invalid=3008, Unknown=0, NotChecked=0, Total=4160 [2022-11-23 14:19:05,049 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 691 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2057 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 691 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:05,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [691 Valid, 0 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2057 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-23 14:19:05,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3045 states. [2022-11-23 14:19:05,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3045 to 664. [2022-11-23 14:19:05,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 663 states have (on average 3.0739064856711917) internal successors, (2038), 663 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:05,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 2038 transitions. [2022-11-23 14:19:05,097 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 2038 transitions. Word has length 36 [2022-11-23 14:19:05,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:05,097 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 2038 transitions. [2022-11-23 14:19:05,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:05,098 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 2038 transitions. [2022-11-23 14:19:05,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:05,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:05,101 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] [2022-11-23 14:19:05,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-23 14:19:05,101 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:05,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:05,102 INFO L85 PathProgramCache]: Analyzing trace with hash 905248773, now seen corresponding path program 15 times [2022-11-23 14:19:05,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:05,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887327608] [2022-11-23 14:19:05,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:05,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:05,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:07,117 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:07,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:07,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887327608] [2022-11-23 14:19:07,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887327608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:07,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:07,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 14:19:07,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940992105] [2022-11-23 14:19:07,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:07,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:19:07,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:07,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:19:07,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:19:07,120 INFO L87 Difference]: Start difference. First operand 664 states and 2038 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:10,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:10,609 INFO L93 Difference]: Finished difference Result 1976 states and 5703 transitions. [2022-11-23 14:19:10,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 14:19:10,610 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:10,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:10,614 INFO L225 Difference]: With dead ends: 1976 [2022-11-23 14:19:10,615 INFO L226 Difference]: Without dead ends: 1962 [2022-11-23 14:19:10,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=229, Invalid=527, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:19:10,616 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 306 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:10,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 0 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:19:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1962 states. [2022-11-23 14:19:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1962 to 688. [2022-11-23 14:19:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 3.088791848617176) internal successors, (2122), 687 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:10,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 2122 transitions. [2022-11-23 14:19:10,649 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 2122 transitions. Word has length 36 [2022-11-23 14:19:10,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:10,649 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 2122 transitions. [2022-11-23 14:19:10,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 2122 transitions. [2022-11-23 14:19:10,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:10,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:10,652 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] [2022-11-23 14:19:10,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-23 14:19:10,653 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:10,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:10,653 INFO L85 PathProgramCache]: Analyzing trace with hash -934402717, now seen corresponding path program 16 times [2022-11-23 14:19:10,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:10,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019778914] [2022-11-23 14:19:10,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:10,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:12,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:12,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:12,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019778914] [2022-11-23 14:19:12,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019778914] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:12,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:12,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 14:19:12,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135945016] [2022-11-23 14:19:12,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:12,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:19:12,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:12,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:19:12,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:19:12,235 INFO L87 Difference]: Start difference. First operand 688 states and 2122 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:15,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:15,435 INFO L93 Difference]: Finished difference Result 2020 states and 5787 transitions. [2022-11-23 14:19:15,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:19:15,435 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:15,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:15,439 INFO L225 Difference]: With dead ends: 2020 [2022-11-23 14:19:15,439 INFO L226 Difference]: Without dead ends: 2006 [2022-11-23 14:19:15,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=210, Invalid=492, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:19:15,439 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 316 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:15,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 0 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:19:15,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2006 states. [2022-11-23 14:19:15,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2006 to 662. [2022-11-23 14:19:15,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 662 states, 661 states have (on average 3.075642965204236) internal successors, (2033), 661 states have internal predecessors, (2033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:15,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 662 states to 662 states and 2033 transitions. [2022-11-23 14:19:15,467 INFO L78 Accepts]: Start accepts. Automaton has 662 states and 2033 transitions. Word has length 36 [2022-11-23 14:19:15,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:15,467 INFO L495 AbstractCegarLoop]: Abstraction has 662 states and 2033 transitions. [2022-11-23 14:19:15,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:15,468 INFO L276 IsEmpty]: Start isEmpty. Operand 662 states and 2033 transitions. [2022-11-23 14:19:15,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:15,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:15,470 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] [2022-11-23 14:19:15,470 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-23 14:19:15,471 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:15,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:15,471 INFO L85 PathProgramCache]: Analyzing trace with hash -121598533, now seen corresponding path program 17 times [2022-11-23 14:19:15,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:15,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107815156] [2022-11-23 14:19:15,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:15,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:17,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:17,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:17,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107815156] [2022-11-23 14:19:17,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107815156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:17,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:17,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:19:17,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717174425] [2022-11-23 14:19:17,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:17,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:19:17,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:17,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:19:17,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:19:17,775 INFO L87 Difference]: Start difference. First operand 662 states and 2033 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:21,956 INFO L93 Difference]: Finished difference Result 1429 states and 4110 transitions. [2022-11-23 14:19:21,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 14:19:21,957 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:21,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:21,959 INFO L225 Difference]: With dead ends: 1429 [2022-11-23 14:19:21,959 INFO L226 Difference]: Without dead ends: 1400 [2022-11-23 14:19:21,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=346, Invalid=914, Unknown=0, NotChecked=0, Total=1260 [2022-11-23 14:19:21,961 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 542 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:21,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [542 Valid, 0 Invalid, 1282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 14:19:21,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-11-23 14:19:21,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 695. [2022-11-23 14:19:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 694 states have (on average 3.048991354466859) internal successors, (2116), 694 states have internal predecessors, (2116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 2116 transitions. [2022-11-23 14:19:21,990 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 2116 transitions. Word has length 36 [2022-11-23 14:19:21,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:21,991 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 2116 transitions. [2022-11-23 14:19:21,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:21,991 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 2116 transitions. [2022-11-23 14:19:21,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:21,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:21,995 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] [2022-11-23 14:19:21,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-23 14:19:21,996 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:21,997 INFO L85 PathProgramCache]: Analyzing trace with hash 253941609, now seen corresponding path program 18 times [2022-11-23 14:19:21,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:21,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034495711] [2022-11-23 14:19:21,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:21,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:24,072 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:24,072 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:24,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034495711] [2022-11-23 14:19:24,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034495711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:24,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:24,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:19:24,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179680527] [2022-11-23 14:19:24,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:24,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:19:24,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:24,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:19:24,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:19:24,075 INFO L87 Difference]: Start difference. First operand 695 states and 2116 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:26,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:26,924 INFO L93 Difference]: Finished difference Result 1438 states and 4105 transitions. [2022-11-23 14:19:26,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:19:26,924 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:26,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:26,927 INFO L225 Difference]: With dead ends: 1438 [2022-11-23 14:19:26,928 INFO L226 Difference]: Without dead ends: 1424 [2022-11-23 14:19:26,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2022-11-23 14:19:26,929 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 309 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:26,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 0 Invalid, 1096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:19:26,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1424 states. [2022-11-23 14:19:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1424 to 680. [2022-11-23 14:19:26,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 3.055964653902798) internal successors, (2075), 679 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:26,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2075 transitions. [2022-11-23 14:19:26,960 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2075 transitions. Word has length 36 [2022-11-23 14:19:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:26,961 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 2075 transitions. [2022-11-23 14:19:26,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:26,961 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2075 transitions. [2022-11-23 14:19:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:26,964 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:26,964 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] [2022-11-23 14:19:26,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-23 14:19:26,964 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:26,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:26,965 INFO L85 PathProgramCache]: Analyzing trace with hash -288845829, now seen corresponding path program 19 times [2022-11-23 14:19:26,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:26,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394567693] [2022-11-23 14:19:26,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:26,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:29,220 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:29,220 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:29,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394567693] [2022-11-23 14:19:29,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394567693] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:29,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:29,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 14:19:29,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889202969] [2022-11-23 14:19:29,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:29,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:19:29,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:29,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:19:29,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:19:29,222 INFO L87 Difference]: Start difference. First operand 680 states and 2075 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:31,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:31,642 INFO L93 Difference]: Finished difference Result 1466 states and 4143 transitions. [2022-11-23 14:19:31,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:19:31,643 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:31,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:31,646 INFO L225 Difference]: With dead ends: 1466 [2022-11-23 14:19:31,646 INFO L226 Difference]: Without dead ends: 1452 [2022-11-23 14:19:31,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:19:31,647 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 254 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1109 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 1109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:31,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 0 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 1109 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:19:31,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1452 states. [2022-11-23 14:19:31,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1452 to 680. [2022-11-23 14:19:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 3.055964653902798) internal successors, (2075), 679 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:31,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2075 transitions. [2022-11-23 14:19:31,668 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2075 transitions. Word has length 36 [2022-11-23 14:19:31,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:31,669 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 2075 transitions. [2022-11-23 14:19:31,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:31,669 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2075 transitions. [2022-11-23 14:19:31,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:31,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:31,671 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] [2022-11-23 14:19:31,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-23 14:19:31,672 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:31,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:31,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1479646685, now seen corresponding path program 20 times [2022-11-23 14:19:31,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:31,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140029292] [2022-11-23 14:19:31,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:31,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:31,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:33,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:33,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140029292] [2022-11-23 14:19:33,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140029292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:33,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:33,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:19:33,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168044204] [2022-11-23 14:19:33,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:33,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:19:33,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:33,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:19:33,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:19:33,904 INFO L87 Difference]: Start difference. First operand 680 states and 2075 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:35,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:35,901 INFO L93 Difference]: Finished difference Result 848 states and 2390 transitions. [2022-11-23 14:19:35,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:19:35,902 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:35,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:35,903 INFO L225 Difference]: With dead ends: 848 [2022-11-23 14:19:35,904 INFO L226 Difference]: Without dead ends: 841 [2022-11-23 14:19:35,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:19:35,905 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:35,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:19:35,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-11-23 14:19:35,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 689. [2022-11-23 14:19:35,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 3.0450581395348837) internal successors, (2095), 688 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:35,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 2095 transitions. [2022-11-23 14:19:35,925 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 2095 transitions. Word has length 36 [2022-11-23 14:19:35,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:35,926 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 2095 transitions. [2022-11-23 14:19:35,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:35,926 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 2095 transitions. [2022-11-23 14:19:35,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:35,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:35,928 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] [2022-11-23 14:19:35,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-23 14:19:35,929 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:35,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:35,929 INFO L85 PathProgramCache]: Analyzing trace with hash 402586323, now seen corresponding path program 21 times [2022-11-23 14:19:35,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:35,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984872618] [2022-11-23 14:19:35,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:35,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:38,009 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:38,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984872618] [2022-11-23 14:19:38,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984872618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:38,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:38,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:19:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500161945] [2022-11-23 14:19:38,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:38,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:19:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:19:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:19:38,011 INFO L87 Difference]: Start difference. First operand 689 states and 2095 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:42,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:42,477 INFO L93 Difference]: Finished difference Result 1265 states and 3547 transitions. [2022-11-23 14:19:42,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 14:19:42,477 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:42,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:42,480 INFO L225 Difference]: With dead ends: 1265 [2022-11-23 14:19:42,480 INFO L226 Difference]: Without dead ends: 1258 [2022-11-23 14:19:42,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=371, Invalid=819, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:19:42,482 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 415 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:42,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 0 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-23 14:19:42,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1258 states. [2022-11-23 14:19:42,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1258 to 702. [2022-11-23 14:19:42,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 3.044222539229672) internal successors, (2134), 701 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:42,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 2134 transitions. [2022-11-23 14:19:42,506 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 2134 transitions. Word has length 36 [2022-11-23 14:19:42,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:42,506 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 2134 transitions. [2022-11-23 14:19:42,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:42,507 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 2134 transitions. [2022-11-23 14:19:42,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:42,509 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:42,509 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] [2022-11-23 14:19:42,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-23 14:19:42,509 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:42,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:42,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1992789003, now seen corresponding path program 22 times [2022-11-23 14:19:42,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:42,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132706628] [2022-11-23 14:19:42,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:42,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:44,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:44,420 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:44,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132706628] [2022-11-23 14:19:44,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132706628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:44,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:44,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:19:44,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153425280] [2022-11-23 14:19:44,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:44,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:19:44,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:44,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:19:44,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:19:44,422 INFO L87 Difference]: Start difference. First operand 702 states and 2134 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:45,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:45,810 INFO L93 Difference]: Finished difference Result 1011 states and 2782 transitions. [2022-11-23 14:19:45,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:19:45,811 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:45,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:45,813 INFO L225 Difference]: With dead ends: 1011 [2022-11-23 14:19:45,813 INFO L226 Difference]: Without dead ends: 1004 [2022-11-23 14:19:45,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:19:45,813 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 307 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:45,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 0 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:19:45,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2022-11-23 14:19:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 697. [2022-11-23 14:19:45,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.0474137931034484) internal successors, (2121), 696 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:45,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2121 transitions. [2022-11-23 14:19:45,850 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2121 transitions. Word has length 36 [2022-11-23 14:19:45,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:45,851 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 2121 transitions. [2022-11-23 14:19:45,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:45,851 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2121 transitions. [2022-11-23 14:19:45,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:45,853 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:45,853 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] [2022-11-23 14:19:45,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-23 14:19:45,854 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:45,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:45,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1304275645, now seen corresponding path program 23 times [2022-11-23 14:19:45,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:45,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815374040] [2022-11-23 14:19:45,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:45,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:48,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:48,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:48,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815374040] [2022-11-23 14:19:48,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815374040] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:48,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:48,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:19:48,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536272639] [2022-11-23 14:19:48,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:48,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:19:48,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:48,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:19:48,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:19:48,279 INFO L87 Difference]: Start difference. First operand 697 states and 2121 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:50,723 INFO L93 Difference]: Finished difference Result 1179 states and 3353 transitions. [2022-11-23 14:19:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:19:50,723 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:50,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:50,725 INFO L225 Difference]: With dead ends: 1179 [2022-11-23 14:19:50,725 INFO L226 Difference]: Without dead ends: 1165 [2022-11-23 14:19:50,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:19:50,726 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:50,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:19:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2022-11-23 14:19:50,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 692. [2022-11-23 14:19:50,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 3.0506512301013027) internal successors, (2108), 691 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:50,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 2108 transitions. [2022-11-23 14:19:50,746 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 2108 transitions. Word has length 36 [2022-11-23 14:19:50,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:50,747 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 2108 transitions. [2022-11-23 14:19:50,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:50,747 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 2108 transitions. [2022-11-23 14:19:50,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:50,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:50,749 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] [2022-11-23 14:19:50,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-23 14:19:50,750 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:50,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:50,750 INFO L85 PathProgramCache]: Analyzing trace with hash 898056527, now seen corresponding path program 24 times [2022-11-23 14:19:50,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:50,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198668984] [2022-11-23 14:19:50,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:50,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:52,166 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:52,166 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:52,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198668984] [2022-11-23 14:19:52,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198668984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:52,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:52,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:19:52,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575588980] [2022-11-23 14:19:52,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:52,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:19:52,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:52,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:19:52,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:19:52,169 INFO L87 Difference]: Start difference. First operand 692 states and 2108 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:54,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:19:54,544 INFO L93 Difference]: Finished difference Result 2042 states and 5732 transitions. [2022-11-23 14:19:54,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-23 14:19:54,545 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:19:54,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:19:54,548 INFO L225 Difference]: With dead ends: 2042 [2022-11-23 14:19:54,548 INFO L226 Difference]: Without dead ends: 2013 [2022-11-23 14:19:54,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:19:54,548 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 350 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1025 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:19:54,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 0 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1025 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:19:54,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2022-11-23 14:19:54,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 697. [2022-11-23 14:19:54,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.0474137931034484) internal successors, (2121), 696 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:54,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2121 transitions. [2022-11-23 14:19:54,568 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2121 transitions. Word has length 36 [2022-11-23 14:19:54,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:19:54,569 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 2121 transitions. [2022-11-23 14:19:54,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:19:54,569 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2121 transitions. [2022-11-23 14:19:54,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:19:54,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:19:54,571 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] [2022-11-23 14:19:54,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-23 14:19:54,571 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:19:54,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:19:54,572 INFO L85 PathProgramCache]: Analyzing trace with hash 730809231, now seen corresponding path program 25 times [2022-11-23 14:19:54,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:19:54,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518062549] [2022-11-23 14:19:54,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:19:54,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:19:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:19:56,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:19:56,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:19:56,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518062549] [2022-11-23 14:19:56,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518062549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:19:56,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:19:56,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 14:19:56,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995291873] [2022-11-23 14:19:56,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:19:56,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:19:56,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:19:56,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:19:56,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:19:56,809 INFO L87 Difference]: Start difference. First operand 697 states and 2121 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:05,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:05,554 INFO L93 Difference]: Finished difference Result 2071 states and 5748 transitions. [2022-11-23 14:20:05,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-23 14:20:05,555 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:05,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:05,559 INFO L225 Difference]: With dead ends: 2071 [2022-11-23 14:20:05,559 INFO L226 Difference]: Without dead ends: 2057 [2022-11-23 14:20:05,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=572, Invalid=1408, Unknown=0, NotChecked=0, Total=1980 [2022-11-23 14:20:05,560 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 509 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1676 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:05,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 0 Invalid, 1702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1676 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-23 14:20:05,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2057 states. [2022-11-23 14:20:05,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2057 to 697. [2022-11-23 14:20:05,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 696 states have (on average 3.0474137931034484) internal successors, (2121), 696 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:05,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 2121 transitions. [2022-11-23 14:20:05,597 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 2121 transitions. Word has length 36 [2022-11-23 14:20:05,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:05,597 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 2121 transitions. [2022-11-23 14:20:05,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:05,598 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 2121 transitions. [2022-11-23 14:20:05,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:05,600 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:05,600 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] [2022-11-23 14:20:05,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-23 14:20:05,601 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:05,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:05,602 INFO L85 PathProgramCache]: Analyzing trace with hash -478827339, now seen corresponding path program 26 times [2022-11-23 14:20:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:05,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769866631] [2022-11-23 14:20:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:05,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:07,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:07,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:07,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769866631] [2022-11-23 14:20:07,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769866631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:07,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:07,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:20:07,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938061193] [2022-11-23 14:20:07,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:07,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:20:07,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:07,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:20:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:20:07,707 INFO L87 Difference]: Start difference. First operand 697 states and 2121 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:16,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:16,174 INFO L93 Difference]: Finished difference Result 1448 states and 3975 transitions. [2022-11-23 14:20:16,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-23 14:20:16,175 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:16,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:16,177 INFO L225 Difference]: With dead ends: 1448 [2022-11-23 14:20:16,177 INFO L226 Difference]: Without dead ends: 1434 [2022-11-23 14:20:16,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=533, Invalid=1189, Unknown=0, NotChecked=0, Total=1722 [2022-11-23 14:20:16,178 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 575 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:16,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 0 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 14:20:16,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-11-23 14:20:16,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 701. [2022-11-23 14:20:16,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 3.047142857142857) internal successors, (2133), 700 states have internal predecessors, (2133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:16,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 2133 transitions. [2022-11-23 14:20:16,197 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 2133 transitions. Word has length 36 [2022-11-23 14:20:16,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:16,197 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 2133 transitions. [2022-11-23 14:20:16,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:16,197 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 2133 transitions. [2022-11-23 14:20:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:16,199 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:16,199 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] [2022-11-23 14:20:16,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-23 14:20:16,200 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash 775867983, now seen corresponding path program 27 times [2022-11-23 14:20:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790521463] [2022-11-23 14:20:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:16,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:18,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:18,188 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:18,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790521463] [2022-11-23 14:20:18,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790521463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:18,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:18,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:20:18,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138587869] [2022-11-23 14:20:18,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:18,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:20:18,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:18,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:20:18,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:20:18,190 INFO L87 Difference]: Start difference. First operand 701 states and 2133 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:20,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:20,528 INFO L93 Difference]: Finished difference Result 1024 states and 2880 transitions. [2022-11-23 14:20:20,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:20:20,528 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:20,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:20,530 INFO L225 Difference]: With dead ends: 1024 [2022-11-23 14:20:20,530 INFO L226 Difference]: Without dead ends: 1017 [2022-11-23 14:20:20,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:20:20,531 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 249 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:20,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 0 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:20:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-11-23 14:20:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 713. [2022-11-23 14:20:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 3.0491573033707864) internal successors, (2171), 712 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:20,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2171 transitions. [2022-11-23 14:20:20,556 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2171 transitions. Word has length 36 [2022-11-23 14:20:20,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:20,556 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 2171 transitions. [2022-11-23 14:20:20,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:20,556 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2171 transitions. [2022-11-23 14:20:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:20,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:20,558 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] [2022-11-23 14:20:20,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-23 14:20:20,559 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash 182711157, now seen corresponding path program 28 times [2022-11-23 14:20:20,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:20,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851880048] [2022-11-23 14:20:20,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:20,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:22,390 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:22,390 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:22,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851880048] [2022-11-23 14:20:22,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851880048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:22,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:22,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:20:22,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335235817] [2022-11-23 14:20:22,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:22,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:20:22,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:22,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:20:22,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:20:22,392 INFO L87 Difference]: Start difference. First operand 713 states and 2171 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:23,958 INFO L93 Difference]: Finished difference Result 996 states and 2834 transitions. [2022-11-23 14:20:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:20:23,958 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:23,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:23,960 INFO L225 Difference]: With dead ends: 996 [2022-11-23 14:20:23,960 INFO L226 Difference]: Without dead ends: 989 [2022-11-23 14:20:23,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=291, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:20:23,961 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 244 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:23,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 0 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:20:23,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2022-11-23 14:20:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 731. [2022-11-23 14:20:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 3.063013698630137) internal successors, (2236), 730 states have internal predecessors, (2236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2236 transitions. [2022-11-23 14:20:23,988 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2236 transitions. Word has length 36 [2022-11-23 14:20:23,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:23,989 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 2236 transitions. [2022-11-23 14:20:23,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:23,989 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2236 transitions. [2022-11-23 14:20:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:23,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:23,991 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] [2022-11-23 14:20:23,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-23 14:20:23,992 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:23,992 INFO L85 PathProgramCache]: Analyzing trace with hash 484478329, now seen corresponding path program 29 times [2022-11-23 14:20:23,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:23,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486515813] [2022-11-23 14:20:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:23,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:24,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:26,010 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:26,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486515813] [2022-11-23 14:20:26,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486515813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:26,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:26,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:20:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237177957] [2022-11-23 14:20:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:26,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:20:26,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:20:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:20:26,013 INFO L87 Difference]: Start difference. First operand 731 states and 2236 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:28,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:28,380 INFO L93 Difference]: Finished difference Result 986 states and 2814 transitions. [2022-11-23 14:20:28,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:20:28,381 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:28,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:28,383 INFO L225 Difference]: With dead ends: 986 [2022-11-23 14:20:28,383 INFO L226 Difference]: Without dead ends: 979 [2022-11-23 14:20:28,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:20:28,384 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 239 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 753 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:28,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 0 Invalid, 753 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 742 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:20:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 979 states. [2022-11-23 14:20:28,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 979 to 709. [2022-11-23 14:20:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 3.0494350282485874) internal successors, (2159), 708 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:28,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 2159 transitions. [2022-11-23 14:20:28,401 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 2159 transitions. Word has length 36 [2022-11-23 14:20:28,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:28,402 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 2159 transitions. [2022-11-23 14:20:28,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:28,402 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 2159 transitions. [2022-11-23 14:20:28,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:28,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:28,403 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] [2022-11-23 14:20:28,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-23 14:20:28,404 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:28,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:28,404 INFO L85 PathProgramCache]: Analyzing trace with hash -672022747, now seen corresponding path program 30 times [2022-11-23 14:20:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:28,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754119463] [2022-11-23 14:20:28,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:28,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:30,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:30,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754119463] [2022-11-23 14:20:30,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754119463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:30,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:30,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:20:30,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658025669] [2022-11-23 14:20:30,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:30,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:20:30,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:30,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:20:30,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:20:30,128 INFO L87 Difference]: Start difference. First operand 709 states and 2159 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:32,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:32,281 INFO L93 Difference]: Finished difference Result 1254 states and 3631 transitions. [2022-11-23 14:20:32,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:20:32,282 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:32,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:32,285 INFO L225 Difference]: With dead ends: 1254 [2022-11-23 14:20:32,285 INFO L226 Difference]: Without dead ends: 1247 [2022-11-23 14:20:32,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:20:32,287 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 292 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:32,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 0 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:20:32,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1247 states. [2022-11-23 14:20:32,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1247 to 718. [2022-11-23 14:20:32,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 3.0613668061366806) internal successors, (2195), 717 states have internal predecessors, (2195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:32,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 2195 transitions. [2022-11-23 14:20:32,324 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 2195 transitions. Word has length 36 [2022-11-23 14:20:32,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:32,325 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 2195 transitions. [2022-11-23 14:20:32,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:32,325 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 2195 transitions. [2022-11-23 14:20:32,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:32,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:32,328 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] [2022-11-23 14:20:32,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-23 14:20:32,328 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:32,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:32,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1265179573, now seen corresponding path program 31 times [2022-11-23 14:20:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:32,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527533660] [2022-11-23 