./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire --witnessprinter.witness.filename witness --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 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:15:18,416 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:15:18,559 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:15:18,574 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:15:18,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:15:18,628 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:15:18,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:15:18,630 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:15:18,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:15:18,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:15:18,638 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:15:18,639 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:15:18,640 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:15:18,642 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:15:18,642 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:15:18,643 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:15:18,644 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:15:18,644 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:15:18,645 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:15:18,645 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:15:18,646 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:15:18,647 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:15:18,648 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:15:18,649 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:15:18,649 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:15:18,650 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:15:18,650 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:15:18,651 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:15:18,651 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:15:18,652 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:15:18,654 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:15:18,654 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:15:18,655 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:15:18,655 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:15:18,655 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:15:18,656 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:15:18,656 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:15:18,656 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:18,657 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:15:18,657 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:15:18,657 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:15:18,658 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:15:18,659 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:15:18,659 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:15:18,660 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:15:18,660 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:15:18,661 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:15:18,661 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0b03aab73b78beaf1bb7c49b9c847245bb2e0f74d5ca4021b62d8afb0b1e5702 [2023-11-23 21:15:19,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:15:19,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:15:19,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:15:19,059 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:15:19,059 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:15:19,061 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:15:22,342 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:15:22,755 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:15:22,757 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2023-11-23 21:15:22,802 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/data/58d391062/18d5cb57ee164c72b06c0422a810305f/FLAGbb1271631 [2023-11-23 21:15:22,818 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/data/58d391062/18d5cb57ee164c72b06c0422a810305f [2023-11-23 21:15:22,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:15:22,824 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:15:22,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:22,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:15:22,834 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:15:22,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:22" (1/1) ... [2023-11-23 21:15:22,836 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3234ff30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:22, skipping insertion in model container [2023-11-23 21:15:22,836 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:15:22" (1/1) ... [2023-11-23 21:15:22,949 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:15:23,507 WARN L240 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_36a390f5-16ba-47ed-8abb-b61143760945/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[186294,186307] [2023-11-23 21:15:23,592 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:23,614 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:15:23,699 WARN L240 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_36a390f5-16ba-47ed-8abb-b61143760945/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i[186294,186307] [2023-11-23 21:15:23,713 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:15:23,798 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:23,798 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 21:15:23,808 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:15:23,808 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23 WrapperNode [2023-11-23 21:15:23,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:15:23,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:23,811 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:15:23,811 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:15:23,849 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:23,893 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:23,947 INFO L138 Inliner]: procedures = 246, calls = 51, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 135 [2023-11-23 21:15:23,947 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:15:23,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:15:23,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:15:23,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:15:23,960 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:23,961 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:23,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:23,984 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:24,021 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:24,032 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:24,042 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:24,049 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:24,062 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:15:24,063 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:15:24,063 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:15:24,064 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:15:24,065 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (1/1) ... [2023-11-23 21:15:24,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:15:24,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:15:24,127 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:15:24,154 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_36a390f5-16ba-47ed-8abb-b61143760945/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:15:24,186 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2023-11-23 21:15:24,186 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2023-11-23 21:15:24,189 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 21:15:24,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 21:15:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 21:15:24,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 21:15:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 21:15:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 21:15:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:15:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 21:15:24,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:15:24,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:15:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:15:24,195 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 21:15:24,547 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:15:24,554 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:15:24,985 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:15:25,191 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:15:25,191 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 21:15:25,192 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:25 