./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cf1a7837 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_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 00613173bfd5be4a2d23c5cbdde33ad3a2bf8c778a3dcd5e833889c0a53ce55c --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:16:09,901 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:16:10,053 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-12 02:16:10,064 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:16:10,066 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:16:10,113 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:16:10,115 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:16:10,116 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:16:10,117 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:16:10,123 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:16:10,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:16:10,126 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:16:10,126 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:16:10,129 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:16:10,129 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:16:10,130 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:16:10,131 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:16:10,131 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:16:10,132 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:16:10,133 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:16:10,133 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:16:10,134 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:16:10,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:16:10,135 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:16:10,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:16:10,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:16:10,138 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:16:10,138 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:16:10,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:10,139 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:16:10,141 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:16:10,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:16:10,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:16:10,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:16:10,143 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:16:10,143 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:16:10,144 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:16:10,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:16:10,144 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:16:10,145 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_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 00613173bfd5be4a2d23c5cbdde33ad3a2bf8c778a3dcd5e833889c0a53ce55c [2023-11-12 02:16:10,521 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:16:10,556 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:16:10,559 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:16:10,561 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:16:10,562 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:16:10,564 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-12 02:16:14,042 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:16:14,640 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:16:14,641 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-12 02:16:14,689 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/data/625bc0460/a1615263ad054b569efe415c01e1b32b/FLAGe184903a9 [2023-11-12 02:16:14,717 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/data/625bc0460/a1615263ad054b569efe415c01e1b32b [2023-11-12 02:16:14,726 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:16:14,729 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:16:14,734 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:14,734 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:16:14,741 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:16:14,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:14" (1/1) ... [2023-11-12 02:16:14,744 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@455806 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:14, skipping insertion in model container [2023-11-12 02:16:14,744 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:14" (1/1) ... [2023-11-12 02:16:14,969 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:16:15,529 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_8064ba4a-87d3-4595-83c6-5547912adbe2/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c[6450,6463] [2023-11-12 02:16:15,629 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_8064ba4a-87d3-4595-83c6-5547912adbe2/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c[14198,14211] [2023-11-12 02:16:16,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:16,874 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:16:16,931 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_8064ba4a-87d3-4595-83c6-5547912adbe2/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c[6450,6463] [2023-11-12 02:16:16,943 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_8064ba4a-87d3-4595-83c6-5547912adbe2/sv-benchmarks/c/combinations/pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c[14198,14211] [2023-11-12 02:16:17,568 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:17,601 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:16:17,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17 WrapperNode [2023-11-12 02:16:17,603 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:17,604 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:17,604 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:16:17,604 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:16:17,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:17,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,068 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4979 [2023-11-12 02:16:18,068 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:18,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:16:18,069 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:16:18,069 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:16:18,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,079 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,138 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,138 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,379 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,432 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,471 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,625 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:16:18,639 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:16:18,639 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:16:18,640 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:16:18,641 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (1/1) ... [2023-11-12 02:16:18,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:18,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:18,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:16:18,700 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:16:18,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:16:18,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:16:18,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:16:18,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:16:18,970 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:16:18,973 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:16:25,210 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:16:25,234 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:16:25,234 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:16:25,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:25 BoogieIcfgContainer [2023-11-12 02:16:25,240 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:16:25,243 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:16:25,243 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:16:25,247 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:16:25,247 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:16:14" (1/3) ... [2023-11-12 02:16:25,248 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9e065a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:25, skipping insertion in model container [2023-11-12 02:16:25,249 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:17" (2/3) ... [2023-11-12 02:16:25,251 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9e065a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:25, skipping insertion in model container [2023-11-12 02:16:25,251 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:25" (3/3) ... [2023-11-12 02:16:25,253 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals+Problem12_label09.c [2023-11-12 02:16:25,273 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:16:25,274 