14:20:32,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:32,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:34,042 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:34,043 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:34,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527533660] [2022-11-23 14:20:34,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527533660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:34,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:34,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:20:34,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034811764] [2022-11-23 14:20:34,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:34,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:20:34,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:34,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:20:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:20:34,047 INFO L87 Difference]: Start difference. First operand 718 states and 2195 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:36,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:36,144 INFO L93 Difference]: Finished difference Result 1330 states and 3874 transitions. [2022-11-23 14:20:36,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:20:36,151 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:36,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:36,154 INFO L225 Difference]: With dead ends: 1330 [2022-11-23 14:20:36,154 INFO L226 Difference]: Without dead ends: 1323 [2022-11-23 14:20:36,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:20:36,155 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 293 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:36,156 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 0 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:20:36,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1323 states. [2022-11-23 14:20:36,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1323 to 736. [2022-11-23 14:20:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 3.074829931972789) internal successors, (2260), 735 states have internal predecessors, (2260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:36,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 2260 transitions. [2022-11-23 14:20:36,186 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 2260 transitions. Word has length 36 [2022-11-23 14:20:36,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:36,186 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 2260 transitions. [2022-11-23 14:20:36,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:36,187 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 2260 transitions. [2022-11-23 14:20:36,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:36,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:36,189 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] [2022-11-23 14:20:36,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-23 14:20:36,190 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:36,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:36,191 INFO L85 PathProgramCache]: Analyzing trace with hash -963412401, now seen corresponding path program 32 times [2022-11-23 14:20:36,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:36,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420810841] [2022-11-23 14:20:36,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:36,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:38,083 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:38,084 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:38,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420810841] [2022-11-23 14:20:38,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420810841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:38,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:38,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:20:38,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184191827] [2022-11-23 14:20:38,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:38,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:20:38,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:38,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:20:38,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:20:38,086 INFO L87 Difference]: Start difference. First operand 736 states and 2260 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:40,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:40,330 INFO L93 Difference]: Finished difference Result 1312 states and 3840 transitions. [2022-11-23 14:20:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:20:40,330 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:40,333 INFO L225 Difference]: With dead ends: 1312 [2022-11-23 14:20:40,333 INFO L226 Difference]: Without dead ends: 1305 [2022-11-23 14:20:40,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:20:40,334 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 282 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 729 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:40,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 0 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 729 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:20:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-11-23 14:20:40,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 712. [2022-11-23 14:20:40,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 3.060478199718706) internal successors, (2176), 711 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2176 transitions. [2022-11-23 14:20:40,354 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2176 transitions. Word has length 36 [2022-11-23 14:20:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:40,355 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 2176 transitions. [2022-11-23 14:20:40,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:40,355 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2176 transitions. [2022-11-23 14:20:40,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:40,357 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:40,358 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] [2022-11-23 14:20:40,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-23 14:20:40,358 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:40,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:40,359 INFO L85 PathProgramCache]: Analyzing trace with hash -712849575, now seen corresponding path program 33 times [2022-11-23 14:20:40,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:40,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056898393] [2022-11-23 14:20:40,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:40,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:40,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:42,391 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:42,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056898393] [2022-11-23 14:20:42,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1056898393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:42,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:42,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:20:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261466931] [2022-11-23 14:20:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:42,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:20:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:20:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:20:42,394 INFO L87 Difference]: Start difference. First operand 712 states and 2176 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:47,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:47,468 INFO L93 Difference]: Finished difference Result 1508 states and 4259 transitions. [2022-11-23 14:20:47,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 14:20:47,469 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:47,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:47,473 INFO L225 Difference]: With dead ends: 1508 [2022-11-23 14:20:47,473 INFO L226 Difference]: Without dead ends: 1501 [2022-11-23 14:20:47,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=368, Invalid=822, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:20:47,474 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 483 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1246 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 483 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:47,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [483 Valid, 0 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1246 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-23 14:20:47,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1501 states. [2022-11-23 14:20:47,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1501 to 720. [2022-11-23 14:20:47,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 3.062586926286509) internal successors, (2202), 719 states have internal predecessors, (2202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:47,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 2202 transitions. [2022-11-23 14:20:47,498 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 2202 transitions. Word has length 36 [2022-11-23 14:20:47,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:47,499 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 2202 transitions. [2022-11-23 14:20:47,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:47,499 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 2202 transitions. [2022-11-23 14:20:47,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:47,500 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:47,500 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] [2022-11-23 14:20:47,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-23 14:20:47,501 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:47,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:47,501 INFO L85 PathProgramCache]: Analyzing trace with hash -701969013, now seen corresponding path program 34 times [2022-11-23 14:20:47,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:47,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11355719] [2022-11-23 14:20:47,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:47,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:47,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:49,062 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:49,062 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:49,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11355719] [2022-11-23 14:20:49,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11355719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:49,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:49,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:20:49,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909355067] [2022-11-23 14:20:49,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:49,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:20:49,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:49,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:20:49,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:20:49,064 INFO L87 Difference]: Start difference. First operand 720 states and 2202 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:50,790 INFO L93 Difference]: Finished difference Result 1245 states and 3564 transitions. [2022-11-23 14:20:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:20:50,791 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:50,793 INFO L225 Difference]: With dead ends: 1245 [2022-11-23 14:20:50,793 INFO L226 Difference]: Without dead ends: 1238 [2022-11-23 14:20:50,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:20:50,794 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 280 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:50,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:20:50,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-11-23 14:20:50,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 715. [2022-11-23 14:20:50,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 3.065826330532213) internal successors, (2189), 714 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:50,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 2189 transitions. [2022-11-23 14:20:50,815 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 2189 transitions. Word has length 36 [2022-11-23 14:20:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:50,815 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 2189 transitions. [2022-11-23 14:20:50,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:50,815 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 2189 transitions. [2022-11-23 14:20:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:50,816 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:50,816 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] [2022-11-23 14:20:50,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-23 14:20:50,817 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:50,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:50,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1390482371, now seen corresponding path program 35 times [2022-11-23 14:20:50,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:50,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332089333] [2022-11-23 14:20:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:50,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:53,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:53,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:53,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332089333] [2022-11-23 14:20:53,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332089333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:53,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:53,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:20:53,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423818402] [2022-11-23 14:20:53,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:53,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:20:53,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:53,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:20:53,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:20:53,440 INFO L87 Difference]: Start difference. First operand 715 states and 2189 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:56,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:20:56,310 INFO L93 Difference]: Finished difference Result 1450 states and 4144 transitions. [2022-11-23 14:20:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:20:56,311 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:20:56,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:20:56,314 INFO L225 Difference]: With dead ends: 1450 [2022-11-23 14:20:56,314 INFO L226 Difference]: Without dead ends: 1436 [2022-11-23 14:20:56,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=220, Invalid=536, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:20:56,315 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 427 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 427 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:20:56,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [427 Valid, 0 Invalid, 943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-23 14:20:56,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1436 states. [2022-11-23 14:20:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1436 to 715. [2022-11-23 14:20:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 3.065826330532213) internal successors, (2189), 714 states have internal predecessors, (2189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 2189 transitions. [2022-11-23 14:20:56,348 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 2189 transitions. Word has length 36 [2022-11-23 14:20:56,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:20:56,349 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 2189 transitions. [2022-11-23 14:20:56,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:20:56,349 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 2189 transitions. [2022-11-23 14:20:56,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:20:56,351 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:20:56,352 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] [2022-11-23 14:20:56,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-23 14:20:56,352 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:20:56,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:20:56,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1026414573, now seen corresponding path program 36 times [2022-11-23 14:20:56,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:20:56,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064712680] [2022-11-23 14:20:56,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:20:56,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:20:56,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:20:58,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:20:58,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:20:58,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064712680] [2022-11-23 14:20:58,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064712680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:20:58,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:20:58,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:20:58,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651494082] [2022-11-23 14:20:58,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:20:58,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:20:58,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:20:58,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:20:58,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:20:58,543 INFO L87 Difference]: Start difference. First operand 715 states and 2189 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:04,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:04,096 INFO L93 Difference]: Finished difference Result 1722 states and 4974 transitions. [2022-11-23 14:21:04,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 14:21:04,097 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:04,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:04,101 INFO L225 Difference]: With dead ends: 1722 [2022-11-23 14:21:04,101 INFO L226 Difference]: Without dead ends: 1715 [2022-11-23 14:21:04,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=422, Invalid=910, Unknown=0, NotChecked=0, Total=1332 [2022-11-23 14:21:04,102 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 441 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1427 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:04,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 0 Invalid, 1454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1427 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 14:21:04,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2022-11-23 14:21:04,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 725. [2022-11-23 14:21:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 724 states have (on average 3.0787292817679557) internal successors, (2229), 724 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:04,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 2229 transitions. [2022-11-23 14:21:04,124 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 2229 transitions. Word has length 36 [2022-11-23 14:21:04,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:04,124 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 2229 transitions. [2022-11-23 14:21:04,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:04,125 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 2229 transitions. [2022-11-23 14:21:04,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:04,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:04,126 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] [2022-11-23 14:21:04,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-23 14:21:04,127 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:04,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:04,127 INFO L85 PathProgramCache]: Analyzing trace with hash -724647401, now seen corresponding path program 37 times [2022-11-23 14:21:04,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:04,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267540710] [2022-11-23 14:21:04,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:04,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:04,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:06,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:06,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267540710] [2022-11-23 14:21:06,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267540710] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:06,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:06,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 14:21:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075155361] [2022-11-23 14:21:06,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:06,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:21:06,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:06,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:21:06,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:21:06,234 INFO L87 Difference]: Start difference. First operand 725 states and 2229 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:07,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:07,965 INFO L93 Difference]: Finished difference Result 1442 states and 4304 transitions. [2022-11-23 14:21:07,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:21:07,966 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:07,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:07,968 INFO L225 Difference]: With dead ends: 1442 [2022-11-23 14:21:07,969 INFO L226 Difference]: Without dead ends: 1435 [2022-11-23 14:21:07,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:21:07,969 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 333 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:07,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 0 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:21:07,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2022-11-23 14:21:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 770. [2022-11-23 14:21:08,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 3.139141742522757) internal successors, (2414), 769 states have internal predecessors, (2414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:08,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2414 transitions. [2022-11-23 14:21:08,022 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2414 transitions. Word has length 36 [2022-11-23 14:21:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:08,022 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2414 transitions. [2022-11-23 14:21:08,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2414 transitions. [2022-11-23 14:21:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:08,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:08,025 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] [2022-11-23 14:21:08,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-23 14:21:08,026 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:08,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:08,027 INFO L85 PathProgramCache]: Analyzing trace with hash 1730668405, now seen corresponding path program 38 times [2022-11-23 14:21:08,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:08,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91652287] [2022-11-23 14:21:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:08,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:08,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:10,309 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:10,310 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:10,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91652287] [2022-11-23 14:21:10,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91652287] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:10,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:10,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:21:10,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495720902] [2022-11-23 14:21:10,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:10,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:21:10,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:10,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:21:10,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:21:10,312 INFO L87 Difference]: Start difference. First operand 770 states and 2414 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:16,524 INFO L93 Difference]: Finished difference Result 1797 states and 5254 transitions. [2022-11-23 14:21:16,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 14:21:16,525 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:16,529 INFO L225 Difference]: With dead ends: 1797 [2022-11-23 14:21:16,529 INFO L226 Difference]: Without dead ends: 1790 [2022-11-23 14:21:16,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=443, Invalid=963, Unknown=0, NotChecked=0, Total=1406 [2022-11-23 14:21:16,530 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 501 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1301 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:16,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 0 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1301 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 14:21:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-11-23 14:21:16,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 769. [2022-11-23 14:21:16,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 3.1458333333333335) internal successors, (2416), 768 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:16,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2416 transitions. [2022-11-23 14:21:16,556 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2416 transitions. Word has length 36 [2022-11-23 14:21:16,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:16,556 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 2416 transitions. [2022-11-23 14:21:16,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:16,556 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2416 transitions. [2022-11-23 14:21:16,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:16,557 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:16,558 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] [2022-11-23 14:21:16,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-23 14:21:16,558 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:16,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:16,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1604667743, now seen corresponding path program 39 times [2022-11-23 14:21:16,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:16,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100379311] [2022-11-23 14:21:16,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:16,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:18,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:18,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:18,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100379311] [2022-11-23 14:21:18,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100379311] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:18,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:18,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:21:18,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724198753] [2022-11-23 14:21:18,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:18,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:21:18,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:18,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:21:18,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:21:18,551 INFO L87 Difference]: Start difference. First operand 769 states and 2416 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:20,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:20,383 INFO L93 Difference]: Finished difference Result 1432 states and 4245 transitions. [2022-11-23 14:21:20,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:21:20,384 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:20,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:20,387 INFO L225 Difference]: With dead ends: 1432 [2022-11-23 14:21:20,387 INFO L226 Difference]: Without dead ends: 1425 [2022-11-23 14:21:20,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:21:20,388 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 318 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:20,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 0 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:21:20,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1425 states. [2022-11-23 14:21:20,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1425 to 769. [2022-11-23 14:21:20,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 3.1458333333333335) internal successors, (2416), 768 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:20,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2416 transitions. [2022-11-23 14:21:20,409 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2416 transitions. Word has length 36 [2022-11-23 14:21:20,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:20,409 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 2416 transitions. [2022-11-23 14:21:20,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:20,409 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2416 transitions. [2022-11-23 14:21:20,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:20,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:20,411 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] [2022-11-23 14:21:20,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-23 14:21:20,412 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:20,413 INFO L85 PathProgramCache]: Analyzing trace with hash 1696492503, now seen corresponding path program 40 times [2022-11-23 14:21:20,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:20,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363217130] [2022-11-23 14:21:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:20,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:22,533 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:22,533 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:22,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363217130] [2022-11-23 14:21:22,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363217130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:22,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:22,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:21:22,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430165804] [2022-11-23 14:21:22,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:22,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:21:22,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:22,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:21:22,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:21:22,535 INFO L87 Difference]: Start difference. First operand 769 states and 2416 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:25,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:25,703 INFO L93 Difference]: Finished difference Result 1563 states and 4587 transitions. [2022-11-23 14:21:25,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:21:25,704 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:25,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:25,707 INFO L225 Difference]: With dead ends: 1563 [2022-11-23 14:21:25,707 INFO L226 Difference]: Without dead ends: 1549 [2022-11-23 14:21:25,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:21:25,708 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 393 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1039 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 393 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1039 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:25,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [393 Valid, 0 Invalid, 1063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1039 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-23 14:21:25,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2022-11-23 14:21:25,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 769. [2022-11-23 14:21:25,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 3.1458333333333335) internal successors, (2416), 768 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2416 transitions. [2022-11-23 14:21:25,737 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2416 transitions. Word has length 36 [2022-11-23 14:21:25,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:25,737 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 2416 transitions. [2022-11-23 14:21:25,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:25,738 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2416 transitions. [2022-11-23 14:21:25,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:25,740 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:25,740 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] [2022-11-23 14:21:25,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-23 14:21:25,741 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:25,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:25,741 INFO L85 PathProgramCache]: Analyzing trace with hash 537710117, now seen corresponding path program 41 times [2022-11-23 14:21:25,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:25,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432678305] [2022-11-23 14:21:25,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:25,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:27,514 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:27,514 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:27,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432678305] [2022-11-23 14:21:27,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432678305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:27,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:27,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:21:27,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853151075] [2022-11-23 14:21:27,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:27,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:21:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:27,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:21:27,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:21:27,516 INFO L87 Difference]: Start difference. First operand 769 states and 2416 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:29,044 INFO L93 Difference]: Finished difference Result 1378 states and 4126 transitions. [2022-11-23 14:21:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:21:29,044 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:29,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:29,047 INFO L225 Difference]: With dead ends: 1378 [2022-11-23 14:21:29,047 INFO L226 Difference]: Without dead ends: 1371 [2022-11-23 14:21:29,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:21:29,048 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 259 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:29,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 0 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:21:29,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1371 states. [2022-11-23 14:21:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1371 to 778. [2022-11-23 14:21:29,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 3.144144144144144) internal successors, (2443), 777 states have internal predecessors, (2443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:29,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2443 transitions. [2022-11-23 14:21:29,067 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2443 transitions. Word has length 36 [2022-11-23 14:21:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:29,067 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 2443 transitions. [2022-11-23 14:21:29,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2443 transitions. [2022-11-23 14:21:29,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:29,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:29,069 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] [2022-11-23 14:21:29,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-23 14:21:29,070 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:29,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:29,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1825435559, now seen corresponding path program 42 times [2022-11-23 14:21:29,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:29,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220586851] [2022-11-23 14:21:29,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:29,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:30,689 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:30,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220586851] [2022-11-23 14:21:30,689 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220586851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:30,689 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:30,689 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:21:30,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785978069] [2022-11-23 14:21:30,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:30,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:21:30,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:30,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:21:30,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:21:30,690 INFO L87 Difference]: Start difference. First operand 778 states and 2443 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:31,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:31,975 INFO L93 Difference]: Finished difference Result 1371 states and 4111 transitions. [2022-11-23 14:21:31,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:21:31,975 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:31,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:31,979 INFO L225 Difference]: With dead ends: 1371 [2022-11-23 14:21:31,979 INFO L226 Difference]: Without dead ends: 1357 [2022-11-23 14:21:31,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:21:31,982 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 322 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:31,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 0 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:21:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1357 states. [2022-11-23 14:21:32,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1357 to 769. [2022-11-23 14:21:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 3.1458333333333335) internal successors, (2416), 768 states have internal predecessors, (2416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:32,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 2416 transitions. [2022-11-23 14:21:32,005 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 2416 transitions. Word has length 36 [2022-11-23 14:21:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:32,005 INFO L495 AbstractCegarLoop]: Abstraction has 769 states and 2416 transitions. [2022-11-23 14:21:32,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 2416 transitions. [2022-11-23 14:21:32,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:32,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:32,007 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] [2022-11-23 14:21:32,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-23 14:21:32,008 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:32,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:32,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1274910395, now seen corresponding path program 43 times [2022-11-23 14:21:32,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:32,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908790653] [2022-11-23 14:21:32,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:32,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:34,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:34,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908790653] [2022-11-23 14:21:34,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908790653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:34,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:34,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:21:34,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815098702] [2022-11-23 14:21:34,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:34,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:21:34,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:21:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:21:34,191 INFO L87 Difference]: Start difference. First operand 769 states and 2416 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:37,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:37,147 INFO L93 Difference]: Finished difference Result 1510 states and 4453 transitions. [2022-11-23 14:21:37,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-23 14:21:37,148 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:37,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:37,151 INFO L225 Difference]: With dead ends: 1510 [2022-11-23 14:21:37,151 INFO L226 Difference]: Without dead ends: 1496 [2022-11-23 14:21:37,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=219, Invalid=537, Unknown=0, NotChecked=0, Total=756 [2022-11-23 14:21:37,152 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 400 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1076 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:37,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 0 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1076 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 14:21:37,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1496 states. [2022-11-23 14:21:37,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1496 to 754. [2022-11-23 14:21:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 3.1181938911022575) internal successors, (2348), 753 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:37,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2348 transitions. [2022-11-23 14:21:37,171 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2348 transitions. Word has length 36 [2022-11-23 14:21:37,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:37,172 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 2348 transitions. [2022-11-23 14:21:37,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:37,172 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2348 transitions. [2022-11-23 14:21:37,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:37,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:37,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:21:37,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-23 14:21:37,174 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:37,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:37,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1374668597, now seen corresponding path program 44 times [2022-11-23 14:21:37,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:37,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279414512] [2022-11-23 14:21:37,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:37,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:39,080 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:39,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279414512] [2022-11-23 14:21:39,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279414512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:39,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:39,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:21:39,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346591614] [2022-11-23 14:21:39,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:39,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:21:39,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:39,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:21:39,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:21:39,082 INFO L87 Difference]: Start difference. First operand 754 states and 2348 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:47,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:47,415 INFO L93 Difference]: Finished difference Result 2122 states and 6218 transitions. [2022-11-23 14:21:47,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-23 14:21:47,415 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:47,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:47,419 INFO L225 Difference]: With dead ends: 2122 [2022-11-23 14:21:47,419 INFO L226 Difference]: Without dead ends: 2115 [2022-11-23 14:21:47,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=654, Invalid=1602, Unknown=0, NotChecked=0, Total=2256 [2022-11-23 14:21:47,419 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 449 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1363 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 449 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:47,420 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [449 Valid, 0 Invalid, 1407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1363 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 14:21:47,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2115 states. [2022-11-23 14:21:47,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2115 to 750. [2022-11-23 14:21:47,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 750 states, 749 states have (on average 3.1134846461949266) internal successors, (2332), 749 states have internal predecessors, (2332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:47,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 750 states to 750 states and 2332 transitions. [2022-11-23 14:21:47,440 INFO L78 Accepts]: Start accepts. Automaton has 750 states and 2332 transitions. Word has length 36 [2022-11-23 14:21:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:47,440 INFO L495 AbstractCegarLoop]: Abstraction has 750 states and 2332 transitions. [2022-11-23 14:21:47,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 750 states and 2332 transitions. [2022-11-23 14:21:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:47,443 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:47,443 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] [2022-11-23 14:21:47,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-23 14:21:47,443 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:47,444 INFO L85 PathProgramCache]: Analyzing trace with hash 85531329, now seen corresponding path program 45 times [2022-11-23 14:21:47,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:47,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953050850] [2022-11-23 14:21:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:47,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:49,115 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:49,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953050850] [2022-11-23 14:21:49,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953050850] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:49,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:49,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:21:49,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518331528] [2022-11-23 14:21:49,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:49,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:21:49,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:49,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:21:49,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:21:49,118 INFO L87 Difference]: Start difference. First operand 750 states and 2332 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:50,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:50,518 INFO L93 Difference]: Finished difference Result 1436 states and 4248 transitions. [2022-11-23 14:21:50,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:21:50,519 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:50,522 INFO L225 Difference]: With dead ends: 1436 [2022-11-23 14:21:50,522 INFO L226 Difference]: Without dead ends: 1429 [2022-11-23 14:21:50,522 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=290, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:21:50,522 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 312 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:50,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 0 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:21:50,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1429 states. [2022-11-23 14:21:50,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1429 to 736. [2022-11-23 14:21:50,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 736 states, 735 states have (on average 3.1061224489795918) internal successors, (2283), 735 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:50,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 736 states to 736 states and 2283 transitions. [2022-11-23 14:21:50,543 INFO L78 Accepts]: Start accepts. Automaton has 736 states and 2283 transitions. Word has length 36 [2022-11-23 14:21:50,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:50,543 INFO L495 AbstractCegarLoop]: Abstraction has 736 states and 2283 transitions. [2022-11-23 14:21:50,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:50,544 INFO L276 IsEmpty]: Start isEmpty. Operand 736 states and 2283 transitions. [2022-11-23 14:21:50,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:50,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:50,546 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] [2022-11-23 14:21:50,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-11-23 14:21:50,546 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:50,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:50,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1739004817, now seen corresponding path program 46 times [2022-11-23 14:21:50,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:50,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920570285] [2022-11-23 14:21:50,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:50,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:52,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:52,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920570285] [2022-11-23 14:21:52,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920570285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:52,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:52,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:21:52,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037363354] [2022-11-23 14:21:52,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:52,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:21:52,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:52,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:21:52,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:21:52,166 INFO L87 Difference]: Start difference. First operand 736 states and 2283 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:53,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:53,770 INFO L93 Difference]: Finished difference Result 1378 states and 4071 transitions. [2022-11-23 14:21:53,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:21:53,771 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:53,773 INFO L225 Difference]: With dead ends: 1378 [2022-11-23 14:21:53,773 INFO L226 Difference]: Without dead ends: 1364 [2022-11-23 14:21:53,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:21:53,774 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:53,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:21:53,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2022-11-23 14:21:53,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 709. [2022-11-23 14:21:53,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 3.055084745762712) internal successors, (2163), 708 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:53,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 2163 transitions. [2022-11-23 14:21:53,789 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 2163 transitions. Word has length 36 [2022-11-23 14:21:53,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:53,789 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 2163 transitions. [2022-11-23 14:21:53,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:53,789 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 2163 transitions. [2022-11-23 14:21:53,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:53,791 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:53,791 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] [2022-11-23 14:21:53,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-11-23 14:21:53,791 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:53,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:53,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1941843667, now seen corresponding path program 47 times [2022-11-23 14:21:53,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:53,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146399181] [2022-11-23 14:21:53,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:53,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:53,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:55,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:55,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:55,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146399181] [2022-11-23 14:21:55,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146399181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:55,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:55,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:21:55,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324093367] [2022-11-23 14:21:55,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:55,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:21:55,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:55,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:21:55,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:21:55,164 INFO L87 Difference]: Start difference. First operand 709 states and 2163 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:58,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:21:58,155 INFO L93 Difference]: Finished difference Result 1416 states and 4064 transitions. [2022-11-23 14:21:58,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-23 14:21:58,156 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:21:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:21:58,158 INFO