./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme --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 6325d9fccdba44ffb7ef0e133bfabfb6d285a7f8e20c4133b9b681e02437a24c --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:46:16,902 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:46:17,042 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:46:17,056 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:46:17,057 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:46:17,105 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:46:17,106 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:46:17,106 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:46:17,107 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:46:17,115 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:46:17,115 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:46:17,116 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:46:17,116 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:46:17,118 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:46:17,119 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:46:17,119 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:46:17,120 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:46:17,120 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:46:17,121 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:46:17,121 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:46:17,121 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:46:17,122 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:46:17,122 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:46:17,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:46:17,123 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:46:17,124 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:46:17,124 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:46:17,125 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:46:17,125 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:46:17,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:46:17,127 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:46:17,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:17,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:46:17,128 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:46:17,128 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:46:17,128 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:46:17,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:46:17,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:46:17,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:46:17,129 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:46:17,130 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:46:17,130 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:46:17,130 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_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6325d9fccdba44ffb7ef0e133bfabfb6d285a7f8e20c4133b9b681e02437a24c [2023-11-26 11:46:17,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:46:17,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:46:17,435 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:46:17,437 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:46:17,440 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:46:17,441 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-26 11:46:20,587 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:46:21,175 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:46:21,177 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-26 11:46:21,217 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/data/71dc6d957/113d3af5d9384b89bb00ed9219e3c847/FLAGc738b1ff1 [2023-11-26 11:46:21,235 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/data/71dc6d957/113d3af5d9384b89bb00ed9219e3c847 [2023-11-26 11:46:21,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:46:21,242 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:46:21,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:21,244 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:46:21,249 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:46:21,250 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:21" (1/1) ... [2023-11-26 11:46:21,251 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24da0f5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:21, skipping insertion in model container [2023-11-26 11:46:21,252 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:46:21" (1/1) ... [2023-11-26 11:46:21,433 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:46:21,848 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_20b69acb-6238-45c6-b8eb-f7617083c34b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2023-11-26 11:46:21,944 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_20b69acb-6238-45c6-b8eb-f7617083c34b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2023-11-26 11:46:23,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:23,017 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:46:23,059 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_20b69acb-6238-45c6-b8eb-f7617083c34b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2023-11-26 11:46:23,086 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_20b69acb-6238-45c6-b8eb-f7617083c34b/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2023-11-26 11:46:23,692 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:46:23,727 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:46:23,728 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23 WrapperNode [2023-11-26 11:46:23,728 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:46:23,729 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:23,730 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:46:23,730 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:46:23,738 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:23,806 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,237 INFO L138 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4980 [2023-11-26 11:46:24,238 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:46:24,239 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:46:24,239 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:46:24,239 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:46:24,251 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,252 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,315 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,517 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:46:24,517 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,518 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,692 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,751 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,770 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,879 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:46:24,881 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:46:24,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:46:24,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:46:24,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (1/1) ... [2023-11-26 11:46:24,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:46:24,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:24,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:46:24,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:46:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:46:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:46:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:46:24,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:46:25,111 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:46:25,114 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:46:30,745 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:46:30,818 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:46:30,819 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-26 11:46:30,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:30 BoogieIcfgContainer [2023-11-26 11:46:30,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:46:30,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:46:30,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:46:30,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:46:30,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:46:21" (1/3) ... [2023-11-26 11:46:30,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfddf83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:30, skipping insertion in model container [2023-11-26 11:46:30,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:46:23" (2/3) ... [2023-11-26 11:46:30,830 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cfddf83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:46:30, skipping insertion in model container [2023-11-26 11:46:30,830 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:46:30" (3/3) ... [2023-11-26 11:46:30,831 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2023-11-26 11:46:30,853 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:46:30,854 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-26 11:46:30,931 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:46:30,938 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;@649bc67, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:46:30,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-26 11:46:30,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:30,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:46:30,962 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:30,963 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:30,964 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:30,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:30,973 INFO L85 PathProgramCache]: Analyzing trace with hash -2106044916, now seen corresponding path program 1 times [2023-11-26 11:46:30,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:30,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964308836] [2023-11-26 