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-12 02:16:25,366 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:16:25,374 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e6b10f3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:16:25,374 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-12 02:16:25,384 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) [2023-11-12 02:16:25,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 02:16:25,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:25,393 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] [2023-11-12 02:16:25,394 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:25,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -934405548, now seen corresponding path program 1 times [2023-11-12 02:16:25,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:25,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209321491] [2023-11-12 02:16:25,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:25,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:25,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:25,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:25,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209321491] [2023-11-12 02:16:25,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209321491] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:25,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:25,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:16:25,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403748241] [2023-11-12 02:16:25,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:25,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-12 02:16:25,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:25,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-12 02:16:25,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-12 02:16:25,689 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) [2023-11-12 02:16:25,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:25,805 INFO L93 Difference]: Finished difference Result 1724 states and 3278 transitions. [2023-11-12 02:16:25,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-12 02:16:25,807 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 [2023-11-12 02:16:25,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:25,831 INFO L225 Difference]: With dead ends: 1724 [2023-11-12 02:16:25,831 INFO L226 Difference]: Without dead ends: 808 [2023-11-12 02:16:25,839 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 [2023-11-12 02:16:25,843 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 [2023-11-12 02:16:25,844 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] [2023-11-12 02:16:25,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-11-12 02:16:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2023-11-12 02:16:25,938 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) [2023-11-12 02:16:25,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1527 transitions. [2023-11-12 02:16:25,944 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1527 transitions. Word has length 20 [2023-11-12 02:16:25,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:25,944 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1527 transitions. [2023-11-12 02:16:25,944 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) [2023-11-12 02:16:25,945 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1527 transitions. [2023-11-12 02:16:25,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-12 02:16:25,947 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:25,947 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] [2023-11-12 02:16:25,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:16:25,947 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:25,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:25,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1945522798, now seen corresponding path program 1 times [2023-11-12 02:16:25,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:25,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019495105] [2023-11-12 02:16:25,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:25,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:26,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:26,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:26,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019495105] [2023-11-12 02:16:26,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019495105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:26,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:26,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:26,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532241871] [2023-11-12 02:16:26,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:26,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:26,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:26,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:26,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:26,271 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) [2023-11-12 02:16:26,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:26,436 INFO L93 Difference]: Finished difference Result 844 states and 1581 transitions. [2023-11-12 02:16:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:26,437 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 [2023-11-12 02:16:26,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:26,443 INFO L225 Difference]: With dead ends: 844 [2023-11-12 02:16:26,444 INFO L226 Difference]: Without dead ends: 808 [2023-11-12 02:16:26,447 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 [2023-11-12 02:16:26,449 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 [2023-11-12 02:16:26,449 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] [2023-11-12 02:16:26,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2023-11-12 02:16:26,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 808. [2023-11-12 02:16:26,522 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) [2023-11-12 02:16:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1511 transitions. [2023-11-12 02:16:26,526 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1511 transitions. Word has length 20 [2023-11-12 02:16:26,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:26,526 INFO L495 AbstractCegarLoop]: Abstraction has 808 states and 1511 transitions. [2023-11-12 02:16:26,526 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) [2023-11-12 02:16:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1511 transitions. [2023-11-12 02:16:26,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-12 02:16:26,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:26,536 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] [2023-11-12 02:16:26,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:16:26,537 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:26,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:26,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1226597962, now seen corresponding path program 1 times [2023-11-12 02:16:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:26,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514501308] [2023-11-12 02:16:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:26,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:26,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:26,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514501308] [2023-11-12 02:16:26,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514501308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:26,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:26,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:26,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908484255] [2023-11-12 02:16:26,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:26,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:26,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:26,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:26,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:26,695 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) [2023-11-12 02:16:26,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:26,887 INFO L93 Difference]: Finished difference Result 1000 states and 1811 transitions. [2023-11-12 02:16:26,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:16:26,887 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 [2023-11-12 02:16:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:26,898 INFO L225 Difference]: With dead ends: 1000 [2023-11-12 02:16:26,899 INFO L226 Difference]: Without dead ends: 968 [2023-11-12 02:16:26,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:16:26,905 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 [2023-11-12 02:16:26,905 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] [2023-11-12 02:16:26,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-12 02:16:26,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 