L225 Difference]: With dead ends: 1416 [2022-11-23 14:21:58,158 INFO L226 Difference]: Without dead ends: 1409 [2022-11-23 14:21:58,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=311, Invalid=681, Unknown=0, NotChecked=0, Total=992 [2022-11-23 14:21:58,158 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 295 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:21:58,159 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 0 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:21:58,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1409 states. [2022-11-23 14:21:58,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1409 to 712. [2022-11-23 14:21:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 3.060478199718706) internal successors, (2176), 711 states have internal predecessors, (2176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:58,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2176 transitions. [2022-11-23 14:21:58,181 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2176 transitions. Word has length 36 [2022-11-23 14:21:58,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:21:58,181 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 2176 transitions. [2022-11-23 14:21:58,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:21:58,181 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2176 transitions. [2022-11-23 14:21:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:21:58,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:21:58,183 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] [2022-11-23 14:21:58,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-11-23 14:21:58,184 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:21:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:21:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1264210871, now seen corresponding path program 48 times [2022-11-23 14:21:58,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:21:58,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919454732] [2022-11-23 14:21:58,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:21:58,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:21:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:21:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:21:59,609 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:21:59,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919454732] [2022-11-23 14:21:59,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919454732] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:21:59,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:21:59,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:21:59,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631073408] [2022-11-23 14:21:59,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:21:59,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:21:59,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:21:59,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:21:59,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:21:59,610 INFO L87 Difference]: Start difference. First operand 712 states and 2176 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:01,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:01,624 INFO L93 Difference]: Finished difference Result 1319 states and 3827 transitions. [2022-11-23 14:22:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:22:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:01,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:01,627 INFO L225 Difference]: With dead ends: 1319 [2022-11-23 14:22:01,627 INFO L226 Difference]: Without dead ends: 1305 [2022-11-23 14:22:01,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=181, Invalid=419, Unknown=0, NotChecked=0, Total=600 [2022-11-23 14:22:01,627 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 318 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:01,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 0 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:22:01,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2022-11-23 14:22:01,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 694. [2022-11-23 14:22:01,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 693 states have (on average 3.04040404040404) internal successors, (2107), 693 states have internal predecessors, (2107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:01,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 2107 transitions. [2022-11-23 14:22:01,646 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 2107 transitions. Word has length 36 [2022-11-23 14:22:01,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:01,647 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 2107 transitions. [2022-11-23 14:22:01,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:01,647 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 2107 transitions. [2022-11-23 14:22:01,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:01,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:01,649 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] [2022-11-23 14:22:01,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-11-23 14:22:01,649 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:01,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:01,650 INFO L85 PathProgramCache]: Analyzing trace with hash -612314629, now seen corresponding path program 49 times [2022-11-23 14:22:01,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:01,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832422252] [2022-11-23 14:22:01,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:04,457 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:04,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832422252] [2022-11-23 14:22:04,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832422252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:04,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:04,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:22:04,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587008808] [2022-11-23 14:22:04,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:04,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:22:04,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:04,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:22:04,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:22:04,460 INFO L87 Difference]: Start difference. First operand 694 states and 2107 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:09,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:09,116 INFO L93 Difference]: Finished difference Result 1430 states and 4105 transitions. [2022-11-23 14:22:09,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:22:09,117 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:09,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:09,119 INFO L225 Difference]: With dead ends: 1430 [2022-11-23 14:22:09,120 INFO L226 Difference]: Without dead ends: 1415 [2022-11-23 14:22:09,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=312, Invalid=878, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:22:09,120 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 431 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:09,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 0 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-23 14:22:09,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1415 states. [2022-11-23 14:22:09,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1415 to 685. [2022-11-23 14:22:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 684 states have (on average 3.0482456140350878) internal successors, (2085), 684 states have internal predecessors, (2085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 2085 transitions. [2022-11-23 14:22:09,136 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 2085 transitions. Word has length 36 [2022-11-23 14:22:09,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:09,137 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 2085 transitions. [2022-11-23 14:22:09,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:09,137 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 2085 transitions. [2022-11-23 14:22:09,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:09,139 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:09,139 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] [2022-11-23 14:22:09,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-11-23 14:22:09,139 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:09,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:09,140 INFO L85 PathProgramCache]: Analyzing trace with hash -88129773, now seen corresponding path program 50 times [2022-11-23 14:22:09,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:09,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347880962] [2022-11-23 14:22:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:09,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:11,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:11,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:11,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347880962] [2022-11-23 14:22:11,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347880962] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:11,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:11,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 14:22:11,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305702099] [2022-11-23 14:22:11,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:11,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 14:22:11,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:11,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 14:22:11,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:22:11,738 INFO L87 Difference]: Start difference. First operand 685 states and 2085 transitions. Second operand has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:16,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:16,791 INFO L93 Difference]: Finished difference Result 1004 states and 2739 transitions. [2022-11-23 14:22:16,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-23 14:22:16,792 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:16,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:16,793 INFO L225 Difference]: With dead ends: 1004 [2022-11-23 14:22:16,794 INFO L226 Difference]: Without dead ends: 997 [2022-11-23 14:22:16,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=367, Invalid=823, Unknown=0, NotChecked=0, Total=1190 [2022-11-23 14:22:16,794 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 383 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:16,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 0 Invalid, 1148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-23 14:22:16,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2022-11-23 14:22:16,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 690. [2022-11-23 14:22:16,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 3.0449927431059507) internal successors, (2098), 689 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 2098 transitions. [2022-11-23 14:22:16,808 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 2098 transitions. Word has length 36 [2022-11-23 14:22:16,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:16,808 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 2098 transitions. [2022-11-23 14:22:16,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 2098 transitions. [2022-11-23 14:22:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:16,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:16,809 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] [2022-11-23 14:22:16,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-11-23 14:22:16,809 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:16,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash 813559549, now seen corresponding path program 51 times [2022-11-23 14:22:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:16,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527023525] [2022-11-23 14:22:16,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:16,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:16,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:18,145 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:18,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527023525] [2022-11-23 14:22:18,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527023525] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:18,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:18,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:22:18,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363223536] [2022-11-23 14:22:18,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:18,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:22:18,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:18,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:22:18,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:22:18,147 INFO L87 Difference]: Start difference. First operand 690 states and 2098 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:19,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:19,693 INFO L93 Difference]: Finished difference Result 940 states and 2597 transitions. [2022-11-23 14:22:19,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:22:19,695 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:19,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:19,697 INFO L225 Difference]: With dead ends: 940 [2022-11-23 14:22:19,697 INFO L226 Difference]: Without dead ends: 926 [2022-11-23 14:22:19,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:22:19,698 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 242 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:19,698 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 0 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 716 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:22:19,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2022-11-23 14:22:19,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 678. [2022-11-23 14:22:19,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 3.056129985228951) internal successors, (2069), 677 states have internal predecessors, (2069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:19,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 2069 transitions. [2022-11-23 14:22:19,715 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 2069 transitions. Word has length 36 [2022-11-23 14:22:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:19,715 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 2069 transitions. [2022-11-23 14:22:19,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 2069 transitions. [2022-11-23 14:22:19,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:19,717 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:19,717 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] [2022-11-23 14:22:19,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-11-23 14:22:19,717 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:19,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash 202195615, now seen corresponding path program 52 times [2022-11-23 14:22:19,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:19,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638182292] [2022-11-23 14:22:19,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:19,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:19,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:21,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:21,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638182292] [2022-11-23 14:22:21,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638182292] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:21,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:21,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-23 14:22:21,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407492787] [2022-11-23 14:22:21,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:21,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 14:22:21,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:21,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 14:22:21,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:22:21,020 INFO L87 Difference]: Start difference. First operand 678 states and 2069 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:23,303 INFO L93 Difference]: Finished difference Result 2002 states and 5722 transitions. [2022-11-23 14:22:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-23 14:22:23,303 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:23,307 INFO L225 Difference]: With dead ends: 2002 [2022-11-23 14:22:23,307 INFO L226 Difference]: Without dead ends: 1995 [2022-11-23 14:22:23,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2022-11-23 14:22:23,308 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 311 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1051 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1051 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:23,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 0 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1051 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-23 14:22:23,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1995 states. [2022-11-23 14:22:23,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1995 to 668. [2022-11-23 14:22:23,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 3.0539730134932532) internal successors, (2037), 667 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2037 transitions. [2022-11-23 14:22:23,339 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 2037 transitions. Word has length 36 [2022-11-23 14:22:23,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:23,339 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 2037 transitions. [2022-11-23 14:22:23,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 2037 transitions. [2022-11-23 14:22:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:23,342 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:23,342 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] [2022-11-23 14:22:23,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-11-23 14:22:23,342 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:23,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:23,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1241463191, now seen corresponding path program 53 times [2022-11-23 14:22:23,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:23,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458380137] [2022-11-23 14:22:23,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:23,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:24,995 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:24,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458380137] [2022-11-23 14:22:24,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458380137] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:24,996 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:24,996 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:22:24,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399229881] [2022-11-23 14:22:24,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:24,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:22:24,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:24,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:22:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:22:24,998 INFO L87 Difference]: Start difference. First operand 668 states and 2037 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:26,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:26,978 INFO L93 Difference]: Finished difference Result 1095 states and 3094 transitions. [2022-11-23 14:22:26,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:22:26,979 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:26,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:26,981 INFO L225 Difference]: With dead ends: 1095 [2022-11-23 14:22:26,982 INFO L226 Difference]: Without dead ends: 1088 [2022-11-23 14:22:26,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:22:26,982 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:26,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-23 14:22:26,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2022-11-23 14:22:26,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 668. [2022-11-23 14:22:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 667 states have (on average 3.0539730134932532) internal successors, (2037), 667 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:26,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 2037 transitions. [2022-11-23 14:22:26,998 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 2037 transitions. Word has length 36 [2022-11-23 14:22:26,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:26,999 INFO L495 AbstractCegarLoop]: Abstraction has 668 states and 2037 transitions. [2022-11-23 14:22:26,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:26,999 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 2037 transitions. [2022-11-23 14:22:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:27,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:27,001 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] [2022-11-23 14:22:27,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-11-23 14:22:27,001 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:27,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:27,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1919095987, now seen corresponding path program 54 times [2022-11-23 14:22:27,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:27,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267223286] [2022-11-23 14:22:27,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:27,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:28,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:28,446 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:28,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267223286] [2022-11-23 14:22:28,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267223286] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:28,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:28,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:22:28,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613955730] [2022-11-23 14:22:28,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:28,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:22:28,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:28,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:22:28,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:22:28,448 INFO L87 Difference]: Start difference. First operand 668 states and 2037 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:30,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:30,189 INFO L93 Difference]: Finished difference Result 1110 states and 3137 transitions. [2022-11-23 14:22:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:22:30,190 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:30,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:30,192 INFO L225 Difference]: With dead ends: 1110 [2022-11-23 14:22:30,192 INFO L226 Difference]: Without dead ends: 1096 [2022-11-23 14:22:30,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=128, Invalid=292, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:22:30,193 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 304 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:30,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 0 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:22:30,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-11-23 14:22:30,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 640. [2022-11-23 14:22:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 639 states have (on average 3.0469483568075115) internal successors, (1947), 639 states have internal predecessors, (1947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:30,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 1947 transitions. [2022-11-23 14:22:30,211 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 1947 transitions. Word has length 36 [2022-11-23 14:22:30,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:30,211 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 1947 transitions. [2022-11-23 14:22:30,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:30,211 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 1947 transitions. [2022-11-23 14:22:30,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:30,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:30,213 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] [2022-11-23 14:22:30,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-11-23 14:22:30,213 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:30,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:30,214 INFO L85 PathProgramCache]: Analyzing trace with hash -534128315, now seen corresponding path program 5 times [2022-11-23 14:22:30,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:30,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769181527] [2022-11-23 14:22:30,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:30,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:30,381 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:30,381 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:30,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769181527] [2022-11-23 14:22:30,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769181527] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:30,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:30,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:22:30,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174082078] [2022-11-23 14:22:30,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:30,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:22:30,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:30,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:22:30,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:22:30,383 INFO L87 Difference]: Start difference. First operand 640 states and 1947 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:30,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:30,616 INFO L93 Difference]: Finished difference Result 911 states and 2652 transitions. [2022-11-23 14:22:30,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:22:30,617 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:30,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:30,619 INFO L225 Difference]: With dead ends: 911 [2022-11-23 14:22:30,619 INFO L226 Difference]: Without dead ends: 878 [2022-11-23 14:22:30,619 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:22:30,620 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:30,620 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:22:30,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2022-11-23 14:22:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 689. [2022-11-23 14:22:30,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 688 states have (on average 3.01453488372093) internal successors, (2074), 688 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:30,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 2074 transitions. [2022-11-23 14:22:30,636 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 2074 transitions. Word has length 36 [2022-11-23 14:22:30,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:30,636 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 2074 transitions. [2022-11-23 14:22:30,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:30,636 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 2074 transitions. [2022-11-23 14:22:30,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:30,638 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:30,638 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] [2022-11-23 14:22:30,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-11-23 14:22:30,639 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:30,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:30,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1834294640, now seen corresponding path program 1 times [2022-11-23 14:22:30,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:30,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523074577] [2022-11-23 14:22:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:30,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:30,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:32,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:32,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523074577] [2022-11-23 14:22:32,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523074577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:32,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:32,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:22:32,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632799387] [2022-11-23 14:22:32,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:32,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:22:32,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:32,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:22:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:22:32,087 INFO L87 Difference]: Start difference. First operand 689 states and 2074 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:33,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:33,133 INFO L93 Difference]: Finished difference Result 847 states and 2398 transitions. [2022-11-23 14:22:33,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:22:33,134 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:33,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:33,136 INFO L225 Difference]: With dead ends: 847 [2022-11-23 14:22:33,136 INFO L226 Difference]: Without dead ends: 818 [2022-11-23 14:22:33,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:22:33,137 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 212 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:33,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 0 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:22:33,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-11-23 14:22:33,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 735. [2022-11-23 14:22:33,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 734 states have (on average 3.0068119891008176) internal successors, (2207), 734 states have internal predecessors, (2207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:33,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 2207 transitions. [2022-11-23 14:22:33,153 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 2207 transitions. Word has length 36 [2022-11-23 14:22:33,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:33,153 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 2207 transitions. [2022-11-23 14:22:33,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:33,153 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 2207 transitions. [2022-11-23 14:22:33,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:33,155 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:33,155 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] [2022-11-23 14:22:33,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-11-23 14:22:33,155 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:33,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:33,156 INFO L85 PathProgramCache]: Analyzing trace with hash -465778018, now seen corresponding path program 2 times [2022-11-23 14:22:33,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:33,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583379156] [2022-11-23 14:22:33,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:33,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:33,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:34,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:34,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:34,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583379156] [2022-11-23 14:22:34,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583379156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:34,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:34,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:22:34,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718795588] [2022-11-23 14:22:34,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:34,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:22:34,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:34,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:22:34,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:22:34,481 INFO L87 Difference]: Start difference. First operand 735 states and 2207 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:35,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:35,534 INFO L93 Difference]: Finished difference Result 818 states and 2355 transitions. [2022-11-23 14:22:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:22:35,535 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:35,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:35,537 INFO L225 Difference]: With dead ends: 818 [2022-11-23 14:22:35,537 INFO L226 Difference]: Without dead ends: 793 [2022-11-23 14:22:35,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:22:35,537 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:35,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:22:35,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-11-23 14:22:35,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 731. [2022-11-23 14:22:35,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 730 states have (on average 3.0054794520547947) internal successors, (2194), 730 states have internal predecessors, (2194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:35,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 2194 transitions. [2022-11-23 14:22:35,552 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 2194 transitions. Word has length 36 [2022-11-23 14:22:35,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:35,553 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 2194 transitions. [2022-11-23 14:22:35,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:35,553 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 2194 transitions. [2022-11-23 14:22:35,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:35,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:35,554 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] [2022-11-23 14:22:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-11-23 14:22:35,555 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:35,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash -322884120, now seen corresponding path program 3 times [2022-11-23 14:22:35,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:35,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523041072] [2022-11-23 14:22:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:35,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:35,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:37,141 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:37,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523041072] [2022-11-23 14:22:37,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523041072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:37,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:37,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:22:37,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697773662] [2022-11-23 14:22:37,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:37,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:22:37,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:37,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:22:37,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:22:37,143 INFO L87 Difference]: Start difference. First operand 731 states and 2194 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:38,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:38,010 INFO L93 Difference]: Finished difference Result 797 states and 2315 transitions. [2022-11-23 14:22:38,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:22:38,011 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:38,013 INFO L225 Difference]: With dead ends: 797 [2022-11-23 14:22:38,013 INFO L226 Difference]: Without dead ends: 788 [2022-11-23 14:22:38,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:22:38,013 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:38,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:22:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-11-23 14:22:38,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 752. [2022-11-23 14:22:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 2.992010652463382) internal successors, (2247), 751 states have internal predecessors, (2247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2247 transitions. [2022-11-23 14:22:38,027 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2247 transitions. Word has length 36 [2022-11-23 14:22:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:38,028 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 2247 transitions. [2022-11-23 14:22:38,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:38,028 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2247 transitions. [2022-11-23 14:22:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:38,029 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:38,029 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] [2022-11-23 14:22:38,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-11-23 14:22:38,030 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:38,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:38,030 INFO L85 PathProgramCache]: Analyzing trace with hash -786039022, now seen corresponding path program 4 times [2022-11-23 14:22:38,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:38,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556872659] [2022-11-23 14:22:38,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:38,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:39,722 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:39,722 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:39,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556872659] [2022-11-23 14:22:39,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556872659] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:39,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:39,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:22:39,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632378674] [2022-11-23 14:22:39,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:39,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:22:39,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:39,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:22:39,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:22:39,723 INFO L87 Difference]: Start difference. First operand 752 states and 2247 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:40,434 INFO L93 Difference]: Finished difference Result 810 states and 2329 transitions. [2022-11-23 14:22:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:22:40,434 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:40,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:40,436 INFO L225 Difference]: With dead ends: 810 [2022-11-23 14:22:40,436 INFO L226 Difference]: Without dead ends: 793 [2022-11-23 14:22:40,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:22:40,437 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 215 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:40,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 0 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:22:40,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2022-11-23 14:22:40,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 713. [2022-11-23 14:22:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 2.9887640449438204) internal successors, (2128), 712 states have internal predecessors, (2128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:40,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2128 transitions. [2022-11-23 14:22:40,452 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2128 transitions. Word has length 36 [2022-11-23 14:22:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:40,452 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 2128 transitions. [2022-11-23 14:22:40,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:40,452 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2128 transitions. [2022-11-23 14:22:40,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:40,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:40,455 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] [2022-11-23 14:22:40,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-11-23 14:22:40,455 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:40,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:40,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1092892720, now seen corresponding path program 5 times [2022-11-23 14:22:40,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:40,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926485478] [2022-11-23 14:22:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:40,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:42,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:42,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:42,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926485478] [2022-11-23 14:22:42,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926485478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:42,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:42,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:22:42,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416753265] [2022-11-23 14:22:42,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:42,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:22:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:42,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:22:42,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:22:42,401 INFO L87 Difference]: Start difference. First operand 713 states and 2128 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:43,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:43,502 INFO L93 Difference]: Finished difference Result 784 states and 2232 transitions. [2022-11-23 14:22:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:22:43,503 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:43,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:43,506 INFO L225 Difference]: With dead ends: 784 [2022-11-23 14:22:43,506 INFO L226 Difference]: Without dead ends: 754 [2022-11-23 14:22:43,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:22:43,507 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 217 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:43,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 0 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:22:43,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-11-23 14:22:43,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 710. [2022-11-23 14:22:43,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.9605077574047955) internal successors, (2099), 709 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:43,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2099 transitions. [2022-11-23 14:22:43,536 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2099 transitions. Word has length 36 [2022-11-23 14:22:43,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:43,537 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 2099 transitions. [2022-11-23 14:22:43,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:43,537 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2099 transitions. [2022-11-23 14:22:43,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:43,539 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:43,539 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] [2022-11-23 14:22:43,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-11-23 14:22:43,540 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:43,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:43,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1543603909, now seen corresponding path program 6 times [2022-11-23 14:22:43,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:43,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840214788] [2022-11-23 14:22:43,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:43,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:43,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:43,869 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:43,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840214788] [2022-11-23 14:22:43,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840214788] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:43,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:43,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:22:43,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855992121] [2022-11-23 14:22:43,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:43,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:22:43,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:43,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:22:43,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:43,871 INFO L87 Difference]: Start difference. First operand 710 states and 2099 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:44,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:44,182 INFO L93 Difference]: Finished difference Result 932 states and 2652 transitions. [2022-11-23 14:22:44,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:22:44,183 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:44,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:44,185 INFO L225 Difference]: With dead ends: 932 [2022-11-23 14:22:44,185 INFO L226 Difference]: Without dead ends: 897 [2022-11-23 14:22:44,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:22:44,186 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 173 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:44,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 0 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:22:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2022-11-23 14:22:44,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 682. [2022-11-23 14:22:44,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 2.9456681350954477) internal successors, (2006), 681 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:44,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 2006 transitions. [2022-11-23 14:22:44,203 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 2006 transitions. Word has length 36 [2022-11-23 14:22:44,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:44,203 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 2006 transitions. [2022-11-23 14:22:44,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:44,204 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 2006 transitions. [2022-11-23 14:22:44,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:44,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:44,206 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] [2022-11-23 14:22:44,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-11-23 14:22:44,206 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:44,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:44,207 INFO L85 PathProgramCache]: Analyzing trace with hash -502379782, now seen corresponding path program 6 times [2022-11-23 14:22:44,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:44,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980283403] [2022-11-23 14:22:44,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:44,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:44,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:45,496 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:45,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980283403] [2022-11-23 14:22:45,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980283403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:45,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:45,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:22:45,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363888549] [2022-11-23 14:22:45,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:45,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:22:45,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:45,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:22:45,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:22:45,498 INFO L87 Difference]: Start difference. First operand 682 states and 2006 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:46,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:46,270 INFO L93 Difference]: Finished difference Result 781 states and 2245 transitions. [2022-11-23 14:22:46,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:22:46,270 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:46,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:46,272 INFO L225 Difference]: With dead ends: 781 [2022-11-23 14:22:46,272 INFO L226 Difference]: Without dead ends: 766 [2022-11-23 14:22:46,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:22:46,273 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 190 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:46,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 0 Invalid, 510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:22:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2022-11-23 14:22:46,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 717. [2022-11-23 14:22:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 2.9441340782122905) internal successors, (2108), 716 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:46,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2108 transitions. [2022-11-23 14:22:46,287 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2108 transitions. Word has length 36 [2022-11-23 14:22:46,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:46,288 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 2108 transitions. [2022-11-23 14:22:46,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:46,288 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2108 transitions. [2022-11-23 14:22:46,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:46,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:46,290 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] [2022-11-23 14:22:46,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-11-23 14:22:46,291 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:46,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:46,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1492514856, now seen corresponding path program 7 times [2022-11-23 14:22:46,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:46,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333050245] [2022-11-23 14:22:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:46,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:46,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:47,630 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:47,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:47,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333050245] [2022-11-23 14:22:47,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333050245] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:47,631 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:47,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:22:47,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143671542] [2022-11-23 14:22:47,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:47,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:22:47,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:47,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:22:47,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:22:47,632 INFO L87 Difference]: Start difference. First operand 717 states and 2108 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:48,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:48,352 INFO L93 Difference]: Finished difference Result 767 states and 2224 transitions. [2022-11-23 14:22:48,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:22:48,352 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:48,354 INFO L225 Difference]: With dead ends: 767 [2022-11-23 14:22:48,354 INFO L226 Difference]: Without dead ends: 754 [2022-11-23 14:22:48,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:22:48,355 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:48,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:22:48,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-11-23 14:22:48,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 713. [2022-11-23 14:22:48,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 2.9480337078651684) internal successors, (2099), 712 states have internal predecessors, (2099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2099 transitions. [2022-11-23 14:22:48,369 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2099 transitions. Word has length 36 [2022-11-23 14:22:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:48,369 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 2099 transitions. [2022-11-23 14:22:48,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2099 transitions. [2022-11-23 14:22:48,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:48,371 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:48,371 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] [2022-11-23 14:22:48,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-11-23 14:22:48,371 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:48,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:48,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1578091814, now seen corresponding path program 8 times [2022-11-23 14:22:48,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:48,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876862520] [2022-11-23 14:22:48,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:48,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:49,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:49,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:49,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876862520] [2022-11-23 14:22:49,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876862520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:49,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:49,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:22:49,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372674102] [2022-11-23 14:22:49,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:49,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:22:49,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:49,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:22:49,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:22:49,964 