BoogieIcfgContainer [2023-11-23 21:15:25,192 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:15:25,195 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:15:25,195 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:15:25,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:15:25,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:15:22" (1/3) ... [2023-11-23 21:15:25,210 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6065be18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:25, skipping insertion in model container [2023-11-23 21:15:25,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:15:23" (2/3) ... [2023-11-23 21:15:25,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6065be18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:15:25, skipping insertion in model container [2023-11-23 21:15:25,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:15:25" (3/3) ... [2023-11-23 21:15:25,213 INFO L112 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2023-11-23 21:15:25,221 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 21:15:25,231 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:15:25,231 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-23 21:15:25,231 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 21:15:25,304 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-23 21:15:25,350 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 58 places, 60 transitions, 134 flow [2023-11-23 21:15:25,491 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 596 states, 586 states have (on average 2.6587030716723548) internal successors, (1558), 595 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:25,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:15:25,521 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=LoopHeads, 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;@2a99c5d2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:15:25,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-23 21:15:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand has 596 states, 586 states have (on average 2.6587030716723548) internal successors, (1558), 595 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:15:25,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:25,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:15:25,535 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:25,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash 13490038, now seen corresponding path program 1 times [2023-11-23 21:15:25,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:25,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954170574] [2023-11-23 21:15:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:25,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:25,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:26,407 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:26,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954170574] [2023-11-23 21:15:26,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954170574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:26,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:26,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:15:26,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28118722] [2023-11-23 21:15:26,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:26,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 21:15:26,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:26,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 21:15:26,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 21:15:26,466 INFO L87 Difference]: Start difference. First operand has 596 states, 586 states have (on average 2.6587030716723548) internal successors, (1558), 595 states have internal predecessors, (1558), 0 states have call successors, (0), 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 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:26,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:26,702 INFO L93 Difference]: Finished difference Result 520 states and 1285 transitions. [2023-11-23 21:15:26,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 21:15:26,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 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 4 [2023-11-23 21:15:26,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:26,724 INFO L225 Difference]: With dead ends: 520 [2023-11-23 21:15:26,724 INFO L226 Difference]: Without dead ends: 411 [2023-11-23 21:15:26,726 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 [2023-11-23 21:15:26,730 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:26,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:15:26,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2023-11-23 21:15:26,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 411. [2023-11-23 21:15:26,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 406 states have (on average 2.4532019704433496) internal successors, (996), 410 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:26,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 996 transitions. [2023-11-23 21:15:26,818 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 996 transitions. Word has length 4 [2023-11-23 21:15:26,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:26,819 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 996 transitions. [2023-11-23 21:15:26,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:26,820 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 996 transitions. [2023-11-23 21:15:26,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 21:15:26,820 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:26,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 21:15:26,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:15:26,821 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:26,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:26,822 INFO L85 PathProgramCache]: Analyzing trace with hash 79092242, now seen corresponding path program 1 times [2023-11-23 21:15:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600314964] [2023-11-23 21:15:26,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:26,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:26,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:27,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:27,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:27,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600314964] [2023-11-23 21:15:27,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600314964] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:27,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:27,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:15:27,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698438168] [2023-11-23 21:15:27,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:27,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:27,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:27,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:27,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:27,085 INFO L87 Difference]: Start difference. First operand 411 states and 996 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:27,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:27,294 INFO L93 Difference]: Finished difference Result 409 states and 994 transitions. [2023-11-23 21:15:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:15:27,295 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 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 6 [2023-11-23 21:15:27,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:27,301 INFO L225 Difference]: With dead ends: 409 [2023-11-23 21:15:27,302 INFO L226 Difference]: Without dead ends: 409 [2023-11-23 21:15:27,307 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 [2023-11-23 21:15:27,311 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:27,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:15:27,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-23 21:15:27,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 409. [2023-11-23 21:15:27,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 405 states have (on average 2.454320987654321) internal successors, (994), 408 states have internal predecessors, (994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:27,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 994 transitions. [2023-11-23 21:15:27,368 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 994 transitions. Word has length 6 [2023-11-23 21:15:27,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:27,369 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 994 transitions. [2023-11-23 21:15:27,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:27,369 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 994 transitions. [2023-11-23 