./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b 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_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 53180871b18e463a1d4eb59b77dae8653e4e8db66fa1452414a5a766458fd1e7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:40:01,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:40:01,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:40:01,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:40:01,159 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:40:01,188 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:40:01,189 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:40:01,190 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:40:01,191 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:40:01,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:40:01,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:40:01,193 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:40:01,194 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:40:01,195 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:40:01,195 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:40:01,196 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:40:01,196 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:40:01,197 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:40:01,198 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:40:01,198 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:40:01,199 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:40:01,201 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:40:01,202 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:40:01,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:40:01,203 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:40:01,204 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:40:01,204 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:40:01,205 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:40:01,206 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:40:01,206 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:40:01,207 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:40:01,207 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:40:01,208 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:40:01,209 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:40:01,209 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:40:01,210 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:40:01,210 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:40:01,211 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:40:01,211 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:40:01,212 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 53180871b18e463a1d4eb59b77dae8653e4e8db66fa1452414a5a766458fd1e7 [2023-11-06 22:40:01,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:40:01,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:40:01,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:40:01,580 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:40:01,581 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:40:01,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c [2023-11-06 22:40:04,949 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:40:05,588 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:40:05,589 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c [2023-11-06 22:40:05,633 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/data/b88267f64/384791758b7c40528df8f6510f3c0899/FLAG06181fd49 [2023-11-06 22:40:05,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/data/b88267f64/384791758b7c40528df8f6510f3c0899 [2023-11-06 22:40:05,662 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:40:05,664 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:40:05,670 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:40:05,670 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:40:05,677 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:40:05,678 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:05" (1/1) ... [2023-11-06 22:40:05,679 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30cd1ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:05, skipping insertion in model container [2023-11-06 22:40:05,680 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:40:05" (1/1) ... [2023-11-06 22:40:05,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:40:06,365 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_0cfe4e63-e582-4a49-a616-fa860aab22ad/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c[11640,11653] [2023-11-06 22:40:06,439 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_0cfe4e63-e582-4a49-a616-fa860aab22ad/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c[19388,19401] [2023-11-06 22:40:07,452 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:40:07,467 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:40:07,527 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_0cfe4e63-e582-4a49-a616-fa860aab22ad/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c[11640,11653] [2023-11-06 22:40:07,551 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_0cfe4e63-e582-4a49-a616-fa860aab22ad/sv-benchmarks/c/combinations/pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c[19388,19401] [2023-11-06 22:40:08,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:40:08,210 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:40:08,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08 WrapperNode [2023-11-06 22:40:08,211 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:40:08,212 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:40:08,212 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:40:08,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:40:08,221 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:08,295 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:08,776 INFO L138 Inliner]: procedures = 36, calls = 22, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 5093 [2023-11-06 22:40:08,777 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:40:08,778 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:40:08,778 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:40:08,778 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:40:08,790 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:08,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:08,880 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:08,880 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:09,069 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:09,106 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:09,166 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:09,185 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:09,236 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:40:09,238 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:40:09,238 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:40:09,239 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:40:09,240 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (1/1) ... [2023-11-06 22:40:09,247 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:40:09,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:40:09,278 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:40:09,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:40:09,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:40:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:40:09,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:40:09,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:40:09,453 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:40:09,455 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:40:15,771 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:40:15,799 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:40:15,800 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:40:15,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:15 BoogieIcfgContainer [2023-11-06 22:40:15,807 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:40:15,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:40:15,810 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:40:15,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:40:15,814 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:40:05" (1/3) ... [2023-11-06 22:40:15,815 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516f1248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:15, skipping insertion in model container [2023-11-06 22:40:15,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:40:08" (2/3) ... [2023-11-06 22:40:15,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@516f1248 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:40:15, skipping insertion in model container [2023-11-06 22:40:15,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:40:15" (3/3) ... [2023-11-06 22:40:15,819 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.ufo.BOUNDED-10.pals+Problem12_label09.c [2023-11-06 22:40:15,845 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:40:15,846 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:40:15,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:40:15,979 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6e89ee85, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:40:15,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:40:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:16,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:40:16,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:16,007 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:16,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:16,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:16,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1798739915, now seen corresponding path program 1 times [2023-11-06 22:40:16,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:16,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983470946] [2023-11-06 22:40:16,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:16,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:16,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:16,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:16,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983470946] [2023-11-06 22:40:16,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983470946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:16,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:16,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:40:16,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426981848] [2023-11-06 22:40:16,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:16,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:40:16,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:16,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:40:16,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:40:16,476 INFO L87 Difference]: Start difference. First operand has 899 states, 896 states have (on average 1.9051339285714286) internal successors, (1707), 898 states have internal predecessors, (1707), 0 states have call successors, (0), 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 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:16,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:16,608 INFO L93 Difference]: Finished difference Result 1761 states and 3344 transitions. [2023-11-06 22:40:16,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:40:16,611 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-11-06 22:40:16,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:16,637 INFO L225 Difference]: With dead ends: 1761 [2023-11-06 22:40:16,637 INFO L226 Difference]: Without dead ends: 833 [2023-11-06 22:40:16,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:40:16,650 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1641 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:16,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1641 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:16,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-06 22:40:16,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2023-11-06 22:40:16,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8941034897713598) internal successors, (1574), 832 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1574 transitions. [2023-11-06 22:40:16,751 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1574 transitions. Word has length 24 [2023-11-06 22:40:16,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:16,752 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1574 transitions. [2023-11-06 22:40:16,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:16,752 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1574 transitions. [2023-11-06 22:40:16,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:40:16,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:16,754 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] [2023-11-06 22:40:16,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:40:16,755 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:16,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:16,756 INFO L85 PathProgramCache]: Analyzing trace with hash 502082675, now seen corresponding path program 1 times [2023-11-06 22:40:16,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:16,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800167245] [2023-11-06 