INFO L87 Difference]: Start difference. First operand 713 states and 2099 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:50,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:50,754 INFO L93 Difference]: Finished difference Result 794 states and 2268 transitions. [2022-11-23 14:22:50,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:22:50,755 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:50,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:50,756 INFO L225 Difference]: With dead ends: 794 [2022-11-23 14:22:50,757 INFO L226 Difference]: Without dead ends: 779 [2022-11-23 14:22:50,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:22:50,757 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 206 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:50,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 0 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:22:50,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-23 14:22:50,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 719. [2022-11-23 14:22:50,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 718 states have (on average 2.935933147632312) internal successors, (2108), 718 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:50,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 2108 transitions. [2022-11-23 14:22:50,770 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 2108 transitions. Word has length 36 [2022-11-23 14:22:50,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:50,771 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 2108 transitions. [2022-11-23 14:22:50,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:50,771 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 2108 transitions. [2022-11-23 14:22:50,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:50,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:50,774 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] [2022-11-23 14:22:50,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-11-23 14:22:50,774 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:50,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:50,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1796727468, now seen corresponding path program 9 times [2022-11-23 14:22:50,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:50,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736392320] [2022-11-23 14:22:50,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:50,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:50,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:52,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:52,004 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:52,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736392320] [2022-11-23 14:22:52,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736392320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:52,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:52,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:22:52,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995380086] [2022-11-23 14:22:52,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:52,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:22:52,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:52,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:22:52,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:22:52,005 INFO L87 Difference]: Start difference. First operand 719 states and 2108 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:52,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:52,825 INFO L93 Difference]: Finished difference Result 786 states and 2251 transitions. [2022-11-23 14:22:52,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:22:52,825 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:52,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:52,827 INFO L225 Difference]: With dead ends: 786 [2022-11-23 14:22:52,827 INFO L226 Difference]: Without dead ends: 760 [2022-11-23 14:22:52,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:22:52,828 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 137 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:52,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 0 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:22:52,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-23 14:22:52,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 713. [2022-11-23 14:22:52,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 2.942415730337079) internal successors, (2095), 712 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:52,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2095 transitions. [2022-11-23 14:22:52,841 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2095 transitions. Word has length 36 [2022-11-23 14:22:52,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:52,841 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 2095 transitions. [2022-11-23 14:22:52,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:52,841 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2095 transitions. [2022-11-23 14:22:52,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:52,843 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:52,843 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] [2022-11-23 14:22:52,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-11-23 14:22:52,843 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:52,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:52,843 INFO L85 PathProgramCache]: Analyzing trace with hash -47667782, now seen corresponding path program 10 times [2022-11-23 14:22:52,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:52,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110627570] [2022-11-23 14:22:52,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:52,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:52,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:54,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:54,103 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:54,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110627570] [2022-11-23 14:22:54,103 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110627570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:54,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:54,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:22:54,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921687169] [2022-11-23 14:22:54,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:54,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:22:54,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:54,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:22:54,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:54,105 INFO L87 Difference]: Start difference. First operand 713 states and 2095 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:54,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:54,615 INFO L93 Difference]: Finished difference Result 763 states and 2207 transitions. [2022-11-23 14:22:54,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:22:54,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:54,617 INFO L225 Difference]: With dead ends: 763 [2022-11-23 14:22:54,618 INFO L226 Difference]: Without dead ends: 754 [2022-11-23 14:22:54,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:22:54,618 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 425 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 425 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:54,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 425 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:22:54,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2022-11-23 14:22:54,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 715. [2022-11-23 14:22:54,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 2.9383753501400562) internal successors, (2098), 714 states have internal predecessors, (2098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 2098 transitions. [2022-11-23 14:22:54,631 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 2098 transitions. Word has length 36 [2022-11-23 14:22:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:54,631 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 2098 transitions. [2022-11-23 14:22:54,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 2098 transitions. [2022-11-23 14:22:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:54,633 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:54,633 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] [2022-11-23 14:22:54,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-11-23 14:22:54,633 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:54,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:54,633 INFO L85 PathProgramCache]: Analyzing trace with hash -84535834, now seen corresponding path program 11 times [2022-11-23 14:22:54,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:54,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184550855] [2022-11-23 14:22:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:54,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:55,857 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:55,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:55,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184550855] [2022-11-23 14:22:55,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184550855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:55,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:55,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:22:55,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004280735] [2022-11-23 14:22:55,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:55,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:22:55,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:55,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:22:55,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:22:55,859 INFO L87 Difference]: Start difference. First operand 715 states and 2098 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:56,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:56,413 INFO L93 Difference]: Finished difference Result 769 states and 2214 transitions. [2022-11-23 14:22:56,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:22:56,414 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:56,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:56,415 INFO L225 Difference]: With dead ends: 769 [2022-11-23 14:22:56,415 INFO L226 Difference]: Without dead ends: 743 [2022-11-23 14:22:56,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:22:56,415 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 18 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:56,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 0 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:22:56,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-23 14:22:56,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 709. [2022-11-23 14:22:56,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 708 states have (on average 2.940677966101695) internal successors, (2082), 708 states have internal predecessors, (2082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:56,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 2082 transitions. [2022-11-23 14:22:56,426 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 2082 transitions. Word has length 36 [2022-11-23 14:22:56,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:56,426 INFO L495 AbstractCegarLoop]: Abstraction has 709 states and 2082 transitions. [2022-11-23 14:22:56,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:56,426 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 2082 transitions. [2022-11-23 14:22:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:56,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:56,427 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] [2022-11-23 14:22:56,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-11-23 14:22:56,428 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:56,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:56,428 INFO L85 PathProgramCache]: Analyzing trace with hash 907441256, now seen corresponding path program 12 times [2022-11-23 14:22:56,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:56,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486602769] [2022-11-23 14:22:56,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:56,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:56,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:57,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:57,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:57,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486602769] [2022-11-23 14:22:57,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486602769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:57,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:57,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:22:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827951312] [2022-11-23 14:22:57,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:22:57,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:57,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:22:57,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:22:57,722 INFO L87 Difference]: Start difference. First operand 709 states and 2082 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:58,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:22:58,325 INFO L93 Difference]: Finished difference Result 728 states and 2116 transitions. [2022-11-23 14:22:58,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:22:58,326 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:22:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:22:58,327 INFO L225 Difference]: With dead ends: 728 [2022-11-23 14:22:58,327 INFO L226 Difference]: Without dead ends: 719 [2022-11-23 14:22:58,328 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:22:58,328 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 42 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:22:58,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 0 Invalid, 522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:22:58,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-11-23 14:22:58,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 715. [2022-11-23 14:22:58,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 2.936974789915966) internal successors, (2097), 714 states have internal predecessors, (2097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 2097 transitions. [2022-11-23 14:22:58,342 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 2097 transitions. Word has length 36 [2022-11-23 14:22:58,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:22:58,342 INFO L495 AbstractCegarLoop]: Abstraction has 715 states and 2097 transitions. [2022-11-23 14:22:58,342 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:22:58,343 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 2097 transitions. [2022-11-23 14:22:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:22:58,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:22:58,345 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] [2022-11-23 14:22:58,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-11-23 14:22:58,345 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:22:58,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:22:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash 444286354, now seen corresponding path program 13 times [2022-11-23 14:22:58,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:22:58,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911572377] [2022-11-23 14:22:58,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:22:58,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:22:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:22:59,506 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:22:59,506 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:22:59,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911572377] [2022-11-23 14:22:59,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911572377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:22:59,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:22:59,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:22:59,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681755574] [2022-11-23 14:22:59,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:22:59,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:22:59,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:22:59,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:22:59,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:22:59,508 INFO L87 Difference]: Start difference. First operand 715 states and 2097 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:00,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:00,165 INFO L93 Difference]: Finished difference Result 741 states and 2130 transitions. [2022-11-23 14:23:00,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:00,166 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:00,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:00,167 INFO L225 Difference]: With dead ends: 741 [2022-11-23 14:23:00,167 INFO L226 Difference]: Without dead ends: 724 [2022-11-23 14:23:00,168 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:00,168 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:00,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:00,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-23 14:23:00,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 712. [2022-11-23 14:23:00,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 2.938115330520394) internal successors, (2089), 711 states have internal predecessors, (2089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:00,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2089 transitions. [2022-11-23 14:23:00,182 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2089 transitions. Word has length 36 [2022-11-23 14:23:00,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:00,182 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 2089 transitions. [2022-11-23 14:23:00,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:00,183 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2089 transitions. [2022-11-23 14:23:00,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:00,185 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:00,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:00,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-11-23 14:23:00,185 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:00,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:00,186 INFO L85 PathProgramCache]: Analyzing trace with hash 87075760, now seen corresponding path program 14 times [2022-11-23 14:23:00,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:00,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450119791] [2022-11-23 14:23:00,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:00,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:01,482 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:01,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:01,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450119791] [2022-11-23 14:23:01,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450119791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:01,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:01,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:01,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397185459] [2022-11-23 14:23:01,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:01,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:01,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:01,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:01,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:01,485 INFO L87 Difference]: Start difference. First operand 712 states and 2089 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:02,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:02,057 INFO L93 Difference]: Finished difference Result 725 states and 2108 transitions. [2022-11-23 14:23:02,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:02,057 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:02,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:02,059 INFO L225 Difference]: With dead ends: 725 [2022-11-23 14:23:02,059 INFO L226 Difference]: Without dead ends: 716 [2022-11-23 14:23:02,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:02,059 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:02,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:02,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-11-23 14:23:02,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 714. [2022-11-23 14:23:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 2.934081346423562) internal successors, (2092), 713 states have internal predecessors, (2092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:02,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 2092 transitions. [2022-11-23 14:23:02,069 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 2092 transitions. Word has length 36 [2022-11-23 14:23:02,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:02,070 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 2092 transitions. [2022-11-23 14:23:02,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:02,070 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 2092 transitions. [2022-11-23 14:23:02,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:02,072 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:02,072 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] [2022-11-23 14:23:02,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-11-23 14:23:02,072 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:02,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:02,072 INFO L85 PathProgramCache]: Analyzing trace with hash 50207708, now seen corresponding path program 15 times [2022-11-23 14:23:02,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:02,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103508498] [2022-11-23 14:23:02,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:02,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:02,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:03,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:03,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:03,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103508498] [2022-11-23 14:23:03,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103508498] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:03,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:03,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:23:03,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829961016] [2022-11-23 14:23:03,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:03,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:23:03,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:03,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:23:03,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:23:03,808 INFO L87 Difference]: Start difference. First operand 714 states and 2092 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:04,472 INFO L93 Difference]: Finished difference Result 727 states and 2110 transitions. [2022-11-23 14:23:04,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:04,472 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:04,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:04,474 INFO L225 Difference]: With dead ends: 727 [2022-11-23 14:23:04,474 INFO L226 Difference]: Without dead ends: 714 [2022-11-23 14:23:04,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:23:04,474 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:04,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-11-23 14:23:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 712. [2022-11-23 14:23:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 2.9353023909985936) internal successors, (2087), 711 states have internal predecessors, (2087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:04,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 2087 transitions. [2022-11-23 14:23:04,488 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 2087 transitions. Word has length 36 [2022-11-23 14:23:04,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:04,488 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 2087 transitions. [2022-11-23 14:23:04,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:04,489 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 2087 transitions. [2022-11-23 14:23:04,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:04,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:04,491 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] [2022-11-23 14:23:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-11-23 14:23:04,491 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:04,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:04,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1422692366, now seen corresponding path program 16 times [2022-11-23 14:23:04,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:04,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168588977] [2022-11-23 14:23:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:04,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:05,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:05,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168588977] [2022-11-23 14:23:05,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168588977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:05,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:05,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:05,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158278275] [2022-11-23 14:23:05,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:05,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:05,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:05,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:05,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:05,723 INFO L87 Difference]: Start difference. First operand 712 states and 2087 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:06,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:06,368 INFO L93 Difference]: Finished difference Result 734 states and 2125 transitions. [2022-11-23 14:23:06,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:06,368 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:06,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:06,370 INFO L225 Difference]: With dead ends: 734 [2022-11-23 14:23:06,370 INFO L226 Difference]: Without dead ends: 723 [2022-11-23 14:23:06,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:06,370 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:06,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:06,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-23 14:23:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 717. [2022-11-23 14:23:06,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 2.9273743016759775) internal successors, (2096), 716 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 2096 transitions. [2022-11-23 14:23:06,384 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 2096 transitions. Word has length 36 [2022-11-23 14:23:06,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:06,384 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 2096 transitions. [2022-11-23 14:23:06,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:06,384 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 2096 transitions. [2022-11-23 14:23:06,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:06,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:06,386 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] [2022-11-23 14:23:06,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-11-23 14:23:06,387 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:06,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:06,387 INFO L85 PathProgramCache]: Analyzing trace with hash -512083634, now seen corresponding path program 17 times [2022-11-23 14:23:06,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:06,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451934553] [2022-11-23 14:23:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:06,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:07,690 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:07,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:07,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451934553] [2022-11-23 14:23:07,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451934553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:07,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:07,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:07,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179794760] [2022-11-23 14:23:07,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:07,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:07,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:07,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:07,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:07,692 INFO L87 Difference]: Start difference. First operand 717 states and 2096 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:08,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:08,338 INFO L93 Difference]: Finished difference Result 745 states and 2133 transitions. [2022-11-23 14:23:08,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:08,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:08,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:08,341 INFO L225 Difference]: With dead ends: 745 [2022-11-23 14:23:08,341 INFO L226 Difference]: Without dead ends: 723 [2022-11-23 14:23:08,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:08,342 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:08,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:08,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-23 14:23:08,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 682. [2022-11-23 14:23:08,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 2.933920704845815) internal successors, (1998), 681 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:08,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1998 transitions. [2022-11-23 14:23:08,359 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1998 transitions. Word has length 36 [2022-11-23 14:23:08,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:08,360 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1998 transitions. [2022-11-23 14:23:08,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:08,360 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1998 transitions. [2022-11-23 14:23:08,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:08,362 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:08,362 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] [2022-11-23 14:23:08,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-11-23 14:23:08,362 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:08,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:08,363 INFO L85 PathProgramCache]: Analyzing trace with hash -770564760, now seen corresponding path program 18 times [2022-11-23 14:23:08,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:08,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985226281] [2022-11-23 14:23:08,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:08,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:09,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:09,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:09,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985226281] [2022-11-23 14:23:09,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985226281] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:09,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:09,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:09,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869950156] [2022-11-23 14:23:09,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:09,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:09,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:09,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:09,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:09,860 INFO L87 Difference]: Start difference. First operand 682 states and 1998 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:10,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:10,600 INFO L93 Difference]: Finished difference Result 743 states and 2109 transitions. [2022-11-23 14:23:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:10,600 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:10,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:10,601 INFO L225 Difference]: With dead ends: 743 [2022-11-23 14:23:10,602 INFO L226 Difference]: Without dead ends: 726 [2022-11-23 14:23:10,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:10,602 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:10,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 0 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:10,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-11-23 14:23:10,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 700. [2022-11-23 14:23:10,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 699 states have (on average 2.917024320457797) internal successors, (2039), 699 states have internal predecessors, (2039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 2039 transitions. [2022-11-23 14:23:10,618 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 2039 transitions. Word has length 36 [2022-11-23 14:23:10,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:10,618 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 2039 transitions. [2022-11-23 14:23:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 2039 transitions. [2022-11-23 14:23:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:10,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:10,620 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] [2022-11-23 14:23:10,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-11-23 14:23:10,620 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:10,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1026484840, now seen corresponding path program 19 times [2022-11-23 14:23:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:10,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288554621] [2022-11-23 14:23:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:11,907 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:11,907 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:11,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288554621] [2022-11-23 14:23:11,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288554621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:11,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:11,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:11,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271014226] [2022-11-23 14:23:11,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:11,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:11,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:11,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:11,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:11,909 INFO L87 Difference]: Start difference. First operand 700 states and 2039 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:12,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:12,711 INFO L93 Difference]: Finished difference Result 717 states and 2065 transitions. [2022-11-23 14:23:12,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:12,712 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:12,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:12,714 INFO L225 Difference]: With dead ends: 717 [2022-11-23 14:23:12,714 INFO L226 Difference]: Without dead ends: 708 [2022-11-23 14:23:12,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:12,714 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 533 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 533 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:12,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 533 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:23:12,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 708 states. [2022-11-23 14:23:12,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 708 to 702. [2022-11-23 14:23:12,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 701 states have (on average 2.912981455064194) internal successors, (2042), 701 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:12,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 2042 transitions. [2022-11-23 14:23:12,727 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 2042 transitions. Word has length 36 [2022-11-23 14:23:12,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:12,727 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 2042 transitions. [2022-11-23 14:23:12,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:12,727 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 2042 transitions. [2022-11-23 14:23:12,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:12,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:12,729 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] [2022-11-23 14:23:12,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-11-23 14:23:12,729 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:12,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:12,730 INFO L85 PathProgramCache]: Analyzing trace with hash 989616788, now seen corresponding path program 20 times [2022-11-23 14:23:12,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:12,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522018900] [2022-11-23 14:23:12,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:12,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:14,480 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:14,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522018900] [2022-11-23 14:23:14,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522018900] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:14,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:14,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:14,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222206080] [2022-11-23 14:23:14,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:14,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:14,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:14,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:14,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:14,482 INFO L87 Difference]: Start difference. First operand 702 states and 2042 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:15,128 INFO L93 Difference]: Finished difference Result 719 states and 2067 transitions. [2022-11-23 14:23:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:15,129 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:15,130 INFO L225 Difference]: With dead ends: 719 [2022-11-23 14:23:15,130 INFO L226 Difference]: Without dead ends: 682 [2022-11-23 14:23:15,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:15,131 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:15,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2022-11-23 14:23:15,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 676. [2022-11-23 14:23:15,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 2.9140740740740743) internal successors, (1967), 675 states have internal predecessors, (1967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:15,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1967 transitions. [2022-11-23 14:23:15,149 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1967 transitions. Word has length 36 [2022-11-23 14:23:15,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:15,150 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 1967 transitions. [2022-11-23 14:23:15,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:15,150 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1967 transitions. [2022-11-23 14:23:15,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:15,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:15,153 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] [2022-11-23 14:23:15,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-11-23 14:23:15,153 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:15,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:15,154 INFO L85 PathProgramCache]: Analyzing trace with hash 1669832944, now seen corresponding path program 21 times [2022-11-23 14:23:15,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:15,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408640022] [2022-11-23 14:23:15,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:15,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:15,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:16,327 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:16,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408640022] [2022-11-23 14:23:16,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408640022] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:16,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:16,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:23:16,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435678585] [2022-11-23 14:23:16,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:16,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:23:16,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:16,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:23:16,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:23:16,328 INFO L87 Difference]: Start difference. First operand 676 states and 1967 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:16,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:16,920 INFO L93 Difference]: Finished difference Result 785 states and 2243 transitions. [2022-11-23 14:23:16,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:23:16,920 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:16,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:16,922 INFO L225 Difference]: With dead ends: 785 [2022-11-23 14:23:16,922 INFO L226 Difference]: Without dead ends: 770 [2022-11-23 14:23:16,923 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:23:16,923 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 159 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:16,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 0 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:16,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2022-11-23 14:23:16,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 722. [2022-11-23 14:23:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 2.9320388349514563) internal successors, (2114), 721 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:16,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 2114 transitions. [2022-11-23 14:23:16,940 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 2114 transitions. Word has length 36 [2022-11-23 14:23:16,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:16,940 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 2114 transitions. [2022-11-23 14:23:16,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:16,940 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 2114 transitions. [2022-11-23 14:23:16,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:16,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:16,942 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] [2022-11-23 14:23:16,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-11-23 14:23:16,942 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:16,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:16,943 INFO L85 PathProgramCache]: Analyzing trace with hash -630239714, now seen corresponding path program 22 times [2022-11-23 14:23:16,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:16,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224388855] [2022-11-23 14:23:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:16,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:18,372 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:18,372 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:18,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224388855] [2022-11-23 14:23:18,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224388855] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:18,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:18,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:23:18,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041923245] [2022-11-23 14:23:18,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:18,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:23:18,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:18,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:23:18,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:23:18,373 INFO L87 Difference]: Start difference. First operand 722 states and 2114 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:19,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:19,284 INFO L93 Difference]: Finished difference Result 773 states and 2222 transitions. [2022-11-23 14:23:19,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:23:19,285 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:19,286 INFO L225 Difference]: With dead ends: 773 [2022-11-23 14:23:19,287 INFO L226 Difference]: Without dead ends: 755 [2022-11-23 14:23:19,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=278, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:23:19,287 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 128 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:19,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 0 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:23:19,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-23 14:23:19,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 718. [2022-11-23 14:23:19,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 2.9358437935843793) internal successors, (2105), 717 states have internal predecessors, (2105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:19,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 2105 transitions. [2022-11-23 14:23:19,305 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 2105 transitions. Word has length 36 [2022-11-23 14:23:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:19,305 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 2105 transitions. [2022-11-23 14:23:19,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:19,305 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 2105 transitions. [2022-11-23 14:23:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:19,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:19,307 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] [2022-11-23 14:23:19,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-11-23 14:23:19,308 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:19,308 INFO L85 PathProgramCache]: Analyzing trace with hash -544662756, now seen corresponding path program 23 times [2022-11-23 14:23:19,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:19,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142459235] [2022-11-23 14:23:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:19,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:19,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:20,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:20,682 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:20,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142459235] [2022-11-23 14:23:20,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142459235] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:20,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:20,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:23:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585768638] [2022-11-23 14:23:20,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:20,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:23:20,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:20,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:23:20,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:23:20,684 INFO L87 Difference]: Start difference. First operand 718 states and 2105 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:21,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:21,363 INFO L93 Difference]: Finished difference Result 784 states and 2236 transitions. [2022-11-23 14:23:21,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:21,364 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:21,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:21,365 INFO L225 Difference]: With dead ends: 784 [2022-11-23 14:23:21,365 INFO L226 Difference]: Without dead ends: 769 [2022-11-23 14:23:21,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:23:21,366 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 205 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:21,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 0 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:21,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-11-23 14:23:21,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 724. [2022-11-23 14:23:21,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 723 states have (on average 2.9239280774550482) internal successors, (2114), 723 states have internal predecessors, (2114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:21,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 2114 transitions. [2022-11-23 14:23:21,380 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 2114 transitions. Word has length 36 [2022-11-23 14:23:21,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:21,380 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 2114 transitions. [2022-11-23 14:23:21,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:21,380 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 2114 transitions. [2022-11-23 14:23:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:21,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:21,382 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] [2022-11-23 14:23:21,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-11-23 14:23:21,383 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:21,383 INFO L85 PathProgramCache]: Analyzing trace with hash 375485258, now seen corresponding path program 24 times [2022-11-23 14:23:21,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:21,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554715243] [2022-11-23 14:23:21,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:21,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:22,528 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:22,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:22,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554715243] [2022-11-23 14:23:22,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554715243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:22,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:22,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:23:22,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541399880] [2022-11-23 14:23:22,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:22,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:23:22,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:22,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:23:22,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:23:22,530 INFO L87 Difference]: Start difference. First operand 724 states and 2114 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:23,146 INFO L93 Difference]: Finished difference Result 772 states and 2217 transitions. [2022-11-23 14:23:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:23,147 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:23,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:23,148 INFO L225 Difference]: With dead ends: 772 [2022-11-23 14:23:23,149 INFO L226 Difference]: Without dead ends: 755 [2022-11-23 14:23:23,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:23:23,149 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 136 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:23,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 0 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:23,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-23 14:23:23,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 718. [2022-11-23 14:23:23,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 717 states have (on average 2.9302649930264995) internal successors, (2101), 717 states have internal predecessors, (2101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 2101 transitions. [2022-11-23 14:23:23,162 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 2101 transitions. Word has length 36 [2022-11-23 14:23:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:23,162 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 2101 transitions. [2022-11-23 14:23:23,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:23,162 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 2101 transitions. [2022-11-23 14:23:23,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:23,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:23,165 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] [2022-11-23 14:23:23,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-11-23 14:23:23,165 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:23,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash 2124544944, now seen corresponding path program 25 times [2022-11-23 14:23:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:23,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914257210] [2022-11-23 14:23:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:24,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:24,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914257210] [2022-11-23 14:23:24,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914257210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:24,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:24,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:23:24,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055692370] [2022-11-23 14:23:24,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:24,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:23:24,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:24,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:23:24,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:23:24,440 INFO L87 Difference]: Start difference. First operand 718 states and 2101 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:24,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:24,995 INFO L93 Difference]: Finished difference Result 764 states and 2198 transitions. [2022-11-23 