838. [2023-11-12 02:16:26,929 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) [2023-11-12 02:16:26,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1558 transitions. [2023-11-12 02:16:26,934 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1558 transitions. Word has length 35 [2023-11-12 02:16:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:26,934 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1558 transitions. [2023-11-12 02:16:26,935 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) [2023-11-12 02:16:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1558 transitions. [2023-11-12 02:16:26,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-12 02:16:26,937 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:26,937 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] [2023-11-12 02:16:26,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:16:26,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:26,938 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:26,939 INFO L85 PathProgramCache]: Analyzing trace with hash 523901274, now seen corresponding path program 1 times [2023-11-12 02:16:26,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:26,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066722773] [2023-11-12 02:16:26,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:26,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:27,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:27,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:27,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066722773] [2023-11-12 02:16:27,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066722773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:27,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:27,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:27,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014845361] [2023-11-12 02:16:27,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:27,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:27,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:27,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:27,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:27,041 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) [2023-11-12 02:16:27,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:27,085 INFO L93 Difference]: Finished difference Result 951 states and 1733 transitions. [2023-11-12 02:16:27,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:27,086 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 [2023-11-12 02:16:27,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:27,092 INFO L225 Difference]: With dead ends: 951 [2023-11-12 02:16:27,093 INFO L226 Difference]: Without dead ends: 889 [2023-11-12 02:16:27,093 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 [2023-11-12 02:16:27,095 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 [2023-11-12 02:16:27,095 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] [2023-11-12 02:16:27,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2023-11-12 02:16:27,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 885. [2023-11-12 02:16:27,118 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) [2023-11-12 02:16:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1628 transitions. [2023-11-12 02:16:27,123 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1628 transitions. Word has length 37 [2023-11-12 02:16:27,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:27,123 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1628 transitions. [2023-11-12 02:16:27,124 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) [2023-11-12 02:16:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1628 transitions. [2023-11-12 02:16:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-12 02:16:27,126 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:27,126 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:27,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:16:27,127 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:27,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash 590394786, now seen corresponding path program 1 times [2023-11-12 02:16:27,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:27,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684727237] [2023-11-12 02:16:27,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:27,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:27,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:27,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:27,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684727237] [2023-11-12 02:16:27,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684727237] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:27,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:27,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:27,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343641328] [2023-11-12 02:16:27,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:27,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:27,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:27,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:27,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:27,454 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) [2023-11-12 02:16:27,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:27,552 INFO L93 Difference]: Finished difference Result 996 states and 1796 transitions. [2023-11-12 02:16:27,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:27,553 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 [2023-11-12 02:16:27,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:27,559 INFO L225 Difference]: With dead ends: 996 [2023-11-12 02:16:27,559 INFO L226 Difference]: Without dead ends: 887 [2023-11-12 02:16:27,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:16:27,561 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 4426 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4426 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:27,562 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4426 Valid, 1598 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2023-11-12 02:16:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 885. [2023-11-12 02:16:27,584 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) [2023-11-12 02:16:27,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1626 transitions. [2023-11-12 02:16:27,589 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1626 transitions. Word has length 37 [2023-11-12 02:16:27,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:27,590 INFO L495 AbstractCegarLoop]: Abstraction has 885 states and 1626 transitions. [2023-11-12 02:16:27,590 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) [2023-11-12 02:16:27,590 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1626 transitions. [2023-11-12 02:16:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-12 02:16:27,592 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:27,592 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] [2023-11-12 02:16:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:16:27,593 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:27,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:27,593 INFO L85 PathProgramCache]: Analyzing trace with hash 707645968, now seen corresponding path program 1 times [2023-11-12 02:16:27,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:27,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958348622] [2023-11-12 02:16:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:27,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:27,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958348622] [2023-11-12 02:16:27,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958348622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:27,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:27,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-12 02:16:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255042711] [2023-11-12 02:16:27,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:27,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:16:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:16:27,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:16:27,848 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) [2023-11-12 02:16:28,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:28,005 INFO L93 Difference]: Finished difference Result 961 states and 1742 transitions. [2023-11-12 02:16:28,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:16:28,005 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 [2023-11-12 02:16:28,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:28,012 INFO L225 Difference]: With dead ends: 961 [2023-11-12 02:16:28,012 INFO L226 Difference]: Without dead ends: 959 [2023-11-12 02:16:28,013 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 [2023-11-12 