./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.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_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/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_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/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_1cfe10ae-b46b-42ca-b926-fa453e47f17e/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 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:28:05,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:28:06,036 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-06 22:28:06,045 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:28:06,046 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:28:06,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:28:06,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:28:06,089 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:28:06,091 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:28:06,097 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:28:06,098 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:28:06,099 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:28:06,100 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:28:06,102 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:28:06,102 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:28:06,103 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:28:06,103 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:28:06,104 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:28:06,104 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:28:06,105 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:28:06,105 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:28:06,106 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:28:06,107 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:28:06,107 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:28:06,108 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:28:06,108 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:28:06,109 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:28:06,109 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:28:06,110 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:06,111 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:28:06,112 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:28:06,112 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:28:06,113 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:28:06,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:28:06,113 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:28:06,113 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:28:06,114 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:28:06,114 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:28:06,114 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:28:06,115 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_1cfe10ae-b46b-42ca-b926-fa453e47f17e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 12e64e5880a6492945a65c8a75846fcd1e471751df63fa7462470a498bbbc9fb [2023-11-06 22:28:06,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:28:06,501 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:28:06,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:28:06,506 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:28:06,506 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:28:06,508 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-11-06 22:28:09,535 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:28:10,100 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:28:10,100 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-11-06 22:28:10,145 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/data/ce5433fb7/8a91bc9e57af4b2ea8380915b212e682/FLAG0d5e36a6c [2023-11-06 22:28:10,162 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/data/ce5433fb7/8a91bc9e57af4b2ea8380915b212e682 [2023-11-06 22:28:10,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:28:10,171 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:28:10,175 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:10,175 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:28:10,181 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:28:10,182 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:10" (1/1) ... [2023-11-06 22:28:10,183 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1432b552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:10, skipping insertion in model container [2023-11-06 22:28:10,184 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:10" (1/1) ... [2023-11-06 22:28:10,339 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:28:10,779 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_1cfe10ae-b46b-42ca-b926-fa453e47f17e/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2023-11-06 22:28:10,887 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_1cfe10ae-b46b-42ca-b926-fa453e47f17e/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2023-11-06 22:28:11,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:11,976 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:28:12,016 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_1cfe10ae-b46b-42ca-b926-fa453e47f17e/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[6487,6500] [2023-11-06 22:28:12,029 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_1cfe10ae-b46b-42ca-b926-fa453e47f17e/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c[13548,13561] [2023-11-06 22:28:12,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:28:12,668 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:28:12,669 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12 WrapperNode [2023-11-06 22:28:12,669 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:28:12,670 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:12,671 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:28:12,671 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:28:12,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:12,767 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,197 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-11-06 22:28:13,197 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:28:13,198 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:28:13,198 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:28:13,198 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:28:13,208 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,208 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,313 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,323 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,561 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,642 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,730 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:28:13,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:28:13,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:28:13,806 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:28:13,807 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (1/1) ... [2023-11-06 22:28:13,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:28:13,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:13,869 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:28:13,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:28:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:28:13,974 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:28:13,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:28:13,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:28:14,095 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:28:14,106 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:28:19,544 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:28:19,560 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:28:19,560 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-06 22:28:19,564 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:19 BoogieIcfgContainer [2023-11-06 22:28:19,565 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:28:19,567 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:28:19,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:28:19,572 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:28:19,572 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:10" (1/3) ... [2023-11-06 22:28:19,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b157f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:19, skipping insertion in model container [2023-11-06 22:28:19,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:12" (2/3) ... [2023-11-06 22:28:19,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b157f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:19, skipping insertion in model container [2023-11-06 22:28:19,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:19" (3/3) ... [2023-11-06 22:28:19,576 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label04.c [2023-11-06 22:28:19,597 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:28:19,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-06 22:28:19,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:28:19,688 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;@1f1daca3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:28:19,689 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-06 22:28:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 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 22:28:19,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:28:19,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:19,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:19,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:19,718 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:19,718 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2023-11-06 22:28:19,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:19,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36729208] [2023-11-06 22:28:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:19,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:20,018 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 22:28:20,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:20,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36729208] [2023-11-06 22:28:20,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36729208] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:20,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:20,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:28:20,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86953312] [2023-11-06 22:28:20,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:20,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-06 22:28:20,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:20,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-06 22:28:20,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-06 22:28:20,070 INFO L87 Difference]: Start difference. First operand has 874 states, 871 states have (on average 1.9058553386911596) internal successors, (1660), 873 states have internal predecessors, (1660), 0 states have call successors, (0), 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 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:20,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:20,172 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2023-11-06 22:28:20,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-06 22:28:20,175 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-06 22:28:20,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:20,199 INFO L225 Difference]: With dead ends: 1724 [2023-11-06 22:28:20,199 INFO L226 Difference]: Without dead ends: 808 [2023-11-06 22:28:20,209 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 22:28:20,213 INFO L413 NwaCegarLoop]: 1591 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, 1591 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 22:28:20,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:20,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-11-06 22:28:20,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2023-11-06 22:28:20,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8945409429280398) internal successors, (1527), 807 states have internal predecessors, (1527), 0 states have call successors, (0), 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 22:28:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2023-11-06 22:28:20,325 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2023-11-06 22:28:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:20,326 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2023-11-06 22:28:20,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.0) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:20,326 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2023-11-06 22:28:20,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-06 22:28:20,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:20,328 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:20,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:28:20,329 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:20,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:20,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2023-11-06 22:28:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:20,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888963347] [2023-11-06 22:28:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:20,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:20,536 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 22:28:20,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:20,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888963347] [2023-11-06 22:28:20,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888963347] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:20,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:20,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:28:20,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890777911] [2023-11-06 