14:23:24,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:23:24,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:24,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:24,997 INFO L225 Difference]: With dead ends: 764 [2022-11-23 14:23:24,997 INFO L226 Difference]: Without dead ends: 753 [2022-11-23 14:23:24,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:24,998 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:24,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:24,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-11-23 14:23:25,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 720. [2022-11-23 14:23:25,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 720 states, 719 states have (on average 2.9262865090403336) internal successors, (2104), 719 states have internal predecessors, (2104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:25,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 720 states to 720 states and 2104 transitions. [2022-11-23 14:23:25,011 INFO L78 Accepts]: Start accepts. Automaton has 720 states and 2104 transitions. Word has length 36 [2022-11-23 14:23:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:25,011 INFO L495 AbstractCegarLoop]: Abstraction has 720 states and 2104 transitions. [2022-11-23 14:23:25,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:25,011 INFO L276 IsEmpty]: Start isEmpty. Operand 720 states and 2104 transitions. [2022-11-23 14:23:25,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:25,013 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:25,013 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] [2022-11-23 14:23:25,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-11-23 14:23:25,013 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:25,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:25,013 INFO L85 PathProgramCache]: Analyzing trace with hash 2087676892, now seen corresponding path program 26 times [2022-11-23 14:23:25,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:25,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647264907] [2022-11-23 14:23:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:25,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:25,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:26,075 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:26,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647264907] [2022-11-23 14:23:26,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647264907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:26,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:26,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:23:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486306382] [2022-11-23 14:23:26,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:23:26,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:23:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:23:26,076 INFO L87 Difference]: Start difference. First operand 720 states and 2104 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:26,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:26,498 INFO L93 Difference]: Finished difference Result 764 states and 2195 transitions. [2022-11-23 14:23:26,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:26,498 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:26,500 INFO L225 Difference]: With dead ends: 764 [2022-11-23 14:23:26,500 INFO L226 Difference]: Without dead ends: 742 [2022-11-23 14:23:26,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:23:26,500 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 19 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:26,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 0 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:26,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-11-23 14:23:26,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 714. [2022-11-23 14:23:26,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 714 states, 713 states have (on average 2.9284712482468445) internal successors, (2088), 713 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 714 states to 714 states and 2088 transitions. [2022-11-23 14:23:26,512 INFO L78 Accepts]: Start accepts. Automaton has 714 states and 2088 transitions. Word has length 36 [2022-11-23 14:23:26,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:26,512 INFO L495 AbstractCegarLoop]: Abstraction has 714 states and 2088 transitions. [2022-11-23 14:23:26,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:26,513 INFO L276 IsEmpty]: Start isEmpty. Operand 714 states and 2088 transitions. [2022-11-23 14:23:26,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:26,514 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:26,514 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] [2022-11-23 14:23:26,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-11-23 14:23:26,515 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:26,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:26,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1202611614, now seen corresponding path program 27 times [2022-11-23 14:23:26,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:26,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977547201] [2022-11-23 14:23:26,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:26,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:27,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:27,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977547201] [2022-11-23 14:23:27,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977547201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:27,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:27,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:23:27,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098386926] [2022-11-23 14:23:27,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:27,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:23:27,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:27,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:23:27,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:23:27,860 INFO L87 Difference]: Start difference. First operand 714 states and 2088 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:28,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:28,737 INFO L93 Difference]: Finished difference Result 916 states and 2494 transitions. [2022-11-23 14:23:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:23:28,737 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:28,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:28,738 INFO L225 Difference]: With dead ends: 916 [2022-11-23 14:23:28,739 INFO L226 Difference]: Without dead ends: 887 [2022-11-23 14:23:28,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:23:28,739 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 221 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:28,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 0 Invalid, 579 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:23:28,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-23 14:23:28,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 776. [2022-11-23 14:23:28,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 2.898064516129032) internal successors, (2246), 775 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:28,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2246 transitions. [2022-11-23 14:23:28,750 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2246 transitions. Word has length 36 [2022-11-23 14:23:28,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:28,750 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 2246 transitions. [2022-11-23 14:23:28,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:28,750 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2246 transitions. [2022-11-23 14:23:28,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:28,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:28,752 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] [2022-11-23 14:23:28,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-11-23 14:23:28,752 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:28,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:28,752 INFO L85 PathProgramCache]: Analyzing trace with hash 2122759628, now seen corresponding path program 28 times [2022-11-23 14:23:28,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:28,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241239048] [2022-11-23 14:23:28,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:28,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:30,013 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:30,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241239048] [2022-11-23 14:23:30,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241239048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:30,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:30,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:30,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151696324] [2022-11-23 14:23:30,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:30,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:30,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:30,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:30,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:30,014 INFO L87 Difference]: Start difference. First operand 776 states and 2246 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:30,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:30,806 INFO L93 Difference]: Finished difference Result 889 states and 2451 transitions. [2022-11-23 14:23:30,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:23:30,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:30,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:30,808 INFO L225 Difference]: With dead ends: 889 [2022-11-23 14:23:30,809 INFO L226 Difference]: Without dead ends: 856 [2022-11-23 14:23:30,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:23:30,809 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 556 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:30,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 556 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:30,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-11-23 14:23:30,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 770. [2022-11-23 14:23:30,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 2.8933680104031207) internal successors, (2225), 769 states have internal predecessors, (2225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:30,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2225 transitions. [2022-11-23 14:23:30,821 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2225 transitions. Word has length 36 [2022-11-23 14:23:30,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:30,821 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2225 transitions. [2022-11-23 14:23:30,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:30,821 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2225 transitions. [2022-11-23 14:23:30,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:30,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:30,822 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] [2022-11-23 14:23:30,823 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-11-23 14:23:30,823 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:30,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:30,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1913555934, now seen corresponding path program 29 times [2022-11-23 14:23:30,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:30,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272055684] [2022-11-23 14:23:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:30,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:31,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:31,891 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:31,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272055684] [2022-11-23 14:23:31,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272055684] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:31,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:31,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:23:31,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64939492] [2022-11-23 14:23:31,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:31,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:23:31,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:31,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:23:31,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:23:31,892 INFO L87 Difference]: Start difference. First operand 770 states and 2225 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:32,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:32,748 INFO L93 Difference]: Finished difference Result 991 states and 2733 transitions. [2022-11-23 14:23:32,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:23:32,748 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:32,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:32,750 INFO L225 Difference]: With dead ends: 991 [2022-11-23 14:23:32,750 INFO L226 Difference]: Without dead ends: 971 [2022-11-23 14:23:32,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:23:32,751 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 197 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:32,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 0 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:23:32,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2022-11-23 14:23:32,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 842. [2022-11-23 14:23:32,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 2.882282996432818) internal successors, (2424), 841 states have internal predecessors, (2424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:32,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 2424 transitions. [2022-11-23 14:23:32,767 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 2424 transitions. Word has length 36 [2022-11-23 14:23:32,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:32,767 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 2424 transitions. [2022-11-23 14:23:32,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:32,768 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 2424 transitions. [2022-11-23 14:23:32,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:32,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:32,769 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] [2022-11-23 14:23:32,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-11-23 14:23:32,769 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:32,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:32,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1823607444, now seen corresponding path program 30 times [2022-11-23 14:23:32,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:32,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515157407] [2022-11-23 14:23:32,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:32,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:32,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:34,092 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:34,092 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:34,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515157407] [2022-11-23 14:23:34,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515157407] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:34,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:34,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:23:34,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322314247] [2022-11-23 14:23:34,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:34,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:23:34,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:34,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:23:34,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:23:34,094 INFO L87 Difference]: Start difference. First operand 842 states and 2424 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:34,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:34,799 INFO L93 Difference]: Finished difference Result 952 states and 2644 transitions. [2022-11-23 14:23:34,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:23:34,800 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:34,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:34,801 INFO L225 Difference]: With dead ends: 952 [2022-11-23 14:23:34,801 INFO L226 Difference]: Without dead ends: 941 [2022-11-23 14:23:34,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:23:34,802 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 159 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:34,803 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 0 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:34,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2022-11-23 14:23:34,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 847. [2022-11-23 14:23:34,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 847 states, 846 states have (on average 2.875886524822695) internal successors, (2433), 846 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:34,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 2433 transitions. [2022-11-23 14:23:34,820 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 2433 transitions. Word has length 36 [2022-11-23 14:23:34,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:34,821 INFO L495 AbstractCegarLoop]: Abstraction has 847 states and 2433 transitions. [2022-11-23 14:23:34,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:34,821 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 2433 transitions. [2022-11-23 14:23:34,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:34,822 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:34,822 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] [2022-11-23 14:23:34,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-11-23 14:23:34,823 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:34,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:34,823 INFO L85 PathProgramCache]: Analyzing trace with hash 2083481032, now seen corresponding path program 31 times [2022-11-23 14:23:34,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:34,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481007144] [2022-11-23 14:23:34,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:34,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:34,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:36,100 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:36,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481007144] [2022-11-23 14:23:36,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481007144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:36,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:36,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:23:36,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040550972] [2022-11-23 14:23:36,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:36,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:23:36,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:36,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:23:36,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:23:36,103 INFO L87 Difference]: Start difference. First operand 847 states and 2433 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:36,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:36,792 INFO L93 Difference]: Finished difference Result 963 states and 2652 transitions. [2022-11-23 14:23:36,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:23:36,793 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:36,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:36,795 INFO L225 Difference]: With dead ends: 963 [2022-11-23 14:23:36,795 INFO L226 Difference]: Without dead ends: 938 [2022-11-23 14:23:36,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:23:36,795 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 191 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:36,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 0 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:36,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-11-23 14:23:36,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 792. [2022-11-23 14:23:36,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 792 states, 791 states have (on average 2.892541087231353) internal successors, (2288), 791 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:36,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 792 states to 792 states and 2288 transitions. [2022-11-23 14:23:36,811 INFO L78 Accepts]: Start accepts. Automaton has 792 states and 2288 transitions. Word has length 36 [2022-11-23 14:23:36,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:36,812 INFO L495 AbstractCegarLoop]: Abstraction has 792 states and 2288 transitions. [2022-11-23 14:23:36,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:36,812 INFO L276 IsEmpty]: Start isEmpty. Operand 792 states and 2288 transitions. [2022-11-23 14:23:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:36,814 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:36,814 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:23:36,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-11-23 14:23:36,814 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:36,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:36,814 INFO L85 PathProgramCache]: Analyzing trace with hash 2117162206, now seen corresponding path program 32 times [2022-11-23 14:23:36,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:36,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753350065] [2022-11-23 14:23:36,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:36,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:36,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:38,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:38,454 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:38,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753350065] [2022-11-23 14:23:38,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753350065] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:38,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:38,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:38,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908754877] [2022-11-23 14:23:38,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:38,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:38,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:38,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:38,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:38,455 INFO L87 Difference]: Start difference. First operand 792 states and 2288 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:39,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:39,192 INFO L93 Difference]: Finished difference Result 854 states and 2435 transitions. [2022-11-23 14:23:39,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:39,193 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:39,194 INFO L225 Difference]: With dead ends: 854 [2022-11-23 14:23:39,195 INFO L226 Difference]: Without dead ends: 845 [2022-11-23 14:23:39,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:39,195 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:39,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:39,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-11-23 14:23:39,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 812. [2022-11-23 14:23:39,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 811 states have (on average 2.8853267570900125) internal successors, (2340), 811 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:39,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 2340 transitions. [2022-11-23 14:23:39,209 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 2340 transitions. Word has length 36 [2022-11-23 14:23:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:39,209 INFO L495 AbstractCegarLoop]: Abstraction has 812 states and 2340 transitions. [2022-11-23 14:23:39,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 2340 transitions. [2022-11-23 14:23:39,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:39,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:39,211 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] [2022-11-23 14:23:39,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-11-23 14:23:39,211 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:39,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash 2080294154, now seen corresponding path program 33 times [2022-11-23 14:23:39,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:39,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688322411] [2022-11-23 14:23:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:39,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:40,451 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:40,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:40,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688322411] [2022-11-23 14:23:40,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688322411] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:40,452 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:40,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:40,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041110580] [2022-11-23 14:23:40,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:40,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:40,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:40,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:40,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:40,454 INFO L87 Difference]: Start difference. First operand 812 states and 2340 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:41,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:41,071 INFO L93 Difference]: Finished difference Result 856 states and 2437 transitions. [2022-11-23 14:23:41,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:41,071 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:41,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:41,073 INFO L225 Difference]: With dead ends: 856 [2022-11-23 14:23:41,073 INFO L226 Difference]: Without dead ends: 843 [2022-11-23 14:23:41,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:41,073 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:41,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:41,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2022-11-23 14:23:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 810. [2022-11-23 14:23:41,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 809 states have (on average 2.88380716934487) internal successors, (2333), 809 states have internal predecessors, (2333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 2333 transitions. [2022-11-23 14:23:41,085 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 2333 transitions. Word has length 36 [2022-11-23 14:23:41,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:41,086 INFO L495 AbstractCegarLoop]: Abstraction has 810 states and 2333 transitions. [2022-11-23 14:23:41,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:41,086 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 2333 transitions. [2022-11-23 14:23:41,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:41,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:41,087 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] [2022-11-23 14:23:41,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-11-23 14:23:41,087 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:41,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:41,088 INFO L85 PathProgramCache]: Analyzing trace with hash -843078260, now seen corresponding path program 34 times [2022-11-23 14:23:41,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:41,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170296348] [2022-11-23 14:23:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:41,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:42,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:42,306 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:42,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170296348] [2022-11-23 14:23:42,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1170296348] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:42,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:42,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:42,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563381713] [2022-11-23 14:23:42,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:42,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:42,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:42,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:42,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:42,308 INFO L87 Difference]: Start difference. First operand 810 states and 2333 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:43,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:43,083 INFO L93 Difference]: Finished difference Result 902 states and 2515 transitions. [2022-11-23 14:23:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:43,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:43,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:43,085 INFO L225 Difference]: With dead ends: 902 [2022-11-23 14:23:43,085 INFO L226 Difference]: Without dead ends: 882 [2022-11-23 14:23:43,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:43,086 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:43,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:43,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2022-11-23 14:23:43,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 790. [2022-11-23 14:23:43,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 790 states, 789 states have (on average 2.8783269961977185) internal successors, (2271), 789 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 790 states to 790 states and 2271 transitions. [2022-11-23 14:23:43,108 INFO L78 Accepts]: Start accepts. Automaton has 790 states and 2271 transitions. Word has length 36 [2022-11-23 14:23:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:43,108 INFO L495 AbstractCegarLoop]: Abstraction has 790 states and 2271 transitions. [2022-11-23 14:23:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 790 states and 2271 transitions. [2022-11-23 14:23:43,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:43,111 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:43,111 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] [2022-11-23 14:23:43,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-11-23 14:23:43,112 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:43,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1949167306, now seen corresponding path program 35 times [2022-11-23 14:23:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:43,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977663520] [2022-11-23 14:23:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:43,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:45,040 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:45,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:45,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977663520] [2022-11-23 14:23:45,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977663520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:45,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:45,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:45,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517066352] [2022-11-23 14:23:45,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:45,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:45,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:45,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:45,042 INFO L87 Difference]: Start difference. First operand 790 states and 2271 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:45,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:45,642 INFO L93 Difference]: Finished difference Result 832 states and 2366 transitions. [2022-11-23 14:23:45,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:45,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:45,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:45,644 INFO L225 Difference]: With dead ends: 832 [2022-11-23 14:23:45,644 INFO L226 Difference]: Without dead ends: 823 [2022-11-23 14:23:45,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:45,645 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:45,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:45,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-11-23 14:23:45,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 795. [2022-11-23 14:23:45,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 794 states have (on average 2.876574307304786) internal successors, (2284), 794 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:45,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 2284 transitions. [2022-11-23 14:23:45,659 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 2284 transitions. Word has length 36 [2022-11-23 14:23:45,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:45,660 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 2284 transitions. [2022-11-23 14:23:45,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:45,660 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 2284 transitions. [2022-11-23 14:23:45,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:45,661 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:45,661 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] [2022-11-23 14:23:45,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-11-23 14:23:45,661 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:45,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:45,662 INFO L85 PathProgramCache]: Analyzing trace with hash 1912299254, now seen corresponding path program 36 times [2022-11-23 14:23:45,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:45,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290969639] [2022-11-23 14:23:45,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:45,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:46,806 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:46,806 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:46,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290969639] [2022-11-23 14:23:46,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290969639] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:46,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:46,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:46,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708028470] [2022-11-23 14:23:46,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:46,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:46,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:46,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:46,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:46,808 INFO L87 Difference]: Start difference. First operand 795 states and 2284 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:47,388 INFO L93 Difference]: Finished difference Result 834 states and 2368 transitions. [2022-11-23 14:23:47,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:47,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:47,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:47,391 INFO L225 Difference]: With dead ends: 834 [2022-11-23 14:23:47,391 INFO L226 Difference]: Without dead ends: 821 [2022-11-23 14:23:47,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:47,392 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:47,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:47,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2022-11-23 14:23:47,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 793. [2022-11-23 14:23:47,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 2.8775252525252526) internal successors, (2279), 792 states have internal predecessors, (2279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:47,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 2279 transitions. [2022-11-23 14:23:47,405 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 2279 transitions. Word has length 36 [2022-11-23 14:23:47,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:47,406 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 2279 transitions. [2022-11-23 14:23:47,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:47,406 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2279 transitions. [2022-11-23 14:23:47,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:47,408 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:47,408 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] [2022-11-23 14:23:47,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-11-23 14:23:47,409 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:47,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:47,409 INFO L85 PathProgramCache]: Analyzing trace with hash 113266926, now seen corresponding path program 37 times [2022-11-23 14:23:47,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:47,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224631932] [2022-11-23 14:23:47,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:47,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:48,538 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:48,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:48,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224631932] [2022-11-23 14:23:48,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224631932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:48,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:48,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:48,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693600197] [2022-11-23 14:23:48,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:48,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:48,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:48,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:48,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:48,539 INFO L87 Difference]: Start difference. First operand 793 states and 2279 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:49,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:49,147 INFO L93 Difference]: Finished difference Result 835 states and 2369 transitions. [2022-11-23 14:23:49,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:49,147 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:49,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:49,149 INFO L225 Difference]: With dead ends: 835 [2022-11-23 14:23:49,149 INFO L226 Difference]: Without dead ends: 826 [2022-11-23 14:23:49,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:49,149 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:49,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:49,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-11-23 14:23:49,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 796. [2022-11-23 14:23:49,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 795 states have (on average 2.872955974842767) internal successors, (2284), 795 states have internal predecessors, (2284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:49,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 2284 transitions. [2022-11-23 14:23:49,163 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 2284 transitions. Word has length 36 [2022-11-23 14:23:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:49,163 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 2284 transitions. [2022-11-23 14:23:49,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:49,163 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 2284 transitions. [2022-11-23 14:23:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:49,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:49,165 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] [2022-11-23 14:23:49,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-11-23 14:23:49,165 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:49,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:49,165 INFO L85 PathProgramCache]: Analyzing trace with hash 987007606, now seen corresponding path program 38 times [2022-11-23 14:23:49,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:49,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779199760] [2022-11-23 14:23:49,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:49,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:50,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:50,249 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:50,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779199760] [2022-11-23 14:23:50,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779199760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:50,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:50,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:50,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357228867] [2022-11-23 14:23:50,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:50,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:50,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:50,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:50,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:50,250 INFO L87 Difference]: Start difference. First operand 796 states and 2284 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:50,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:50,720 INFO L93 Difference]: Finished difference Result 848 states and 2383 transitions. [2022-11-23 14:23:50,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:50,721 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:50,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:50,722 INFO L225 Difference]: With dead ends: 848 [2022-11-23 14:23:50,722 INFO L226 Difference]: Without dead ends: 831 [2022-11-23 14:23:50,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:50,722 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:50,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 0 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 524 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:50,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 831 states. [2022-11-23 14:23:50,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 831 to 793. [2022-11-23 14:23:50,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 792 states have (on average 2.8737373737373737) internal successors, (2276), 792 states have internal predecessors, (2276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:50,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 2276 transitions. [2022-11-23 14:23:50,732 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 2276 transitions. Word has length 36 [2022-11-23 14:23:50,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:50,733 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 2276 transitions. [2022-11-23 14:23:50,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:50,733 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 2276 transitions. [2022-11-23 14:23:50,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:50,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:50,734 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] [2022-11-23 14:23:50,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-11-23 14:23:50,734 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:50,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1066510738, now seen corresponding path program 39 times [2022-11-23 14:23:50,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:50,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916671976] [2022-11-23 14:23:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:50,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:50,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:51,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:51,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916671976] [2022-11-23 14:23:51,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916671976] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:51,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:51,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:51,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546635827] [2022-11-23 14:23:51,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:51,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:51,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:51,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:51,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:51,816 INFO L87 Difference]: Start difference. First operand 793 states and 2276 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:52,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:52,281 INFO L93 Difference]: Finished difference Result 841 states and 2380 transitions. [2022-11-23 14:23:52,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:52,283 INFO L225 Difference]: With dead ends: 841 [2022-11-23 14:23:52,283 INFO L226 Difference]: Without dead ends: 830 [2022-11-23 14:23:52,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:52,283 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:52,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:23:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-11-23 14:23:52,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 798. [2022-11-23 14:23:52,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 2.867001254705144) internal successors, (2285), 797 states have internal predecessors, (2285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:52,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 2285 transitions. [2022-11-23 14:23:52,295 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 2285 transitions. Word has length 36 [2022-11-23 14:23:52,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:52,295 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 2285 transitions. [2022-11-23 14:23:52,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:52,296 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 2285 transitions. [2022-11-23 14:23:52,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:52,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:52,297 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] [2022-11-23 14:23:52,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-11-23 14:23:52,297 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:52,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:52,298 INFO L85 PathProgramCache]: Analyzing trace with hash -155902006, now seen corresponding path program 40 times [2022-11-23 14:23:52,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:52,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021923889] [2022-11-23 14:23:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:52,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:52,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:53,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:53,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:53,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021923889] [2022-11-23 14:23:53,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021923889] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:53,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:53,337 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:23:53,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143458144] [2022-11-23 14:23:53,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:53,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:23:53,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:53,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:23:53,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:53,338 INFO L87 Difference]: Start difference. First operand 798 states and 2285 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:53,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:53,861 INFO L93 Difference]: Finished difference Result 852 states and 2388 transitions. [2022-11-23 14:23:53,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:23:53,862 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:53,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:53,863 INFO L225 Difference]: With dead ends: 852 [2022-11-23 14:23:53,863 INFO L226 Difference]: Without dead ends: 826 [2022-11-23 14:23:53,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:23:53,866 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 66 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:53,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 0 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:23:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-11-23 14:23:53,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 758. [2022-11-23 14:23:53,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 2.8612945838837516) internal successors, (2166), 757 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:53,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2166 transitions. [2022-11-23 14:23:53,880 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2166 transitions. Word has length 36 [2022-11-23 14:23:53,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:53,880 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 2166 transitions. [2022-11-23 14:23:53,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:53,880 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2166 transitions. [2022-11-23 14:23:53,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:53,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:53,882 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] [2022-11-23 14:23:53,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-11-23 14:23:53,882 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1056155120, now seen corresponding path program 41 times [2022-11-23 14:23:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:53,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559250913] [2022-11-23 14:23:53,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:53,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:53,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:55,130 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:55,130 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:55,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559250913] [2022-11-23 14:23:55,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559250913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:55,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:55,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:23:55,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362484194] [2022-11-23 14:23:55,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:55,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:23:55,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:55,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:23:55,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:23:55,131 INFO L87 Difference]: Start difference. First operand 758 states and 2166 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:55,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:55,833 INFO L93 Difference]: Finished difference Result 791 states and 2237 transitions. [2022-11-23 14:23:55,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:23:55,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:55,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:55,835 INFO L225 Difference]: With dead ends: 791 [2022-11-23 14:23:55,835 INFO L226 Difference]: Without dead ends: 782 [2022-11-23 14:23:55,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:55,835 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 38 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:55,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 0 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:55,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-11-23 14:23:55,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 778. [2022-11-23 14:23:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 777 states have (on average 2.854568854568855) internal successors, (2218), 777 states have internal predecessors, (2218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:55,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 2218 transitions. [2022-11-23 14:23:55,847 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 2218 transitions. Word has length 36 [2022-11-23 14:23:55,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:55,847 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 2218 transitions. [2022-11-23 14:23:55,847 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:55,848 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 2218 transitions. [2022-11-23 14:23:55,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:55,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:55,849 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] [2022-11-23 14:23:55,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-11-23 14:23:55,849 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:55,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:55,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1019287068, now seen corresponding path program 42 times [2022-11-23 14:23:55,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:55,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383937085] [2022-11-23 14:23:55,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:55,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:57,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:57,017 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:57,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383937085] [2022-11-23 14:23:57,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383937085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:57,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:57,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:23:57,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131162175] [2022-11-23 14:23:57,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:57,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:23:57,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:57,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:23:57,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:23:57,019 INFO L87 Difference]: Start difference. First operand 778 states and 2218 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:57,648 INFO L93 Difference]: Finished difference Result 793 states and 2239 transitions. [2022-11-23 14:23:57,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:23:57,648 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:57,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:57,649 INFO L225 Difference]: With dead ends: 793 [2022-11-23 14:23:57,650 INFO L226 Difference]: Without dead ends: 780 [2022-11-23 14:23:57,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:57,650 