22:40:16,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:16,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:17,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:17,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:17,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800167245] [2023-11-06 22:40:17,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800167245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:17,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:17,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:40:17,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39876374] [2023-11-06 22:40:17,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:17,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:40:17,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:17,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:40:17,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:17,083 INFO L87 Difference]: Start difference. First operand 833 states and 1574 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:17,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:17,326 INFO L93 Difference]: Finished difference Result 879 states and 1645 transitions. [2023-11-06 22:40:17,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:40:17,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 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 24 [2023-11-06 22:40:17,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:17,338 INFO L225 Difference]: With dead ends: 879 [2023-11-06 22:40:17,339 INFO L226 Difference]: Without dead ends: 833 [2023-11-06 22:40:17,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:17,342 INFO L413 NwaCegarLoop]: 1572 mSDtfsCounter, 2 mSDsluCounter, 4680 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6252 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:17,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6252 Invalid, 43 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [30 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:17,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-06 22:40:17,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2023-11-06 22:40:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 831 states have (on average 1.8567990373044525) internal successors, (1543), 832 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1543 transitions. [2023-11-06 22:40:17,394 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1543 transitions. Word has length 24 [2023-11-06 22:40:17,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:17,395 INFO L495 AbstractCegarLoop]: Abstraction has 833 states and 1543 transitions. [2023-11-06 22:40:17,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:17,395 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1543 transitions. [2023-11-06 22:40:17,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:40:17,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:17,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:17,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:40:17,399 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:17,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:17,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1518044022, now seen corresponding path program 1 times [2023-11-06 22:40:17,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:17,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535972080] [2023-11-06 22:40:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:17,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:17,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:17,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:17,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:17,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535972080] [2023-11-06 22:40:17,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535972080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:17,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:17,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:17,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064392470] [2023-11-06 22:40:17,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:17,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:17,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:17,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:17,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:17,650 INFO L87 Difference]: Start difference. First operand 833 states and 1543 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:18,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:18,038 INFO L93 Difference]: Finished difference Result 1253 states and 2213 transitions. [2023-11-06 22:40:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:40:18,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2023-11-06 22:40:18,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:18,050 INFO L225 Difference]: With dead ends: 1253 [2023-11-06 22:40:18,050 INFO L226 Difference]: Without dead ends: 1211 [2023-11-06 22:40:18,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:40:18,053 INFO L413 NwaCegarLoop]: 1539 mSDtfsCounter, 7953 mSDsluCounter, 1207 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7953 SdHoareTripleChecker+Valid, 2746 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:18,054 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7953 Valid, 2746 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:40:18,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1211 states. [2023-11-06 22:40:18,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1211 to 873. [2023-11-06 22:40:18,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 873 states, 871 states have (on average 1.8450057405281286) internal successors, (1607), 872 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 873 states to 873 states and 1607 transitions. [2023-11-06 22:40:18,104 INFO L78 Accepts]: Start accepts. Automaton has 873 states and 1607 transitions. Word has length 54 [2023-11-06 22:40:18,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:18,106 INFO L495 AbstractCegarLoop]: Abstraction has 873 states and 1607 transitions. [2023-11-06 22:40:18,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:18,107 INFO L276 IsEmpty]: Start isEmpty. Operand 873 states and 1607 transitions. [2023-11-06 22:40:18,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:40:18,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:18,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:18,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:40:18,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:18,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:18,124 INFO L85 PathProgramCache]: Analyzing trace with hash 32878714, now seen corresponding path program 1 times [2023-11-06 22:40:18,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:18,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63917779] [2023-11-06 22:40:18,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:18,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:18,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:18,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63917779] [2023-11-06 22:40:18,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63917779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:18,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:18,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:18,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996780079] [2023-11-06 22:40:18,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:18,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:40:18,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:18,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:18,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:18,364 INFO L87 Difference]: Start difference. First operand 873 states and 1607 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:18,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:18,441 INFO L93 Difference]: Finished difference Result 1026 states and 1850 transitions. [2023-11-06 22:40:18,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:18,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-11-06 22:40:18,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:18,450 INFO L225 Difference]: With dead ends: 1026 [2023-11-06 22:40:18,450 INFO L226 Difference]: Without dead ends: 944 [2023-11-06 22:40:18,451 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 [2023-11-06 22:40:18,462 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 1482 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 1603 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:18,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 1603 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:18,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-06 22:40:18,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-11-06 22:40:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.824468085106383) internal successors, (1715), 941 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:18,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1715 transitions. [2023-11-06 22:40:18,516 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1715 transitions. Word has length 56 [2023-11-06 22:40:18,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:18,518 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1715 transitions. [2023-11-06 22:40:18,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:18,518 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1715 transitions. [2023-11-06 22:40:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:40:18,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:18,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:18,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:40:18,521 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:18,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:18,522 INFO L85 PathProgramCache]: Analyzing trace with hash 99372226, now seen corresponding path program 1 times [2023-11-06 22:40:18,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:18,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158929916] [2023-11-06 22:40:18,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:18,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:19,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:19,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158929916] [2023-11-06 22:40:19,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158929916] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:19,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:19,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:19,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850066854] [2023-11-06 22:40:19,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:19,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:19,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:19,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:19,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:19,005 INFO L87 Difference]: Start difference. First operand 942 states and 1715 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:19,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:19,340 INFO L93 Difference]: Finished difference Result 1095 states and 1955 transitions. [2023-11-06 22:40:19,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:40:19,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2023-11-06 22:40:19,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:19,350 INFO L225 Difference]: With dead ends: 1095 [2023-11-06 22:40:19,350 INFO L226 Difference]: Without dead ends: 944 [2023-11-06 22:40:19,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:40:19,353 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 4479 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4479 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:19,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4479 Valid, 1789 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:19,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2023-11-06 22:40:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 942. [2023-11-06 22:40:19,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 940 states have (on average 1.8223404255319149) internal successors, (1713), 941 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:19,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1713 transitions. [2023-11-06 22:40:19,413 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1713 transitions. Word has length 56 [2023-11-06 22:40:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:19,414 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1713 transitions. [2023-11-06 22:40:19,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:19,414 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1713 transitions. [2023-11-06 22:40:19,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:40:19,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:19,416 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:19,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:40:19,417 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:19,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:19,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1629151369, now seen corresponding