02:16:28,014 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 [2023-11-12 02:16:28,015 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] [2023-11-12 02:16:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2023-11-12 02:16:28,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 891. [2023-11-12 02:16:28,037 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) [2023-11-12 02:16:28,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 891 states to 891 states and 1631 transitions. [2023-11-12 02:16:28,042 INFO L78 Accepts]: Start accepts. Automaton has 891 states and 1631 transitions. Word has length 38 [2023-11-12 02:16:28,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:28,043 INFO L495 AbstractCegarLoop]: Abstraction has 891 states and 1631 transitions. [2023-11-12 02:16:28,043 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) [2023-11-12 02:16:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 891 states and 1631 transitions. [2023-11-12 02:16:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:16:28,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:28,045 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] [2023-11-12 02:16:28,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:16:28,046 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:28,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:28,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1903217474, now seen corresponding path program 1 times [2023-11-12 02:16:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:28,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816891112] [2023-11-12 02:16:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:28,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:28,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:28,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816891112] [2023-11-12 02:16:28,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816891112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:28,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:28,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:28,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189766369] [2023-11-12 02:16:28,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:28,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:28,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:28,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:28,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:28,153 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) [2023-11-12 02:16:28,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:28,190 INFO L93 Difference]: Finished difference Result 1105 states and 1943 transitions. [2023-11-12 02:16:28,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:28,191 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 [2023-11-12 02:16:28,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:28,197 INFO L225 Difference]: With dead ends: 1105 [2023-11-12 02:16:28,197 INFO L226 Difference]: Without dead ends: 990 [2023-11-12 02:16:28,198 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 [2023-11-12 02:16:28,199 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 [2023-11-12 02:16:28,200 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] [2023-11-12 02:16:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2023-11-12 02:16:28,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 988. [2023-11-12 02:16:28,225 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) [2023-11-12 02:16:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1768 transitions. [2023-11-12 02:16:28,230 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1768 transitions. Word has length 39 [2023-11-12 02:16:28,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:28,232 INFO L495 AbstractCegarLoop]: Abstraction has 988 states and 1768 transitions. [2023-11-12 02:16:28,233 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) [2023-11-12 02:16:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1768 transitions. [2023-11-12 02:16:28,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-12 02:16:28,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:28,237 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] [2023-11-12 02:16:28,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:16:28,237 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:28,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:28,238 INFO L85 PathProgramCache]: Analyzing trace with hash 122284610, now seen corresponding path program 1 times [2023-11-12 02:16:28,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:28,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242051836] [2023-11-12 02:16:28,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:28,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:28,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:28,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:28,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242051836] [2023-11-12 02:16:28,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242051836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:28,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:28,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687321317] [2023-11-12 02:16:28,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:28,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:28,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:28,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:28,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:28,309 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) [2023-11-12 02:16:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:28,349 INFO L93 Difference]: Finished difference Result 1380 states and 2326 transitions. [2023-11-12 02:16:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:28,349 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 [2023-11-12 02:16:28,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:28,357 INFO L225 Difference]: With dead ends: 1380 [2023-11-12 02:16:28,357 INFO L226 Difference]: Without dead ends: 1168 [2023-11-12 02:16:28,358 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 [2023-11-12 02:16:28,362 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 [2023-11-12 02:16:28,366 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] [2023-11-12 02:16:28,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2023-11-12 02:16:28,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1166. [2023-11-12 02:16:28,400 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) [2023-11-12 02:16:28,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2010 transitions. [2023-11-12 02:16:28,406 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2010 transitions. Word has length 39 [2023-11-12 02:16:28,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:28,406 INFO L495 AbstractCegarLoop]: Abstraction has 1166 states and 2010 transitions. [2023-11-12 02:16:28,407 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) [2023-11-12 02:16:28,407 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2010 transitions. [2023-11-12 02:16:28,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-12 02:16:28,408 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:28,408 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:16:28,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:16:28,408 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:28,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1688735299, now seen corresponding path program 1 times [2023-11-12 02:16:28,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:28,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469419383] [2023-11-12 02:16:28,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:28,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:28,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:28,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469419383] [2023-11-12 02:16:28,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469419383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:28,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:28,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:28,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928330465] [2023-11-12 02:16:28,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:28,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:28,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:28,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:28,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:28,458 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) [2023-11-12 02:16:28,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:28,502 INFO L93 Difference]: Finished difference Result 1589 states and 2616 transitions. [2023-11-12 02:16:28,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:28,503 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 [2023-11-12 