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:57,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:57,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-11-23 14:23:57,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 776. [2022-11-23 14:23:57,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 776 states, 775 states have (on average 2.8529032258064517) internal successors, (2211), 775 states have internal predecessors, (2211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:57,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 776 states to 776 states and 2211 transitions. [2022-11-23 14:23:57,660 INFO L78 Accepts]: Start accepts. Automaton has 776 states and 2211 transitions. Word has length 36 [2022-11-23 14:23:57,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:57,661 INFO L495 AbstractCegarLoop]: Abstraction has 776 states and 2211 transitions. [2022-11-23 14:23:57,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:57,661 INFO L276 IsEmpty]: Start isEmpty. Operand 776 states and 2211 transitions. [2022-11-23 14:23:57,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:57,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:57,662 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] [2022-11-23 14:23:57,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-11-23 14:23:57,662 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:57,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:57,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1904085346, now seen corresponding path program 43 times [2022-11-23 14:23:57,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:57,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090647651] [2022-11-23 14:23:57,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:57,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:23:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:23:59,194 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:23:59,194 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:23:59,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090647651] [2022-11-23 14:23:59,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090647651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:23:59,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:23:59,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:23:59,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327149579] [2022-11-23 14:23:59,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:23:59,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:23:59,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:23:59,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:23:59,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:23:59,195 INFO L87 Difference]: Start difference. First operand 776 states and 2211 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:59,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:23:59,869 INFO L93 Difference]: Finished difference Result 839 states and 2317 transitions. [2022-11-23 14:23:59,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:23:59,870 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:23:59,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:23:59,871 INFO L225 Difference]: With dead ends: 839 [2022-11-23 14:23:59,871 INFO L226 Difference]: Without dead ends: 822 [2022-11-23 14:23:59,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:23:59,871 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:23:59,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:23:59,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 822 states. [2022-11-23 14:23:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 822 to 758. [2022-11-23 14:23:59,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 2.858652575957728) internal successors, (2164), 757 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:59,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 2164 transitions. [2022-11-23 14:23:59,881 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 2164 transitions. Word has length 36 [2022-11-23 14:23:59,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:23:59,881 INFO L495 AbstractCegarLoop]: Abstraction has 758 states and 2164 transitions. [2022-11-23 14:23:59,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:23:59,882 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 2164 transitions. [2022-11-23 14:23:59,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:23:59,883 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:23:59,883 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] [2022-11-23 14:23:59,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-11-23 14:23:59,883 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:23:59,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:23:59,883 INFO L85 PathProgramCache]: Analyzing trace with hash 856917598, now seen corresponding path program 44 times [2022-11-23 14:23:59,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:23:59,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330056250] [2022-11-23 14:23:59,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:23:59,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:01,073 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:24:01,073 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:01,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330056250] [2022-11-23 14:24:01,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330056250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:01,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:01,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:24:01,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391294635] [2022-11-23 14:24:01,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:01,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:24:01,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:01,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:24:01,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:24:01,075 INFO L87 Difference]: Start difference. First operand 758 states and 2164 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:02,058 INFO L93 Difference]: Finished difference Result 795 states and 2217 transitions. [2022-11-23 14:24:02,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:24:02,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:24:02,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:02,060 INFO L225 Difference]: With dead ends: 795 [2022-11-23 14:24:02,060 INFO L226 Difference]: Without dead ends: 778 [2022-11-23 14:24:02,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:24:02,061 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:02,061 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:24:02,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2022-11-23 14:24:02,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 752. [2022-11-23 14:24:02,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 752 states, 751 states have (on average 2.858854860186418) internal successors, (2147), 751 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:02,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 752 states to 752 states and 2147 transitions. [2022-11-23 14:24:02,073 INFO L78 Accepts]: Start accepts. Automaton has 752 states and 2147 transitions. Word has length 36 [2022-11-23 14:24:02,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:02,074 INFO L495 AbstractCegarLoop]: Abstraction has 752 states and 2147 transitions. [2022-11-23 14:24:02,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:02,074 INFO L276 IsEmpty]: Start isEmpty. Operand 752 states and 2147 transitions. [2022-11-23 14:24:02,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:24:02,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:02,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:24:02,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-11-23 14:24:02,075 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:24:02,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1641000098, now seen corresponding path program 45 times [2022-11-23 14:24:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:02,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1577043025] [2022-11-23 14:24:02,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:03,197 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:24:03,197 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:03,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1577043025] [2022-11-23 14:24:03,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1577043025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:24:03,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:24:03,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:24:03,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478781795] [2022-11-23 14:24:03,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:24:03,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:24:03,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:24:03,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:24:03,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:24:03,199 INFO L87 Difference]: Start difference. First operand 752 states and 2147 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:03,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:24:03,747 INFO L93 Difference]: Finished difference Result 769 states and 2173 transitions. [2022-11-23 14:24:03,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:24:03,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:24:03,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:24:03,749 INFO L225 Difference]: With dead ends: 769 [2022-11-23 14:24:03,749 INFO L226 Difference]: Without dead ends: 760 [2022-11-23 14:24:03,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:24:03,750 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:24:03,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:24:03,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-11-23 14:24:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 754. [2022-11-23 14:24:03,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 753 states have (on average 2.855245683930943) internal successors, (2150), 753 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 2150 transitions. [2022-11-23 14:24:03,763 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 2150 transitions. Word has length 36 [2022-11-23 14:24:03,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:24:03,764 INFO L495 AbstractCegarLoop]: Abstraction has 754 states and 2150 transitions. [2022-11-23 14:24:03,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:24:03,764 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 2150 transitions. [2022-11-23 14:24:03,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:24:03,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:24:03,766 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] [2022-11-23 14:24:03,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-11-23 14:24:03,767 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:24:03,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:24:03,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1677868150, now seen corresponding path program 46 times [2022-11-23 14:24:03,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:24:03,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715526042] [2022-11-23 14:24:03,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:24:03,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:24:03,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:05,153 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 14:24:05,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:24:05,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715526042] [2022-11-23 14:24:05,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715526042] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 14:24:05,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845909342] [2022-11-23 14:24:05,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-23 14:24:05,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:24:05,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:24:05,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:24:05,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:24:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:24:05,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-23 14:24:05,636 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:24:14,006 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:24:22,432 WARN L233 SmtUtils]: Spent 8.17s on a formula simplification that was a NOOP. DAG size: 75 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:24:30,780 WARN L233 SmtUtils]: Spent 8.20s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:24:37,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-23 14:24:37,212 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 268 treesize of output 1096 [2022-11-23 14:25:14,910 INFO L321 Elim1Store]: treesize reduction 3, result has 97.3 percent of original size [2022-11-23 14:25:14,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 130 [2022-11-23 14:25:15,120 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:25:15,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:25:15,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845909342] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:25:15,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 14:25:15,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 13 [2022-11-23 14:25:15,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628091549] [2022-11-23 14:25:15,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:25:15,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:25:15,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:25:15,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:25:15,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:25:15,123 INFO L87 Difference]: Start difference. First operand 754 states and 2150 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:25:24,196 WARN L233 SmtUtils]: Spent 8.14s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:26:57,264 WARN L233 SmtUtils]: Spent 1.55m on a formula simplification. DAG size of input: 95 DAG size of output: 95 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:27:13,660 WARN L233 SmtUtils]: Spent 16.28s on a formula simplification. DAG size of input: 76 DAG size of output: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-23 14:27:13,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:13,860 INFO L93 Difference]: Finished difference Result 771 states and 2175 transitions. [2022-11-23 14:27:13,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:27:13,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:13,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:13,862 INFO L225 Difference]: With dead ends: 771 [2022-11-23 14:27:13,862 INFO L226 Difference]: Without dead ends: 726 [2022-11-23 14:27:13,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 147.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-11-23 14:27:13,862 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:13,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 0 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:27:13,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-11-23 14:27:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 710. [2022-11-23 14:27:13,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.854724964739069) internal successors, (2024), 709 states have internal predecessors, (2024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:13,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2024 transitions. [2022-11-23 14:27:13,872 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2024 transitions. Word has length 36 [2022-11-23 14:27:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:13,872 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 2024 transitions. [2022-11-23 14:27:13,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2024 transitions. [2022-11-23 14:27:13,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:13,874 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:13,874 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] [2022-11-23 14:27:13,880 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-23 14:27:14,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d7faeb1f-d331-45a1-b98b-f7e5132ecdf7/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable113 [2022-11-23 14:27:14,078 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:14,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:14,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1660542414, now seen corresponding path program 1 times [2022-11-23 14:27:14,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:14,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820020182] [2022-11-23 14:27:14,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:14,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:14,277 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:14,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:14,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820020182] [2022-11-23 14:27:14,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820020182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:14,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:14,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:27:14,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261946155] [2022-11-23 14:27:14,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:14,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:14,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:14,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:14,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:27:14,278 INFO L87 Difference]: Start difference. First operand 710 states and 2024 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:14,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:14,466 INFO L93 Difference]: Finished difference Result 1056 states and 2983 transitions. [2022-11-23 14:27:14,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:14,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:14,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:14,469 INFO L225 Difference]: With dead ends: 1056 [2022-11-23 14:27:14,469 INFO L226 Difference]: Without dead ends: 1056 [2022-11-23 14:27:14,469 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 [2022-11-23 14:27:14,469 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 32 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:14,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 0 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:27:14,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1056 states. [2022-11-23 14:27:14,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1056 to 770. [2022-11-23 14:27:14,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 770 states, 769 states have (on average 2.873862158647594) internal successors, (2210), 769 states have internal predecessors, (2210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:14,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 770 states to 770 states and 2210 transitions. [2022-11-23 14:27:14,481 INFO L78 Accepts]: Start accepts. Automaton has 770 states and 2210 transitions. Word has length 36 [2022-11-23 14:27:14,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:14,482 INFO L495 AbstractCegarLoop]: Abstraction has 770 states and 2210 transitions. [2022-11-23 14:27:14,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:14,482 INFO L276 IsEmpty]: Start isEmpty. Operand 770 states and 2210 transitions. [2022-11-23 14:27:14,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:14,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:14,483 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] [2022-11-23 14:27:14,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-11-23 14:27:14,483 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:14,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:14,484 INFO L85 PathProgramCache]: Analyzing trace with hash -122540256, now seen corresponding path program 2 times [2022-11-23 14:27:14,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:14,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141873984] [2022-11-23 14:27:14,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:14,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:14,795 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:14,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141873984] [2022-11-23 14:27:14,795 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141873984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:14,795 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:14,795 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:27:14,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513742569] [2022-11-23 14:27:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:14,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:27:14,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:14,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:27:14,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:14,797 INFO L87 Difference]: Start difference. First operand 770 states and 2210 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:15,120 INFO L93 Difference]: Finished difference Result 818 states and 2284 transitions. [2022-11-23 14:27:15,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:27:15,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:15,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:15,123 INFO L225 Difference]: With dead ends: 818 [2022-11-23 14:27:15,123 INFO L226 Difference]: Without dead ends: 818 [2022-11-23 14:27:15,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:27:15,123 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:15,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:27:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2022-11-23 14:27:15,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 710. [2022-11-23 14:27:15,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.8208744710860367) internal successors, (2000), 709 states have internal predecessors, (2000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2000 transitions. [2022-11-23 14:27:15,139 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2000 transitions. Word has length 36 [2022-11-23 14:27:15,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:15,139 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 2000 transitions. [2022-11-23 14:27:15,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,140 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2000 transitions. [2022-11-23 14:27:15,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:15,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:15,141 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] [2022-11-23 14:27:15,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-11-23 14:27:15,142 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash 867122162, now seen corresponding path program 3 times [2022-11-23 14:27:15,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:15,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693697746] [2022-11-23 14:27:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:15,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:15,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:15,298 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:15,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693697746] [2022-11-23 14:27:15,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693697746] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:15,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:15,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:27:15,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173470546] [2022-11-23 14:27:15,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:15,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:15,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:15,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:15,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:27:15,300 INFO L87 Difference]: Start difference. First operand 710 states and 2000 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:15,445 INFO L93 Difference]: Finished difference Result 968 states and 2709 transitions. [2022-11-23 14:27:15,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:27:15,446 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:15,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:15,448 INFO L225 Difference]: With dead ends: 968 [2022-11-23 14:27:15,448 INFO L226 Difference]: Without dead ends: 946 [2022-11-23 14:27:15,448 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 [2022-11-23 14:27:15,448 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:15,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:27:15,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-11-23 14:27:15,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 730. [2022-11-23 14:27:15,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 2.8230452674897117) internal successors, (2058), 729 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 2058 transitions. [2022-11-23 14:27:15,461 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 2058 transitions. Word has length 36 [2022-11-23 14:27:15,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:15,461 INFO L495 AbstractCegarLoop]: Abstraction has 730 states and 2058 transitions. [2022-11-23 14:27:15,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,462 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 2058 transitions. [2022-11-23 14:27:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:15,463 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:15,463 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] [2022-11-23 14:27:15,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-11-23 14:27:15,464 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:15,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:15,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1860647968, now seen corresponding path program 4 times [2022-11-23 14:27:15,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:15,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463946978] [2022-11-23 14:27:15,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:15,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:15,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:15,717 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:15,717 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:15,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463946978] [2022-11-23 14:27:15,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463946978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:15,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:15,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:27:15,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419832550] [2022-11-23 14:27:15,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:15,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:27:15,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:15,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:27:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:15,718 INFO L87 Difference]: Start difference. First operand 730 states and 2058 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:15,958 INFO L93 Difference]: Finished difference Result 781 states and 2143 transitions. [2022-11-23 14:27:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:27:15,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:15,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:15,960 INFO L225 Difference]: With dead ends: 781 [2022-11-23 14:27:15,960 INFO L226 Difference]: Without dead ends: 762 [2022-11-23 14:27:15,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:27:15,960 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 139 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:15,960 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 0 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:27:15,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-23 14:27:15,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 710. [2022-11-23 14:27:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.8039492242595205) internal successors, (1988), 709 states have internal predecessors, (1988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1988 transitions. [2022-11-23 14:27:15,970 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1988 transitions. Word has length 36 [2022-11-23 14:27:15,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:15,970 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1988 transitions. [2022-11-23 14:27:15,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:15,970 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1988 transitions. [2022-11-23 14:27:15,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:15,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:15,971 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] [2022-11-23 14:27:15,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-11-23 14:27:15,972 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash -762537668, now seen corresponding path program 5 times [2022-11-23 14:27:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:15,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238723152] [2022-11-23 14:27:15,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:15,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:16,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:16,109 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:16,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:16,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238723152] [2022-11-23 14:27:16,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238723152] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:16,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:16,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:27:16,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064321500] [2022-11-23 14:27:16,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:16,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:27:16,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:16,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:27:16,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:27:16,111 INFO L87 Difference]: Start difference. First operand 710 states and 1988 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:16,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:16,300 INFO L93 Difference]: Finished difference Result 882 states and 2363 transitions. [2022-11-23 14:27:16,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-23 14:27:16,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:16,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:16,301 INFO L225 Difference]: With dead ends: 882 [2022-11-23 14:27:16,301 INFO L226 Difference]: Without dead ends: 784 [2022-11-23 14:27:16,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:27:16,302 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:16,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:27:16,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-11-23 14:27:16,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 722. [2022-11-23 14:27:16,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 721 states have (on average 2.7558945908460473) internal successors, (1987), 721 states have internal predecessors, (1987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:16,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1987 transitions. [2022-11-23 14:27:16,312 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1987 transitions. Word has length 36 [2022-11-23 14:27:16,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:16,312 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 1987 transitions. [2022-11-23 14:27:16,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1987 transitions. [2022-11-23 14:27:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:16,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:16,313 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] [2022-11-23 14:27:16,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-11-23 14:27:16,314 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:16,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:16,314 INFO L85 PathProgramCache]: Analyzing trace with hash -731060742, now seen corresponding path program 6 times [2022-11-23 14:27:16,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:16,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679646942] [2022-11-23 14:27:16,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:16,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:16,537 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:16,537 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:16,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679646942] [2022-11-23 14:27:16,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679646942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:16,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:16,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:27:16,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019635480] [2022-11-23 14:27:16,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:16,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-23 14:27:16,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:16,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-23 14:27:16,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-23 14:27:16,539 INFO L87 Difference]: Start difference. First operand 722 states and 1987 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:16,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:16,788 INFO L93 Difference]: Finished difference Result 846 states and 2262 transitions. [2022-11-23 14:27:16,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:27:16,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:16,790 INFO L225 Difference]: With dead ends: 846 [2022-11-23 14:27:16,790 INFO L226 Difference]: Without dead ends: 758 [2022-11-23 14:27:16,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:27:16,790 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:16,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:27:16,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2022-11-23 14:27:16,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 710. [2022-11-23 14:27:16,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 2.757404795486601) internal successors, (1955), 709 states have internal predecessors, (1955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1955 transitions. [2022-11-23 14:27:16,800 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1955 transitions. Word has length 36 [2022-11-23 14:27:16,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:16,800 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1955 transitions. [2022-11-23 14:27:16,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 6 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:16,800 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1955 transitions. [2022-11-23 14:27:16,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:16,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:16,801 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] [2022-11-23 14:27:16,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-11-23 14:27:16,801 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:16,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:16,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1904550277, now seen corresponding path program 55 times [2022-11-23 14:27:16,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:16,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406837408] [2022-11-23 14:27:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:16,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:18,175 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:18,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406837408] [2022-11-23 14:27:18,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406837408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:18,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:18,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:27:18,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089834867] [2022-11-23 14:27:18,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:18,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:27:18,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:27:18,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:27:18,176 INFO L87 Difference]: Start difference. First operand 710 states and 1955 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:20,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:20,282 INFO L93 Difference]: Finished difference Result 919 states and 2348 transitions. [2022-11-23 14:27:20,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:27:20,283 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:20,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:20,285 INFO L225 Difference]: With dead ends: 919 [2022-11-23 14:27:20,285 INFO L226 Difference]: Without dead ends: 912 [2022-11-23 14:27:20,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=127, Invalid=293, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:27:20,285 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 238 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:20,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 0 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:27:20,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-11-23 14:27:20,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 706. [2022-11-23 14:27:20,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 2.7560283687943263) internal successors, (1943), 705 states have internal predecessors, (1943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:20,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1943 transitions. [2022-11-23 14:27:20,296 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1943 transitions. Word has length 36 [2022-11-23 14:27:20,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:20,297 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1943 transitions. [2022-11-23 14:27:20,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:20,297 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1943 transitions. [2022-11-23 14:27:20,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:20,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:20,298 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] [2022-11-23 14:27:20,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-11-23 14:27:20,298 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash -2038106220, now seen corresponding path program 47 times [2022-11-23 14:27:20,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:20,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144374006] [2022-11-23 14:27:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:20,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:20,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:21,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:21,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144374006] [2022-11-23 14:27:21,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144374006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:21,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:21,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:27:21,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217435422] [2022-11-23 14:27:21,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:21,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:27:21,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:21,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:27:21,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:27:21,640 INFO L87 Difference]: Start difference. First operand 706 states and 1943 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:22,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:22,782 INFO L93 Difference]: Finished difference Result 842 states and 2220 transitions. [2022-11-23 14:27:22,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:27:22,782 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:22,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:22,784 INFO L225 Difference]: With dead ends: 842 [2022-11-23 14:27:22,784 INFO L226 Difference]: Without dead ends: 827 [2022-11-23 14:27:22,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:27:22,784 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 167 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:22,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 0 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-23 14:27:22,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-23 14:27:22,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 723. [2022-11-23 14:27:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 2.7340720221606647) internal successors, (1974), 722 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:22,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1974 transitions. [2022-11-23 14:27:22,797 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1974 transitions. Word has length 36 [2022-11-23 14:27:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:22,797 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1974 transitions. [2022-11-23 14:27:22,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1974 transitions. [2022-11-23 14:27:22,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:22,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:22,798 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] [2022-11-23 14:27:22,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-11-23 14:27:22,798 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:22,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:22,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1117958206, now seen corresponding path program 48 times [2022-11-23 14:27:22,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:22,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731982912] [2022-11-23 14:27:22,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:22,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:22,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:23,985 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:23,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [731982912] [2022-11-23 14:27:23,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [731982912] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:23,985 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:23,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:27:23,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065008400] [2022-11-23 14:27:23,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:23,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:27:23,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:23,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:27:23,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:27:23,986 INFO L87 Difference]: Start difference. First operand 723 states and 1974 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:24,933 INFO L93 Difference]: Finished difference Result 826 states and 2194 transitions. [2022-11-23 14:27:24,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:27:24,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:24,935 INFO L225 Difference]: With dead ends: 826 [2022-11-23 14:27:24,935 INFO L226 Difference]: Without dead ends: 809 [2022-11-23 14:27:24,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:27:24,935 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 67 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:24,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 0 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 818 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:27:24,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-11-23 14:27:24,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 717. [2022-11-23 14:27:24,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 716 states have (on average 2.7416201117318435) internal successors, (1963), 716 states have internal predecessors, (1963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:24,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1963 transitions. [2022-11-23 14:27:24,946 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1963 transitions. Word has length 36 [2022-11-23 14:27:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:24,946 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1963 transitions. [2022-11-23 14:27:24,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:24,947 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1963 transitions. [2022-11-23 14:27:24,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:24,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:24,948 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] [2022-11-23 14:27:24,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2022-11-23 14:27:24,948 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:24,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:24,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1327161900, now seen corresponding path program 49 times [2022-11-23 14:27:24,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:24,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303465090] [2022-11-23 14:27:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:24,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:25,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:26,492 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:26,492 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:26,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303465090] [2022-11-23 14:27:26,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303465090] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:26,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:26,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:27:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155349353] [2022-11-23 14:27:26,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:26,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:27:26,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:27:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:27:26,494 INFO L87 Difference]: Start difference. First operand 717 states and 1963 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:27,549 INFO L93 Difference]: Finished difference Result 903 states and 2336 transitions. [2022-11-23 14:27:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:27:27,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:27,551 INFO L225 Difference]: With dead ends: 903 [2022-11-23 14:27:27,552 INFO L226 Difference]: Without dead ends: 888 [2022-11-23 14:27:27,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:27:27,552 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 692 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 692 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:27,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 692 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:27:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2022-11-23 14:27:27,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 762. [2022-11-23 14:27:27,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 761 states have (on average 2.7411300919842314) internal successors, (2086), 761 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:27,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 2086 transitions. [2022-11-23 14:27:27,565 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 2086 transitions. Word has length 36 [2022-11-23 14:27:27,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:27,565 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 2086 transitions. [2022-11-23 14:27:27,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:27,565 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 2086 transitions. [2022-11-23 14:27:27,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:27,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:27,566 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] [2022-11-23 14:27:27,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2022-11-23 14:27:27,567 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:27,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:27,567 INFO L85 PathProgramCache]: Analyzing trace with hash -769357982, now seen corresponding path program 50 times [2022-11-23 14:27:27,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:27,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487990069] [2022-11-23 14:27:27,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:27,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:29,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:29,281 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:29,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487990069] [2022-11-23 14:27:29,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487990069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:29,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:29,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:27:29,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027080820] [2022-11-23 14:27:29,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:29,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:27:29,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:27:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:27:29,283 INFO L87 Difference]: Start difference. First operand 762 states and 2086 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:30,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:30,395 INFO L93 Difference]: Finished difference Result 844 states and 2232 transitions. [2022-11-23 14:27:30,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:27:30,395 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:30,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:30,397 INFO L225 Difference]: With dead ends: 844 [2022-11-23 14:27:30,397 INFO L226 Difference]: Without dead ends: 833 [2022-11-23 14:27:30,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:27:30,397 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:30,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 0 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:27:30,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-11-23 14:27:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 767. [2022-11-23 14:27:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 766 states have (on average 2.734986945169713) internal successors, (2095), 766 states have internal predecessors, (2095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:30,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 2095 transitions. [2022-11-23 14:27:30,408 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 2095 transitions. Word has length 36 [2022-11-23 14:27:30,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:30,408 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 2095 transitions. [2022-11-23 14:27:30,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:30,409 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 2095 transitions. [2022-11-23 14:27:30,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:30,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:30,410 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] [2022-11-23 14:27:30,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2022-11-23 14:27:30,410 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:30,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:30,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1157236802, now seen corresponding path program 51 times [2022-11-23 14:27:30,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:30,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417762068] [2022-11-23 14:27:30,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:30,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:31,751 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:31,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:31,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417762068] [2022-11-23 14:27:31,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417762068] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:31,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:31,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:27:31,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844549452] [2022-11-23 14:27:31,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:31,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:27:31,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:31,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:27:31,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:27:31,753 INFO L87 Difference]: Start difference. First operand 767 states and 2095 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:32,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:32,538 INFO L93 Difference]: Finished difference Result 855 states and 2240 transitions. [2022-11-23 14:27:32,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:27:32,539 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:32,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:32,540 INFO L225 Difference]: With dead ends: 855 [2022-11-23 14:27:32,540 INFO L226 Difference]: Without dead ends: 830 [2022-11-23 14:27:32,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:27:32,541 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:32,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 0 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:27:32,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-11-23 14:27:32,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 706. [2022-11-23 14:27:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 705 states have (on average 2.750354609929078) internal successors, (1939), 705 states have internal predecessors, (1939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:32,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 1939 transitions. [2022-11-23 14:27:32,552 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 1939 transitions. Word has length 36 [2022-11-23 14:27:32,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:32,553 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 1939 transitions. [2022-11-23 14:27:32,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:32,553 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 1939 transitions. [2022-11-23 14:27:32,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:32,554 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:32,554 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] [2022-11-23 14:27:32,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2022-11-23 14:27:32,554 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:32,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:32,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2052454930, now seen corresponding path program 7 times [2022-11-23 14:27:32,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:32,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089781694] [2022-11-23 