path program 1 times [2023-11-06 22:40:19,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:19,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325074207] [2023-11-06 22:40:19,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:19,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:19,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:19,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325074207] [2023-11-06 22:40:19,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325074207] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:19,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:19,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:40:19,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193143054] [2023-11-06 22:40:19,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:19,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:40:19,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:19,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:40:19,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:40:19,843 INFO L87 Difference]: Start difference. First operand 942 states and 1713 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:20,091 INFO L93 Difference]: Finished difference Result 1061 states and 1902 transitions. [2023-11-06 22:40:20,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:40:20,097 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2023-11-06 22:40:20,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:20,105 INFO L225 Difference]: With dead ends: 1061 [2023-11-06 22:40:20,105 INFO L226 Difference]: Without dead ends: 1059 [2023-11-06 22:40:20,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:40:20,111 INFO L413 NwaCegarLoop]: 1588 mSDtfsCounter, 131 mSDsluCounter, 9348 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 10936 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:20,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 10936 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:20,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1059 states. [2023-11-06 22:40:20,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1059 to 948. [2023-11-06 22:40:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 948 states, 946 states have (on average 1.8160676532769555) internal successors, (1718), 947 states have internal predecessors, (1718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1718 transitions. [2023-11-06 22:40:20,159 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1718 transitions. Word has length 57 [2023-11-06 22:40:20,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:20,160 INFO L495 AbstractCegarLoop]: Abstraction has 948 states and 1718 transitions. [2023-11-06 22:40:20,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,164 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1718 transitions. [2023-11-06 22:40:20,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:40:20,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:20,166 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:20,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:40:20,166 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:20,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:20,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1409361730, now seen corresponding path program 1 times [2023-11-06 22:40:20,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:20,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942975282] [2023-11-06 22:40:20,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:20,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:20,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:20,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:20,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942975282] [2023-11-06 22:40:20,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942975282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:20,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:20,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:20,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504871845] [2023-11-06 22:40:20,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:20,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:40:20,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:20,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:20,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:20,261 INFO L87 Difference]: Start difference. First operand 948 states and 1718 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:20,326 INFO L93 Difference]: Finished difference Result 1118 states and 1979 transitions. [2023-11-06 22:40:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-11-06 22:40:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:20,335 INFO L225 Difference]: With dead ends: 1118 [2023-11-06 22:40:20,336 INFO L226 Difference]: Without dead ends: 1030 [2023-11-06 22:40:20,337 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 [2023-11-06 22:40:20,337 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 1496 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:20,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:20,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2023-11-06 22:40:20,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1028. [2023-11-06 22:40:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1026 states have (on average 1.7923976608187135) internal successors, (1839), 1027 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1839 transitions. [2023-11-06 22:40:20,397 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1839 transitions. Word has length 58 [2023-11-06 22:40:20,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:20,397 INFO L495 AbstractCegarLoop]: Abstraction has 1028 states and 1839 transitions. [2023-11-06 22:40:20,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1839 transitions. [2023-11-06 22:40:20,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:40:20,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:20,399 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:20,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:40:20,399 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:20,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:20,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1383487166, now seen corresponding path program 1 times [2023-11-06 22:40:20,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:20,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219542129] [2023-11-06 22:40:20,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:20,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:20,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:20,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:20,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219542129] [2023-11-06 22:40:20,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219542129] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:20,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:20,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:20,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257064324] [2023-11-06 22:40:20,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:20,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:40:20,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:20,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:20,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:20,464 INFO L87 Difference]: Start difference. First operand 1028 states and 1839 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:20,561 INFO L93 Difference]: Finished difference Result 1474 states and 2519 transitions. [2023-11-06 22:40:20,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:20,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-11-06 22:40:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:20,572 INFO L225 Difference]: With dead ends: 1474 [2023-11-06 22:40:20,572 INFO L226 Difference]: Without dead ends: 1239 [2023-11-06 22:40:20,573 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 [2023-11-06 22:40:20,574 INFO L413 NwaCegarLoop]: 1587 mSDtfsCounter, 1492 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1492 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:20,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1492 Valid, 1663 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:20,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2023-11-06 22:40:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1237. [2023-11-06 22:40:20,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1237 states, 1235 states have (on average 1.7417004048582996) internal successors, (2151), 1236 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1237 states to 1237 states and 2151 transitions. [2023-11-06 22:40:20,673 INFO L78 Accepts]: Start accepts. Automaton has 1237 states and 2151 transitions. Word has length 58 [2023-11-06 22:40:20,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:20,673 INFO L495 AbstractCegarLoop]: Abstraction has 1237 states and 2151 transitions. [2023-11-06 22:40:20,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,674 INFO L276 IsEmpty]: Start isEmpty. Operand 1237 states and 2151 transitions. [2023-11-06 22:40:20,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:40:20,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:20,675 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:20,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:40:20,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:20,675 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:20,676 INFO L85 PathProgramCache]: Analyzing trace with hash 696011330, now seen corresponding path program 1 times [2023-11-06 22:40:20,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:20,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197172141] [2023-11-06 22:40:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:20,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:20,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:20,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:20,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197172141] [2023-11-06 22:40:20,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197172141] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:20,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:20,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:20,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124476810] [2023-11-06 22:40:20,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:20,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:40:20,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:20,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:20,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:20,740 INFO L87 Difference]: Start difference. First operand 1237 states and 2151 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:20,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:20,871 INFO L93 Difference]: Finished difference Result 2077 states and 3413 transitions. [2023-11-06 22:40:20,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:20,872 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-11-06 22:40:20,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:20,882 INFO L225 Difference]: With dead ends: 2077 [2023-11-06 22:40:20,883 INFO L226 Difference]: Without dead ends: 1633 [2023-11-06 22:40:20,884 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 [2023-11-06 22:40:20,885 INFO L413 NwaCegarLoop]: 1585 mSDtfsCounter, 1490 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:20,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1490 Valid, 1665 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:20,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2023-11-06 22:40:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1631. [2023-11-06 22:40:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.6740331491712708) internal successors, (2727), 1630 states have internal predecessors, (2727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:21,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2727 transitions. [2023-11-06 22:40:21,050 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2727 transitions. Word has length 58 [2023-11-06 22:40:21,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:21,050 INFO L495 AbstractCegarLoop]: Abstraction has 1631 states and 2727 transitions. [2023-11-06 22:40:21,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:21,051 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2727 transitions. [2023-11-06 22:40:21,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:40:21,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:21,052 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:21,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:40:21,052 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:21,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:21,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1818023102, now seen corresponding path program 1 times [2023-11-06 22:40:21,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:21,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944557957] [2023-11-06 22:40:21,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:21,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:21,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:21,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944557957] [2023-11-06 