02:16:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:28,511 INFO L225 Difference]: With dead ends: 1589 [2023-11-12 02:16:28,512 INFO L226 Difference]: Without dead ends: 1354 [2023-11-12 02:16:28,513 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 [2023-11-12 02:16:28,513 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 [2023-11-12 02:16:28,514 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] [2023-11-12 02:16:28,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1354 states. [2023-11-12 02:16:28,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1354 to 1352. [2023-11-12 02:16:28,552 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) [2023-11-12 02:16:28,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1352 states to 1352 states and 2264 transitions. [2023-11-12 02:16:28,564 INFO L78 Accepts]: Start accepts. Automaton has 1352 states and 2264 transitions. Word has length 41 [2023-11-12 02:16:28,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:28,565 INFO L495 AbstractCegarLoop]: Abstraction has 1352 states and 2264 transitions. [2023-11-12 02:16:28,565 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) [2023-11-12 02:16:28,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1352 states and 2264 transitions. [2023-11-12 02:16:28,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 02:16:28,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:28,567 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] [2023-11-12 02:16:28,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:16:28,567 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:28,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:28,568 INFO L85 PathProgramCache]: Analyzing trace with hash 923003988, now seen corresponding path program 1 times [2023-11-12 02:16:28,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:28,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688810307] [2023-11-12 02:16:28,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:28,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:28,712 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:16:28,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:28,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688810307] [2023-11-12 02:16:28,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688810307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:28,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:28,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:28,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783275882] [2023-11-12 02:16:28,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:28,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:28,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:28,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:28,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:28,716 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) [2023-11-12 02:16:28,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:28,873 INFO L93 Difference]: Finished difference Result 3208 states and 4844 transitions. [2023-11-12 02:16:28,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:28,874 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 [2023-11-12 02:16:28,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:28,888 INFO L225 Difference]: With dead ends: 3208 [2023-11-12 02:16:28,889 INFO L226 Difference]: Without dead ends: 2634 [2023-11-12 02:16:28,890 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 [2023-11-12 02:16:28,891 INFO L413 NwaCegarLoop]: 1551 mSDtfsCounter, 3057 mSDsluCounter, 1604 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3057 SdHoareTripleChecker+Valid, 3155 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:28,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3057 Valid, 3155 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:28,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2023-11-12 02:16:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 1924. [2023-11-12 02:16:28,968 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) [2023-11-12 02:16:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1924 states to 1924 states and 3052 transitions. [2023-11-12 02:16:28,976 INFO L78 Accepts]: Start accepts. Automaton has 1924 states and 3052 transitions. Word has length 54 [2023-11-12 02:16:28,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:28,978 INFO L495 AbstractCegarLoop]: Abstraction has 1924 states and 3052 transitions. [2023-11-12 02:16:28,978 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) [2023-11-12 02:16:28,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1924 states and 3052 transitions. [2023-11-12 02:16:28,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-12 02:16:28,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:28,980 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] [2023-11-12 02:16:28,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:16:28,980 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:28,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:28,981 INFO L85 PathProgramCache]: Analyzing trace with hash -857928876, now seen corresponding path program 1 times [2023-11-12 02:16:28,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:28,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092665725] [2023-11-12 02:16:28,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:28,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:29,124 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-12 02:16:29,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:29,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092665725] [2023-11-12 02:16:29,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092665725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:29,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:29,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:29,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62552881] [2023-11-12 02:16:29,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:29,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:29,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:29,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:29,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:29,127 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) [2023-11-12 02:16:29,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:29,347 INFO L93 Difference]: Finished difference Result 3780 states and 5632 transitions. [2023-11-12 02:16:29,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:29,347 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 [2023-11-12 02:16:29,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:29,368 INFO L225 Difference]: With dead ends: 3780 [2023-11-12 02:16:29,368 INFO L226 Difference]: Without dead ends: 3206 [2023-11-12 02:16:29,373 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 [2023-11-12 02:16:29,374 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 3053 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3053 SdHoareTripleChecker+Valid, 3159 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:29,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3053 Valid, 3159 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:29,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3206 states. [2023-11-12 02:16:29,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3206 to 2784. [2023-11-12 02:16:29,520 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) [2023-11-12 02:16:29,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4224 transitions. [2023-11-12 02:16:29,537 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4224 transitions. Word has length 54 [2023-11-12 02:16:29,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:29,537 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 4224 transitions. [2023-11-12 02:16:29,537 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) [2023-11-12 02:16:29,538 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4224 transitions. [2023-11-12 02:16:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-12 02:16:29,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:29,540 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] [2023-11-12 02:16:29,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:16:29,540 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:29,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:29,541 INFO L85 PathProgramCache]: Analyzing trace with hash 894361900, now seen corresponding path program 1 times [2023-11-12 02:16:29,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:29,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402045043] [2023-11-12 02:16:29,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:29,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:29,687 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:29,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:29,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402045043] [2023-11-12 