14:27:32,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:32,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:32,785 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:32,786 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:32,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2089781694] [2022-11-23 14:27:32,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2089781694] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:32,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:32,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:27:32,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343280786] [2022-11-23 14:27:32,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:32,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:27:32,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:32,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:27:32,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:32,788 INFO L87 Difference]: Start difference. First operand 706 states and 1939 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:33,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:33,036 INFO L93 Difference]: Finished difference Result 812 states and 2137 transitions. [2022-11-23 14:27:33,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:27:33,036 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:33,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:33,037 INFO L225 Difference]: With dead ends: 812 [2022-11-23 14:27:33,037 INFO L226 Difference]: Without dead ends: 774 [2022-11-23 14:27:33,038 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:27:33,038 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 163 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:33,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 0 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:27:33,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-11-23 14:27:33,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 712. [2022-11-23 14:27:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 712 states, 711 states have (on average 2.7369901547116737) internal successors, (1946), 711 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1946 transitions. [2022-11-23 14:27:33,059 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1946 transitions. Word has length 36 [2022-11-23 14:27:33,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:33,059 INFO L495 AbstractCegarLoop]: Abstraction has 712 states and 1946 transitions. [2022-11-23 14:27:33,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1946 transitions. [2022-11-23 14:27:33,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:33,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:33,061 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] [2022-11-23 14:27:33,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2022-11-23 14:27:33,061 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:33,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:33,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1181256838, now seen corresponding path program 8 times [2022-11-23 14:27:33,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:33,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2132118724] [2022-11-23 14:27:33,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:33,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:33,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:33,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:33,344 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2132118724] [2022-11-23 14:27:33,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2132118724] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:33,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:33,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-23 14:27:33,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351749421] [2022-11-23 14:27:33,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:33,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 14:27:33,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:33,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 14:27:33,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:27:33,346 INFO L87 Difference]: Start difference. First operand 712 states and 1946 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:33,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:33,674 INFO L93 Difference]: Finished difference Result 825 states and 2167 transitions. [2022-11-23 14:27:33,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-23 14:27:33,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:33,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:33,676 INFO L225 Difference]: With dead ends: 825 [2022-11-23 14:27:33,676 INFO L226 Difference]: Without dead ends: 723 [2022-11-23 14:27:33,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:27:33,676 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 153 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:33,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 0 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 14:27:33,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-11-23 14:27:33,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 675. [2022-11-23 14:27:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 2.6958456973293767) internal successors, (1817), 674 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1817 transitions. [2022-11-23 14:27:33,687 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1817 transitions. Word has length 36 [2022-11-23 14:27:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:33,687 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1817 transitions. [2022-11-23 14:27:33,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 7 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1817 transitions. [2022-11-23 14:27:33,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:33,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:33,689 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] [2022-11-23 14:27:33,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2022-11-23 14:27:33,689 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:33,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:33,690 INFO L85 PathProgramCache]: Analyzing trace with hash -799181958, now seen corresponding path program 52 times [2022-11-23 14:27:33,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:33,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730564636] [2022-11-23 14:27:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:33,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:35,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:35,351 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:35,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730564636] [2022-11-23 14:27:35,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730564636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:35,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:35,351 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:27:35,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141958364] [2022-11-23 14:27:35,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:35,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:27:35,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:35,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:27:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:27:35,352 INFO L87 Difference]: Start difference. First operand 675 states and 1817 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:36,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:36,334 INFO L93 Difference]: Finished difference Result 739 states and 1955 transitions. [2022-11-23 14:27:36,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-23 14:27:36,335 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:36,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:36,336 INFO L225 Difference]: With dead ends: 739 [2022-11-23 14:27:36,336 INFO L226 Difference]: Without dead ends: 724 [2022-11-23 14:27:36,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-11-23 14:27:36,337 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 118 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:36,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 0 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:27:36,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2022-11-23 14:27:36,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 682. [2022-11-23 14:27:36,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 681 states have (on average 2.6901615271659325) internal successors, (1832), 681 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:36,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1832 transitions. [2022-11-23 14:27:36,347 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1832 transitions. Word has length 36 [2022-11-23 14:27:36,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:36,347 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 1832 transitions. [2022-11-23 14:27:36,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:36,348 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1832 transitions. [2022-11-23 14:27:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:36,348 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:36,349 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] [2022-11-23 14:27:36,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2022-11-23 14:27:36,349 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:36,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:36,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1195712680, now seen corresponding path program 53 times [2022-11-23 14:27:36,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:36,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49783192] [2022-11-23 14:27:36,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:36,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:37,774 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:37,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49783192] [2022-11-23 14:27:37,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49783192] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:37,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:37,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:27:37,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371226101] [2022-11-23 14:27:37,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:37,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:27:37,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:37,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:27:37,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:27:37,775 INFO L87 Difference]: Start difference. First operand 682 states and 1832 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:38,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:38,584 INFO L93 Difference]: Finished difference Result 725 states and 1934 transitions. [2022-11-23 14:27:38,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:27:38,584 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:38,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:38,585 INFO L225 Difference]: With dead ends: 725 [2022-11-23 14:27:38,585 INFO L226 Difference]: Without dead ends: 712 [2022-11-23 14:27:38,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-11-23 14:27:38,586 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:38,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:27:38,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-11-23 14:27:38,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 678. [2022-11-23 14:27:38,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 2.692762186115214) internal successors, (1823), 677 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:38,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1823 transitions. [2022-11-23 14:27:38,596 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1823 transitions. Word has length 36 [2022-11-23 14:27:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:38,596 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1823 transitions. [2022-11-23 14:27:38,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:38,596 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1823 transitions. [2022-11-23 14:27:38,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:38,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:38,598 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] [2022-11-23 14:27:38,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2022-11-23 14:27:38,598 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:38,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:38,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1281289638, now seen corresponding path program 54 times [2022-11-23 14:27:38,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:38,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153781707] [2022-11-23 14:27:38,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:38,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:39,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:39,894 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:39,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153781707] [2022-11-23 14:27:39,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153781707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:39,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:39,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:27:39,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714156317] [2022-11-23 14:27:39,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:39,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:27:39,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:39,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:27:39,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:27:39,895 INFO L87 Difference]: Start difference. First operand 678 states and 1823 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:40,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:40,656 INFO L93 Difference]: Finished difference Result 743 states and 1961 transitions. [2022-11-23 14:27:40,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:27:40,657 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:40,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:40,658 INFO L225 Difference]: With dead ends: 743 [2022-11-23 14:27:40,658 INFO L226 Difference]: Without dead ends: 728 [2022-11-23 14:27:40,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:27:40,659 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 164 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:40,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 0 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:27:40,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2022-11-23 14:27:40,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 684. [2022-11-23 14:27:40,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 683 states have (on average 2.6822840409956075) internal successors, (1832), 683 states have internal predecessors, (1832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:40,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 1832 transitions. [2022-11-23 14:27:40,668 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 1832 transitions. Word has length 36 [2022-11-23 14:27:40,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:40,669 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 1832 transitions. [2022-11-23 14:27:40,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:40,669 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 1832 transitions. [2022-11-23 14:27:40,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:40,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:40,670 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] [2022-11-23 14:27:40,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2022-11-23 14:27:40,670 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2093529644, now seen corresponding path program 55 times [2022-11-23 14:27:40,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:40,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247908791] [2022-11-23 14:27:40,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:40,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:41,853 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:41,853 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:41,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247908791] [2022-11-23 14:27:41,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247908791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:41,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:41,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:27:41,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440424099] [2022-11-23 14:27:41,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:41,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:27:41,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:41,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:27:41,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:27:41,855 INFO L87 Difference]: Start difference. First operand 684 states and 1832 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:42,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:42,590 INFO L93 Difference]: Finished difference Result 731 states and 1942 transitions. [2022-11-23 14:27:42,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-23 14:27:42,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:42,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:42,592 INFO L225 Difference]: With dead ends: 731 [2022-11-23 14:27:42,592 INFO L226 Difference]: Without dead ends: 714 [2022-11-23 14:27:42,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:27:42,593 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:42,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:27:42,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2022-11-23 14:27:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 678. [2022-11-23 14:27:42,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 677 states have (on average 2.6868537666174297) internal successors, (1819), 677 states have internal predecessors, (1819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:42,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 1819 transitions. [2022-11-23 14:27:42,606 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 1819 transitions. Word has length 36 [2022-11-23 14:27:42,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:42,607 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 1819 transitions. [2022-11-23 14:27:42,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:42,607 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 1819 transitions. [2022-11-23 14:27:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:42,608 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:42,608 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] [2022-11-23 14:27:42,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2022-11-23 14:27:42,608 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:42,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -344469958, now seen corresponding path program 56 times [2022-11-23 14:27:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:42,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062007220] [2022-11-23 14:27:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:42,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:43,839 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:43,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062007220] [2022-11-23 14:27:43,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062007220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:43,840 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:43,840 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:27:43,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635698225] [2022-11-23 14:27:43,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:43,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:27:43,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:43,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:27:43,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:27:43,842 INFO L87 Difference]: Start difference. First operand 678 states and 1819 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:44,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:44,390 INFO L93 Difference]: Finished difference Result 719 states and 1918 transitions. [2022-11-23 14:27:44,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:27:44,390 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:44,391 INFO L225 Difference]: With dead ends: 719 [2022-11-23 14:27:44,391 INFO L226 Difference]: Without dead ends: 710 [2022-11-23 14:27:44,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:44,392 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:44,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:27:44,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 710 states. [2022-11-23 14:27:44,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 710 to 680. [2022-11-23 14:27:44,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 2.6833578792341677) internal successors, (1822), 679 states have internal predecessors, (1822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 1822 transitions. [2022-11-23 14:27:44,402 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 1822 transitions. Word has length 36 [2022-11-23 14:27:44,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:44,402 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 1822 transitions. [2022-11-23 14:27:44,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:44,402 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 1822 transitions. [2022-11-23 14:27:44,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:44,403 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:44,403 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] [2022-11-23 14:27:44,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2022-11-23 14:27:44,403 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash -381338010, now seen corresponding path program 57 times [2022-11-23 14:27:44,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:44,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944346079] [2022-11-23 14:27:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:44,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:45,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:45,405 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:45,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944346079] [2022-11-23 14:27:45,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944346079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:45,406 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:45,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 14:27:45,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859909701] [2022-11-23 14:27:45,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:45,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-23 14:27:45,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:45,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-23 14:27:45,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-23 14:27:45,407 INFO L87 Difference]: Start difference. First operand 680 states and 1822 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:46,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:46,007 INFO L93 Difference]: Finished difference Result 721 states and 1920 transitions. [2022-11-23 14:27:46,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:27:46,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:46,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:46,009 INFO L225 Difference]: With dead ends: 721 [2022-11-23 14:27:46,009 INFO L226 Difference]: Without dead ends: 704 [2022-11-23 14:27:46,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:46,009 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:46,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:27:46,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-23 14:27:46,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 674. [2022-11-23 14:27:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 2.6924219910846956) internal successors, (1812), 673 states have internal predecessors, (1812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1812 transitions. [2022-11-23 14:27:46,018 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1812 transitions. Word has length 36 [2022-11-23 14:27:46,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:46,018 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1812 transitions. [2022-11-23 14:27:46,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:46,018 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1812 transitions. [2022-11-23 14:27:46,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:46,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:46,019 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] [2022-11-23 14:27:46,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2022-11-23 14:27:46,020 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:46,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:46,020 INFO L85 PathProgramCache]: Analyzing trace with hash -351852696, now seen corresponding path program 58 times [2022-11-23 14:27:46,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:46,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557221977] [2022-11-23 14:27:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:46,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:47,179 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:47,179 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:47,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557221977] [2022-11-23 14:27:47,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557221977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:47,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:47,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:27:47,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139153116] [2022-11-23 14:27:47,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:47,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:27:47,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:47,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:27:47,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:27:47,180 INFO L87 Difference]: Start difference. First operand 674 states and 1812 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:47,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:47,829 INFO L93 Difference]: Finished difference Result 697 states and 1854 transitions. [2022-11-23 14:27:47,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:27:47,830 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:47,831 INFO L225 Difference]: With dead ends: 697 [2022-11-23 14:27:47,831 INFO L226 Difference]: Without dead ends: 688 [2022-11-23 14:27:47,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:47,831 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 70 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:47,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 0 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:27:47,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2022-11-23 14:27:47,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 676. [2022-11-23 14:27:47,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 2.688888888888889) internal successors, (1815), 675 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:47,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 1815 transitions. [2022-11-23 14:27:47,840 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 1815 transitions. Word has length 36 [2022-11-23 14:27:47,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:47,840 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 1815 transitions. [2022-11-23 14:27:47,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:47,840 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 1815 transitions. [2022-11-23 14:27:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:47,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:47,841 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] [2022-11-23 14:27:47,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2022-11-23 14:27:47,841 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:47,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash -388720748, now seen corresponding path program 59 times [2022-11-23 14:27:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:47,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670270906] [2022-11-23 14:27:47,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:48,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:49,232 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:49,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670270906] [2022-11-23 14:27:49,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670270906] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:49,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:49,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:27:49,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815200180] [2022-11-23 14:27:49,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:49,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:27:49,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:49,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:27:49,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:27:49,234 INFO L87 Difference]: Start difference. First operand 676 states and 1815 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:50,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:50,073 INFO L93 Difference]: Finished difference Result 699 states and 1856 transitions. [2022-11-23 14:27:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:27:50,073 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:50,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:50,074 INFO L225 Difference]: With dead ends: 699 [2022-11-23 14:27:50,074 INFO L226 Difference]: Without dead ends: 686 [2022-11-23 14:27:50,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:50,075 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:50,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 0 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:27:50,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-11-23 14:27:50,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 674. [2022-11-23 14:27:50,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 673 states have (on average 2.6864784546805347) internal successors, (1808), 673 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:50,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1808 transitions. [2022-11-23 14:27:50,084 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 1808 transitions. Word has length 36 [2022-11-23 14:27:50,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:50,085 INFO L495 AbstractCegarLoop]: Abstraction has 674 states and 1808 transitions. [2022-11-23 14:27:50,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 1808 transitions. [2022-11-23 14:27:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:50,086 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:50,086 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] [2022-11-23 14:27:50,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2022-11-23 14:27:50,086 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:50,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:50,086 INFO L85 PathProgramCache]: Analyzing trace with hash 982874134, now seen corresponding path program 60 times [2022-11-23 14:27:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:50,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765317135] [2022-11-23 14:27:50,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:50,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:51,461 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:51,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:51,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765317135] [2022-11-23 14:27:51,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765317135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:51,461 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:51,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:27:51,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867210932] [2022-11-23 14:27:51,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:51,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:27:51,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:51,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:27:51,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:27:51,463 INFO L87 Difference]: Start difference. First operand 674 states and 1808 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:52,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:52,286 INFO L93 Difference]: Finished difference Result 765 states and 1965 transitions. [2022-11-23 14:27:52,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:27:52,286 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:52,288 INFO L225 Difference]: With dead ends: 765 [2022-11-23 14:27:52,288 INFO L226 Difference]: Without dead ends: 730 [2022-11-23 14:27:52,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:52,288 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:52,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:27:52,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2022-11-23 14:27:52,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 656. [2022-11-23 14:27:52,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 2.682442748091603) internal successors, (1757), 655 states have internal predecessors, (1757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:52,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1757 transitions. [2022-11-23 14:27:52,299 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1757 transitions. Word has length 36 [2022-11-23 14:27:52,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:52,299 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 1757 transitions. [2022-11-23 14:27:52,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1757 transitions. [2022-11-23 14:27:52,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:52,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:52,301 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] [2022-11-23 14:27:52,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2022-11-23 14:27:52,301 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:52,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:52,301 INFO L85 PathProgramCache]: Analyzing trace with hash -519847596, now seen corresponding path program 61 times [2022-11-23 14:27:52,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:52,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751602761] [2022-11-23 14:27:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:52,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:53,640 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:53,640 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:53,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751602761] [2022-11-23 14:27:53,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751602761] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:53,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:53,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:27:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672649681] [2022-11-23 14:27:53,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:53,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:27:53,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:53,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:27:53,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:27:53,642 INFO L87 Difference]: Start difference. First operand 656 states and 1757 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:54,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:54,251 INFO L93 Difference]: Finished difference Result 665 states and 1766 transitions. [2022-11-23 14:27:54,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:27:54,252 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:54,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:54,253 INFO L225 Difference]: With dead ends: 665 [2022-11-23 14:27:54,253 INFO L226 Difference]: Without dead ends: 656 [2022-11-23 14:27:54,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:54,254 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 64 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:54,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 0 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:27:54,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-11-23 14:27:54,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 656. [2022-11-23 14:27:54,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 2.6793893129770994) internal successors, (1755), 655 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:54,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1755 transitions. [2022-11-23 14:27:54,262 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1755 transitions. Word has length 36 [2022-11-23 14:27:54,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:54,263 INFO L495 AbstractCegarLoop]: Abstraction has 656 states and 1755 transitions. [2022-11-23 14:27:54,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:54,263 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1755 transitions. [2022-11-23 14:27:54,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:54,264 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:54,264 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] [2022-11-23 14:27:54,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2022-11-23 14:27:54,264 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:54,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:54,264 INFO L85 PathProgramCache]: Analyzing trace with hash -556715648, now seen corresponding path program 62 times [2022-11-23 14:27:54,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:54,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394756104] [2022-11-23 14:27:54,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:54,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:55,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:55,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394756104] [2022-11-23 14:27:55,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394756104] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:55,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:55,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:27:55,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737582983] [2022-11-23 14:27:55,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:55,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:27:55,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:55,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:27:55,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:27:55,760 INFO L87 Difference]: Start difference. First operand 656 states and 1755 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:56,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:56,423 INFO L93 Difference]: Finished difference Result 667 states and 1768 transitions. [2022-11-23 14:27:56,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:27:56,423 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:56,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:56,424 INFO L225 Difference]: With dead ends: 667 [2022-11-23 14:27:56,424 INFO L226 Difference]: Without dead ends: 654 [2022-11-23 14:27:56,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:56,425 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:56,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:27:56,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-11-23 14:27:56,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2022-11-23 14:27:56,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 2.679938744257274) internal successors, (1750), 653 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:56,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1750 transitions. [2022-11-23 14:27:56,437 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1750 transitions. Word has length 36 [2022-11-23 14:27:56,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:56,437 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1750 transitions. [2022-11-23 14:27:56,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:56,437 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1750 transitions. [2022-11-23 14:27:56,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:56,438 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:56,438 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] [2022-11-23 14:27:56,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2022-11-23 14:27:56,439 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:56,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:56,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1939219320, now seen corresponding path program 63 times [2022-11-23 14:27:56,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:56,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373781721] [2022-11-23 14:27:56,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:56,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:56,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:57,736 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:57,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:57,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373781721] [2022-11-23 14:27:57,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373781721] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:57,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:57,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:27:57,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232203087] [2022-11-23 14:27:57,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:57,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:27:57,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:57,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:27:57,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:27:57,737 INFO L87 Difference]: Start difference. First operand 654 states and 1750 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:58,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:27:58,374 INFO L93 Difference]: Finished difference Result 666 states and 1766 transitions. [2022-11-23 14:27:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:27:58,375 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:27:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:27:58,376 INFO L225 Difference]: With dead ends: 666 [2022-11-23 14:27:58,376 INFO L226 Difference]: Without dead ends: 657 [2022-11-23 14:27:58,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:27:58,376 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 445 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:27:58,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 0 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 445 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:27:58,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-11-23 14:27:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 657. [2022-11-23 14:27:58,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 656 states have (on average 2.6753048780487805) internal successors, (1755), 656 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 1755 transitions. [2022-11-23 14:27:58,386 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 1755 transitions. Word has length 36 [2022-11-23 14:27:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:27:58,387 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 1755 transitions. [2022-11-23 14:27:58,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:27:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 1755 transitions. [2022-11-23 14:27:58,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:27:58,388 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:27:58,388 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] [2022-11-23 14:27:58,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2022-11-23 14:27:58,388 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:27:58,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:27:58,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1482007296, now seen corresponding path program 64 times [2022-11-23 14:27:58,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:27:58,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931895002] [2022-11-23 14:27:58,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:27:58,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:27:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:27:59,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:27:59,648 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:27:59,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931895002] [2022-11-23 14:27:59,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931895002] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:27:59,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:27:59,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:27:59,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525661294] [2022-11-23 14:27:59,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:27:59,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:27:59,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:27:59,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:27:59,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:27:59,649 INFO L87 Difference]: Start difference. First operand 657 states and 1755 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:00,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:00,219 INFO L93 Difference]: Finished difference Result 671 states and 1773 transitions. [2022-11-23 14:28:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:28:00,219 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:00,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:00,220 INFO L225 Difference]: With dead ends: 671 [2022-11-23 14:28:00,221 INFO L226 Difference]: Without dead ends: 654 [2022-11-23 14:28:00,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:28:00,221 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:00,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:28:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-11-23 14:28:00,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 654. [2022-11-23 14:28:00,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 2.6753445635528332) internal successors, (1747), 653 states have internal predecessors, (1747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 1747 transitions. [2022-11-23 14:28:00,230 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 1747 transitions. Word has length 36 [2022-11-23 14:28:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:00,230 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 1747 transitions. [2022-11-23 14:28:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 1747 transitions. [2022-11-23 14:28:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:00,231 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:00,231 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] [2022-11-23 14:28:00,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2022-11-23 14:28:00,232 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash 759441656, now seen corresponding path program 65 times [2022-11-23 14:28:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:00,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930298189] [2022-11-23 14:28:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:00,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:01,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:01,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:01,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930298189] [2022-11-23 14:28:01,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930298189] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:01,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:01,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:28:01,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710487965] [2022-11-23 14:28:01,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:01,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:28:01,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:01,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:28:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:28:01,666 INFO L87 Difference]: Start difference. First operand 654 states and 1747 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:02,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:02,289 INFO L93 Difference]: Finished difference Result 670 states and 1773 transitions. [2022-11-23 14:28:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:28:02,289 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:02,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:02,291 INFO L225 Difference]: With dead ends: 670 [2022-11-23 14:28:02,291 INFO L226 Difference]: Without dead ends: 659 [2022-11-23 14:28:02,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:28:02,291 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:02,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:28:02,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-11-23 14:28:02,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2022-11-23 14:28:02,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 658 states have (on average 2.6686930091185412) internal successors, (1756), 658 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:02,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 1756 transitions. [2022-11-23 14:28:02,300 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 1756 transitions. Word has length 36 [2022-11-23 14:28:02,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:02,300 INFO L495 AbstractCegarLoop]: Abstraction has 659 states and 1756 transitions. [2022-11-23 14:28:02,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:02,300 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 1756 transitions. [2022-11-23 14:28:02,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:02,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:02,301 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] [2022-11-23 14:28:02,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2022-11-23 14:28:02,302 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:02,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:02,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1670050388, now seen corresponding path program 66 times [2022-11-23 14:28:02,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:02,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820924709] [2022-11-23 14:28:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:04,030 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:04,030 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:04,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820924709] [2022-11-23 14:28:04,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820924709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:04,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:04,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:28:04,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684337551] [2022-11-23 14:28:04,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:04,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 14:28:04,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:04,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 14:28:04,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-23 14:28:04,031 INFO L87 Difference]: Start difference. First operand 659 states and 1756 transitions. Second operand has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:04,603 INFO L93 Difference]: Finished difference Result 673 states and 1774 transitions. [2022-11-23 14:28:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:28:04,604 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:04,605 INFO L225 Difference]: With dead ends: 673 [2022-11-23 14:28:04,605 INFO L226 Difference]: Without dead ends: 634 [2022-11-23 14:28:04,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:28:04,606 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:04,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 0 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-23 14:28:04,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-11-23 14:28:04,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 613. [2022-11-23 14:28:04,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 2.684640522875817) internal successors, (1643), 612 states have internal predecessors, (1643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:04,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1643 transitions. [2022-11-23 14:28:04,615 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1643 transitions. Word has length 36 [2022-11-23 14:28:04,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:04,616 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1643 transitions. [2022-11-23 14:28:04,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:04,616 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1643 transitions. [2022-11-23 14:28:04,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:04,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:04,617 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] [2022-11-23 14:28:04,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2022-11-23 14:28:04,617 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:04,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:04,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1791500868, now seen corresponding path program 67 times [2022-11-23 14:28:04,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:04,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346060737] [2022-11-23 14:28:04,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:04,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:04,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:05,963 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:05,963 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:05,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346060737] [2022-11-23 14:28:05,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346060737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:05,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:05,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 14:28:05,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183856516] [2022-11-23 14:28:05,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:05,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-23 14:28:05,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:05,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-23 