21:15:27,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-23 21:15:27,371 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:27,372 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:15:27,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:15:27,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:27,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:27,375 INFO L85 PathProgramCache]: Analyzing trace with hash 998087258, now seen corresponding path program 1 times [2023-11-23 21:15:27,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:27,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906160450] [2023-11-23 21:15:27,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:27,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:27,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:27,803 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:27,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906160450] [2023-11-23 21:15:27,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906160450] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:27,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:27,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:15:27,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217418385] [2023-11-23 21:15:27,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:27,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:27,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:27,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:27,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:27,820 INFO L87 Difference]: Start difference. First operand 409 states and 994 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:28,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:28,029 INFO L93 Difference]: Finished difference Result 527 states and 1240 transitions. [2023-11-23 21:15:28,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:28,029 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 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 14 [2023-11-23 21:15:28,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:28,035 INFO L225 Difference]: With dead ends: 527 [2023-11-23 21:15:28,035 INFO L226 Difference]: Without dead ends: 440 [2023-11-23 21:15:28,035 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 [2023-11-23 21:15:28,037 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:28,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 24 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:15:28,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2023-11-23 21:15:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 440. [2023-11-23 21:15:28,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 437 states have (on average 2.416475972540046) internal successors, (1056), 439 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:28,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1056 transitions. [2023-11-23 21:15:28,059 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1056 transitions. Word has length 14 [2023-11-23 21:15:28,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:28,060 INFO L495 AbstractCegarLoop]: Abstraction has 440 states and 1056 transitions. [2023-11-23 21:15:28,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:28,060 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1056 transitions. [2023-11-23 21:15:28,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-23 21:15:28,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:28,065 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] [2023-11-23 21:15:28,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:15:28,065 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:28,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:28,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1686070892, now seen corresponding path program 1 times [2023-11-23 21:15:28,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:28,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121101623] [2023-11-23 21:15:28,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:28,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:28,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:28,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:28,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121101623] [2023-11-23 21:15:28,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121101623] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:28,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:28,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:15:28,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975992855] [2023-11-23 21:15:28,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:28,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:15:28,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:15:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:15:28,224 INFO L87 Difference]: Start difference. First operand 440 states and 1056 transitions. Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:28,364 INFO L93 Difference]: Finished difference Result 184 states and 408 transitions. [2023-11-23 21:15:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:15:28,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2023-11-23 21:15:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:28,367 INFO L225 Difference]: With dead ends: 184 [2023-11-23 21:15:28,368 INFO L226 Difference]: Without dead ends: 184 [2023-11-23 21:15:28,368 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 [2023-11-23 21:15:28,369 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 43 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:28,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 11 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:15:28,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2023-11-23 21:15:28,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2023-11-23 21:15:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 182 states have (on average 2.241758241758242) internal successors, (408), 183 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 408 transitions. [2023-11-23 21:15:28,384 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 408 transitions. Word has length 20 [2023-11-23 21:15:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:28,385 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 408 transitions. [2023-11-23 21:15:28,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 4 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 408 transitions. [2023-11-23 21:15:28,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:28,392 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:28,392 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] [2023-11-23 21:15:28,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:15:28,393 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:28,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:28,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1569851100, now seen corresponding path program 1 times [2023-11-23 21:15:28,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:28,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157573526] [2023-11-23 21:15:28,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:28,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:29,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:29,831 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:29,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157573526] [2023-11-23 21:15:29,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157573526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:29,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:29,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:15:29,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922780201] [2023-11-23 21:15:29,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:29,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:15:29,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:29,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:15:29,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:15:29,836 INFO L87 Difference]: Start difference. First operand 184 states and 408 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2023-11-23 21:15:30,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:30,456 INFO L93 Difference]: Finished difference Result 263 states and 546 transitions. [2023-11-23 21:15:30,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:15:30,458 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 [2023-11-23 21:15:30,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:30,461 INFO L225 Difference]: With dead ends: 263 [2023-11-23 21:15:30,461 INFO L226 Difference]: Without dead ends: 263 [2023-11-23 21:15:30,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:15:30,462 