22:40:21,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944557957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:21,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:21,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:21,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390500377] [2023-11-06 22:40:21,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:21,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:40:21,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:21,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:21,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:21,150 INFO L87 Difference]: Start difference. First operand 1631 states and 2727 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:21,490 INFO L93 Difference]: Finished difference Result 3211 states and 5057 transitions. [2023-11-06 22:40:21,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:21,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-11-06 22:40:21,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:21,507 INFO L225 Difference]: With dead ends: 3211 [2023-11-06 22:40:21,507 INFO L226 Difference]: Without dead ends: 2373 [2023-11-06 22:40:21,509 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 [2023-11-06 22:40:21,510 INFO L413 NwaCegarLoop]: 1583 mSDtfsCounter, 1488 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 1667 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:21,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 1667 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:21,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2023-11-06 22:40:21,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2371. [2023-11-06 22:40:21,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2371 states, 2369 states have (on average 1.5968763191219923) internal successors, (3783), 2370 states have internal predecessors, (3783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:21,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2371 states to 2371 states and 3783 transitions. [2023-11-06 22:40:21,795 INFO L78 Accepts]: Start accepts. Automaton has 2371 states and 3783 transitions. Word has length 58 [2023-11-06 22:40:21,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:21,796 INFO L495 AbstractCegarLoop]: Abstraction has 2371 states and 3783 transitions. [2023-11-06 22:40:21,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:21,796 INFO L276 IsEmpty]: Start isEmpty. Operand 2371 states and 3783 transitions. [2023-11-06 22:40:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-06 22:40:21,797 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:21,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:40:21,798 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:21,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:21,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1673218114, now seen corresponding path program 1 times [2023-11-06 22:40:21,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:21,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086980006] [2023-11-06 22:40:21,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:21,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:21,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:21,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:21,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086980006] [2023-11-06 22:40:21,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086980006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:21,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:21,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:21,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448038129] [2023-11-06 22:40:21,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:21,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:40:21,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:21,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:40:21,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:40:21,881 INFO L87 Difference]: Start difference. First operand 2371 states and 3783 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:22,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:22,504 INFO L93 Difference]: Finished difference Result 5335 states and 8057 transitions. [2023-11-06 22:40:22,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:40:22,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 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 58 [2023-11-06 22:40:22,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:22,532 INFO L225 Difference]: With dead ends: 5335 [2023-11-06 22:40:22,532 INFO L226 Difference]: Without dead ends: 3757 [2023-11-06 22:40:22,536 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 [2023-11-06 22:40:22,537 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1494 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1494 SdHoareTripleChecker+Valid, 1669 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:22,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1494 Valid, 1669 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:40:22,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3757 states. [2023-11-06 22:40:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3757 to 3755. [2023-11-06 22:40:23,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3755 states, 3753 states have (on average 1.5195843325339728) internal successors, (5703), 3754 states have internal predecessors, (5703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 5703 transitions. [2023-11-06 22:40:23,102 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 5703 transitions. Word has length 58 [2023-11-06 22:40:23,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:23,103 INFO L495 AbstractCegarLoop]: Abstraction has 3755 states and 5703 transitions. [2023-11-06 22:40:23,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:23,103 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 5703 transitions. [2023-11-06 22:40:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 22:40:23,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:23,109 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:23,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:40:23,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:23,111 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:23,111 INFO L85 PathProgramCache]: Analyzing trace with hash 701701722, now seen corresponding path program 1 times [2023-11-06 22:40:23,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:23,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005852294] [2023-11-06 22:40:23,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:23,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:23,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:40:23,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:23,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005852294] [2023-11-06 22:40:23,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005852294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:23,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:23,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:40:23,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561627951] [2023-11-06 22:40:23,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:23,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 22:40:23,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:23,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 22:40:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 22:40:23,448 INFO L87 Difference]: Start difference. First operand 3755 states and 5703 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:33,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:33,846 INFO L93 Difference]: Finished difference Result 6010 states and 10012 transitions. [2023-11-06 22:40:33,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 22:40:33,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2023-11-06 22:40:33,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:33,877 INFO L225 Difference]: With dead ends: 6010 [2023-11-06 22:40:33,877 INFO L226 Difference]: Without dead ends: 5257 [2023-11-06 22:40:33,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:40:33,880 INFO L413 NwaCegarLoop]: 779 mSDtfsCounter, 2387 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5354 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2387 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 6507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:33,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2387 Valid, 797 Invalid, 6507 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1153 Valid, 5354 Invalid, 0 Unknown, 0 Unchecked, 9.3s Time] [2023-11-06 22:40:33,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5257 states. [2023-11-06 22:40:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5257 to 5257. [2023-11-06 22:40:34,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5257 states, 5255 states have (on average 1.487535680304472) internal successors, (7817), 5256 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5257 states to 5257 states and 7817 transitions. [2023-11-06 22:40:34,564 INFO L78 Accepts]: Start accepts. Automaton has 5257 states and 7817 transitions. Word has length 67 [2023-11-06 22:40:34,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:34,564 INFO L495 AbstractCegarLoop]: Abstraction has 5257 states and 7817 transitions. [2023-11-06 22:40:34,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:34,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5257 states and 7817 transitions. [2023-11-06 22:40:34,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:40:34,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:34,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:34,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:40:34,568 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:34,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:34,569 INFO L85 PathProgramCache]: Analyzing trace with hash 273219202, now seen corresponding path program 1 times [2023-11-06 22:40:34,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:34,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199854240] [2023-11-06 22:40:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:34,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:34,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:40:34,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:34,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199854240] [2023-11-06 22:40:34,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199854240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:34,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:34,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:34,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474131719] [2023-11-06 22:40:34,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:34,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:34,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:34,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:34,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:34,790 INFO L87 Difference]: Start difference. First operand 5257 states and 7817 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:37,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:37,880 INFO L93 Difference]: Finished difference Result 19861 states and 28623 transitions. [2023-11-06 22:40:37,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:40:37,881 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 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 77 [2023-11-06 22:40:37,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:37,944 INFO L225 Difference]: With dead ends: 19861 [2023-11-06 22:40:37,944 INFO L226 Difference]: Without dead ends: 17747 [2023-11-06 22:40:37,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:40:37,952 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6305 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6305 SdHoareTripleChecker+Valid, 3588 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:37,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6305 Valid, 3588 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17747 states. [2023-11-06 22:40:39,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17747 to 7801. [2023-11-06 22:40:39,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7801 states, 7799 states have (on average 1.4618540838569047) internal successors, (11401), 7800 states have internal predecessors, (11401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:39,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7801 states to 7801 states and 11401 transitions. [2023-11-06 22:40:39,055 INFO L78 Accepts]: Start accepts. Automaton has 7801 states and 11401 transitions. Word has length 77 [2023-11-06 22:40:39,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:39,055 INFO L495 AbstractCegarLoop]: Abstraction has 7801 states and 11401 transitions. [2023-11-06 22:40:39,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:39,056 INFO L276 IsEmpty]: Start isEmpty. Operand 7801 states and 11401 transitions. [2023-11-06 22:40:39,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:40:39,059 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:39,059 