11:46:30,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:30,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:31,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:31,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:31,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964308836] [2023-11-26 11:46:31,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964308836] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:31,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:31,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:46:31,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817619461] [2023-11-26 11:46:31,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:31,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-26 11:46:31,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:31,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-26 11:46:31,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-26 11:46:31,251 INFO L87 Difference]: Start difference. First operand has 809 states, 806 states have (on average 1.978908188585608) internal successors, (1595), 808 states have internal predecessors, (1595), 0 states have call successors, (0), 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 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:31,401 INFO L93 Difference]: Finished difference Result 1597 states and 3151 transitions. [2023-11-26 11:46:31,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-26 11:46:31,404 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-26 11:46:31,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:31,433 INFO L225 Difference]: With dead ends: 1597 [2023-11-26 11:46:31,433 INFO L226 Difference]: Without dead ends: 805 [2023-11-26 11:46:31,443 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 [2023-11-26 11:46:31,449 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1523 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:31,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1523 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:31,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-26 11:46:31,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-11-26 11:46:31,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8978829389788294) internal successors, (1524), 804 states have internal predecessors, (1524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1524 transitions. [2023-11-26 11:46:31,581 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1524 transitions. Word has length 17 [2023-11-26 11:46:31,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:31,589 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1524 transitions. [2023-11-26 11:46:31,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:31,590 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1524 transitions. [2023-11-26 11:46:31,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2023-11-26 11:46:31,591 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:31,591 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:31,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:46:31,592 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:31,593 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:31,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1602116366, now seen corresponding path program 1 times [2023-11-26 11:46:31,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:31,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206752636] [2023-11-26 11:46:31,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:31,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:32,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206752636] [2023-11-26 11:46:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206752636] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:32,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:32,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288950853] [2023-11-26 11:46:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:32,086 INFO L87 Difference]: Start difference. First operand 805 states and 1524 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:32,182 INFO L93 Difference]: Finished difference Result 839 states and 1576 transitions. [2023-11-26 11:46:32,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:32,183 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2023-11-26 11:46:32,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:32,188 INFO L225 Difference]: With dead ends: 839 [2023-11-26 11:46:32,189 INFO L226 Difference]: Without dead ends: 805 [2023-11-26 11:46:32,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:32,191 INFO L413 NwaCegarLoop]: 1521 mSDtfsCounter, 0 mSDsluCounter, 3022 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4543 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 [2023-11-26 11:46:32,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4543 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2023-11-26 11:46:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 805. [2023-11-26 11:46:32,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 805 states, 803 states have (on average 1.8779576587795765) internal successors, (1508), 804 states have internal predecessors, (1508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 805 states to 805 states and 1508 transitions. [2023-11-26 11:46:32,229 INFO L78 Accepts]: Start accepts. Automaton has 805 states and 1508 transitions. Word has length 17 [2023-11-26 11:46:32,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:32,230 INFO L495 AbstractCegarLoop]: Abstraction has 805 states and 1508 transitions. [2023-11-26 11:46:32,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,230 INFO L276 IsEmpty]: Start isEmpty. Operand 805 states and 1508 transitions. [2023-11-26 11:46:32,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 11:46:32,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:32,232 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] [2023-11-26 11:46:32,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:46:32,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:32,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:32,233 INFO L85 PathProgramCache]: Analyzing trace with hash -1530210848, now seen corresponding path program 1 times [2023-11-26 11:46:32,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:32,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502492383] [2023-11-26 11:46:32,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:32,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:32,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:32,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:32,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502492383] [2023-11-26 11:46:32,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502492383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:32,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:32,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:46:32,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391546327] [2023-11-26 11:46:32,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:32,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:32,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:32,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:32,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:32,413 INFO L87 Difference]: Start difference. First operand 805 states and 1508 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:32,624 INFO L93 Difference]: Finished difference Result 991 states and 1802 transitions. [2023-11-26 11:46:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:46:32,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2023-11-26 11:46:32,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:32,631 INFO L225 Difference]: With dead ends: 991 [2023-11-26 11:46:32,632 INFO L226 Difference]: Without dead ends: 960 [2023-11-26 11:46:32,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:46:32,640 INFO L413 NwaCegarLoop]: 1499 mSDtfsCounter, 4669 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4669 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:32,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4669 Valid, 1742 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:32,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 960 states. [2023-11-26 11:46:32,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 960 to 834. [2023-11-26 11:46:32,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 834 states, 832 states have (on average 1.8677884615384615) internal successors, (1554), 833 states have internal predecessors, (1554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1554 transitions. [2023-11-26 11:46:32,676 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1554 transitions. Word has length 32 [2023-11-26 11:46:32,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:32,677 INFO L495 AbstractCegarLoop]: Abstraction has 834 states and 1554 transitions. [2023-11-26 11:46:32,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,684 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1554 transitions. [2023-11-26 11:46:32,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 11:46:32,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:32,689 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:32,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:46:32,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:32,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:32,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1777422384, now seen corresponding path program 1 times [2023-11-26 11:46:32,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:32,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659254530] [2023-11-26 11:46:32,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:32,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:32,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:32,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:32,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659254530] [2023-11-26 