22:28:20,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:20,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:28:20,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:20,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:28:20,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:20,540 INFO L87 Difference]: Start difference. First operand 808 states and 1527 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:20,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:20,703 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2023-11-06 22:28:20,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:28:20,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-11-06 22:28:20,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:20,716 INFO L225 Difference]: With dead ends: 844 [2023-11-06 22:28:20,716 INFO L226 Difference]: Without dead ends: 808 [2023-11-06 22:28:20,720 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 22:28:20,722 INFO L413 NwaCegarLoop]: 1525 mSDtfsCounter, 2 mSDsluCounter, 4554 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6079 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:20,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 6079 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:20,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-11-06 22:28:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2023-11-06 22:28:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 806 states have (on average 1.8746898263027296) internal successors, (1511), 807 states have internal predecessors, (1511), 0 states have call successors, (0), 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 22:28:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2023-11-06 22:28:20,826 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2023-11-06 22:28:20,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:20,826 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2023-11-06 22:28:20,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:20,827 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2023-11-06 22:28:20,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 22:28:20,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:20,831 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] [2023-11-06 22:28:20,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:28:20,832 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:20,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:20,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2023-11-06 22:28:20,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:20,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236674238] [2023-11-06 22:28:20,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:20,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:21,087 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 22:28:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236674238] [2023-11-06 22:28:21,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236674238] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:21,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:21,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:28:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848095179] [2023-11-06 22:28:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:21,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:28:21,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:21,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:28:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:21,091 INFO L87 Difference]: Start difference. First operand 808 states and 1511 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:21,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:21,297 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2023-11-06 22:28:21,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:28:21,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 35 [2023-11-06 22:28:21,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:21,306 INFO L225 Difference]: With dead ends: 1000 [2023-11-06 22:28:21,306 INFO L226 Difference]: Without dead ends: 968 [2023-11-06 22:28:21,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:28:21,316 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 4682 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4682 SdHoareTripleChecker+Valid, 1758 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:21,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4682 Valid, 1758 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:28:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-06 22:28:21,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2023-11-06 22:28:21,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 836 states have (on average 1.8636363636363635) internal successors, (1558), 837 states have internal predecessors, (1558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:21,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2023-11-06 22:28:21,360 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2023-11-06 22:28:21,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:21,361 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2023-11-06 22:28:21,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-06 22:28:21,361 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2023-11-06 22:28:21,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:28:21,364 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:21,364 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] [2023-11-06 22:28:21,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:28:21,364 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:21,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:21,365 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2023-11-06 22:28:21,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:21,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364427424] [2023-11-06 22:28:21,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:21,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:21,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:21,481 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 22:28:21,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:21,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364427424] [2023-11-06 22:28:21,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364427424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:21,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:21,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:21,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741832674] [2023-11-06 22:28:21,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:21,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:21,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:21,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:21,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:21,485 INFO L87 Difference]: Start difference. First operand 838 states and 1558 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 22:28:21,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:21,538 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2023-11-06 22:28:21,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:21,539 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-11-06 22:28:21,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:21,546 INFO L225 Difference]: With dead ends: 951 [2023-11-06 22:28:21,546 INFO L226 Difference]: Without dead ends: 889 [2023-11-06 22:28:21,547 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 22:28:21,548 INFO L413 NwaCegarLoop]: 1507 mSDtfsCounter, 1468 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1468 SdHoareTripleChecker+Valid, 1550 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:21,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1468 Valid, 1550 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:21,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-11-06 22:28:21,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2023-11-06 22:28:21,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8437146092865233) internal successors, (1628), 884 states have internal predecessors, (1628), 0 states have call successors, (0), 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 22:28:21,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2023-11-06 22:28:21,585 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2023-11-06 22:28:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:21,586 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2023-11-06 22:28:21,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 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 22:28:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2023-11-06 22:28:21,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-06 22:28:21,596 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:21,596 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] [2023-11-06 22:28:21,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:28:21,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:21,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:21,597 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2023-11-06 22:28:21,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:21,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833042408] [2023-11-06 22:28:21,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:21,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:21,856 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 22:28:21,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:21,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833042408] [2023-11-06 22:28:21,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833042408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:21,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:21,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:28:21,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029065658] [2023-11-06 22:28:21,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:21,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:28:21,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:28:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:21,860 INFO L87 Difference]: Start difference. First operand 885 states and 1628 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 22:28:21,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:21,973 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2023-11-06 22:28:21,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:28:21,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2023-11-06 22:28:21,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:21,980 INFO L225 Difference]: With dead ends: 996 [2023-11-06 22:28:21,980 INFO L226 Difference]: Without dead ends: 887 [2023-11-06 22:28:21,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-06 22:28:21,982 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 2952 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2952 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:21,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2952 Valid, 1598 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:21,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-11-06 22:28:22,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2023-11-06 22:28:22,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 883 states have (on average 1.8414496036240091) internal successors, (1626), 884 states have internal predecessors, (1626), 0 states have call successors, (0), 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 22:28:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2023-11-06 22:28:22,024 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2023-11-06 22:28:22,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:22,026 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2023-11-06 22:28:22,027 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 22:28:22,028 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2023-11-06 22:28:22,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-06 22:28:22,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:22,031 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] [2023-11-06 22:28:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:28:22,033 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:22,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2023-11-06 22:28:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:22,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175108760] [2023-11-06 22:28:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:22,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:22,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:22,357 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 22:28:22,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:22,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175108760] [2023-11-06 22:28:22,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175108760] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:22,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:22,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 22:28:22,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255615862] [2023-11-06 22:28:22,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:22,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 22:28:22,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:22,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 22:28:22,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-06 22:28:22,360 INFO L87 Difference]: Start difference. First operand 885 states and 1626 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 22:28:22,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:22,567 INFO L93 Difference]: Finished difference Result 961 states and 1742 transitions. [2023-11-06 