02:16:29,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402045043] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:29,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:29,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:29,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273765942] [2023-11-12 02:16:29,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:29,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:29,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:29,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:29,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:29,691 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) [2023-11-12 02:16:29,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:29,795 INFO L93 Difference]: Finished difference Result 4260 states and 6287 transitions. [2023-11-12 02:16:29,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:29,796 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 [2023-11-12 02:16:29,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:29,809 INFO L225 Difference]: With dead ends: 4260 [2023-11-12 02:16:29,810 INFO L226 Difference]: Without dead ends: 2254 [2023-11-12 02:16:29,813 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 [2023-11-12 02:16:29,813 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 [2023-11-12 02:16:29,815 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] [2023-11-12 02:16:29,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2254 states. [2023-11-12 02:16:29,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2254 to 2252. [2023-11-12 02:16:29,900 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) [2023-11-12 02:16:29,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2252 states to 2252 states and 3496 transitions. [2023-11-12 02:16:29,910 INFO L78 Accepts]: Start accepts. Automaton has 2252 states and 3496 transitions. Word has length 56 [2023-11-12 02:16:29,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:29,911 INFO L495 AbstractCegarLoop]: Abstraction has 2252 states and 3496 transitions. [2023-11-12 02:16:29,911 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) [2023-11-12 02:16:29,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2252 states and 3496 transitions. [2023-11-12 02:16:29,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-12 02:16:29,912 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:29,912 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] [2023-11-12 02:16:29,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:16:29,913 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:29,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash 1218909775, now seen corresponding path program 1 times [2023-11-12 02:16:29,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:29,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461068788] [2023-11-12 02:16:29,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:29,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:30,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:16:30,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:30,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461068788] [2023-11-12 02:16:30,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461068788] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:30,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:30,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:16:30,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837009941] [2023-11-12 02:16:30,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:30,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:16:30,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:30,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:16:30,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:16:30,044 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) [2023-11-12 02:16:30,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:30,208 INFO L93 Difference]: Finished difference Result 3508 states and 5252 transitions. [2023-11-12 02:16:30,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:16:30,209 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 [2023-11-12 02:16:30,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:30,226 INFO L225 Difference]: With dead ends: 3508 [2023-11-12 02:16:30,227 INFO L226 Difference]: Without dead ends: 3090 [2023-11-12 02:16:30,229 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 [2023-11-12 02:16:30,229 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 3051 mSDsluCounter, 1598 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3147 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:30,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3147 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:16:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3090 states. [2023-11-12 02:16:30,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3090 to 2668. [2023-11-12 02:16:30,337 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) [2023-11-12 02:16:30,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4072 transitions. [2023-11-12 02:16:30,349 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4072 transitions. Word has length 56 [2023-11-12 02:16:30,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:30,350 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4072 transitions. [2023-11-12 02:16:30,350 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) [2023-11-12 02:16:30,350 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4072 transitions. [2023-11-12 02:16:30,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-12 02:16:30,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:30,352 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] [2023-11-12 02:16:30,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:16:30,352 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:30,353 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:30,353 INFO L85 PathProgramCache]: Analyzing trace with hash -877348108, now seen corresponding path program 1 times [2023-11-12 02:16:30,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:30,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579750464] [2023-11-12 02:16:30,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:30,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:30,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:30,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579750464] [2023-11-12 02:16:30,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579750464] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:30,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:30,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:30,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734983196] [2023-11-12 02:16:30,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:30,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:30,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:30,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:30,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:30,521 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) [2023-11-12 02:16:30,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:30,590 INFO L93 Difference]: Finished difference Result 3608 states and 5370 transitions. [2023-11-12 02:16:30,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:30,591 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 [2023-11-12 02:16:30,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:30,601 INFO L225 Difference]: With dead ends: 3608 [2023-11-12 02:16:30,601 INFO L226 Difference]: Without dead ends: 1734 [2023-11-12 02:16:30,604 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 [2023-11-12 02:16:30,605 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 [2023-11-12 02:16:30,605 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] [2023-11-12 02:16:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1734 states. [2023-11-12 02:16:30,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1734 to 1732. [2023-11-12 02:16:30,662 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) [2023-11-12 02:16:30,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1732 states to 1732 states and 2758 transitions. [2023-11-12 02:16:30,670 INFO L78 Accepts]: Start accepts. Automaton has 1732 states and 2758 transitions. Word has length 57 [2023-11-12 02:16:30,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:30,670 INFO L495 AbstractCegarLoop]: Abstraction has 1732 states and 2758 transitions. [2023-11-12 02:16:30,670 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) [2023-11-12 02:16:30,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1732 states and 2758 transitions. [2023-11-12 02:16:30,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-12 02:16:30,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:30,672 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] [2023-11-12 