11:46:32,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659254530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:32,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:32,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:32,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969060337] [2023-11-26 11:46:32,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:32,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:32,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:32,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:32,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:32,797 INFO L87 Difference]: Start difference. First operand 834 states and 1554 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:32,853 INFO L93 Difference]: Finished difference Result 943 states and 1725 transitions. [2023-11-26 11:46:32,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:32,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-26 11:46:32,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:32,860 INFO L225 Difference]: With dead ends: 943 [2023-11-26 11:46:32,860 INFO L226 Difference]: Without dead ends: 883 [2023-11-26 11:46:32,861 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 [2023-11-26 11:46:32,871 INFO L413 NwaCegarLoop]: 1501 mSDtfsCounter, 1466 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1466 SdHoareTripleChecker+Valid, 1542 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:32,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1466 Valid, 1542 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:32,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-26 11:46:32,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 879. [2023-11-26 11:46:32,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.8494868871151653) internal successors, (1622), 878 states have internal predecessors, (1622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1622 transitions. [2023-11-26 11:46:32,904 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1622 transitions. Word has length 34 [2023-11-26 11:46:32,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:32,904 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1622 transitions. [2023-11-26 11:46:32,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:32,905 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1622 transitions. [2023-11-26 11:46:32,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-26 11:46:32,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:32,911 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] [2023-11-26 11:46:32,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:46:32,911 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:32,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:32,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1775277432, now seen corresponding path program 1 times [2023-11-26 11:46:32,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:32,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647332585] [2023-11-26 11:46:32,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:32,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:33,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:33,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:33,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647332585] [2023-11-26 11:46:33,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647332585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:33,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:33,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:46:33,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445777526] [2023-11-26 11:46:33,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:33,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:33,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:33,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:33,100 INFO L87 Difference]: Start difference. First operand 879 states and 1622 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:33,215 INFO L93 Difference]: Finished difference Result 986 states and 1786 transitions. [2023-11-26 11:46:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:46:33,215 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2023-11-26 11:46:33,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:33,221 INFO L225 Difference]: With dead ends: 986 [2023-11-26 11:46:33,221 INFO L226 Difference]: Without dead ends: 881 [2023-11-26 11:46:33,222 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 [2023-11-26 11:46:33,223 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 2948 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2948 SdHoareTripleChecker+Valid, 1591 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:33,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2948 Valid, 1591 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:33,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2023-11-26 11:46:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 879. [2023-11-26 11:46:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 879 states, 877 states have (on average 1.847206385404789) internal successors, (1620), 878 states have internal predecessors, (1620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 879 states to 879 states and 1620 transitions. [2023-11-26 11:46:33,253 INFO L78 Accepts]: Start accepts. Automaton has 879 states and 1620 transitions. Word has length 34 [2023-11-26 11:46:33,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:33,253 INFO L495 AbstractCegarLoop]: Abstraction has 879 states and 1620 transitions. [2023-11-26 11:46:33,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,254 INFO L276 IsEmpty]: Start isEmpty. Operand 879 states and 1620 transitions. [2023-11-26 11:46:33,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 11:46:33,255 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:33,255 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] [2023-11-26 11:46:33,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:46:33,256 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:33,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:33,257 INFO L85 PathProgramCache]: Analyzing trace with hash 672590802, now seen corresponding path program 1 times [2023-11-26 11:46:33,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:33,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913935874] [2023-11-26 11:46:33,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:33,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:33,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:33,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:33,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:33,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913935874] [2023-11-26 11:46:33,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913935874] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:33,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:33,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:46:33,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10828339] [2023-11-26 11:46:33,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:33,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:46:33,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:33,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:46:33,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:33,442 INFO L87 Difference]: Start difference. First operand 879 states and 1620 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2023-11-26 11:46:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:33,504 INFO L93 Difference]: Finished difference Result 887 states and 1629 transitions. [2023-11-26 11:46:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:46:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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 [2023-11-26 11:46:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:33,511 INFO L225 Difference]: With dead ends: 887 [2023-11-26 11:46:33,512 INFO L226 Difference]: Without dead ends: 885 [2023-11-26 11:46:33,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:46:33,513 INFO L413 NwaCegarLoop]: 1504 mSDtfsCounter, 1 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:33,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4504 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:33,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-11-26 11:46:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 883. [2023-11-26 11:46:33,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 881 states have (on average 1.8422247446083995) internal successors, (1623), 882 states have internal predecessors, (1623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1623 transitions. [2023-11-26 11:46:33,544 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1623 transitions. Word has length 35 [2023-11-26 11:46:33,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:33,544 INFO L495 AbstractCegarLoop]: Abstraction has 883 states and 1623 transitions. [2023-11-26 11:46:33,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 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) [2023-11-26 11:46:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1623 transitions. [2023-11-26 11:46:33,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:46:33,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:33,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:33,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:46:33,546 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:33,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:33,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1662873624, now seen corresponding path program 1 times [2023-11-26 11:46:33,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:33,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321586223] [2023-11-26 11:46:33,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:33,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:33,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:33,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321586223] [2023-11-26 