22:28:22,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:28:22,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 38 [2023-11-06 22:28:22,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:22,574 INFO L225 Difference]: With dead ends: 961 [2023-11-06 22:28:22,574 INFO L226 Difference]: Without dead ends: 959 [2023-11-06 22:28:22,575 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 22:28:22,580 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 98 mSDsluCounter, 9101 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 10639 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 22:28:22,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 10639 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:22,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-11-06 22:28:22,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 891. [2023-11-06 22:28:22,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 891 states, 889 states have (on average 1.8346456692913387) internal successors, (1631), 890 states have internal predecessors, (1631), 0 states have call successors, (0), 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 22:28:22,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2023-11-06 22:28:22,683 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2023-11-06 22:28:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:22,685 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2023-11-06 22:28:22,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 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 22:28:22,690 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2023-11-06 22:28:22,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:28:22,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:22,692 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] [2023-11-06 22:28:22,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:28:22,692 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:22,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:22,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2023-11-06 22:28:22,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:22,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494924508] [2023-11-06 22:28:22,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:22,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:22,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:22,773 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 22:28:22,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:22,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494924508] [2023-11-06 22:28:22,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494924508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:22,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:22,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:22,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138108618] [2023-11-06 22:28:22,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:22,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:22,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:22,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:22,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:22,776 INFO L87 Difference]: Start difference. First operand 891 states and 1631 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 22:28:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:22,829 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2023-11-06 22:28:22,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:22,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2023-11-06 22:28:22,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:22,836 INFO L225 Difference]: With dead ends: 1105 [2023-11-06 22:28:22,837 INFO L226 Difference]: Without dead ends: 990 [2023-11-06 22:28:22,838 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 22:28:22,841 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 1475 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1587 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 22:28:22,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1587 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:22,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-06 22:28:22,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2023-11-06 22:28:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 988 states, 986 states have (on average 1.793103448275862) internal successors, (1768), 987 states have internal predecessors, (1768), 0 states have call successors, (0), 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 22:28:22,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2023-11-06 22:28:22,897 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2023-11-06 22:28:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:22,899 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2023-11-06 22:28:22,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 22:28:22,899 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2023-11-06 22:28:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-06 22:28:22,901 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:22,901 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] [2023-11-06 22:28:22,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:28:22,902 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:22,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:22,902 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2023-11-06 22:28:22,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:22,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073214205] [2023-11-06 22:28:22,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:22,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:22,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:22,979 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 22:28:22,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073214205] [2023-11-06 22:28:22,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073214205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:22,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:22,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:22,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766771046] [2023-11-06 22:28:22,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:22,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:22,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:22,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:22,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:22,984 INFO L87 Difference]: Start difference. First operand 988 states and 1768 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 22:28:23,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:23,062 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2023-11-06 22:28:23,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:23,062 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 39 [2023-11-06 22:28:23,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:23,071 INFO L225 Difference]: With dead ends: 1380 [2023-11-06 22:28:23,071 INFO L226 Difference]: Without dead ends: 1168 [2023-11-06 22:28:23,072 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 22:28:23,074 INFO L413 NwaCegarLoop]: 1538 mSDtfsCounter, 1477 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1477 SdHoareTripleChecker+Valid, 1593 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 22:28:23,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1477 Valid, 1593 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:23,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2023-11-06 22:28:23,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2023-11-06 22:28:23,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 1164 states have (on average 1.7268041237113403) internal successors, (2010), 1165 states have internal predecessors, (2010), 0 states have call successors, (0), 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 22:28:23,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2023-11-06 22:28:23,150 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2023-11-06 22:28:23,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:23,151 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2023-11-06 22:28:23,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 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 22:28:23,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2023-11-06 22:28:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-06 22:28:23,152 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:23,152 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:28:23,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:28:23,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:23,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:23,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2023-11-06 22:28:23,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:23,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447639618] [2023-11-06 22:28:23,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:23,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:23,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:23,201 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 22:28:23,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:23,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447639618] [2023-11-06 22:28:23,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447639618] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:23,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:23,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:23,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933811307] [2023-11-06 22:28:23,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:23,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:23,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:23,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:23,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:23,204 INFO L87 Difference]: Start difference. First operand 1166 states and 2010 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 22:28:23,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:23,305 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2023-11-06 22:28:23,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:23,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2023-11-06 22:28:23,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:23,320 INFO L225 Difference]: With dead ends: 1589 [2023-11-06 22:28:23,320 INFO L226 Difference]: Without dead ends: 1354 [2023-11-06 22:28:23,321 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 22:28:23,324 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 1476 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1594 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 22:28:23,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1594 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:23,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-11-06 22:28:23,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2023-11-06 22:28:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1352 states, 1350 states have (on average 1.677037037037037) internal successors, (2264), 1351 states have internal predecessors, (2264), 0 states have call successors, (0), 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 22:28:23,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2023-11-06 22:28:23,436 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2023-11-06 22:28:23,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:23,437 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2023-11-06 22:28:23,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 22:28:23,437 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2023-11-06 22:28:23,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:28:23,438 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:23,438 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] [2023-11-06 22:28:23,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 22:28:23,439 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:23,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:23,439 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2023-11-06 22:28:23,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:23,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816406574] [2023-11-06 22:28:23,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:23,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-06 22:28:23,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:23,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816406574] [2023-11-06 22:28:23,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816406574] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:23,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:23,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:28:23,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115085280] [2023-11-06 22:28:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:23,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:28:23,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:28:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:23,570 INFO L87 Difference]: Start difference. First operand 1352 states and 2264 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 22:28:23,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:23,987 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2023-11-06 22:28:23,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:28:23,988 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 22:28:23,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:24,005 INFO L225 Difference]: With dead ends: 3208 [2023-11-06 22:28:24,005 INFO L226 Difference]: Without dead ends: 2634 [2023-11-06 22:28:24,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:28:24,008 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 3061 mSDsluCounter, 1596 