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 97 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:30,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 34 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:15:30,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2023-11-23 21:15:30,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 226. [2023-11-23 21:15:30,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 224 states have (on average 2.1830357142857144) internal successors, (489), 225 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:30,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 489 transitions. [2023-11-23 21:15:30,477 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 489 transitions. Word has length 29 [2023-11-23 21:15:30,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:30,478 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 489 transitions. [2023-11-23 21:15:30,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2023-11-23 21:15:30,478 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 489 transitions. [2023-11-23 21:15:30,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:30,480 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:30,480 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] [2023-11-23 21:15:30,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:15:30,481 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:30,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash 197252786, now seen corresponding path program 2 times [2023-11-23 21:15:30,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:30,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412224506] [2023-11-23 21:15:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:30,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:30,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:31,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:31,787 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:31,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412224506] [2023-11-23 21:15:31,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412224506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:31,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:31,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:15:31,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117439251] [2023-11-23 21:15:31,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:31,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:15:31,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:31,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:15:31,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:15:31,794 INFO L87 Difference]: Start difference. First operand 226 states and 489 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2023-11-23 21:15:32,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:32,307 INFO L93 Difference]: Finished difference Result 308 states and 619 transitions. [2023-11-23 21:15:32,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:15:32,308 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 [2023-11-23 21:15:32,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:32,311 INFO L225 Difference]: With dead ends: 308 [2023-11-23 21:15:32,311 INFO L226 Difference]: Without dead ends: 308 [2023-11-23 21:15:32,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:15:32,313 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 88 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:32,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 46 Invalid, 292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:15:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2023-11-23 21:15:32,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 234. [2023-11-23 21:15:32,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 232 states have (on average 2.1724137931034484) internal successors, (504), 233 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:32,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 504 transitions. [2023-11-23 21:15:32,327 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 504 transitions. Word has length 29 [2023-11-23 21:15:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:32,327 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 504 transitions. [2023-11-23 21:15:32,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2023-11-23 21:15:32,328 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 504 transitions. [2023-11-23 21:15:32,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:32,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:32,330 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] [2023-11-23 21:15:32,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:15:32,330 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:32,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:32,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1741552918, now seen corresponding path program 3 times [2023-11-23 21:15:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:32,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062703585] [2023-11-23 21:15:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:33,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:33,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062703585] [2023-11-23 21:15:33,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062703585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:33,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:33,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-23 21:15:33,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232334758] [2023-11-23 21:15:33,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:33,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-23 21:15:33,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-23 21:15:33,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:15:33,386 INFO L87 Difference]: Start difference. First operand 234 states and 504 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2023-11-23 21:15:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:33,858 INFO L93 Difference]: Finished difference Result 285 states and 585 transitions. [2023-11-23 21:15:33,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 21:15:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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 [2023-11-23 21:15:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:33,861 INFO L225 Difference]: With dead ends: 285 [2023-11-23 21:15:33,861 INFO L226 Difference]: Without dead ends: 285 [2023-11-23 21:15:33,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-23 21:15:33,862 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 68 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:33,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 32 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 21:15:33,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-23 21:15:33,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 226. [2023-11-23 21:15:33,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 224 states have (on average 2.1830357142857144) internal successors, (489), 225 states have internal predecessors, (489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:33,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 489 transitions. [2023-11-23 21:15:33,877 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 489 transitions. Word has length 29 [2023-11-23 21:15:33,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:33,878 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 489 transitions. [2023-11-23 21:15:33,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 9 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) [2023-11-23 21:15:33,878 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 489 transitions. [2023-11-23 21:15:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:33,881 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:33,881 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] [2023-11-23 21:15:33,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:15:33,881 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:33,882 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:33,882 INFO L85 PathProgramCache]: Analyzing trace with hash 399019108, now seen corresponding path program 4 times [2023-11-23 21:15:33,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:33,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414148516] [2023-11-23 21:15:33,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:33,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:35,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:35,206 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:35,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414148516] [2023-11-23 