11:46:33,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321586223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:33,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:33,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:33,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176066713] [2023-11-26 11:46:33,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:33,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:33,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:33,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:33,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:33,603 INFO L87 Difference]: Start difference. First operand 883 states and 1623 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:33,652 INFO L93 Difference]: Finished difference Result 1085 states and 1923 transitions. [2023-11-26 11:46:33,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:33,653 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 11:46:33,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:33,660 INFO L225 Difference]: With dead ends: 1085 [2023-11-26 11:46:33,661 INFO L226 Difference]: Without dead ends: 976 [2023-11-26 11:46:33,661 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 [2023-11-26 11:46:33,662 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1473 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 1577 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:33,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 1577 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:33,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-11-26 11:46:33,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 974. [2023-11-26 11:46:33,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 974 states, 972 states have (on average 1.8045267489711934) internal successors, (1754), 973 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 974 states to 974 states and 1754 transitions. [2023-11-26 11:46:33,697 INFO L78 Accepts]: Start accepts. Automaton has 974 states and 1754 transitions. Word has length 36 [2023-11-26 11:46:33,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:33,697 INFO L495 AbstractCegarLoop]: Abstraction has 974 states and 1754 transitions. [2023-11-26 11:46:33,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,698 INFO L276 IsEmpty]: Start isEmpty. Operand 974 states and 1754 transitions. [2023-11-26 11:46:33,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-26 11:46:33,699 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:33,699 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] [2023-11-26 11:46:33,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:46:33,699 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:33,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:33,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1743360232, now seen corresponding path program 1 times [2023-11-26 11:46:33,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:33,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143016401] [2023-11-26 11:46:33,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:33,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:33,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:33,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:33,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143016401] [2023-11-26 11:46:33,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143016401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:33,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:33,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:33,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664320062] [2023-11-26 11:46:33,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:33,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:33,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:33,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:33,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:33,750 INFO L87 Difference]: Start difference. First operand 974 states and 1754 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:33,797 INFO L93 Difference]: Finished difference Result 1342 states and 2288 transitions. [2023-11-26 11:46:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2023-11-26 11:46:33,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:33,805 INFO L225 Difference]: With dead ends: 1342 [2023-11-26 11:46:33,806 INFO L226 Difference]: Without dead ends: 1142 [2023-11-26 11:46:33,807 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 [2023-11-26 11:46:33,807 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 1475 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 1583 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:33,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1475 Valid, 1583 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1142 states. [2023-11-26 11:46:33,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1142 to 1140. [2023-11-26 11:46:33,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1140 states, 1138 states have (on average 1.7434094903339192) internal successors, (1984), 1139 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1140 states to 1140 states and 1984 transitions. [2023-11-26 11:46:33,910 INFO L78 Accepts]: Start accepts. Automaton has 1140 states and 1984 transitions. Word has length 36 [2023-11-26 11:46:33,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:33,910 INFO L495 AbstractCegarLoop]: Abstraction has 1140 states and 1984 transitions. [2023-11-26 11:46:33,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:33,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1140 states and 1984 transitions. [2023-11-26 11:46:33,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:46:33,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:33,912 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] [2023-11-26 11:46:33,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:46:33,912 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:33,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:33,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1790190323, now seen corresponding path program 1 times [2023-11-26 11:46:33,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:33,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757585401] [2023-11-26 11:46:33,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:33,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:33,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757585401] [2023-11-26 11:46:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757585401] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:33,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:33,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:33,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292010729] [2023-11-26 11:46:33,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:33,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:33,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:33,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:33,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:33,981 INFO L87 Difference]: Start difference. First operand 1140 states and 1984 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2023-11-26 11:46:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:34,032 INFO L93 Difference]: Finished difference Result 1531 states and 2558 transitions. [2023-11-26 11:46:34,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:34,033 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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 [2023-11-26 11:46:34,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:34,041 INFO L225 Difference]: With dead ends: 1531 [2023-11-26 11:46:34,041 INFO L226 Difference]: Without dead ends: 1312 [2023-11-26 11:46:34,042 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 [2023-11-26 11:46:34,044 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 1474 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1474 SdHoareTripleChecker+Valid, 1584 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:34,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1474 Valid, 1584 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:34,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1312 states. [2023-11-26 11:46:34,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1312 to 1310. [2023-11-26 11:46:34,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1310 states, 1308 states have (on average 1.698776758409786) internal successors, (2222), 1309 states have internal predecessors, (2222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:34,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1310 states to 1310 states and 2222 transitions. [2023-11-26 11:46:34,089 INFO L78 Accepts]: Start accepts. Automaton has 1310 states and 2222 transitions. Word has length 38 [2023-11-26 11:46:34,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:34,090 INFO L495 AbstractCegarLoop]: Abstraction has 1310 states and 2222 transitions. [2023-11-26 11:46:34,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 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) [2023-11-26 11:46:34,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1310 states and 2222 transitions. [2023-11-26 11:46:34,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:46:34,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:34,092 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] [2023-11-26 11:46:34,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-26 11:46:34,092 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:34,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:34,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1801881872, now seen corresponding path program 1 times [2023-11-26 11:46:34,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:34,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105757282] [2023-11-26 11:46:34,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:34,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:34,290 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 11:46:34,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:34,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105757282] [2023-11-26 