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:24,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 3147 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:24,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2023-11-06 22:28:24,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2023-11-06 22:28:24,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1924 states, 1922 states have (on average 1.5879292403746097) internal successors, (3052), 1923 states have internal predecessors, (3052), 0 states have call successors, (0), 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 22:28:24,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2023-11-06 22:28:24,240 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2023-11-06 22:28:24,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:24,241 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2023-11-06 22:28:24,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 22:28:24,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2023-11-06 22:28:24,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-06 22:28:24,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:24,243 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] [2023-11-06 22:28:24,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 22:28:24,243 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:24,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:24,244 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2023-11-06 22:28:24,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:24,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999148746] [2023-11-06 22:28:24,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:24,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 22:28:24,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:24,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999148746] [2023-11-06 22:28:24,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999148746] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:24,399 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:24,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:28:24,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432402332] [2023-11-06 22:28:24,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:24,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:28:24,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:24,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:28:24,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:24,402 INFO L87 Difference]: Start difference. First operand 1924 states and 3052 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 22:28:24,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:24,929 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2023-11-06 22:28:24,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:28:24,929 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 22:28:24,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:24,948 INFO L225 Difference]: With dead ends: 3780 [2023-11-06 22:28:24,948 INFO L226 Difference]: Without dead ends: 3206 [2023-11-06 22:28:24,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:28:24,953 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 3049 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:24,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3170 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:28:24,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2023-11-06 22:28:25,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2023-11-06 22:28:25,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 2782 states have (on average 1.518332135154565) internal successors, (4224), 2783 states have internal predecessors, (4224), 0 states have call successors, (0), 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 22:28:25,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2023-11-06 22:28:25,319 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2023-11-06 22:28:25,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:25,319 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2023-11-06 22:28:25,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 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 22:28:25,320 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2023-11-06 22:28:25,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:28:25,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:25,321 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] [2023-11-06 22:28:25,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 22:28:25,321 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:25,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:25,322 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2023-11-06 22:28:25,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:25,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094420468] [2023-11-06 22:28:25,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:25,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:25,428 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:25,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:25,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094420468] [2023-11-06 22:28:25,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094420468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:25,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:25,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:25,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115269246] [2023-11-06 22:28:25,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:25,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:25,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:25,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:25,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:25,430 INFO L87 Difference]: Start difference. First operand 2784 states and 4224 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 22:28:25,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:25,656 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2023-11-06 22:28:25,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:25,656 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 22:28:25,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:25,670 INFO L225 Difference]: With dead ends: 4260 [2023-11-06 22:28:25,670 INFO L226 Difference]: Without dead ends: 2254 [2023-11-06 22:28:25,673 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 22:28:25,674 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 34 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3031 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 22:28:25,674 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3031 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2023-11-06 22:28:25,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2023-11-06 22:28:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2252 states, 2250 states have (on average 1.5537777777777777) internal successors, (3496), 2251 states have internal predecessors, (3496), 0 states have call successors, (0), 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 22:28:25,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2023-11-06 22:28:25,889 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2023-11-06 22:28:25,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:25,889 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2023-11-06 22:28:25,889 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 22:28:25,890 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2023-11-06 22:28:25,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:28:25,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:25,891 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] [2023-11-06 22:28:25,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:28:25,891 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:25,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:25,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2023-11-06 22:28:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:25,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223035918] [2023-11-06 22:28:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:25,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:26,023 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:28:26,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:26,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223035918] [2023-11-06 22:28:26,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223035918] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:26,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:26,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-06 22:28:26,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854355685] [2023-11-06 22:28:26,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:26,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:28:26,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:26,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:28:26,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:28:26,026 INFO L87 Difference]: Start difference. First operand 2252 states and 3496 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:28:26,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:26,416 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2023-11-06 22:28:26,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:28:26,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:28:26,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:26,435 INFO L225 Difference]: With dead ends: 3508 [2023-11-06 22:28:26,435 INFO L226 Difference]: Without dead ends: 3090 [2023-11-06 22:28:26,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:28:26,437 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3049 mSDsluCounter, 1606 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:26,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3155 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:26,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2023-11-06 22:28:26,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2023-11-06 22:28:26,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 2666 states have (on average 1.5273818454613652) internal successors, (4072), 2667 states have internal predecessors, (4072), 0 states have call successors, (0), 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 22:28:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2023-11-06 22:28:26,699 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2023-11-06 22:28:26,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:26,700 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2023-11-06 22:28:26,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 states have internal predecessors, (55), 0 states have call successors, (0), 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 22:28:26,700 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2023-11-06 22:28:26,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:28:26,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:26,701 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] [2023-11-06 22:28:26,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 22:28:26,702 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:26,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:26,703 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2023-11-06 22:28:26,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:26,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376820007] [2023-11-06 22:28:26,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:26,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:26,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:26,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:26,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376820007] [2023-11-06 22:28:26,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376820007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:26,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:26,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:26,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135253973] [2023-11-06 22:28:26,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:26,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:26,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:26,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:26,817 INFO L87 Difference]: Start difference. First operand 2668 states and 4072 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 22:28:26,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:26,967 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2023-11-06 22:28:26,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:26,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 22:28:26,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:26,978 INFO L225 Difference]: With dead ends: 3608 [2023-11-06 22:28:26,978 INFO L226 Difference]: Without dead ends: 1734 [2023-11-06 22:28:26,981 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 22:28:26,982 INFO L413 NwaCegarLoop]: 1528 mSDtfsCounter, 29 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3016 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 22:28:26,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3016 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-11-06 22:28:27,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2023-11-06 22:28:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1732 states, 1730 states have (on average 1.5942196531791908) internal successors, (2758), 1731 states have internal predecessors, (2758), 0 states have call successors, (0), 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 22:28:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2023-11-06 22:28:27,122 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2023-11-06 22:28:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:27,123 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2023-11-06 