14:28:05,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-23 14:28:05,965 INFO L87 Difference]: Start difference. First operand 613 states and 1643 transitions. Second operand has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:06,936 INFO L93 Difference]: Finished difference Result 742 states and 1907 transitions. [2022-11-23 14:28:06,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 14:28:06,937 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:06,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:06,938 INFO L225 Difference]: With dead ends: 742 [2022-11-23 14:28:06,938 INFO L226 Difference]: Without dead ends: 727 [2022-11-23 14:28:06,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:28:06,939 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 226 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:06,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 0 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-23 14:28:06,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-11-23 14:28:06,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 624. [2022-11-23 14:28:06,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 624 states, 623 states have (on average 2.669341894060995) internal successors, (1663), 623 states have internal predecessors, (1663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:06,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 1663 transitions. [2022-11-23 14:28:06,949 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 1663 transitions. Word has length 36 [2022-11-23 14:28:06,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:06,949 INFO L495 AbstractCegarLoop]: Abstraction has 624 states and 1663 transitions. [2022-11-23 14:28:06,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.0) internal successors, (36), 12 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 1663 transitions. [2022-11-23 14:28:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:06,950 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:06,950 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] [2022-11-23 14:28:06,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2022-11-23 14:28:06,950 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:06,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:06,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1583318414, now seen corresponding path program 68 times [2022-11-23 14:28:06,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:06,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468595020] [2022-11-23 14:28:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:08,251 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:08,251 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:08,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468595020] [2022-11-23 14:28:08,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468595020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:08,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:08,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:28:08,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452996994] [2022-11-23 14:28:08,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:08,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:28:08,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:08,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:28:08,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:28:08,252 INFO L87 Difference]: Start difference. First operand 624 states and 1663 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:09,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:09,129 INFO L93 Difference]: Finished difference Result 726 states and 1881 transitions. [2022-11-23 14:28:09,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 14:28:09,129 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:09,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:09,130 INFO L225 Difference]: With dead ends: 726 [2022-11-23 14:28:09,130 INFO L226 Difference]: Without dead ends: 709 [2022-11-23 14:28:09,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-11-23 14:28:09,131 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 150 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:09,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 0 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-23 14:28:09,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-11-23 14:28:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 618. [2022-11-23 14:28:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 617 states have (on average 2.6774716369529985) internal successors, (1652), 617 states have internal predecessors, (1652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 1652 transitions. [2022-11-23 14:28:09,140 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 1652 transitions. Word has length 36 [2022-11-23 14:28:09,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:09,140 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 1652 transitions. [2022-11-23 14:28:09,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:09,140 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 1652 transitions. [2022-11-23 14:28:09,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:09,141 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:09,141 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] [2022-11-23 14:28:09,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2022-11-23 14:28:09,141 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:09,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1792522108, now seen corresponding path program 69 times [2022-11-23 14:28:09,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:09,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313768723] [2022-11-23 14:28:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:09,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:09,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:10,696 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:10,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313768723] [2022-11-23 14:28:10,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313768723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:10,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:10,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:28:10,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476542287] [2022-11-23 14:28:10,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:10,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:28:10,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:10,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:28:10,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:28:10,697 INFO L87 Difference]: Start difference. First operand 618 states and 1652 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:11,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:11,615 INFO L93 Difference]: Finished difference Result 731 states and 1863 transitions. [2022-11-23 14:28:11,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:28:11,615 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:11,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:11,616 INFO L225 Difference]: With dead ends: 731 [2022-11-23 14:28:11,617 INFO L226 Difference]: Without dead ends: 704 [2022-11-23 14:28:11,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:28:11,617 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 184 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:11,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 0 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:28:11,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-11-23 14:28:11,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 631. [2022-11-23 14:28:11,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.6746031746031744) internal successors, (1685), 630 states have internal predecessors, (1685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:11,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1685 transitions. [2022-11-23 14:28:11,627 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1685 transitions. Word has length 36 [2022-11-23 14:28:11,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:11,627 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 1685 transitions. [2022-11-23 14:28:11,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:11,627 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1685 transitions. [2022-11-23 14:28:11,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:11,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:11,628 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] [2022-11-23 14:28:11,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2022-11-23 14:28:11,628 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:11,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:11,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1234718190, now seen corresponding path program 70 times [2022-11-23 14:28:11,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:11,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392399669] [2022-11-23 14:28:11,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:11,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:13,163 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:13,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:13,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392399669] [2022-11-23 14:28:13,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392399669] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:13,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:13,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:28:13,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630722600] [2022-11-23 14:28:13,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:13,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:28:13,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:13,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:28:13,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:28:13,164 INFO L87 Difference]: Start difference. First operand 631 states and 1685 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:13,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:13,922 INFO L93 Difference]: Finished difference Result 663 states and 1731 transitions. [2022-11-23 14:28:13,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:28:13,922 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:13,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:13,924 INFO L225 Difference]: With dead ends: 663 [2022-11-23 14:28:13,924 INFO L226 Difference]: Without dead ends: 652 [2022-11-23 14:28:13,924 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:28:13,924 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 187 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:13,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [187 Valid, 0 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:28:13,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-11-23 14:28:13,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 636. [2022-11-23 14:28:13,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 636 states, 635 states have (on average 2.6677165354330707) internal successors, (1694), 635 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:13,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 636 states to 636 states and 1694 transitions. [2022-11-23 14:28:13,934 INFO L78 Accepts]: Start accepts. Automaton has 636 states and 1694 transitions. Word has length 36 [2022-11-23 14:28:13,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:13,934 INFO L495 AbstractCegarLoop]: Abstraction has 636 states and 1694 transitions. [2022-11-23 14:28:13,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:13,934 INFO L276 IsEmpty]: Start isEmpty. Operand 636 states and 1694 transitions. [2022-11-23 14:28:13,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:13,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:13,935 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] [2022-11-23 14:28:13,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2022-11-23 14:28:13,936 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:13,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:13,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1622597010, now seen corresponding path program 71 times [2022-11-23 14:28:13,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:13,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771445595] [2022-11-23 14:28:13,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:13,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:15,399 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:15,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:15,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771445595] [2022-11-23 14:28:15,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771445595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:15,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:15,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-23 14:28:15,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911819656] [2022-11-23 14:28:15,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:15,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-23 14:28:15,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:15,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-23 14:28:15,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-11-23 14:28:15,400 INFO L87 Difference]: Start difference. First operand 636 states and 1694 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:16,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:16,183 INFO L93 Difference]: Finished difference Result 666 states and 1732 transitions. [2022-11-23 14:28:16,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:28:16,184 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:16,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:16,185 INFO L225 Difference]: With dead ends: 666 [2022-11-23 14:28:16,185 INFO L226 Difference]: Without dead ends: 619 [2022-11-23 14:28:16,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:28:16,186 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 157 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:16,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [157 Valid, 0 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-23 14:28:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2022-11-23 14:28:16,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 572. [2022-11-23 14:28:16,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 2.725043782837128) internal successors, (1556), 571 states have internal predecessors, (1556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:16,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 1556 transitions. [2022-11-23 14:28:16,198 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 1556 transitions. Word has length 36 [2022-11-23 14:28:16,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:16,198 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 1556 transitions. [2022-11-23 14:28:16,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:16,198 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 1556 transitions. [2022-11-23 14:28:16,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:16,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:16,200 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] [2022-11-23 14:28:16,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2022-11-23 14:28:16,200 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:16,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:16,201 INFO L85 PathProgramCache]: Analyzing trace with hash 488404887, now seen corresponding path program 56 times [2022-11-23 14:28:16,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:16,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414138450] [2022-11-23 14:28:16,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:16,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:17,996 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:17,997 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:17,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414138450] [2022-11-23 14:28:17,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414138450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:17,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:17,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:28:17,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210677225] [2022-11-23 14:28:17,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:17,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:28:17,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:17,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:28:17,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:28:17,998 INFO L87 Difference]: Start difference. First operand 572 states and 1556 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:20,644 INFO L93 Difference]: Finished difference Result 2448 states and 6431 transitions. [2022-11-23 14:28:20,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:28:20,645 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:20,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:20,648 INFO L225 Difference]: With dead ends: 2448 [2022-11-23 14:28:20,648 INFO L226 Difference]: Without dead ends: 2419 [2022-11-23 14:28:20,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:28:20,649 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 340 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1164 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:20,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 0 Invalid, 1179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1164 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:28:20,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2419 states. [2022-11-23 14:28:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2419 to 639. [2022-11-23 14:28:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 639 states, 638 states have (on average 2.80564263322884) internal successors, (1790), 638 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:20,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 639 states to 639 states and 1790 transitions. [2022-11-23 14:28:20,672 INFO L78 Accepts]: Start accepts. Automaton has 639 states and 1790 transitions. Word has length 36 [2022-11-23 14:28:20,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:20,672 INFO L495 AbstractCegarLoop]: Abstraction has 639 states and 1790 transitions. [2022-11-23 14:28:20,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states and 1790 transitions. [2022-11-23 14:28:20,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:20,673 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:20,673 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] [2022-11-23 14:28:20,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2022-11-23 14:28:20,673 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:20,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:20,674 INFO L85 PathProgramCache]: Analyzing trace with hash -743351867, now seen corresponding path program 57 times [2022-11-23 14:28:20,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:20,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45493025] [2022-11-23 14:28:20,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:20,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:23,443 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:23,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:23,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45493025] [2022-11-23 14:28:23,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45493025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:23,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:23,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-23 14:28:23,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106604385] [2022-11-23 14:28:23,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:23,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-23 14:28:23,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:23,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-23 14:28:23,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-11-23 14:28:23,444 INFO L87 Difference]: Start difference. First operand 639 states and 1790 transitions. Second operand has 21 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:32,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:32,462 INFO L93 Difference]: Finished difference Result 2602 states and 6737 transitions. [2022-11-23 14:28:32,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-23 14:28:32,463 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:32,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:32,467 INFO L225 Difference]: With dead ends: 2602 [2022-11-23 14:28:32,467 INFO L226 Difference]: Without dead ends: 2574 [2022-11-23 14:28:32,467 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=842, Invalid=2128, Unknown=0, NotChecked=0, Total=2970 [2022-11-23 14:28:32,468 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 560 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:32,468 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [560 Valid, 0 Invalid, 1976 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-23 14:28:32,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2574 states. [2022-11-23 14:28:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2574 to 631. [2022-11-23 14:28:32,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.812698412698413) internal successors, (1772), 630 states have internal predecessors, (1772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:32,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1772 transitions. [2022-11-23 14:28:32,490 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1772 transitions. Word has length 36 [2022-11-23 14:28:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:32,490 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 1772 transitions. [2022-11-23 14:28:32,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 1.8) internal successors, (36), 20 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1772 transitions. [2022-11-23 14:28:32,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:32,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:32,491 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] [2022-11-23 14:28:32,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2022-11-23 14:28:32,492 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:32,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:32,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1144539355, now seen corresponding path program 58 times [2022-11-23 14:28:32,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:32,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241762842] [2022-11-23 14:28:32,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:32,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:34,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:34,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:34,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241762842] [2022-11-23 14:28:34,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241762842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:34,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:34,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:28:34,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090637731] [2022-11-23 14:28:34,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:34,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:28:34,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:34,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:28:34,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:28:34,816 INFO L87 Difference]: Start difference. First operand 631 states and 1772 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:39,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:39,323 INFO L93 Difference]: Finished difference Result 2569 states and 6728 transitions. [2022-11-23 14:28:39,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 14:28:39,324 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:39,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:39,327 INFO L225 Difference]: With dead ends: 2569 [2022-11-23 14:28:39,327 INFO L226 Difference]: Without dead ends: 2540 [2022-11-23 14:28:39,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=432, Invalid=1128, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 14:28:39,331 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 551 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1458 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:39,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 0 Invalid, 1494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1458 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-23 14:28:39,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-11-23 14:28:39,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 641. [2022-11-23 14:28:39,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 641 states, 640 states have (on average 2.825) internal successors, (1808), 640 states have internal predecessors, (1808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:39,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 1808 transitions. [2022-11-23 14:28:39,359 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 1808 transitions. Word has length 36 [2022-11-23 14:28:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:39,359 INFO L495 AbstractCegarLoop]: Abstraction has 641 states and 1808 transitions. [2022-11-23 14:28:39,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:39,359 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 1808 transitions. [2022-11-23 14:28:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:39,360 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:39,360 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] [2022-11-23 14:28:39,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2022-11-23 14:28:39,361 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:39,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:39,361 INFO L85 PathProgramCache]: Analyzing trace with hash -768999213, now seen corresponding path program 59 times [2022-11-23 14:28:39,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:39,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499113202] [2022-11-23 14:28:39,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:39,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:40,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:40,814 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:40,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499113202] [2022-11-23 14:28:40,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499113202] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:40,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:40,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:28:40,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701557053] [2022-11-23 14:28:40,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:40,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:28:40,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:40,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:28:40,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:28:40,815 INFO L87 Difference]: Start difference. First operand 641 states and 1808 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:43,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:43,011 INFO L93 Difference]: Finished difference Result 2567 states and 6727 transitions. [2022-11-23 14:28:43,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:28:43,011 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:43,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:43,015 INFO L225 Difference]: With dead ends: 2567 [2022-11-23 14:28:43,015 INFO L226 Difference]: Without dead ends: 2553 [2022-11-23 14:28:43,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:28:43,015 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 321 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:43,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 0 Invalid, 1316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:28:43,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2553 states. [2022-11-23 14:28:43,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2553 to 653. [2022-11-23 14:28:43,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 2.8282208588957056) internal successors, (1844), 652 states have internal predecessors, (1844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1844 transitions. [2022-11-23 14:28:43,035 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1844 transitions. Word has length 36 [2022-11-23 14:28:43,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:43,036 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 1844 transitions. [2022-11-23 14:28:43,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:43,036 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1844 transitions. [2022-11-23 14:28:43,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:43,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:43,037 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] [2022-11-23 14:28:43,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2022-11-23 14:28:43,037 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:43,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:43,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1540898567, now seen corresponding path program 60 times [2022-11-23 14:28:43,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:43,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738161618] [2022-11-23 14:28:43,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:43,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:44,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:44,403 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:44,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738161618] [2022-11-23 14:28:44,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738161618] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:44,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:44,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:28:44,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578404771] [2022-11-23 14:28:44,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:44,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:28:44,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:44,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:28:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:28:44,404 INFO L87 Difference]: Start difference. First operand 653 states and 1844 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:46,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:46,297 INFO L93 Difference]: Finished difference Result 2661 states and 6942 transitions. [2022-11-23 14:28:46,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:28:46,298 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:46,302 INFO L225 Difference]: With dead ends: 2661 [2022-11-23 14:28:46,302 INFO L226 Difference]: Without dead ends: 2647 [2022-11-23 14:28:46,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:28:46,303 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 399 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:46,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 0 Invalid, 1085 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-23 14:28:46,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2647 states. [2022-11-23 14:28:46,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2647 to 671. [2022-11-23 14:28:46,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 670 states have (on average 2.837313432835821) internal successors, (1901), 670 states have internal predecessors, (1901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:46,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 1901 transitions. [2022-11-23 14:28:46,327 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 1901 transitions. Word has length 36 [2022-11-23 14:28:46,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:46,327 INFO L495 AbstractCegarLoop]: Abstraction has 671 states and 1901 transitions. [2022-11-23 14:28:46,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:46,327 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 1901 transitions. [2022-11-23 14:28:46,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:46,328 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:46,328 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] [2022-11-23 14:28:46,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2022-11-23 14:28:46,328 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:46,329 INFO L85 PathProgramCache]: Analyzing trace with hash -298752923, now seen corresponding path program 61 times [2022-11-23 14:28:46,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:46,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034676975] [2022-11-23 14:28:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:46,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:46,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:47,765 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:47,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034676975] [2022-11-23 14:28:47,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034676975] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:47,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:47,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:28:47,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611220611] [2022-11-23 14:28:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:47,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:28:47,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:47,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:28:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:28:47,766 INFO L87 Difference]: Start difference. First operand 671 states and 1901 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:49,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:49,779 INFO L93 Difference]: Finished difference Result 2681 states and 6984 transitions. [2022-11-23 14:28:49,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:28:49,780 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:49,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:49,784 INFO L225 Difference]: With dead ends: 2681 [2022-11-23 14:28:49,784 INFO L226 Difference]: Without dead ends: 2667 [2022-11-23 14:28:49,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:28:49,784 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 369 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1119 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:49,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 0 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1119 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:28:49,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2667 states. [2022-11-23 14:28:49,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2667 to 645. [2022-11-23 14:28:49,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 645 states, 644 states have (on average 2.8043478260869565) internal successors, (1806), 644 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:49,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 645 states to 645 states and 1806 transitions. [2022-11-23 14:28:49,806 INFO L78 Accepts]: Start accepts. Automaton has 645 states and 1806 transitions. Word has length 36 [2022-11-23 14:28:49,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:49,806 INFO L495 AbstractCegarLoop]: Abstraction has 645 states and 1806 transitions. [2022-11-23 14:28:49,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:49,806 INFO L276 IsEmpty]: Start isEmpty. Operand 645 states and 1806 transitions. [2022-11-23 14:28:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:49,807 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:49,807 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] [2022-11-23 14:28:49,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2022-11-23 14:28:49,807 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:49,808 INFO L85 PathProgramCache]: Analyzing trace with hash 617339095, now seen corresponding path program 62 times [2022-11-23 14:28:49,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:49,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006645419] [2022-11-23 14:28:49,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:49,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:51,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:51,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006645419] [2022-11-23 14:28:51,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006645419] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:51,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:51,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:28:51,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107300377] [2022-11-23 14:28:51,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:51,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:28:51,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:51,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:28:51,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:28:51,880 INFO L87 Difference]: Start difference. First operand 645 states and 1806 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:55,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:55,976 INFO L93 Difference]: Finished difference Result 2843 states and 7501 transitions. [2022-11-23 14:28:55,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 14:28:55,976 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:55,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:55,983 INFO L225 Difference]: With dead ends: 2843 [2022-11-23 14:28:55,983 INFO L226 Difference]: Without dead ends: 2814 [2022-11-23 14:28:55,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=431, Invalid=1129, Unknown=0, NotChecked=0, Total=1560 [2022-11-23 14:28:55,984 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 462 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1498 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:55,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 0 Invalid, 1531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1498 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-23 14:28:55,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2814 states. [2022-11-23 14:28:56,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2814 to 653. [2022-11-23 14:28:56,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 652 states have (on average 2.8220858895705523) internal successors, (1840), 652 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:56,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 1840 transitions. [2022-11-23 14:28:56,019 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 1840 transitions. Word has length 36 [2022-11-23 14:28:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:56,019 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 1840 transitions. [2022-11-23 14:28:56,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 1840 transitions. [2022-11-23 14:28:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:56,021 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:56,021 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] [2022-11-23 14:28:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2022-11-23 14:28:56,022 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:56,022 INFO L85 PathProgramCache]: Analyzing trace with hash 977016825, now seen corresponding path program 63 times [2022-11-23 14:28:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:56,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978066477] [2022-11-23 14:28:56,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:56,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:28:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:28:57,406 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:28:57,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978066477] [2022-11-23 14:28:57,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978066477] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:28:57,407 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:28:57,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:28:57,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66145754] [2022-11-23 14:28:57,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:28:57,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:28:57,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:28:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:28:57,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:28:57,408 INFO L87 Difference]: Start difference. First operand 653 states and 1840 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:59,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:28:59,351 INFO L93 Difference]: Finished difference Result 2650 states and 6966 transitions. [2022-11-23 14:28:59,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:28:59,352 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:28:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:28:59,356 INFO L225 Difference]: With dead ends: 2650 [2022-11-23 14:28:59,356 INFO L226 Difference]: Without dead ends: 2621 [2022-11-23 14:28:59,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=240, Invalid=630, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:28:59,357 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 319 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 319 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:28:59,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [319 Valid, 0 Invalid, 1132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:28:59,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2022-11-23 14:28:59,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 607. [2022-11-23 14:28:59,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 606 states have (on average 2.762376237623762) internal successors, (1674), 606 states have internal predecessors, (1674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:59,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 1674 transitions. [2022-11-23 14:28:59,379 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 1674 transitions. Word has length 36 [2022-11-23 14:28:59,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:28:59,379 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 1674 transitions. [2022-11-23 14:28:59,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:28:59,380 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 1674 transitions. [2022-11-23 14:28:59,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:28:59,381 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:28:59,381 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] [2022-11-23 14:28:59,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2022-11-23 14:28:59,381 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:28:59,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:28:59,381 INFO L85 PathProgramCache]: Analyzing trace with hash 287083991, now seen corresponding path program 64 times [2022-11-23 14:28:59,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:28:59,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058646778] [2022-11-23 14:28:59,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:28:59,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:28:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:00,851 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:29:00,851 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:00,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058646778] [2022-11-23 14:29:00,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058646778] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:00,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:00,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-23 14:29:00,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607978300] [2022-11-23 14:29:00,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:00,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 14:29:00,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:00,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 14:29:00,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-23 14:29:00,853 INFO L87 Difference]: Start difference. First operand 607 states and 1674 transitions. Second operand has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:03,289 INFO L93 Difference]: Finished difference Result 2338 states and 6134 transitions. [2022-11-23 14:29:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 14:29:03,290 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:29:03,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:03,297 INFO L225 Difference]: With dead ends: 2338 [2022-11-23 14:29:03,297 INFO L226 Difference]: Without dead ends: 2309 [2022-11-23 14:29:03,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=238, Invalid=632, Unknown=0, NotChecked=0, Total=870 [2022-11-23 14:29:03,298 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 340 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:03,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 0 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:29:03,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2022-11-23 14:29:03,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 631. [2022-11-23 14:29:03,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 631 states, 630 states have (on average 2.7523809523809524) internal successors, (1734), 630 states have internal predecessors, (1734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:03,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 1734 transitions. [2022-11-23 14:29:03,329 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 1734 transitions. Word has length 36 [2022-11-23 14:29:03,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:03,329 INFO L495 AbstractCegarLoop]: Abstraction has 631 states and 1734 transitions. [2022-11-23 14:29:03,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 14 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:03,329 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 1734 transitions. [2022-11-23 14:29:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:29:03,330 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:03,331 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] [2022-11-23 14:29:03,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2022-11-23 14:29:03,331 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:29:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:03,331 INFO L85 PathProgramCache]: Analyzing trace with hash 662624133, now seen corresponding path program 65 times [2022-11-23 14:29:03,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:03,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49030020] [2022-11-23 14:29:03,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:03,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:05,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:29:05,365 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:05,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49030020] [2022-11-23 14:29:05,365 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49030020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:05,365 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:05,365 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-23 14:29:05,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996210601] [2022-11-23 14:29:05,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:05,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-23 14:29:05,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:05,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-23 14:29:05,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-23 14:29:05,367 INFO L87 Difference]: Start difference. First operand 631 states and 1734 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:12,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:12,079 INFO L93 Difference]: Finished difference Result 2466 states and 6403 transitions. [2022-11-23 14:29:12,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-23 14:29:12,080 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:29:12,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:12,084 INFO L225 Difference]: With dead ends: 2466 [2022-11-23 14:29:12,085 INFO L226 Difference]: Without dead ends: 2452 [2022-11-23 14:29:12,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=746, Invalid=1906, Unknown=0, NotChecked=0, Total=2652 [2022-11-23 14:29:12,085 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 462 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:12,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 0 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-23 14:29:12,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2022-11-23 14:29:12,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 619. [2022-11-23 14:29:12,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 618 states have (on average 2.7572815533980584) internal successors, (1704), 618 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:12,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 1704 transitions. [2022-11-23 14:29:12,114 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 1704 transitions. Word has length 36 [2022-11-23 14:29:12,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:12,114 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 1704 transitions. [2022-11-23 14:29:12,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:12,114 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 1704 transitions. [2022-11-23 14:29:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:29:12,116 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:12,116 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] [2022-11-23 14:29:12,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2022-11-23 14:29:12,116 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:29:12,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:12,117 INFO L85 PathProgramCache]: Analyzing trace with hash 1348339519, now seen corresponding path program 66 times [2022-11-23 14:29:12,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:12,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98899061] [2022-11-23 14:29:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:12,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:13,624 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:29:13,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:13,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98899061] [2022-11-23 14:29:13,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98899061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:13,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:13,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 14:29:13,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076062005] [2022-11-23 14:29:13,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:13,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-23 14:29:13,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:13,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-23 14:29:13,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-23 14:29:13,626 INFO L87 Difference]: Start difference. First operand 619 states and 1704 transitions. Second operand has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:16,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:29:16,128 INFO L93 Difference]: Finished difference Result 2371 states and 6190 transitions. [2022-11-23 14:29:16,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-23 14:29:16,128 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-11-23 14:29:16,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:29:16,131 INFO L225 Difference]: With dead ends: 2371 [2022-11-23 14:29:16,132 INFO L226 Difference]: Without dead ends: 2357 [2022-11-23 14:29:16,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=276, Invalid=716, Unknown=0, NotChecked=0, Total=992 [2022-11-23 14:29:16,132 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 375 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-23 14:29:16,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 0 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-23 14:29:16,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2357 states. [2022-11-23 14:29:16,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2357 to 613. [2022-11-23 14:29:16,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 612 states have (on average 2.7598039215686274) internal successors, (1689), 612 states have internal predecessors, (1689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 1689 transitions. [2022-11-23 14:29:16,151 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 1689 transitions. Word has length 36 [2022-11-23 14:29:16,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:29:16,151 INFO L495 AbstractCegarLoop]: Abstraction has 613 states and 1689 transitions. [2022-11-23 14:29:16,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:29:16,151 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 1689 transitions. [2022-11-23 14:29:16,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-23 14:29:16,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:29:16,152 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] [2022-11-23 14:29:16,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2022-11-23 14:29:16,152 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-23 14:29:16,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:29:16,153 INFO L85 PathProgramCache]: Analyzing trace with hash 119836695, now seen corresponding path program 67 times [2022-11-23 14:29:16,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:29:16,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115188421] [2022-11-23 14:29:16,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:29:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:29:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:29:17,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:29:17,773 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:29:17,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115188421] [2022-11-23 14:29:17,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115188421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:29:17,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:29:17,773 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-11-23 14:29:17,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481713612] [2022-11-23 14:29:17,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:29:17,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-23 14:29:17,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:29:17,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-23 14:29:17,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2022-11-23 14:29:17,774 INFO L87 Difference]: Start difference. First operand 613 states and 1689 transitions. Second operand has 18 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)