11:46:34,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105757282] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:34,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:34,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:46:34,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615881913] [2023-11-26 11:46:34,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:34,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:34,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:34,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:34,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:34,293 INFO L87 Difference]: Start difference. First operand 1310 states and 2222 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:34,460 INFO L93 Difference]: Finished difference Result 3034 states and 4670 transitions. [2023-11-26 11:46:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:46:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 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 50 [2023-11-26 11:46:34,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:34,475 INFO L225 Difference]: With dead ends: 3034 [2023-11-26 11:46:34,475 INFO L226 Difference]: Without dead ends: 2500 [2023-11-26 11:46:34,477 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 [2023-11-26 11:46:34,477 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 3051 mSDsluCounter, 1595 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3051 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:34,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3051 Valid, 3138 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:34,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2500 states. [2023-11-26 11:46:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2500 to 1842. [2023-11-26 11:46:34,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1840 states have (on average 1.6141304347826086) internal successors, (2970), 1841 states have internal predecessors, (2970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:34,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2970 transitions. [2023-11-26 11:46:34,552 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2970 transitions. Word has length 50 [2023-11-26 11:46:34,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:34,552 INFO L495 AbstractCegarLoop]: Abstraction has 1842 states and 2970 transitions. [2023-11-26 11:46:34,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:34,553 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2970 transitions. [2023-11-26 11:46:34,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:46:34,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:34,554 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] [2023-11-26 11:46:34,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 11:46:34,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:34,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:34,555 INFO L85 PathProgramCache]: Analyzing trace with hash 913148432, now seen corresponding path program 1 times [2023-11-26 11:46:34,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:34,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044247921] [2023-11-26 11:46:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:34,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:34,661 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:46:34,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:34,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044247921] [2023-11-26 11:46:34,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044247921] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:34,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:34,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:46:34,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118002298] [2023-11-26 11:46:34,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:34,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:34,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:34,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:34,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:34,664 INFO L87 Difference]: Start difference. First operand 1842 states and 2970 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:34,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:34,836 INFO L93 Difference]: Finished difference Result 3566 states and 5418 transitions. [2023-11-26 11:46:34,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:46:34,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 50 [2023-11-26 11:46:34,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:34,854 INFO L225 Difference]: With dead ends: 3566 [2023-11-26 11:46:34,854 INFO L226 Difference]: Without dead ends: 3032 [2023-11-26 11:46:34,856 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 [2023-11-26 11:46:34,856 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 3043 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3153 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:34,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3153 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:34,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3032 states. [2023-11-26 11:46:34,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3032 to 2642. [2023-11-26 11:46:34,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2640 states have (on average 1.5462121212121211) internal successors, (4082), 2641 states have internal predecessors, (4082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:34,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4082 transitions. [2023-11-26 11:46:34,963 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4082 transitions. Word has length 50 [2023-11-26 11:46:34,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:34,964 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 4082 transitions. [2023-11-26 11:46:34,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:34,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4082 transitions. [2023-11-26 11:46:34,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:46:34,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:34,965 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] [2023-11-26 11:46:34,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:46:34,966 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:34,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:34,966 INFO L85 PathProgramCache]: Analyzing trace with hash 615190968, now seen corresponding path program 1 times [2023-11-26 11:46:34,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:34,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089647835] [2023-11-26 11:46:34,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:34,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:34,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:35,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:35,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:35,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089647835] [2023-11-26 11:46:35,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089647835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:35,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:35,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930603532] [2023-11-26 11:46:35,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:35,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:35,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:35,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:35,063 INFO L87 Difference]: Start difference. First operand 2642 states and 4082 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:35,137 INFO L93 Difference]: Finished difference Result 4005 states and 6032 transitions. [2023-11-26 11:46:35,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:35,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2023-11-26 11:46:35,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:35,149 INFO L225 Difference]: With dead ends: 4005 [2023-11-26 11:46:35,150 INFO L226 Difference]: Without dead ends: 2139 [2023-11-26 11:46:35,152 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 [2023-11-26 11:46:35,153 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 34 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 3020 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:35,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 3020 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:35,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2023-11-26 11:46:35,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2137. [2023-11-26 11:46:35,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 2135 states have (on average 1.5836065573770493) internal successors, (3381), 2136 states have internal predecessors, (3381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 3381 transitions. [2023-11-26 11:46:35,229 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 3381 transitions. Word has length 52 [2023-11-26 11:46:35,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:35,229 INFO L495 AbstractCegarLoop]: Abstraction has 2137 states and 3381 transitions. [2023-11-26 11:46:35,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 3381 transitions. [2023-11-26 11:46:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:46:35,231 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:35,231 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] [2023-11-26 11:46:35,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:46:35,231 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:35,232 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash -759813067, now seen corresponding path program 1 times [2023-11-26 11:46:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:35,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595250494] [2023-11-26 11:46:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:35,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:35,384 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:46:35,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:35,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595250494] [2023-11-26 