22:28:27,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 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 22:28:27,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2023-11-06 22:28:27,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-06 22:28:27,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:27,124 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] [2023-11-06 22:28:27,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 22:28:27,125 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:27,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:27,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2023-11-06 22:28:27,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:27,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178228326] [2023-11-06 22:28:27,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:27,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:27,212 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:27,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:27,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178228326] [2023-11-06 22:28:27,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178228326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:27,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 22:28:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271401230] [2023-11-06 22:28:27,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:27,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:27,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:27,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:27,215 INFO L87 Difference]: Start difference. First operand 1732 states and 2758 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 22:28:27,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:27,339 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2023-11-06 22:28:27,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:27,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2023-11-06 22:28:27,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:27,348 INFO L225 Difference]: With dead ends: 2204 [2023-11-06 22:28:27,348 INFO L226 Difference]: Without dead ends: 1266 [2023-11-06 22:28:27,350 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 22:28:27,350 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 26 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3001 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 22:28:27,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3001 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:28:27,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2023-11-06 22:28:27,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2023-11-06 22:28:27,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1262 states have (on average 1.6719492868462758) internal successors, (2110), 1263 states have internal predecessors, (2110), 0 states have call successors, (0), 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 22:28:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2023-11-06 22:28:27,458 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2023-11-06 22:28:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:27,458 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2023-11-06 22:28:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 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 22:28:27,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2023-11-06 22:28:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-06 22:28:27,461 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:27,462 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:28:27,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:28:27,462 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:27,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:27,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2023-11-06 22:28:27,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:27,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826421104] [2023-11-06 22:28:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:27,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:31,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:31,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826421104] [2023-11-06 22:28:31,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826421104] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:31,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674126087] [2023-11-06 22:28:31,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:31,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:31,118 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:31,124 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:31,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:28:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:31,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:28:31,275 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:31,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:28:31,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:31,798 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 22:28:31,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674126087] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:31,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:28:31,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2023-11-06 22:28:31,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988185884] [2023-11-06 22:28:31,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:31,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:28:31,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:31,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:28:31,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:28:31,802 INFO L87 Difference]: Start difference. First operand 1264 states and 2110 transitions. Second operand has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 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 22:28:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:36,803 INFO L93 Difference]: Finished difference Result 3553 states and 5089 transitions. [2023-11-06 22:28:36,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-06 22:28:36,804 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 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 61 [2023-11-06 22:28:36,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:36,830 INFO L225 Difference]: With dead ends: 3553 [2023-11-06 22:28:36,830 INFO L226 Difference]: Without dead ends: 3083 [2023-11-06 22:28:36,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=692, Invalid=3090, Unknown=0, NotChecked=0, Total=3782 [2023-11-06 22:28:36,834 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 17351 mSDsluCounter, 7653 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17351 SdHoareTripleChecker+Valid, 9156 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:36,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17351 Valid, 9156 Invalid, 570 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [38 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 22:28:36,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2023-11-06 22:28:37,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 2925. [2023-11-06 22:28:37,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2925 states, 2923 states have (on average 1.4218268901813205) internal successors, (4156), 2924 states have internal predecessors, (4156), 0 states have call successors, (0), 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 22:28:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2925 states to 2925 states and 4156 transitions. [2023-11-06 22:28:37,338 INFO L78 Accepts]: Start accepts. Automaton has 2925 states and 4156 transitions. Word has length 61 [2023-11-06 22:28:37,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:37,339 INFO L495 AbstractCegarLoop]: Abstraction has 2925 states and 4156 transitions. [2023-11-06 22:28:37,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 8.736842105263158) internal successors, (166), 19 states have internal predecessors, (166), 0 states have call successors, (0), 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 22:28:37,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2925 states and 4156 transitions. [2023-11-06 22:28:37,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-06 22:28:37,343 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:37,343 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] [2023-11-06 22:28:37,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:37,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 22:28:37,550 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:37,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:37,550 INFO L85 PathProgramCache]: Analyzing trace with hash -651882757, now seen corresponding path program 1 times [2023-11-06 22:28:37,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:37,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318737678] [2023-11-06 22:28:37,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:37,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:37,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:37,621 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 22:28:37,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:37,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318737678] [2023-11-06 22:28:37,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318737678] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:28:37,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:28:37,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:28:37,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052897165] [2023-11-06 22:28:37,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:28:37,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:28:37,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:37,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:28:37,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:37,624 INFO L87 Difference]: Start difference. First operand 2925 states and 4156 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 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 22:28:42,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:42,868 INFO L93 Difference]: Finished difference Result 4429 states and 7029 transitions. [2023-11-06 22:28:42,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:28:42,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2023-11-06 22:28:42,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:42,878 INFO L225 Difference]: With dead ends: 4429 [2023-11-06 22:28:42,879 INFO L226 Difference]: Without dead ends: 3676 [2023-11-06 22:28:42,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:28:42,882 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 826 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2277 mSolverCounterSat, 998 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 3275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 998 IncrementalHoareTripleChecker+Valid, 2277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:42,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 149 Invalid, 3275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [998 Valid, 2277 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-11-06 22:28:42,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2023-11-06 22:28:43,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3676. [2023-11-06 22:28:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3674 states have (on average 1.5054436581382689) internal successors, (5531), 3675 states have internal predecessors, (5531), 0 states have call successors, (0), 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 22:28:43,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 5531 transitions. [2023-11-06 22:28:43,411 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 5531 transitions. Word has length 61 [2023-11-06 22:28:43,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:43,412 INFO L495 AbstractCegarLoop]: Abstraction has 3676 states and 5531 transitions. [2023-11-06 22:28:43,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 2 states have internal predecessors, (61), 0 states have call successors, (0), 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 22:28:43,412 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 5531 transitions. [2023-11-06 22:28:43,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-06 22:28:43,414 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:43,414 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] [2023-11-06 22:28:43,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:28:43,414 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:43,415 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:43,415 INFO L85 PathProgramCache]: Analyzing trace with hash 168764099, now seen corresponding path program 1 times [2023-11-06 22:28:43,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:43,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532676373] [2023-11-06 22:28:43,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:43,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:43,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:44,100 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:44,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:44,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532676373] [2023-11-06 22:28:44,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532676373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:44,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204679359] [2023-11-06 22:28:44,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:44,101 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:44,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:44,102 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:44,104 