21:15:35,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414148516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:35,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:35,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:15:35,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132035380] [2023-11-23 21:15:35,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:35,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:15:35,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:35,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:15:35,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:15:35,209 INFO L87 Difference]: Start difference. First operand 226 states and 489 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:35,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:35,992 INFO L93 Difference]: Finished difference Result 435 states and 907 transitions. [2023-11-23 21:15:35,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:15:35,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 [2023-11-23 21:15:35,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:35,996 INFO L225 Difference]: With dead ends: 435 [2023-11-23 21:15:35,996 INFO L226 Difference]: Without dead ends: 435 [2023-11-23 21:15:35,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=283, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:15:35,998 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 102 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:35,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 46 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:15:36,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2023-11-23 21:15:36,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 283. [2023-11-23 21:15:36,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 281 states have (on average 2.263345195729537) internal successors, (636), 282 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:36,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 636 transitions. [2023-11-23 21:15:36,013 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 636 transitions. Word has length 29 [2023-11-23 21:15:36,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:36,014 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 636 transitions. [2023-11-23 21:15:36,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:36,014 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 636 transitions. [2023-11-23 21:15:36,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:36,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:36,016 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] [2023-11-23 21:15:36,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:15:36,016 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:36,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:36,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1054657040, now seen corresponding path program 5 times [2023-11-23 21:15:36,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:36,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875639074] [2023-11-23 21:15:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:36,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:37,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:37,417 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:37,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875639074] [2023-11-23 21:15:37,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875639074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:37,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:37,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:15:37,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493514535] [2023-11-23 21:15:37,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:37,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:15:37,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:37,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:15:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:15:37,423 INFO L87 Difference]: Start difference. First operand 283 states and 636 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:38,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:38,142 INFO L93 Difference]: Finished difference Result 443 states and 909 transitions. [2023-11-23 21:15:38,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:15:38,142 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 [2023-11-23 21:15:38,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:38,146 INFO L225 Difference]: With dead ends: 443 [2023-11-23 21:15:38,146 INFO L226 Difference]: Without dead ends: 443 [2023-11-23 21:15:38,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:15:38,147 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 109 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:38,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 49 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:15:38,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2023-11-23 21:15:38,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 286. [2023-11-23 21:15:38,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 284 states have (on average 2.26056338028169) internal successors, (642), 285 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:38,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 642 transitions. [2023-11-23 21:15:38,162 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 642 transitions. Word has length 29 [2023-11-23 21:15:38,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:38,162 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 642 transitions. [2023-11-23 21:15:38,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:38,163 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 642 transitions. [2023-11-23 21:15:38,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:38,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:38,164 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] [2023-11-23 21:15:38,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:15:38,165 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:38,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:38,165 INFO L85 PathProgramCache]: Analyzing trace with hash -931600524, now seen corresponding path program 6 times [2023-11-23 21:15:38,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:38,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322393504] [2023-11-23 21:15:38,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:38,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:38,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:39,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:39,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:39,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322393504] [2023-11-23 21:15:39,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322393504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:39,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:39,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:15:39,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888810025] [2023-11-23 21:15:39,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:39,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:15:39,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:39,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:15:39,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:15:39,519 INFO L87 Difference]: Start difference. First operand 286 states and 642 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:40,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:40,159 INFO L93 Difference]: Finished difference Result 409 states and 836 transitions. [2023-11-23 21:15:40,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 21:15:40,160 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 [2023-11-23 21:15:40,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:40,163 INFO L225 Difference]: With dead ends: 409 [2023-11-23 21:15:40,163 INFO L226 Difference]: Without dead ends: 409 [2023-11-23 21:15:40,163 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:15:40,164 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 96 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:40,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 43 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:15:40,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-23 21:15:40,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 289. [2023-11-23 21:15:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 287 states have (on average 2.2578397212543555) internal successors, (648), 288 states have internal predecessors, (648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 648 transitions. [2023-11-23 21:15:40,180 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 648 transitions. Word has length 29 [2023-11-23 21:15:40,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:40,180 