11:46:35,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595250494] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:35,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:35,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:46:35,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990583198] [2023-11-26 11:46:35,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:35,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:46:35,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:35,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:46:35,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:46:35,387 INFO L87 Difference]: Start difference. First operand 2137 states and 3381 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) [2023-11-26 11:46:35,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:35,540 INFO L93 Difference]: Finished difference Result 3297 states and 5041 transitions. [2023-11-26 11:46:35,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:46:35,541 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 52 [2023-11-26 11:46:35,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:35,556 INFO L225 Difference]: With dead ends: 3297 [2023-11-26 11:46:35,556 INFO L226 Difference]: Without dead ends: 2911 [2023-11-26 11:46:35,558 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 [2023-11-26 11:46:35,558 INFO L413 NwaCegarLoop]: 1541 mSDtfsCounter, 3043 mSDsluCounter, 1597 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3043 SdHoareTripleChecker+Valid, 3138 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:35,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3043 Valid, 3138 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:46:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2023-11-26 11:46:35,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2521. [2023-11-26 11:46:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2521 states, 2519 states have (on average 1.5581579992060341) internal successors, (3925), 2520 states have internal predecessors, (3925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 3925 transitions. [2023-11-26 11:46:35,647 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 3925 transitions. Word has length 52 [2023-11-26 11:46:35,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:35,648 INFO L495 AbstractCegarLoop]: Abstraction has 2521 states and 3925 transitions. [2023-11-26 11:46:35,648 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) [2023-11-26 11:46:35,648 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 3925 transitions. [2023-11-26 11:46:35,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 11:46:35,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:35,649 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] [2023-11-26 11:46:35,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 11:46:35,650 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:35,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:35,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1640470092, now seen corresponding path program 1 times [2023-11-26 11:46:35,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:35,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598528332] [2023-11-26 11:46:35,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:35,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:35,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:35,735 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:35,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:35,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598528332] [2023-11-26 11:46:35,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598528332] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:35,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:35,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:35,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915400832] [2023-11-26 11:46:35,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:35,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:35,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:35,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:35,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:35,738 INFO L87 Difference]: Start difference. First operand 2521 states and 3925 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:35,796 INFO L93 Difference]: Finished difference Result 3389 states and 5151 transitions. [2023-11-26 11:46:35,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:35,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2023-11-26 11:46:35,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:35,806 INFO L225 Difference]: With dead ends: 3389 [2023-11-26 11:46:35,806 INFO L226 Difference]: Without dead ends: 1659 [2023-11-26 11:46:35,808 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 [2023-11-26 11:46:35,809 INFO L413 NwaCegarLoop]: 1522 mSDtfsCounter, 29 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 3005 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:35,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 3005 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:35,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2023-11-26 11:46:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1657. [2023-11-26 11:46:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1657 states, 1655 states have (on average 1.6211480362537765) internal successors, (2683), 1656 states have internal predecessors, (2683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1657 states to 1657 states and 2683 transitions. [2023-11-26 11:46:35,864 INFO L78 Accepts]: Start accepts. Automaton has 1657 states and 2683 transitions. Word has length 53 [2023-11-26 11:46:35,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:35,865 INFO L495 AbstractCegarLoop]: Abstraction has 1657 states and 2683 transitions. [2023-11-26 11:46:35,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:35,865 INFO L276 IsEmpty]: Start isEmpty. Operand 1657 states and 2683 transitions. [2023-11-26 11:46:35,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:46:35,866 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:35,866 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] [2023-11-26 11:46:35,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:46:35,867 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:35,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:35,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1012299426, now seen corresponding path program 1 times [2023-11-26 11:46:35,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:35,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693691915] [2023-11-26 11:46:35,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:35,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:35,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:35,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:35,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:35,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693691915] [2023-11-26 11:46:35,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693691915] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:35,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:35,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:46:35,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421083960] [2023-11-26 11:46:35,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:35,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:46:35,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:35,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:46:35,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:46:35,959 INFO L87 Difference]: Start difference. First operand 1657 states and 2683 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2023-11-26 11:46:36,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:36,007 INFO L93 Difference]: Finished difference Result 2093 states and 3288 transitions. [2023-11-26 11:46:36,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:46:36,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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 55 [2023-11-26 11:46:36,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:36,014 INFO L225 Difference]: With dead ends: 2093 [2023-11-26 11:46:36,015 INFO L226 Difference]: Without dead ends: 1227 [2023-11-26 11:46:36,016 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 [2023-11-26 11:46:36,017 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 26 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 2990 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:36,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 2990 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:46:36,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1227 states. [2023-11-26 11:46:36,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1227 to 1225. [2023-11-26 11:46:36,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1225 states, 1223 states have (on average 1.6933769419460343) internal successors, (2071), 1224 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 2071 transitions. [2023-11-26 11:46:36,054 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 2071 transitions. Word has length 55 [2023-11-26 11:46:36,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:36,055 INFO L495 AbstractCegarLoop]: Abstraction has 1225 states and 2071 transitions. [2023-11-26 11:46:36,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 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) [2023-11-26 11:46:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 2071 transitions. [2023-11-26 11:46:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:46:36,056 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:36,056 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] [2023-11-26 11:46:36,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:46:36,057 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:36,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash 1129129232, now