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:28:44,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:44,218 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:28:44,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:45,057 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:45,057 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:46,316 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:46,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204679359] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:46,316 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:28:46,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-11-06 22:28:46,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568784948] [2023-11-06 22:28:46,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:46,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 22:28:46,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 22:28:46,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2023-11-06 22:28:46,320 INFO L87 Difference]: Start difference. First operand 3676 states and 5531 transitions. Second operand has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 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 22:28:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:50,574 INFO L93 Difference]: Finished difference Result 7524 states and 10341 transitions. [2023-11-06 22:28:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-06 22:28:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 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 62 [2023-11-06 22:28:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:50,587 INFO L225 Difference]: With dead ends: 7524 [2023-11-06 22:28:50,588 INFO L226 Difference]: Without dead ends: 5547 [2023-11-06 22:28:50,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 730 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=708, Invalid=2832, Unknown=0, NotChecked=0, Total=3540 [2023-11-06 22:28:50,594 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 21309 mSDsluCounter, 9450 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21309 SdHoareTripleChecker+Valid, 10944 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:50,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21309 Valid, 10944 Invalid, 765 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [48 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 22:28:50,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5547 states. [2023-11-06 22:28:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5547 to 5280. [2023-11-06 22:28:51,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5280 states, 5278 states have (on average 1.4175824175824177) internal successors, (7482), 5279 states have internal predecessors, (7482), 0 states have call successors, (0), 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 22:28:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5280 states to 5280 states and 7482 transitions. [2023-11-06 22:28:51,474 INFO L78 Accepts]: Start accepts. Automaton has 5280 states and 7482 transitions. Word has length 62 [2023-11-06 22:28:51,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:51,474 INFO L495 AbstractCegarLoop]: Abstraction has 5280 states and 7482 transitions. [2023-11-06 22:28:51,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.533333333333333) internal successors, (166), 30 states have internal predecessors, (166), 0 states have call successors, (0), 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 22:28:51,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5280 states and 7482 transitions. [2023-11-06 22:28:51,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-06 22:28:51,476 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:51,477 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-06 22:28:51,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-06 22:28:51,683 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:51,684 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash 225757237, now seen corresponding path program 1 times [2023-11-06 22:28:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:51,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099005929] [2023-11-06 22:28:51,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:51,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:52,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099005929] [2023-11-06 22:28:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099005929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:52,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123461323] [2023-11-06 22:28:52,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:52,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:52,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:52,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:52,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:28:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:52,339 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-06 22:28:52,343 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:28:53,182 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:53,182 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:28:54,229 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:54,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123461323] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:28:54,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:28:54,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-06 22:28:54,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070140398] [2023-11-06 22:28:54,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:28:54,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:28:54,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:28:54,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:28:54,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:28:54,233 INFO L87 Difference]: Start difference. First operand 5280 states and 7482 transitions. Second operand has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 0 states have call successors, (0), 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 22:28:55,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:28:55,961 INFO L93 Difference]: Finished difference Result 8834 states and 11869 transitions. [2023-11-06 22:28:55,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-06 22:28:55,961 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 0 states have call successors, (0), 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 62 [2023-11-06 22:28:55,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:28:55,973 INFO L225 Difference]: With dead ends: 8834 [2023-11-06 22:28:55,973 INFO L226 Difference]: Without dead ends: 5588 [2023-11-06 22:28:55,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=474, Invalid=1418, Unknown=0, NotChecked=0, Total=1892 [2023-11-06 22:28:55,980 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 13604 mSDsluCounter, 4750 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13604 SdHoareTripleChecker+Valid, 6256 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:28:55,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13604 Valid, 6256 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:28:55,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5588 states. [2023-11-06 22:28:56,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5588 to 5340. [2023-11-06 22:28:56,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5340 states, 5338 states have (on average 1.4100786811539903) internal successors, (7527), 5339 states have internal predecessors, (7527), 0 states have call successors, (0), 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 22:28:56,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5340 states to 5340 states and 7527 transitions. [2023-11-06 22:28:56,866 INFO L78 Accepts]: Start accepts. Automaton has 5340 states and 7527 transitions. Word has length 62 [2023-11-06 22:28:56,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:28:56,867 INFO L495 AbstractCegarLoop]: Abstraction has 5340 states and 7527 transitions. [2023-11-06 22:28:56,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.379310344827586) internal successors, (156), 29 states have internal predecessors, (156), 0 states have call successors, (0), 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 22:28:56,868 INFO L276 IsEmpty]: Start isEmpty. Operand 5340 states and 7527 transitions. [2023-11-06 22:28:56,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-06 22:28:56,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:28:56,869 INFO L195 NwaCegarLoop]: trace histogram [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 22:28:56,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:28:57,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:57,075 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:28:57,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:28:57,076 INFO L85 PathProgramCache]: Analyzing trace with hash -753982150, now seen corresponding path program 1 times [2023-11-06 22:28:57,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:28:57,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670362745] [2023-11-06 22:28:57,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:57,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:28:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:59,291 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:28:59,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:28:59,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670362745] [2023-11-06 22:28:59,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670362745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:28:59,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127672727] [2023-11-06 22:28:59,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:28:59,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:28:59,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:28:59,293 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:28:59,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:28:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:28:59,434 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-06 22:28:59,437 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:00,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:02,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127672727] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:02,434 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:02,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 13, 13] total 44 [2023-11-06 22:29:02,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497382296] [2023-11-06 22:29:02,435 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:02,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2023-11-06 22:29:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2023-11-06 22:29:02,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=1746, Unknown=0, NotChecked=0, Total=1892 [2023-11-06 22:29:02,438 INFO L87 Difference]: Start difference. First operand 5340 states and 7527 transitions. Second operand has 44 states, 44 states have (on average 3.7954545454545454) internal successors, (167), 44 states have internal predecessors, (167), 0 states have call successors, (0), 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 22:29:22,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:22,229 INFO L93 Difference]: Finished difference Result 12503 states and 16256 transitions. [2023-11-06 22:29:22,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 116 states. [2023-11-06 22:29:22,229 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 3.7954545454545454) internal successors, (167), 44 states have internal predecessors, (167), 0 states have call successors, (0), 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 63 [2023-11-06 22:29:22,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:22,253 INFO L225 Difference]: With dead ends: 12503 [2023-11-06 22:29:22,253 INFO L226 Difference]: Without dead ends: 10404 [2023-11-06 22:29:22,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7658 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=5001, Invalid=19491, Unknown=0, NotChecked=0, Total=24492 [2023-11-06 22:29:22,267 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 22197 mSDsluCounter, 23687 mSDsCounter, 0 mSdLazyCounter, 1837 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22197 SdHoareTripleChecker+Valid, 25239 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:22,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22197 Valid, 25239 Invalid, 1990 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [153 Valid, 1837 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 22:29:22,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10404 states. [2023-11-06 22:29:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10404 to 5516. [2023-11-06 22:29:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5516 states, 5514 states have (on average 1.4006166122597026) internal successors, (7723), 5515 states have internal predecessors, (7723), 0 states have call successors, (0), 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 22:29:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5516 states to 5516 states and 7723 transitions. [2023-11-06 22:29:23,679 INFO L78 Accepts]: Start accepts. Automaton has 5516 states and 7723 transitions. Word has length 63 [2023-11-06 22:29:23,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:23,679 INFO L495 AbstractCegarLoop]: Abstraction has 5516 states and 7723 transitions. [2023-11-06 22:29:23,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 3.7954545454545454) internal successors, (167), 44 states have internal predecessors, (167), 0 states have call successors, (0), 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 22:29:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 5516 states and 7723 transitions. [2023-11-06 