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:39,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:40:39,060 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:39,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:39,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1775337602, now seen corresponding path program 1 times [2023-11-06 22:40:39,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:39,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665471619] [2023-11-06 22:40:39,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:39,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:39,242 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:40:39,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:39,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665471619] [2023-11-06 22:40:39,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665471619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:39,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:39,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:39,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386100506] [2023-11-06 22:40:39,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:39,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:39,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:39,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:39,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:39,246 INFO L87 Difference]: Start difference. First operand 7801 states and 11401 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:42,222 INFO L93 Difference]: Finished difference Result 22821 states and 32815 transitions. [2023-11-06 22:40:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:40:42,222 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 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 77 [2023-11-06 22:40:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:42,271 INFO L225 Difference]: With dead ends: 22821 [2023-11-06 22:40:42,271 INFO L226 Difference]: Without dead ends: 19859 [2023-11-06 22:40:42,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:40:42,280 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 6353 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6353 SdHoareTripleChecker+Valid, 3597 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:42,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6353 Valid, 3597 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:42,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19859 states. [2023-11-06 22:40:44,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19859 to 11817. [2023-11-06 22:40:44,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11817 states, 11815 states have (on average 1.4429961912822682) internal successors, (17049), 11816 states have internal predecessors, (17049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:44,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11817 states to 11817 states and 17049 transitions. [2023-11-06 22:40:44,128 INFO L78 Accepts]: Start accepts. Automaton has 11817 states and 17049 transitions. Word has length 77 [2023-11-06 22:40:44,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:44,129 INFO L495 AbstractCegarLoop]: Abstraction has 11817 states and 17049 transitions. [2023-11-06 22:40:44,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 7 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:44,129 INFO L276 IsEmpty]: Start isEmpty. Operand 11817 states and 17049 transitions. [2023-11-06 22:40:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:40:44,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:44,133 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:44,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:40:44,133 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:44,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:44,134 INFO L85 PathProgramCache]: Analyzing trace with hash -440131198, now seen corresponding path program 1 times [2023-11-06 22:40:44,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:44,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403797087] [2023-11-06 22:40:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:44,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 22:40:44,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:44,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403797087] [2023-11-06 22:40:44,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403797087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:44,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:44,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:44,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97477135] [2023-11-06 22:40:44,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:44,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:44,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:44,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:44,314 INFO L87 Difference]: Start difference. First operand 11817 states and 17049 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:47,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:47,946 INFO L93 Difference]: Finished difference Result 25781 states and 36991 transitions. [2023-11-06 22:40:47,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:40:47,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 77 [2023-11-06 22:40:47,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:47,997 INFO L225 Difference]: With dead ends: 25781 [2023-11-06 22:40:47,997 INFO L226 Difference]: Without dead ends: 22819 [2023-11-06 22:40:48,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:40:48,009 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6397 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6397 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:48,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6397 Valid, 3578 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22819 states. [2023-11-06 22:40:50,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22819 to 14777. [2023-11-06 22:40:50,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14777 states, 14775 states have (on average 1.4365482233502538) internal successors, (21225), 14776 states have internal predecessors, (21225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:50,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14777 states to 14777 states and 21225 transitions. [2023-11-06 22:40:50,293 INFO L78 Accepts]: Start accepts. Automaton has 14777 states and 21225 transitions. Word has length 77 [2023-11-06 22:40:50,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:50,293 INFO L495 AbstractCegarLoop]: Abstraction has 14777 states and 21225 transitions. [2023-11-06 22:40:50,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:50,294 INFO L276 IsEmpty]: Start isEmpty. Operand 14777 states and 21225 transitions. [2023-11-06 22:40:50,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:40:50,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:50,298 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:50,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:40:50,298 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:50,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:50,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1340801666, now seen corresponding path program 1 times [2023-11-06 22:40:50,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:50,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107271528] [2023-11-06 22:40:50,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:50,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:50,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 22:40:50,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:50,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107271528] [2023-11-06 22:40:50,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107271528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:50,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:50,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:50,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535520783] [2023-11-06 22:40:50,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:50,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:50,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:50,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:50,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:50,489 INFO L87 Difference]: Start difference. First operand 14777 states and 21225 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:55,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:40:55,034 INFO L93 Difference]: Finished difference Result 28741 states and 41167 transitions. [2023-11-06 22:40:55,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:40:55,035 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 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 77 [2023-11-06 22:40:55,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:40:55,082 INFO L225 Difference]: With dead ends: 28741 [2023-11-06 22:40:55,082 INFO L226 Difference]: Without dead ends: 25779 [2023-11-06 22:40:55,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:40:55,093 INFO L413 NwaCegarLoop]: 1602 mSDtfsCounter, 6355 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6355 SdHoareTripleChecker+Valid, 3604 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:40:55,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6355 Valid, 3604 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:40:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25779 states. [2023-11-06 22:40:58,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25779 to 17737. [2023-11-06 22:40:58,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17737 states, 17735 states have (on average 1.4322526078376092) internal successors, (25401), 17736 states have internal predecessors, (25401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:58,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17737 states to 17737 states and 25401 transitions. [2023-11-06 22:40:58,186 INFO L78 Accepts]: Start accepts. Automaton has 17737 states and 25401 transitions. Word has length 77 [2023-11-06 22:40:58,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:40:58,187 INFO L495 AbstractCegarLoop]: Abstraction has 17737 states and 25401 transitions. [2023-11-06 22:40:58,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 7 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:40:58,187 INFO L276 IsEmpty]: Start isEmpty. Operand 17737 states and 25401 transitions. [2023-11-06 22:40:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 22:40:58,190 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:40:58,190 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:40:58,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:40:58,191 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:40:58,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:40:58,191 INFO L85 PathProgramCache]: Analyzing trace with hash 537075586, now seen corresponding path program 1 times [2023-11-06 22:40:58,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:40:58,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437223326] [2023-11-06 22:40:58,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:40:58,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:40:58,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:40:58,367 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:40:58,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:40:58,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437223326] [2023-11-06 22:40:58,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437223326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:40:58,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:40:58,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 22:40:58,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785417800] [2023-11-06 22:40:58,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:40:58,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:40:58,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:40:58,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:40:58,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:40:58,371 INFO L87 Difference]: Start difference. First operand 17737 states and 25401 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:03,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:03,939 INFO L93 Difference]: Finished difference Result 31701 states and 45343 transitions. [2023-11-06 22:41:03,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:41:03,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 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 77 [2023-11-06 22:41:03,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:03,991 INFO L225 Difference]: With dead ends: 31701 [2023-11-06 22:41:03,991 INFO L226 Difference]: Without dead ends: 28739 [2023-11-06 22:41:04,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:41:04,002 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 6307 mSDsluCounter, 2097 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6307 SdHoareTripleChecker+Valid, 3698 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:04,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6307 Valid, 3698 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:41:04,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28739 