seen corresponding path program 1 times [2023-11-26 11:46:36,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:36,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480053767] [2023-11-26 11:46:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:36,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:40,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:40,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:40,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480053767] [2023-11-26 11:46:40,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480053767] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:40,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840771494] [2023-11-26 11:46:40,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:40,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:40,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:40,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:40,373 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:46:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:40,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:46:40,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:46:40,737 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:40,949 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:46:40,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840771494] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:40,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:46:40,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 4] total 18 [2023-11-26 11:46:40,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555522627] [2023-11-26 11:46:40,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:40,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:46:40,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:40,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:46:40,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:46:40,953 INFO L87 Difference]: Start difference. First operand 1225 states and 2071 transitions. Second operand has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:45,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:45,764 INFO L93 Difference]: Finished difference Result 3378 states and 4914 transitions. [2023-11-26 11:46:45,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-26 11:46:45,765 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 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 [2023-11-26 11:46:45,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:45,781 INFO L225 Difference]: With dead ends: 3378 [2023-11-26 11:46:45,781 INFO L226 Difference]: Without dead ends: 2944 [2023-11-26 11:46:45,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1046 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=744, Invalid=2916, Unknown=0, NotChecked=0, Total=3660 [2023-11-26 11:46:45,785 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 15526 mSDsluCounter, 4739 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15526 SdHoareTripleChecker+Valid, 6234 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:45,785 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15526 Valid, 6234 Invalid, 609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [45 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:46:45,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2944 states. [2023-11-26 11:46:45,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2944 to 2786. [2023-11-26 11:46:45,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2784 states have (on average 1.4428879310344827) internal successors, (4017), 2785 states have internal predecessors, (4017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:45,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4017 transitions. [2023-11-26 11:46:45,929 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4017 transitions. Word has length 57 [2023-11-26 11:46:45,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:45,930 INFO L495 AbstractCegarLoop]: Abstraction has 2786 states and 4017 transitions. [2023-11-26 11:46:45,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.722222222222221) internal successors, (157), 18 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:45,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4017 transitions. [2023-11-26 11:46:45,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:46:45,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:45,932 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] [2023-11-26 11:46:45,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:46,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-26 11:46:46,138 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:46,138 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:46,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1944087233, now seen corresponding path program 1 times [2023-11-26 11:46:46,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:46,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684838635] [2023-11-26 11:46:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:46,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:47,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:47,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684838635] [2023-11-26 11:46:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684838635] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:47,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391786076] [2023-11-26 11:46:47,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:47,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:47,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:47,712 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:47,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:46:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:47,852 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:46:47,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:48,626 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:48,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:49,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391786076] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:49,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:46:49,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 32 [2023-11-26 11:46:49,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388557576] [2023-11-26 11:46:49,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:49,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-11-26 11:46:49,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:49,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-11-26 11:46:49,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=821, Unknown=0, NotChecked=0, Total=992 [2023-11-26 11:46:49,646 INFO L87 Difference]: Start difference. First operand 2786 states and 4017 transitions. Second operand has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:51,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:51,199 INFO L93 Difference]: Finished difference Result 6754 states and 9033 transitions. [2023-11-26 11:46:51,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:46:51,199 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-11-26 11:46:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:51,214 INFO L225 Difference]: With dead ends: 6754 [2023-11-26 11:46:51,214 INFO L226 Difference]: Without dead ends: 5024 [2023-11-26 11:46:51,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=530, Invalid=1822, Unknown=0, NotChecked=0, Total=2352 [2023-11-26 11:46:51,219 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 19339 mSDsluCounter, 7683 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19339 SdHoareTripleChecker+Valid, 9176 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:51,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19339 Valid, 9176 Invalid, 542 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [31 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:46:51,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5024 states. [2023-11-26 11:46:51,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5024 to 4692. [2023-11-26 11:46:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4692 states, 4690 states have (on average 1.3562899786780385) internal successors, (6361), 4691 states have internal predecessors, (6361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:51,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4692 states to 4692 states and 6361 transitions. [2023-11-26 11:46:51,463 INFO L78 Accepts]: Start accepts. Automaton has 4692 states and 6361 transitions. Word has length 58 [2023-11-26 11:46:51,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:51,463 INFO L495 AbstractCegarLoop]: Abstraction has 4692 states and 6361 transitions. [2023-11-26 11:46:51,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.8125) internal successors, (154), 32 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 4692 states and 6361 transitions. [2023-11-26 11:46:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:46:51,465 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:51,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:51,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:51,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:46:51,671 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:51,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:51,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1421483023, now seen corresponding path program 1 times [2023-11-26 11:46:51,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:51,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491821939] [2023-11-26 11:46:51,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:51,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:52,054 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:52,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:52,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491821939] [2023-11-26 11:46:52,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491821939] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:52,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [292628100] [2023-11-26 