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 648 transitions. [2023-11-23 21:15:40,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:40,180 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 648 transitions. [2023-11-23 21:15:40,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:40,181 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:40,182 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] [2023-11-23 21:15:40,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:15:40,182 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:40,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:40,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1997471396, now seen corresponding path program 7 times [2023-11-23 21:15:40,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:40,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012028716] [2023-11-23 21:15:40,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:40,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:41,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:41,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012028716] [2023-11-23 21:15:41,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012028716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:41,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:41,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:15:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703833510] [2023-11-23 21:15:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:41,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:15:41,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:41,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:15:41,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:15:41,406 INFO L87 Difference]: Start difference. First operand 289 states and 648 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:42,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:42,459 INFO L93 Difference]: Finished difference Result 508 states and 1024 transitions. [2023-11-23 21:15:42,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-23 21:15:42,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 [2023-11-23 21:15:42,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:42,464 INFO L225 Difference]: With dead ends: 508 [2023-11-23 21:15:42,464 INFO L226 Difference]: Without dead ends: 508 [2023-11-23 21:15:42,465 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2023-11-23 21:15:42,466 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 117 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:42,466 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 54 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:15:42,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-23 21:15:42,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 233. [2023-11-23 21:15:42,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 231 states have (on average 2.173160173160173) internal successors, (502), 232 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:42,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 502 transitions. [2023-11-23 21:15:42,480 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 502 transitions. Word has length 29 [2023-11-23 21:15:42,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:42,481 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 502 transitions. [2023-11-23 21:15:42,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 502 transitions. [2023-11-23 21:15:42,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:42,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:42,483 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] [2023-11-23 21:15:42,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:15:42,484 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:42,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:42,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1641857968, now seen corresponding path program 8 times [2023-11-23 21:15:42,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:42,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601935338] [2023-11-23 21:15:42,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:42,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:43,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:43,893 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:43,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601935338] [2023-11-23 21:15:43,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601935338] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:43,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:43,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-23 21:15:43,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142289481] [2023-11-23 21:15:43,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:43,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 21:15:43,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:43,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 21:15:43,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:15:43,895 INFO L87 Difference]: Start difference. First operand 233 states and 502 transitions. Second operand has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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) [2023-11-23 21:15:44,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:44,741 INFO L93 Difference]: Finished difference Result 453 states and 916 transitions. [2023-11-23 21:15:44,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-23 21:15:44,742 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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 [2023-11-23 21:15:44,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:44,745 INFO L225 Difference]: With dead ends: 453 [2023-11-23 21:15:44,745 INFO L226 Difference]: Without dead ends: 453 [2023-11-23 21:15:44,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2023-11-23 21:15:44,747 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 111 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:44,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 68 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 529 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:15:44,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2023-11-23 21:15:44,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 224. [2023-11-23 21:15:44,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 222 states have (on average 2.1396396396396398) internal successors, (475), 223 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 475 transitions. [2023-11-23 21:15:44,761 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 475 transitions. Word has length 29 [2023-11-23 21:15:44,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:44,761 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 475 transitions. [2023-11-23 21:15:44,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 12 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) [2023-11-23 21:15:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 475 transitions. [2023-11-23 21:15:44,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:44,763 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:44,763 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] [2023-11-23 21:15:44,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:15:44,763 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:44,764 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:44,764 INFO L85 PathProgramCache]: Analyzing trace with hash 245263404, now seen corresponding path program 9 times [2023-11-23 21:15:44,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:44,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194051918] [2023-11-23 21:15:44,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:44,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:44,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:45,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:45,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:45,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194051918] [2023-11-23 21:15:45,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194051918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:45,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:45,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:15:45,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676342674] [2023-11-23 21:15:45,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:45,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:15:45,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:45,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:15:45,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:15:45,927 INFO L87 Difference]: Start difference. First operand 224 states and 475 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:46,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:46,698 