22:29:23,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-06 22:29:23,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:23,681 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] [2023-11-06 22:29:23,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:29:23,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:23,887 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:23,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:23,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1905434029, now seen corresponding path program 1 times [2023-11-06 22:29:23,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:23,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118015542] [2023-11-06 22:29:23,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:23,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:23,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:25,295 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:25,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:25,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118015542] [2023-11-06 22:29:25,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118015542] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:25,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789431270] [2023-11-06 22:29:25,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:25,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:25,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:25,297 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:25,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:29:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:25,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:29:25,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:26,608 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:26,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:28,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789431270] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:28,076 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:28,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 12, 12] total 41 [2023-11-06 22:29:28,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255965381] [2023-11-06 22:29:28,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:28,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-06 22:29:28,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:28,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-06 22:29:28,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1504, Unknown=0, NotChecked=0, Total=1640 [2023-11-06 22:29:28,080 INFO L87 Difference]: Start difference. First operand 5516 states and 7723 transitions. Second operand has 41 states, 41 states have (on average 3.951219512195122) internal successors, (162), 41 states have internal predecessors, (162), 0 states have call successors, (0), 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 22:29:51,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:29:51,222 INFO L93 Difference]: Finished difference Result 15970 states and 20509 transitions. [2023-11-06 22:29:51,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 143 states. [2023-11-06 22:29:51,222 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 3.951219512195122) internal successors, (162), 41 states have internal predecessors, (162), 0 states have call successors, (0), 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 64 [2023-11-06 22:29:51,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:29:51,249 INFO L225 Difference]: With dead ends: 15970 [2023-11-06 22:29:51,249 INFO L226 Difference]: Without dead ends: 13462 [2023-11-06 22:29:51,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10998 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=6352, Invalid=26590, Unknown=0, NotChecked=0, Total=32942 [2023-11-06 22:29:51,266 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 16710 mSDsluCounter, 20698 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16710 SdHoareTripleChecker+Valid, 22243 SdHoareTripleChecker+Invalid, 2042 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 22:29:51,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16710 Valid, 22243 Invalid, 2042 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [124 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 22:29:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13462 states. [2023-11-06 22:29:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13462 to 5175. [2023-11-06 22:29:52,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 5173 states have (on average 1.416392808815001) internal successors, (7327), 5174 states have internal predecessors, (7327), 0 states have call successors, (0), 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 22:29:52,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 7327 transitions. [2023-11-06 22:29:52,741 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 7327 transitions. Word has length 64 [2023-11-06 22:29:52,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:29:52,742 INFO L495 AbstractCegarLoop]: Abstraction has 5175 states and 7327 transitions. [2023-11-06 22:29:52,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 3.951219512195122) internal successors, (162), 41 states have internal predecessors, (162), 0 states have call successors, (0), 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 22:29:52,742 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 7327 transitions. [2023-11-06 22:29:52,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-06 22:29:52,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:29:52,744 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] [2023-11-06 22:29:52,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-06 22:29:52,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-06 22:29:52,950 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:29:52,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:29:52,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1097649072, now seen corresponding path program 1 times [2023-11-06 22:29:52,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:29:52,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697316927] [2023-11-06 22:29:52,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:52,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:29:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:53,754 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:53,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:29:53,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697316927] [2023-11-06 22:29:53,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697316927] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:29:53,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069633032] [2023-11-06 22:29:53,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:29:53,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:29:53,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:29:53,757 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:29:53,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:29:53,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:29:53,926 INFO L262 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-06 22:29:53,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:29:55,219 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:55,220 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:29:56,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:29:56,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069633032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:29:56,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:29:56,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 15] total 37 [2023-11-06 22:29:56,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790591824] [2023-11-06 22:29:56,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:29:56,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-06 22:29:56,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:29:56,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-06 22:29:56,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=1134, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:29:56,243 INFO L87 Difference]: Start difference. First operand 5175 states and 7327 transitions. Second operand has 37 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 37 states have internal predecessors, (169), 0 states have call successors, (0), 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 22:30:00,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:00,116 INFO L93 Difference]: Finished difference Result 6686 states and 9158 transitions. [2023-11-06 22:30:00,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-06 22:30:00,119 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 37 states have internal predecessors, (169), 0 states have call successors, (0), 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 65 [2023-11-06 22:30:00,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:00,128 INFO L225 Difference]: With dead ends: 6686 [2023-11-06 22:30:00,128 INFO L226 Difference]: Without dead ends: 4940 [2023-11-06 22:30:00,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 652 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=750, Invalid=2672, Unknown=0, NotChecked=0, Total=3422 [2023-11-06 22:30:00,132 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 18402 mSDsluCounter, 11975 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18402 SdHoareTripleChecker+Valid, 13470 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:00,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18402 Valid, 13470 Invalid, 516 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-06 22:30:00,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4940 states. [2023-11-06 22:30:01,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4940 to 4489. [2023-11-06 22:30:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4487 states have (on average 1.442389124136394) internal successors, (6472), 4488 states have internal predecessors, (6472), 0 states have call successors, (0), 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 22:30:01,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6472 transitions. [2023-11-06 22:30:01,395 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6472 transitions. Word has length 65 [2023-11-06 22:30:01,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:01,396 INFO L495 AbstractCegarLoop]: Abstraction has 4489 states and 6472 transitions. [2023-11-06 22:30:01,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 37 states have internal predecessors, (169), 0 states have call successors, (0), 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 22:30:01,396 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6472 transitions. [2023-11-06 22:30:01,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-06 22:30:01,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:01,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-06 22:30:01,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:01,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 22:30:01,609 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:01,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:01,609 INFO L85 PathProgramCache]: Analyzing trace with hash -147234275, now seen corresponding path program 1 times [2023-11-06 22:30:01,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:01,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159008574] [2023-11-06 22:30:01,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:01,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 30 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:02,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159008574] [2023-11-06 22:30:02,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159008574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:02,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860581421] [2023-11-06 22:30:02,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:02,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:02,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:02,768 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:02,771 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:30:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:02,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-06 22:30:02,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:04,141 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 24 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:04,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:05,990 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 22 proven. 71 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:05,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860581421] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:05,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:30:05,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11, 11] total 34 [2023-11-06 22:30:05,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666313610] [2023-11-06 22:30:05,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:05,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-06 22:30:05,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:05,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-06 22:30:05,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2023-11-06 22:30:05,994 INFO L87 Difference]: Start difference. First operand 4489 states and 6472 transitions. Second operand has 35 states, 35 states have (on average 8.257142857142858) internal successors, (289), 34 states have internal predecessors, (289), 0 states have call successors, (0), 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 22:30:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:30:25,375 INFO L93 Difference]: Finished difference Result 10701 states and 14051 transitions. [2023-11-06 22:30:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-11-06 22:30:25,376 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 8.257142857142858) internal successors, (289), 34 states have internal predecessors, (289), 0 states have call successors, (0), 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 103 [2023-11-06 22:30:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:30:25,386 INFO L225 Difference]: With dead ends: 10701 [2023-11-06 22:30:25,387 INFO L226 Difference]: Without dead ends: 8021 [2023-11-06 22:30:25,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6402 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=3583, Invalid=17879, Unknown=0, NotChecked=0, Total=21462 [2023-11-06 22:30:25,394 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 25629 mSDsluCounter, 12887 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25629 SdHoareTripleChecker+Valid, 14420 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:30:25,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25629 Valid, 14420 Invalid, 1482 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [113 Valid, 1369 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 22:30:25,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8021 states. [2023-11-06 22:30:28,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8021 to 7739. [2023-11-06 22:30:28,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7739 states, 7737 states have (on average 1.335401318340442) internal successors, (10332), 7738 states have internal predecessors, (10332), 0 states have call successors, (0), 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 22:30:28,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7739 states to 7739 states and 10332 transitions. [2023-11-06 22:30:28,826 INFO L78 Accepts]: Start accepts. Automaton has 7739 states and 10332 transitions. Word has length 103 [2023-11-06 22:30:28,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:30:28,827 INFO L495 AbstractCegarLoop]: Abstraction has 7739 states and 10332 transitions. [2023-11-06 22:30:28,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 8.257142857142858) internal successors, (289), 34 states have internal predecessors, (289), 0 states have call successors, (0), 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 22:30:28,827 INFO L276 IsEmpty]: Start isEmpty. Operand 7739 states and 10332 transitions. [2023-11-06 22:30:28,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 22:30:28,831 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:30:28,831 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:30:28,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:30:29,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 22:30:29,033 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:30:29,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:30:29,033 INFO L85 PathProgramCache]: Analyzing trace with hash 856710688, now seen corresponding path program 1 times [2023-11-06 22:30:29,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:30:29,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419410829] [2023-11-06 22:30:29,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:29,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:30:29,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:30,640 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 57 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2023-11-06 22:30:30,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:30:30,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419410829] [2023-11-06 22:30:30,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419410829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:30:30,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107596336] [2023-11-06 22:30:30,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:30:30,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:30:30,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:30:30,645 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:30:30,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:30:30,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:30:30,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:30:30,782 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:30:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:33,013 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:30:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:30:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107596336] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:30:38,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:30:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 52 [2023-11-06 22:30:38,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240568781] [2023-11-06 22:30:38,021 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:30:38,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2023-11-06 22:30:38,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:30:38,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2023-11-06 22:30:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2422, Unknown=0, NotChecked=0, Total=2652 [2023-11-06 22:30:38,024 INFO L87 Difference]: Start difference. First operand 7739 states and 10332 transitions. Second operand has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 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 22:31:03,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:03,354 INFO L93 Difference]: Finished difference Result 12543 states and 16057 transitions. [2023-11-06 22:31:03,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2023-11-06 22:31:03,355 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 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 104 [2023-11-06 22:31:03,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:03,365 INFO L225 Difference]: With dead ends: 12543 [2023-11-06 22:31:03,365 INFO L226 Difference]: Without dead ends: 8517 [2023-11-06 22:31:03,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4658 ImplicationChecksByTransitivity, 19.7s TimeCoverageRelationStatistics Valid=2601, Invalid=14691, Unknown=0, NotChecked=0, Total=17292 [2023-11-06 22:31:03,374 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 23150 mSDsluCounter, 34938 mSDsCounter, 0 mSdLazyCounter, 1962 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23150 SdHoareTripleChecker+Valid, 36449 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:03,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23150 Valid, 36449 Invalid, 2086 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [124 Valid, 1962 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-06 22:31:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8517 states. [2023-11-06 22:31:07,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8517 to 7675. [2023-11-06 22:31:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7675 states, 7673 states have (on average 1.33689560797602) internal successors, (10258), 7674 states have internal predecessors, (10258), 0 states have call successors, (0), 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 22:31:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7675 states to 7675 states and 10258 transitions. [2023-11-06 22:31:07,713 INFO L78 Accepts]: Start accepts. Automaton has 7675 states and 10258 transitions. Word has length 104 [2023-11-06 22:31:07,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:07,713 INFO L495 AbstractCegarLoop]: Abstraction has 7675 states and 10258 transitions. [2023-11-06 22:31:07,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 5.173076923076923) internal successors, (269), 52 states have internal predecessors, (269), 0 states have call successors, (0), 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 22:31:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7675 states and 10258 transitions. [2023-11-06 22:31:07,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-06 22:31:07,717 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:07,717 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 22:31:07,727 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:31:07,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-06 22:31:07,927 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 22:31:07,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:31:07,927 INFO L85 PathProgramCache]: Analyzing trace with hash 15634770, now seen corresponding path program 1 times [2023-11-06 22:31:07,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:31:07,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854184120] [2023-11-06 22:31:07,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:07,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:31:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:09,147 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:09,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:31:09,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854184120] [2023-11-06 22:31:09,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854184120] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:31:09,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123662280] [2023-11-06 22:31:09,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:31:09,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:31:09,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:31:09,152 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:31:09,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:31:09,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:31:09,333 INFO L262 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-06 22:31:09,336 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:31:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:11,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:31:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 24 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:31:18,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123662280] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:31:18,014 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:31:18,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 17] total 43 [2023-11-06 22:31:18,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300350309] [2023-11-06 22:31:18,014 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:31:18,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2023-11-06 22:31:18,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:31:18,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2023-11-06 22:31:18,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=1596, Unknown=0, NotChecked=0, Total=1806 [2023-11-06 22:31:18,019 INFO L87 Difference]: Start difference. First operand 7675 states and 10258 transitions. Second operand has 43 states, 43 states have (on average 6.744186046511628) internal successors, (290), 43 states have internal predecessors, (290), 0 states have call successors, (0), 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 22:31:44,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:31:44,105 INFO L93 Difference]: Finished difference Result 17449 states and 22162 transitions. [2023-11-06 22:31:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2023-11-06 22:31:44,106 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 6.744186046511628) internal successors, (290), 43 states have internal predecessors, (290), 0 states have call successors, (0), 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 104 [2023-11-06 22:31:44,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:31:44,116 INFO L225 Difference]: With dead ends: 17449 [2023-11-06 22:31:44,117 INFO L226 Difference]: Without dead ends: 11855 [2023-11-06 22:31:44,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8088 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=3857, Invalid=21903, Unknown=0, NotChecked=0, Total=25760 [2023-11-06 22:31:44,123 INFO L413 NwaCegarLoop]: 1603 mSDtfsCounter, 25684 mSDsluCounter, 15469 mSDsCounter, 0 mSdLazyCounter, 3024 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25684 SdHoareTripleChecker+Valid, 17072 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 3024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2023-11-06 22:31:44,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25684 Valid, 17072 Invalid, 3083 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [59 Valid, 3024 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2023-11-06 22:31:44,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11855 states. [2023-11-06 22:31:46,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11855 to 4537. [2023-11-06 22:31:46,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4537 states, 4535 states have (on average 1.4222712238147739) internal successors, (6450), 4536 states have internal predecessors, (6450), 0 states have call successors, (0), 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 22:31:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4537 states to 4537 states and 6450 transitions. [2023-11-06 22:31:46,705 INFO L78 Accepts]: Start accepts. Automaton has 4537 states and 6450 transitions. Word has length 104 [2023-11-06 22:31:46,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:31:46,705 INFO L495 AbstractCegarLoop]: Abstraction has 4537 states and 6450 transitions. [2023-11-06 22:31:46,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 6.744186046511628) internal successors, (290), 43 states have internal predecessors, (290), 0 states have call successors, (0), 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 22:31:46,706 INFO L276 IsEmpty]: Start isEmpty. Operand 4537 states and 6450 transitions. [2023-11-06 22:31:46,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-06 22:31:46,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:31:46,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:31:46,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1cfe10ae-b46b-42ca-b926-fa453e47f17e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0