11:46:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:52,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:52,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:52,058 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:52,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:46:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:52,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:46:52,241 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:52,733 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:53,958 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:53,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [292628100] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:53,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:46:53,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 12] total 28 [2023-11-26 11:46:53,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028366758] [2023-11-26 11:46:53,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:53,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-26 11:46:53,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:53,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-26 11:46:53,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=615, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:46:53,962 INFO L87 Difference]: Start difference. First operand 4692 states and 6361 transitions. Second operand has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:54,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:54,860 INFO L93 Difference]: Finished difference Result 9297 states and 12133 transitions. [2023-11-26 11:46:54,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:46:54,860 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-11-26 11:46:54,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:54,874 INFO L225 Difference]: With dead ends: 9297 [2023-11-26 11:46:54,874 INFO L226 Difference]: Without dead ends: 5967 [2023-11-26 11:46:54,879 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=349, Invalid=1211, Unknown=0, NotChecked=0, Total=1560 [2023-11-26 11:46:54,880 INFO L413 NwaCegarLoop]: 1492 mSDtfsCounter, 11961 mSDsluCounter, 6087 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11961 SdHoareTripleChecker+Valid, 7579 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:54,881 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11961 Valid, 7579 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:46:54,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5967 states. [2023-11-26 11:46:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5967 to 5785. [2023-11-26 11:46:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5785 states, 5783 states have (on average 1.335638941725748) internal successors, (7724), 5784 states have internal predecessors, (7724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:55,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5785 states to 5785 states and 7724 transitions. [2023-11-26 11:46:55,147 INFO L78 Accepts]: Start accepts. Automaton has 5785 states and 7724 transitions. Word has length 58 [2023-11-26 11:46:55,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:55,147 INFO L495 AbstractCegarLoop]: Abstraction has 5785 states and 7724 transitions. [2023-11-26 11:46:55,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.357142857142857) internal successors, (150), 28 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:55,148 INFO L276 IsEmpty]: Start isEmpty. Operand 5785 states and 7724 transitions. [2023-11-26 11:46:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:46:55,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:55,149 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:55,161 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:55,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:46:55,352 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:55,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:55,352 INFO L85 PathProgramCache]: Analyzing trace with hash -547926257, now seen corresponding path program 1 times [2023-11-26 11:46:55,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:55,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701542423] [2023-11-26 11:46:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:55,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:55,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:55,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:55,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701542423] [2023-11-26 11:46:55,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701542423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:55,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629871156] [2023-11-26 11:46:55,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:55,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:55,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:55,808 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:55,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:46:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:56,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-26 11:46:56,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:56,785 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:56,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:57,770 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:46:57,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629871156] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:57,771 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:46:57,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 12] total 28 [2023-11-26 11:46:57,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174577796] [2023-11-26 11:46:57,771 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:57,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-26 11:46:57,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-26 11:46:57,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=604, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:46:57,776 INFO L87 Difference]: Start difference. First operand 5785 states and 7724 transitions. Second operand has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:58,920 INFO L93 Difference]: Finished difference Result 10441 states and 13512 transitions. [2023-11-26 11:46:58,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:46:58,921 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2023-11-26 11:46:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:58,935 INFO L225 Difference]: With dead ends: 10441 [2023-11-26 11:46:58,935 INFO L226 Difference]: Without dead ends: 6245 [2023-11-26 11:46:58,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=449, Invalid=1357, Unknown=0, NotChecked=0, Total=1806 [2023-11-26 11:46:58,942 INFO L413 NwaCegarLoop]: 1500 mSDtfsCounter, 10650 mSDsluCounter, 7739 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10650 SdHoareTripleChecker+Valid, 9239 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:58,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10650 Valid, 9239 Invalid, 502 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [25 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:46:58,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2023-11-26 11:46:59,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 5853. [2023-11-26 11:46:59,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5853 states, 5851 states have (on average 1.3278072124423175) internal successors, (7769), 5852 states have internal predecessors, (7769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:59,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5853 states to 5853 states and 7769 transitions. [2023-11-26 11:46:59,205 INFO L78 Accepts]: Start accepts. Automaton has 5853 states and 7769 transitions. Word has length 58 [2023-11-26 11:46:59,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:59,206 INFO L495 AbstractCegarLoop]: Abstraction has 5853 states and 7769 transitions. [2023-11-26 11:46:59,206 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.178571428571429) internal successors, (145), 28 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:46:59,206 INFO L276 IsEmpty]: Start isEmpty. Operand 5853 states and 7769 transitions. [2023-11-26 11:46:59,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:46:59,207 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:59,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:59,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:59,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:59,414 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:59,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:59,414 INFO L85 PathProgramCache]: Analyzing trace with hash 521807150, now seen corresponding path program 1 times [2023-11-26 11:46:59,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:59,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444262792] [2023-11-26 11:46:59,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:59,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,516 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:00,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444262792] [2023-11-26 11:47:00,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444262792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:00,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516943683] [2023-11-26 11:47:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:00,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:00,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:00,520 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:00,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20b69acb-6238-45c6-b8eb-f7617083c34b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:47:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:00,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:47:00,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:01,967 INFO L327 TraceCheckSpWp]: Computing backward predicates...