02:16:30,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:16:30,672 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:30,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:30,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1226511174, now seen corresponding path program 1 times [2023-11-12 02:16:30,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:30,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095277378] [2023-11-12 02:16:30,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:30,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:30,768 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:30,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:30,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095277378] [2023-11-12 02:16:30,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095277378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:16:30,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:16:30,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:16:30,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148413066] [2023-11-12 02:16:30,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:16:30,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:16:30,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:30,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:16:30,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:16:30,771 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) [2023-11-12 02:16:30,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:30,821 INFO L93 Difference]: Finished difference Result 2204 states and 3399 transitions. [2023-11-12 02:16:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:16:30,821 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 [2023-11-12 02:16:30,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:30,829 INFO L225 Difference]: With dead ends: 2204 [2023-11-12 02:16:30,829 INFO L226 Difference]: Without dead ends: 1266 [2023-11-12 02:16:30,831 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 [2023-11-12 02:16:30,831 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 [2023-11-12 02:16:30,832 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] [2023-11-12 02:16:30,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2023-11-12 02:16:30,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1264. [2023-11-12 02:16:30,873 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) [2023-11-12 02:16:30,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 2110 transitions. [2023-11-12 02:16:30,878 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 2110 transitions. Word has length 59 [2023-11-12 02:16:30,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:30,879 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 2110 transitions. [2023-11-12 02:16:30,879 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) [2023-11-12 02:16:30,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 2110 transitions. [2023-11-12 02:16:30,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-12 02:16:30,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:30,880 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] [2023-11-12 02:16:30,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:16:30,881 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:30,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:30,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1826022888, now seen corresponding path program 1 times [2023-11-12 02:16:30,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:30,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609930562] [2023-11-12 02:16:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:30,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:34,999 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:34,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:35,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609930562] [2023-11-12 02:16:35,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609930562] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:16:35,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671110453] [2023-11-12 02:16:35,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:35,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:16:35,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:35,010 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:16:35,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:16:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:35,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:16:35,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:16:35,460 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:16:35,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:16:35,682 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:16:35,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671110453] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:16:35,682 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:16:35,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 6, 4] total 19 [2023-11-12 02:16:35,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113151768] [2023-11-12 02:16:35,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:16:35,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 02:16:35,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:35,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 02:16:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2023-11-12 02:16:35,685 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) [2023-11-12 02:16:40,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:40,564 INFO L93 Difference]: Finished difference Result 3643 states and 5194 transitions. [2023-11-12 02:16:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-11-12 02:16:40,565 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 [2023-11-12 02:16:40,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:40,577 INFO L225 Difference]: With dead ends: 3643 [2023-11-12 02:16:40,577 INFO L226 Difference]: Without dead ends: 3173 [2023-11-12 02:16:40,580 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=692, Invalid=3090, Unknown=0, NotChecked=0, Total=3782 [2023-11-12 02:16:40,581 INFO L413 NwaCegarLoop]: 1503 mSDtfsCounter, 14367 mSDsluCounter, 7682 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14367 SdHoareTripleChecker+Valid, 9185 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:40,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14367 Valid, 9185 Invalid, 612 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [36 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:16:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2023-11-12 02:16:40,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 2985. [2023-11-12 02:16:40,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2983 states have (on average 1.41837076768354) internal successors, (4231), 2984 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:40,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 4231 transitions. [2023-11-12 02:16:40,745 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 4231 transitions. Word has length 61 [2023-11-12 02:16:40,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:40,746 INFO L495 AbstractCegarLoop]: Abstraction has 2985 states and 4231 transitions. [2023-11-12 02:16:40,746 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) [2023-11-12 02:16:40,746 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 4231 transitions. [2023-11-12 02:16:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-12 02:16:40,747 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:40,748 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] [2023-11-12 02:16:40,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:16:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:16:40,954 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:40,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 168764099, now seen corresponding path program 1 times [2023-11-12 02:16:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:40,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283165172] [2023-11-12 02:16:40,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,674 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:41,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:41,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283165172] [2023-11-12 02:16:41,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283165172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:16:41,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508465384] [2023-11-12 02:16:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:41,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:16:41,675 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:41,677 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:16:41,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:16:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:41,807 