states. [2023-11-06 22:41:07,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28739 to 20697. [2023-11-06 22:41:07,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4291857936699686) internal successors, (29577), 20696 states have internal predecessors, (29577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:07,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29577 transitions. [2023-11-06 22:41:07,720 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29577 transitions. Word has length 77 [2023-11-06 22:41:07,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:07,720 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29577 transitions. [2023-11-06 22:41:07,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:07,720 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29577 transitions. [2023-11-06 22:41:07,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-06 22:41:07,725 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:07,725 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:07,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:41:07,726 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:07,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:07,726 INFO L85 PathProgramCache]: Analyzing trace with hash 895246760, now seen corresponding path program 1 times [2023-11-06 22:41:07,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:07,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111374464] [2023-11-06 22:41:07,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:07,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:07,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:07,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111374464] [2023-11-06 22:41:07,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111374464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:07,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:07,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:07,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647453767] [2023-11-06 22:41:07,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:07,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:07,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:07,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:07,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:07,857 INFO L87 Difference]: Start difference. First operand 20697 states and 29577 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:11,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:11,351 INFO L93 Difference]: Finished difference Result 39101 states and 55563 transitions. [2023-11-06 22:41:11,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:11,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2023-11-06 22:41:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:11,388 INFO L225 Difference]: With dead ends: 39101 [2023-11-06 22:41:11,389 INFO L226 Difference]: Without dead ends: 20699 [2023-11-06 22:41:11,414 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 [2023-11-06 22:41:11,415 INFO L413 NwaCegarLoop]: 1577 mSDtfsCounter, 45 mSDsluCounter, 1531 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 3108 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:11,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 3108 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:11,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20699 states. [2023-11-06 22:41:15,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20699 to 20697. [2023-11-06 22:41:15,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20697 states, 20695 states have (on average 1.4148828219376661) internal successors, (29281), 20696 states have internal predecessors, (29281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:15,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20697 states to 20697 states and 29281 transitions. [2023-11-06 22:41:15,221 INFO L78 Accepts]: Start accepts. Automaton has 20697 states and 29281 transitions. Word has length 78 [2023-11-06 22:41:15,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:15,221 INFO L495 AbstractCegarLoop]: Abstraction has 20697 states and 29281 transitions. [2023-11-06 22:41:15,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:15,221 INFO L276 IsEmpty]: Start isEmpty. Operand 20697 states and 29281 transitions. [2023-11-06 22:41:15,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-06 22:41:15,225 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:15,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:15,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:41:15,226 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:15,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:15,227 INFO L85 PathProgramCache]: Analyzing trace with hash -615640646, now seen corresponding path program 1 times [2023-11-06 22:41:15,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:15,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027174462] [2023-11-06 22:41:15,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:15,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:15,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:15,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027174462] [2023-11-06 22:41:15,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027174462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:15,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:15,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:15,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861220166] [2023-11-06 22:41:15,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:15,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:15,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:15,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:15,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:15,366 INFO L87 Difference]: Start difference. First operand 20697 states and 29281 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:17,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:17,105 INFO L93 Difference]: Finished difference Result 27584 states and 38975 transitions. [2023-11-06 22:41:17,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:17,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-06 22:41:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:17,117 INFO L225 Difference]: With dead ends: 27584 [2023-11-06 22:41:17,117 INFO L226 Difference]: Without dead ends: 9182 [2023-11-06 22:41:17,133 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 [2023-11-06 22:41:17,134 INFO L413 NwaCegarLoop]: 1575 mSDtfsCounter, 39 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 3105 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:17,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 3105 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:17,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9182 states. [2023-11-06 22:41:18,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9182 to 9174. [2023-11-06 22:41:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9174 states, 9172 states have (on average 1.4363279546445704) internal successors, (13174), 9173 states have internal predecessors, (13174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:18,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9174 states to 9174 states and 13174 transitions. [2023-11-06 22:41:18,571 INFO L78 Accepts]: Start accepts. Automaton has 9174 states and 13174 transitions. Word has length 79 [2023-11-06 22:41:18,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:18,572 INFO L495 AbstractCegarLoop]: Abstraction has 9174 states and 13174 transitions. [2023-11-06 22:41:18,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:18,572 INFO L276 IsEmpty]: Start isEmpty. Operand 9174 states and 13174 transitions. [2023-11-06 22:41:18,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 22:41:18,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:18,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:18,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:41:18,575 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:18,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:18,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1683802150, now seen corresponding path program 1 times [2023-11-06 22:41:18,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:18,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78031737] [2023-11-06 22:41:18,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:18,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:18,686 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:18,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:18,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78031737] [2023-11-06 22:41:18,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78031737] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:18,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:18,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:18,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347119700] [2023-11-06 22:41:18,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:18,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:18,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:18,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:18,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:18,689 INFO L87 Difference]: Start difference. First operand 9174 states and 13174 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:19,470 INFO L93 Difference]: Finished difference Result 12610 states and 17960 transitions. [2023-11-06 22:41:19,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:19,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2023-11-06 22:41:19,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:19,478 INFO L225 Difference]: With dead ends: 12610 [2023-11-06 22:41:19,478 INFO L226 Difference]: Without dead ends: 5744 [2023-11-06 22:41:19,485 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 [2023-11-06 22:41:19,486 INFO L413 NwaCegarLoop]: 1569 mSDtfsCounter, 41 mSDsluCounter, 1515 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:19,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 3084 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:19,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5744 states. [2023-11-06 22:41:20,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5744 to 5742. [2023-11-06 22:41:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5742 states, 5740 states have (on average 1.4526132404181185) internal successors, (8338), 5741 states have internal predecessors, (8338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:20,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5742 states to 5742 states and 8338 transitions. [2023-11-06 22:41:20,148 INFO L78 Accepts]: Start accepts. Automaton has 5742 states and 8338 transitions. Word has length 80 [2023-11-06 22:41:20,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:20,148 INFO L495 AbstractCegarLoop]: Abstraction has 5742 states and 8338 transitions. [2023-11-06 22:41:20,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:20,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5742 states and 8338 transitions. [2023-11-06 22:41:20,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-06 22:41:20,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:20,150 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:20,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-06 22:41:20,151 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:20,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:20,151 INFO L85 PathProgramCache]: Analyzing trace with hash 263472268, now seen corresponding path program 1 times [2023-11-06 22:41:20,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:20,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141753966] [2023-11-06 22:41:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:20,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:20,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:20,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141753966] [2023-11-06 22:41:20,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141753966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:20,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:20,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:20,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339369226] [2023-11-06 22:41:20,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:20,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:20,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:20,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:20,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:20,297 INFO L87 Difference]: Start difference. First operand 5742 states and 8338 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:20,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:20,844 INFO L93 Difference]: Finished difference Result 7462 states and 10706 transitions. [2023-11-06 22:41:20,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:20,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2023-11-06 22:41:20,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:20,850 INFO L225 Difference]: With dead ends: 7462 [2023-11-06 22:41:20,851 INFO L226 Difference]: Without dead ends: 4028 [2023-11-06 22:41:20,854 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 [2023-11-06 22:41:20,855 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 38 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 3069 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:20,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 3069 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4028 states. [2023-11-06 22:41:21,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4028 to 4026. [2023-11-06 22:41:21,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4026 states, 4024 states have (on average 1.4776341948310139) internal successors, (5946), 4025 states have internal predecessors, (5946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:21,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4026 states to 4026 states and 5946 transitions. [2023-11-06 22:41:21,382 INFO L78 Accepts]: Start accepts. Automaton has 4026 states and 5946 transitions. Word has length 82 [2023-11-06 22:41:21,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:21,382 INFO L495 AbstractCegarLoop]: Abstraction has 4026 states and 5946 transitions. [2023-11-06 22:41:21,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 3 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:21,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4026 states and 5946 transitions. [2023-11-06 22:41:21,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-06 22:41:21,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:21,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:21,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 22:41:21,385 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:21,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1956730946, now seen corresponding path program 1 times [2023-11-06 22:41:21,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:21,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010302792] [2023-11-06 22:41:21,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:21,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:21,513 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:21,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010302792] [2023-11-06 22:41:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010302792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:41:21,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:41:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:41:21,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536841521] [2023-11-06 22:41:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:41:21,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:41:21,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:21,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:41:21,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:41:21,516 INFO L87 Difference]: Start difference. First operand 4026 states and 5946 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:21,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:21,808 INFO L93 Difference]: Finished difference Result 4888 states and 7118 transitions. [2023-11-06 22:41:21,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:41:21,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2023-11-06 22:41:21,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:21,813 INFO L225 Difference]: With dead ends: 4888 [2023-11-06 22:41:21,813 INFO L226 Difference]: Without dead ends: 3170 [2023-11-06 22:41:21,816 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 [2023-11-06 22:41:21,817 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 35 mSDsluCounter, 1499 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 3054 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:21,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 3054 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:41:21,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2023-11-06 22:41:22,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3168. [2023-11-06 22:41:22,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3166 states have (on average 1.5044219835754895) internal successors, (4763), 3167 states have internal predecessors, (4763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4763 transitions. [2023-11-06 22:41:22,036 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4763 transitions. Word has length 84 [2023-11-06 22:41:22,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:22,036 INFO L495 AbstractCegarLoop]: Abstraction has 3168 states and 4763 transitions. [2023-11-06 22:41:22,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:22,036 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4763 transitions. [2023-11-06 22:41:22,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-11-06 22:41:22,037 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:22,038 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:22,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-06 22:41:22,038 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:22,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:22,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1389986160, now seen corresponding path program 1 times [2023-11-06 22:41:22,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:22,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020082574] [2023-11-06 22:41:22,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:22,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:23,099 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020082574] [2023-11-06 22:41:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020082574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102341280] [2023-11-06 22:41:23,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:23,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:23,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:23,104 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:23,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:41:23,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:23,271 INFO L262 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:41:23,282 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:23,536 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:41:23,537 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:41:23,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102341280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:23,974 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:23,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2023-11-06 22:41:23,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674788802] [2023-11-06 22:41:23,975 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:23,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:41:23,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:23,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:41:23,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:41:23,978 INFO L87 Difference]: Start difference. First operand 3168 states and 4763 transitions. Second operand has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:27,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:27,937 INFO L93 Difference]: Finished difference Result 7694 states and 10698 transitions. [2023-11-06 22:41:27,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-06 22:41:27,938 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 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 86 [2023-11-06 22:41:27,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:27,944 INFO L225 Difference]: With dead ends: 7694 [2023-11-06 22:41:27,944 INFO L226 Difference]: Without dead ends: 6834 [2023-11-06 22:41:27,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=616, Invalid=2576, Unknown=0, NotChecked=0, Total=3192 [2023-11-06 22:41:27,948 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 16324 mSDsluCounter, 6329 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16324 SdHoareTripleChecker+Valid, 7835 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:27,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16324 Valid, 7835 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:41:27,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6834 states. [2023-11-06 22:41:28,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6834 to 6504. [2023-11-06 22:41:28,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6504 states, 6502 states have (on average 1.3854198708089818) internal successors, (9008), 6503 states have internal predecessors, (9008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6504 states to 6504 states and 9008 transitions. [2023-11-06 22:41:28,932 INFO L78 Accepts]: Start accepts. Automaton has 6504 states and 9008 transitions. Word has length 86 [2023-11-06 22:41:28,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:28,932 INFO L495 AbstractCegarLoop]: Abstraction has 6504 states and 9008 transitions. [2023-11-06 22:41:28,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 12.68421052631579) internal successors, (241), 19 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:28,933 INFO L276 IsEmpty]: Start isEmpty. Operand 6504 states and 9008 transitions. [2023-11-06 22:41:28,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:41:28,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:28,935 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:28,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:29,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:29,141 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:29,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:29,141 INFO L85 PathProgramCache]: Analyzing trace with hash -1667542172, now seen corresponding path program 1 times [2023-11-06 22:41:29,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:29,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304535487] [2023-11-06 22:41:29,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:29,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:31,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:31,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304535487] [2023-11-06 22:41:31,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304535487] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:31,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643089729] [2023-11-06 22:41:31,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:31,056 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:31,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:31,057 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:31,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:41:31,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:31,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-06 22:41:31,195 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:31,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:31,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:33,331 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:33,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643089729] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:33,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:33,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2023-11-06 22:41:33,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202264093] [2023-11-06 22:41:33,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:41:33,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:33,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:41:33,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=704, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:41:33,335 INFO L87 Difference]: Start difference. First operand 6504 states and 9008 transitions. Second operand has 29 states, 29 states have (on average 8.517241379310345) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:41:44,260 INFO L93 Difference]: Finished difference Result 25014 states and 32768 transitions. [2023-11-06 22:41:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-06 22:41:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 8.517241379310345) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 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 87 [2023-11-06 22:41:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:41:44,285 INFO L225 Difference]: With dead ends: 25014 [2023-11-06 22:41:44,285 INFO L226 Difference]: Without dead ends: 20977 [2023-11-06 22:41:44,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1185 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=956, Invalid=4156, Unknown=0, NotChecked=0, Total=5112 [2023-11-06 22:41:44,292 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 25012 mSDsluCounter, 5267 mSDsCounter, 0 mSdLazyCounter, 1046 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25012 SdHoareTripleChecker+Valid, 6787 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:41:44,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25012 Valid, 6787 Invalid, 1090 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [44 Valid, 1046 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 22:41:44,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20977 states. [2023-11-06 22:41:49,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20977 to 19751. [2023-11-06 22:41:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19751 states, 19749 states have (on average 1.302546964403261) internal successors, (25724), 19750 states have internal predecessors, (25724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19751 states to 19751 states and 25724 transitions. [2023-11-06 22:41:49,609 INFO L78 Accepts]: Start accepts. Automaton has 19751 states and 25724 transitions. Word has length 87 [2023-11-06 22:41:49,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:41:49,610 INFO L495 AbstractCegarLoop]: Abstraction has 19751 states and 25724 transitions. [2023-11-06 22:41:49,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 8.517241379310345) internal successors, (247), 28 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:41:49,610 INFO L276 IsEmpty]: Start isEmpty. Operand 19751 states and 25724 transitions. [2023-11-06 22:41:49,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-06 22:41:49,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:41:49,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:41:49,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:41:49,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:41:49,820 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:41:49,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:41:49,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1844959644, now seen corresponding path program 1 times [2023-11-06 22:41:49,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:41:49,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760141443] [2023-11-06 22:41:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:49,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:41:49,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:50,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:41:50,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760141443] [2023-11-06 22:41:50,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760141443] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:41:50,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118582583] [2023-11-06 22:41:50,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:41:50,187 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:41:50,188 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:41:50,189 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:41:50,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:41:50,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:41:50,337 INFO L262 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:41:50,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:41:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:51,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:41:52,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:41:52,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118582583] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:41:52,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:41:52,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-06 22:41:52,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847889190] [2023-11-06 22:41:52,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:41:52,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:41:52,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:41:52,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:41:52,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:41:52,463 INFO L87 Difference]: Start difference. First operand 19751 states and 25724 transitions. Second operand has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 29 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:05,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:05,152 INFO L93 Difference]: Finished difference Result 53572 states and 68600 transitions. [2023-11-06 22:42:05,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:42:05,153 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 29 states have internal predecessors, (215), 0 states have call successors, (0), 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 87 [2023-11-06 22:42:05,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:05,194 INFO L225 Difference]: With dead ends: 53572 [2023-11-06 22:42:05,194 INFO L226 Difference]: Without dead ends: 38450 [2023-11-06 22:42:05,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 441 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=476, Invalid=1504, Unknown=0, NotChecked=0, Total=1980 [2023-11-06 22:42:05,205 INFO L413 NwaCegarLoop]: 1526 mSDtfsCounter, 13690 mSDsluCounter, 7878 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13690 SdHoareTripleChecker+Valid, 9404 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:05,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13690 Valid, 9404 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:42:05,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38450 states. [2023-11-06 22:42:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38450 to 36916. [2023-11-06 22:42:16,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36916 states, 36914 states have (on average 1.2736360188546352) internal successors, (47015), 36915 states have internal predecessors, (47015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36916 states to 36916 states and 47015 transitions. [2023-11-06 22:42:16,858 INFO L78 Accepts]: Start accepts. Automaton has 36916 states and 47015 transitions. Word has length 87 [2023-11-06 22:42:16,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:16,858 INFO L495 AbstractCegarLoop]: Abstraction has 36916 states and 47015 transitions. [2023-11-06 22:42:16,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.413793103448276) internal successors, (215), 29 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:16,858 INFO L276 IsEmpty]: Start isEmpty. Operand 36916 states and 47015 transitions. [2023-11-06 22:42:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-06 22:42:16,861 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:16,862 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:16,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:17,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:42:17,068 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:17,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:17,069 INFO L85 PathProgramCache]: Analyzing trace with hash -437181294, now seen corresponding path program 1 times [2023-11-06 22:42:17,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:17,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453737833] [2023-11-06 22:42:17,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:17,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:17,552 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:17,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:17,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453737833] [2023-11-06 22:42:17,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453737833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:17,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502072332] [2023-11-06 22:42:17,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:17,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:17,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:17,557 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:17,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:42:17,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:17,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:42:17,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:18,494 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:18,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:19,628 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:19,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502072332] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:19,628 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:19,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-06 22:42:19,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916937479] [2023-11-06 22:42:19,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:19,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:42:19,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:19,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:42:19,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=619, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:42:19,631 INFO L87 Difference]: Start difference. First operand 36916 states and 47015 transitions. Second operand has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:42:35,258 INFO L93 Difference]: Finished difference Result 69501 states and 87810 transitions. [2023-11-06 22:42:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 22:42:35,259 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 0 states have call successors, (0), 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 88 [2023-11-06 22:42:35,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:42:35,314 INFO L225 Difference]: With dead ends: 69501 [2023-11-06 22:42:35,314 INFO L226 Difference]: Without dead ends: 40194 [2023-11-06 22:42:35,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=448, Invalid=1444, Unknown=0, NotChecked=0, Total=1892 [2023-11-06 22:42:35,333 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 15116 mSDsluCounter, 7917 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15116 SdHoareTripleChecker+Valid, 9447 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:42:35,333 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15116 Valid, 9447 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:42:35,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40194 states. [2023-11-06 22:42:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40194 to 36420. [2023-11-06 22:42:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36420 states, 36418 states have (on average 1.2656378713822836) internal successors, (46092), 36419 states have internal predecessors, (46092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:49,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36420 states to 36420 states and 46092 transitions. [2023-11-06 22:42:49,183 INFO L78 Accepts]: Start accepts. Automaton has 36420 states and 46092 transitions. Word has length 88 [2023-11-06 22:42:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:42:49,184 INFO L495 AbstractCegarLoop]: Abstraction has 36420 states and 46092 transitions. [2023-11-06 22:42:49,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.0) internal successors, (224), 28 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:42:49,185 INFO L276 IsEmpty]: Start isEmpty. Operand 36420 states and 46092 transitions. [2023-11-06 22:42:49,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 22:42:49,189 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:42:49,189 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:42:49,198 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:42:49,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 22:42:49,397 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:42:49,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:42:49,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1760002960, now seen corresponding path program 1 times [2023-11-06 22:42:49,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:42:49,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845214254] [2023-11-06 22:42:49,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:49,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:42:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:50,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:42:50,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845214254] [2023-11-06 22:42:50,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845214254] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:42:50,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277148535] [2023-11-06 22:42:50,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:42:50,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:42:50,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:42:50,096 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:42:50,098 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfe4e63-e582-4a49-a616-fa860aab22ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:42:50,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:42:50,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:42:50,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:42:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:50,899 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:42:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:42:52,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277148535] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:42:52,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:42:52,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 27 [2023-11-06 22:42:52,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748171143] [2023-11-06 22:42:52,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:42:52,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:42:52,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:42:52,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:42:52,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=574, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:42:52,574 INFO L87 Difference]: Start difference. First operand 36420 states and 46092 transitions. Second operand has 27 states, 27 states have (on average 8.481481481481481) internal successors, (229), 27 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)