INFO L93 Difference]: Finished difference Result 383 states and 730 transitions. [2023-11-23 21:15:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:15:46,699 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 [2023-11-23 21:15:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:46,703 INFO L225 Difference]: With dead ends: 383 [2023-11-23 21:15:46,703 INFO L226 Difference]: Without dead ends: 383 [2023-11-23 21:15:46,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-11-23 21:15:46,704 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 106 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:46,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 43 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 21:15:46,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2023-11-23 21:15:46,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 225. [2023-11-23 21:15:46,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 223 states have (on average 2.1390134529147984) internal successors, (477), 224 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:46,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 477 transitions. [2023-11-23 21:15:46,718 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 477 transitions. Word has length 29 [2023-11-23 21:15:46,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:46,718 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 477 transitions. [2023-11-23 21:15:46,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:46,719 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 477 transitions. [2023-11-23 21:15:46,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:46,720 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:46,720 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] [2023-11-23 21:15:46,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 21:15:46,721 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:46,722 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:46,722 INFO L85 PathProgramCache]: Analyzing trace with hash 2085066320, now seen corresponding path program 10 times [2023-11-23 21:15:46,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:46,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021179736] [2023-11-23 21:15:46,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:46,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:47,897 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:47,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021179736] [2023-11-23 21:15:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021179736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:47,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:47,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:15:47,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008039648] [2023-11-23 21:15:47,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:47,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:15:47,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:15:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:15:47,900 INFO L87 Difference]: Start difference. First operand 225 states and 477 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:48,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:48,531 INFO L93 Difference]: Finished difference Result 320 states and 632 transitions. [2023-11-23 21:15:48,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 21:15:48,531 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 [2023-11-23 21:15:48,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:48,534 INFO L225 Difference]: With dead ends: 320 [2023-11-23 21:15:48,534 INFO L226 Difference]: Without dead ends: 320 [2023-11-23 21:15:48,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:15:48,535 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 87 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:48,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 44 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:15:48,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2023-11-23 21:15:48,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 222. [2023-11-23 21:15:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 220 states have (on average 2.140909090909091) internal successors, (471), 221 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:48,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 471 transitions. [2023-11-23 21:15:48,546 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 471 transitions. Word has length 29 [2023-11-23 21:15:48,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:48,546 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 471 transitions. [2023-11-23 21:15:48,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:48,546 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 471 transitions. [2023-11-23 21:15:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-23 21:15:48,547 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:48,547 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] [2023-11-23 21:15:48,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 21:15:48,549 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:48,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:48,549 INFO L85 PathProgramCache]: Analyzing trace with hash -589388728, now seen corresponding path program 11 times [2023-11-23 21:15:48,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:48,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278645837] [2023-11-23 21:15:48,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:48,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:48,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:49,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:49,592 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:49,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278645837] [2023-11-23 21:15:49,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278645837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:49,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:49,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 21:15:49,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864081033] [2023-11-23 21:15:49,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:49,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 21:15:49,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:49,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 21:15:49,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-23 21:15:49,595 INFO L87 Difference]: Start difference. First operand 222 states and 471 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:50,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:50,222 INFO L93 Difference]: Finished difference Result 295 states and 589 transitions. [2023-11-23 21:15:50,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:15:50,223 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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 [2023-11-23 21:15:50,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:50,225 INFO L225 Difference]: With dead ends: 295 [2023-11-23 21:15:50,225 INFO L226 Difference]: Without dead ends: 295 [2023-11-23 21:15:50,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-11-23 21:15:50,226 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 92 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:50,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 25 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 21:15:50,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2023-11-23 21:15:50,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 182. [2023-11-23 21:15:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.2430939226519335) internal successors, (406), 181 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 406 transitions. [2023-11-23 21:15:50,238 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 406 transitions. Word has length 29 [2023-11-23 21:15:50,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:50,238 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 406 transitions. [2023-11-23 21:15:50,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 11 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) [2023-11-23 21:15:50,239 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 406 transitions. [2023-11-23 21:15:50,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:15:50,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:50,240 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] [2023-11-23 21:15:50,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 21:15:50,240 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:50,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:50,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1093321591, now seen corresponding path program 1 times [2023-11-23 21:15:50,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:50,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487142756] [2023-11-23 21:15:50,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:50,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:52,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:52,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:52,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487142756] [2023-11-23 21:15:52,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487142756] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:52,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:52,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-11-23 21:15:52,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933279088] [2023-11-23 21:15:52,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:52,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-23 21:15:52,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:52,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-23 21:15:52,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-11-23 21:15:52,505 INFO L87 Difference]: Start difference. First operand 182 states and 406 transitions. Second operand has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 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) [2023-11-23 21:15:54,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:54,675 INFO L93 Difference]: Finished difference Result 272 states and 587 transitions. [2023-11-23 21:15:54,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 21:15:54,676 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 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 [2023-11-23 21:15:54,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:54,678 INFO L225 Difference]: With dead ends: 272 [2023-11-23 21:15:54,679 INFO L226 Difference]: Without dead ends: 248 [2023-11-23 21:15:54,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=205, Invalid=1127, Unknown=0, NotChecked=0, Total=1332 [2023-11-23 21:15:54,680 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 145 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:54,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 40 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:15:54,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2023-11-23 21:15:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 200. [2023-11-23 21:15:54,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.236180904522613) internal successors, (445), 199 states have internal predecessors, (445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:54,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 445 transitions. [2023-11-23 21:15:54,688 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 445 transitions. Word has length 31 [2023-11-23 21:15:54,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:54,689 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 445 transitions. [2023-11-23 21:15:54,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 16 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) [2023-11-23 21:15:54,689 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 445 transitions. [2023-11-23 21:15:54,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:15:54,690 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:54,690 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] [2023-11-23 21:15:54,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 21:15:54,691 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:54,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:54,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1485673707, now seen corresponding path program 2 times [2023-11-23 21:15:54,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:54,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377637007] [2023-11-23 21:15:54,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:54,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:15:56,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:15:56,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:15:56,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377637007] [2023-11-23 21:15:56,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377637007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:15:56,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:15:56,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 21:15:56,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213003559] [2023-11-23 21:15:56,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:15:56,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 21:15:56,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:15:56,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 21:15:56,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:15:56,652 INFO L87 Difference]: Start difference. First operand 200 states and 445 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 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) [2023-11-23 21:15:58,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:15:58,786 INFO L93 Difference]: Finished difference Result 264 states and 564 transitions. [2023-11-23 21:15:58,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 21:15:58,786 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 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 [2023-11-23 21:15:58,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:15:58,788 INFO L225 Difference]: With dead ends: 264 [2023-11-23 21:15:58,788 INFO L226 Difference]: Without dead ends: 242 [2023-11-23 21:15:58,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=216, Invalid=1190, Unknown=0, NotChecked=0, Total=1406 [2023-11-23 21:15:58,790 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 151 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 21:15:58,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 33 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1018 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 21:15:58,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2023-11-23 21:15:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 194. [2023-11-23 21:15:58,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.227979274611399) internal successors, (430), 193 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:15:58,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 430 transitions. [2023-11-23 21:15:58,798 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 430 transitions. Word has length 31 [2023-11-23 21:15:58,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:15:58,799 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 430 transitions. [2023-11-23 21:15:58,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 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) [2023-11-23 21:15:58,799 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 430 transitions. [2023-11-23 21:15:58,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-23 21:15:58,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:15:58,800 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] [2023-11-23 21:15:58,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-23 21:15:58,800 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2023-11-23 21:15:58,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:15:58,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1331236189, now seen corresponding path program 3 times [2023-11-23 21:15:58,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:15:58,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668020161] [2023-11-23 21:15:58,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:15:58,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:15:58,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:16:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:16:00,635 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:16:00,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668020161] [2023-11-23 21:16:00,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668020161] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:16:00,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:16:00,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-11-23 21:16:00,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848856560] [2023-11-23 21:16:00,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:16:00,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-23 21:16:00,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:16:00,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-23 21:16:00,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-11-23 21:16:00,638 INFO L87 Difference]: Start difference. First operand 194 states and 430 transitions. Second operand has 18 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 17 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)