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:16:41,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:16:42,675 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:42,675 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:16:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:43,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508465384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:16:43,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:16:43,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 30 [2023-11-12 02:16:43,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798335867] [2023-11-12 02:16:43,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:16:43,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-12 02:16:43,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:43,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-12 02:16:43,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=753, Unknown=0, NotChecked=0, Total=870 [2023-11-12 02:16:43,900 INFO L87 Difference]: Start difference. First operand 2985 states and 4231 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) [2023-11-12 02:16:47,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:47,633 INFO L93 Difference]: Finished difference Result 8804 states and 11506 transitions. [2023-11-12 02:16:47,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-12 02:16:47,634 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 [2023-11-12 02:16:47,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:47,656 INFO L225 Difference]: With dead ends: 8804 [2023-11-12 02:16:47,656 INFO L226 Difference]: Without dead ends: 6771 [2023-11-12 02:16:47,661 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 [2023-11-12 02:16:47,662 INFO L413 NwaCegarLoop]: 1494 mSDtfsCounter, 18352 mSDsluCounter, 8020 mSDsCounter, 0 mSdLazyCounter, 725 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18352 SdHoareTripleChecker+Valid, 9514 SdHoareTripleChecker+Invalid, 772 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 725 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:47,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18352 Valid, 9514 Invalid, 772 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [47 Valid, 725 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-12 02:16:47,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6771 states. [2023-11-12 02:16:48,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6771 to 6361. [2023-11-12 02:16:48,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6361 states, 6359 states have (on average 1.3165592074225507) internal successors, (8372), 6360 states have internal predecessors, (8372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:48,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6361 states to 6361 states and 8372 transitions. [2023-11-12 02:16:48,107 INFO L78 Accepts]: Start accepts. Automaton has 6361 states and 8372 transitions. Word has length 62 [2023-11-12 02:16:48,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:48,108 INFO L495 AbstractCegarLoop]: Abstraction has 6361 states and 8372 transitions. [2023-11-12 02:16:48,108 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) [2023-11-12 02:16:48,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6361 states and 8372 transitions. [2023-11-12 02:16:48,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-12 02:16:48,110 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:48,110 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] [2023-11-12 02:16:48,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:16:48,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:16:48,317 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:48,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:48,318 INFO L85 PathProgramCache]: Analyzing trace with hash 225757237, now seen corresponding path program 1 times [2023-11-12 02:16:48,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:48,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581869473] [2023-11-12 02:16:48,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:48,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:48,758 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:48,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:16:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581869473] [2023-11-12 02:16:48,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581869473] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:16:48,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116074101] [2023-11-12 02:16:48,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:48,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:16:48,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:48,761 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:16:48,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:16:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:16:48,873 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:16:48,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:16:49,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:49,711 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:16:50,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:16:50,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116074101] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:16:50,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:16:50,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 29 [2023-11-12 02:16:50,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425944518] [2023-11-12 02:16:50,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:16:50,784 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-12 02:16:50,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:16:50,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-12 02:16:50,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2023-11-12 02:16:50,786 INFO L87 Difference]: Start difference. First operand 6361 states and 8372 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) [2023-11-12 02:16:52,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:16:52,096 INFO L93 Difference]: Finished difference Result 11713 states and 15015 transitions. [2023-11-12 02:16:52,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-12 02:16:52,097 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 [2023-11-12 02:16:52,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:16:52,147 INFO L225 Difference]: With dead ends: 11713 [2023-11-12 02:16:52,148 INFO L226 Difference]: Without dead ends: 6833 [2023-11-12 02:16:52,158 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 [2023-11-12 02:16:52,159 INFO L413 NwaCegarLoop]: 1506 mSDtfsCounter, 10343 mSDsluCounter, 9290 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10343 SdHoareTripleChecker+Valid, 10796 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:16:52,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10343 Valid, 10796 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:16:52,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6833 states. [2023-11-12 02:16:52,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6833 to 6485. [2023-11-12 02:16:52,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6485 states, 6483 states have (on average 1.302946166898041) internal successors, (8447), 6484 states have internal predecessors, (8447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:16:52,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6485 states to 6485 states and 8447 transitions. [2023-11-12 02:16:52,609 INFO L78 Accepts]: Start accepts. Automaton has 6485 states and 8447 transitions. Word has length 62 [2023-11-12 02:16:52,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:16:52,610 INFO L495 AbstractCegarLoop]: Abstraction has 6485 states and 8447 transitions. [2023-11-12 02:16:52,610 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) [2023-11-12 02:16:52,610 INFO L276 IsEmpty]: Start isEmpty. Operand 6485 states and 8447 transitions. [2023-11-12 02:16:52,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-12 02:16:52,612 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:16:52,612 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] [2023-11-12 02:16:52,623 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:16:52,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8064ba4a-87d3-4595-83c6-5547912adbe2/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-12 02:16:52,819 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-12 02:16:52,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:52,819 INFO L85 PathProgramCache]: Analyzing trace with hash -753982150, now seen corresponding path program 1 times [2023-11-12 02:16:52,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:52,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941824731] [2023-11-12 02:16:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:52,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:52,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat