./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem17_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem17_label02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB --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 adb370abe9a266817aee227dfaf2ff5e2cfdcfe49f97cfc66a125d7a6f5fbb19 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:30,983 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:31,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:50:31,084 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:31,084 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:31,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:31,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:31,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:31,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:31,121 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:31,121 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:31,121 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:31,122 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:31,122 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:31,122 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:31,122 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:31,122 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:31,123 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:31,124 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:31,124 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:31,124 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:31,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:31,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:31,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:31,126 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:31,126 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:31,126 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:31,126 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:31,126 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:31,127 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:31,127 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:31,127 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:31,127 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:31,127 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:31,127 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:31,127 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:31,127 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:31,128 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:31,128 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:31,128 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB 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 -> adb370abe9a266817aee227dfaf2ff5e2cfdcfe49f97cfc66a125d7a6f5fbb19 [2024-11-27 19:50:31,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:31,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:31,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:31,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:31,490 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:31,491 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/eca-rers2012/Problem17_label02.c [2024-11-27 19:50:34,557 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/data/a238bc7d7/000a7397e62e4865baa0770a633eef3c/FLAG6667dc134 [2024-11-27 19:50:35,091 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:35,092 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/sv-benchmarks/c/eca-rers2012/Problem17_label02.c [2024-11-27 19:50:35,124 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/data/a238bc7d7/000a7397e62e4865baa0770a633eef3c/FLAG6667dc134 [2024-11-27 19:50:35,150 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/data/a238bc7d7/000a7397e62e4865baa0770a633eef3c [2024-11-27 19:50:35,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:35,154 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:35,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:35,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:35,162 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:35,163 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:35" (1/1) ... [2024-11-27 19:50:35,164 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a28294b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:35, skipping insertion in model container [2024-11-27 19:50:35,164 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:35" (1/1) ... [2024-11-27 19:50:35,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:35,571 WARN L250 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_8ceadbd0-c360-4da1-9021-020b0a844570/sv-benchmarks/c/eca-rers2012/Problem17_label02.c[7859,7872] [2024-11-27 19:50:36,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:36,239 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:36,307 WARN L250 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_8ceadbd0-c360-4da1-9021-020b0a844570/sv-benchmarks/c/eca-rers2012/Problem17_label02.c[7859,7872] [2024-11-27 19:50:36,638 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:36,659 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:36,660 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36 WrapperNode [2024-11-27 19:50:36,661 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:36,662 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:36,662 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:36,662 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:36,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:36,732 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,138 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2612 [2024-11-27 19:50:37,139 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:37,141 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:37,141 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:37,141 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:37,153 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,268 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,518 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]. [2024-11-27 19:50:37,518 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,519 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,661 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,675 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,703 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,730 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,747 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:37,810 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:37,810 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:37,810 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:37,811 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (1/1) ... [2024-11-27 19:50:37,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:37,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:37,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:37,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:50:37,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:37,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:37,981 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:37,983 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:42,835 INFO L? ?]: Removed 372 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:42,835 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:42,909 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:42,909 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 19:50:42,910 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:42 BoogieIcfgContainer [2024-11-27 19:50:42,910 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:42,912 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:42,912 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:42,923 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:42,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:35" (1/3) ... [2024-11-27 19:50:42,924 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19778350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:42, skipping insertion in model container [2024-11-27 19:50:42,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:36" (2/3) ... [2024-11-27 19:50:42,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19778350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:42, skipping insertion in model container [2024-11-27 19:50:42,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:42" (3/3) ... [2024-11-27 19:50:42,930 INFO L128 eAbstractionObserver]: Analyzing ICFG Problem17_label02.c [2024-11-27 19:50:42,963 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:42,965 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Problem17_label02.c that has 1 procedures, 590 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 19:50:43,064 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:43,081 INFO L333 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, 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;@592e3998, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:43,081 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:50:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:43,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-27 19:50:43,098 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:43,099 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:43,099 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:43,106 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:43,106 INFO L85 PathProgramCache]: Analyzing trace with hash -92557335, now seen corresponding path program 1 times [2024-11-27 19:50:43,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:43,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291769425] [2024-11-27 19:50:43,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:43,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:43,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:43,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:43,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:43,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291769425] [2024-11-27 19:50:43,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291769425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:43,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:43,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:50:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234544521] [2024-11-27 19:50:43,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:43,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:43,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:43,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:43,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:43,660 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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) [2024-11-27 19:50:47,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:47,243 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2024-11-27 19:50:47,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:47,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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 [2024-11-27 19:50:47,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:47,262 INFO L225 Difference]: With dead ends: 1644 [2024-11-27 19:50:47,262 INFO L226 Difference]: Without dead ends: 977 [2024-11-27 19:50:47,267 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:47,270 INFO L435 NwaCegarLoop]: 425 mSDtfsCounter, 435 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:47,270 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 19:50:47,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2024-11-27 19:50:47,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2024-11-27 19:50:47,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:47,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2024-11-27 19:50:47,386 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 53 [2024-11-27 19:50:47,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:47,387 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2024-11-27 19:50:47,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 2 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) [2024-11-27 19:50:47,387 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2024-11-27 19:50:47,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2024-11-27 19:50:47,392 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:47,393 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:47,394 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:50:47,394 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:47,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:47,395 INFO L85 PathProgramCache]: Analyzing trace with hash -10640398, now seen corresponding path program 1 times [2024-11-27 19:50:47,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:47,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418468699] [2024-11-27 19:50:47,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:47,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:47,779 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:47,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:47,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418468699] [2024-11-27 19:50:47,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418468699] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:47,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:47,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:50:47,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582243384] [2024-11-27 19:50:47,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:47,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:47,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:47,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:47,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:47,786 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:50,659 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2024-11-27 19:50:50,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:50,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 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 120 [2024-11-27 19:50:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:50,668 INFO L225 Difference]: With dead ends: 2813 [2024-11-27 19:50:50,668 INFO L226 Difference]: Without dead ends: 1844 [2024-11-27 19:50:50,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:50,673 INFO L435 NwaCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:50,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-27 19:50:50,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2024-11-27 19:50:50,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2024-11-27 19:50:50,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:50,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2024-11-27 19:50:50,736 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 120 [2024-11-27 19:50:50,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:50,738 INFO L471 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2024-11-27 19:50:50,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2024-11-27 19:50:50,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2024-11-27 19:50:50,743 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:50,743 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:50,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 19:50:50,743 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:50,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:50,748 INFO L85 PathProgramCache]: Analyzing trace with hash -703297284, now seen corresponding path program 1 times [2024-11-27 19:50:50,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:50,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695604412] [2024-11-27 19:50:50,748 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:50,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:51,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:51,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695604412] [2024-11-27 19:50:51,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695604412] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:51,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:51,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:50:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750504870] [2024-11-27 19:50:51,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:51,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:50:51,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:51,489 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:50:51,489 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:51,491 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:56,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:56,371 INFO L93 Difference]: Finished difference Result 6765 states and 9258 transitions. [2024-11-27 19:50:56,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:50:56,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 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 123 [2024-11-27 19:50:56,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:56,390 INFO L225 Difference]: With dead ends: 6765 [2024-11-27 19:50:56,391 INFO L226 Difference]: Without dead ends: 4926 [2024-11-27 19:50:56,393 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:50:56,394 INFO L435 NwaCegarLoop]: 201 mSDtfsCounter, 859 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2789 mSolverCounterSat, 594 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 3383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:56,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 329 Invalid, 3383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 2789 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2024-11-27 19:50:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2024-11-27 19:50:56,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 4875. [2024-11-27 19:50:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4875 states, 4874 states have (on average 1.286417726713172) internal successors, (6270), 4874 states have internal predecessors, (6270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:56,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4875 states to 4875 states and 6270 transitions. [2024-11-27 19:50:56,508 INFO L78 Accepts]: Start accepts. Automaton has 4875 states and 6270 transitions. Word has length 123 [2024-11-27 19:50:56,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:56,509 INFO L471 AbstractCegarLoop]: Abstraction has 4875 states and 6270 transitions. [2024-11-27 19:50:56,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:56,509 INFO L276 IsEmpty]: Start isEmpty. Operand 4875 states and 6270 transitions. [2024-11-27 19:50:56,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-27 19:50:56,512 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:56,513 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:56,513 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 19:50:56,513 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:56,514 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:56,514 INFO L85 PathProgramCache]: Analyzing trace with hash 1839715273, now seen corresponding path program 1 times [2024-11-27 19:50:56,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:56,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129225979] [2024-11-27 19:50:56,515 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:56,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:56,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:56,845 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2024-11-27 19:50:56,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:56,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129225979] [2024-11-27 19:50:56,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129225979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:56,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:56,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 19:50:56,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086162864] [2024-11-27 19:50:56,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:56,846 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:50:56,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:56,847 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:50:56,847 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:56,847 INFO L87 Difference]: Start difference. First operand 4875 states and 6270 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:59,648 INFO L93 Difference]: Finished difference Result 14436 states and 18541 transitions. [2024-11-27 19:50:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:50:59,648 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 194 [2024-11-27 19:50:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:59,675 INFO L225 Difference]: With dead ends: 14436 [2024-11-27 19:50:59,675 INFO L226 Difference]: Without dead ends: 8277 [2024-11-27 19:50:59,681 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:50:59,682 INFO L435 NwaCegarLoop]: 515 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:59,682 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [386 Valid, 590 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 19:50:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8277 states. [2024-11-27 19:50:59,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8277 to 6147. [2024-11-27 19:50:59,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6147 states, 6146 states have (on average 1.1906931337455255) internal successors, (7318), 6146 states have internal predecessors, (7318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:59,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6147 states to 6147 states and 7318 transitions. [2024-11-27 19:50:59,821 INFO L78 Accepts]: Start accepts. Automaton has 6147 states and 7318 transitions. Word has length 194 [2024-11-27 19:50:59,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:59,822 INFO L471 AbstractCegarLoop]: Abstraction has 6147 states and 7318 transitions. [2024-11-27 19:50:59,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:50:59,822 INFO L276 IsEmpty]: Start isEmpty. Operand 6147 states and 7318 transitions. [2024-11-27 19:50:59,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-27 19:50:59,824 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:59,825 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:59,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 19:50:59,825 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:59,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:59,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1977125269, now seen corresponding path program 1 times [2024-11-27 19:50:59,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:59,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265990909] [2024-11-27 19:50:59,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:59,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-27 19:51:00,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:00,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265990909] [2024-11-27 19:51:00,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265990909] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:00,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:00,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:00,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370867832] [2024-11-27 19:51:00,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:00,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:00,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:00,109 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:00,109 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:00,109 INFO L87 Difference]: Start difference. First operand 6147 states and 7318 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:02,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:02,777 INFO L93 Difference]: Finished difference Result 15692 states and 18897 transitions. [2024-11-27 19:51:02,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:02,778 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 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 207 [2024-11-27 19:51:02,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:02,804 INFO L225 Difference]: With dead ends: 15692 [2024-11-27 19:51:02,805 INFO L226 Difference]: Without dead ends: 9547 [2024-11-27 19:51:02,811 INFO L434 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 [2024-11-27 19:51:02,812 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 407 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:02,812 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 477 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 19:51:02,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9547 states. [2024-11-27 19:51:02,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9547 to 6124. [2024-11-27 19:51:02,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6124 states, 6123 states have (on average 1.1894496162012085) internal successors, (7283), 6123 states have internal predecessors, (7283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:03,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6124 states to 6124 states and 7283 transitions. [2024-11-27 19:51:03,030 INFO L78 Accepts]: Start accepts. Automaton has 6124 states and 7283 transitions. Word has length 207 [2024-11-27 19:51:03,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:03,033 INFO L471 AbstractCegarLoop]: Abstraction has 6124 states and 7283 transitions. [2024-11-27 19:51:03,033 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:03,033 INFO L276 IsEmpty]: Start isEmpty. Operand 6124 states and 7283 transitions. [2024-11-27 19:51:03,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2024-11-27 19:51:03,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:03,040 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:03,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 19:51:03,040 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:03,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:03,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1027746944, now seen corresponding path program 1 times [2024-11-27 19:51:03,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:03,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625392795] [2024-11-27 19:51:03,042 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:03,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 176 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:03,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:03,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625392795] [2024-11-27 19:51:03,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625392795] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:03,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:03,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:03,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643718871] [2024-11-27 19:51:03,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:03,356 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:03,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:03,357 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:03,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:03,358 INFO L87 Difference]: Start difference. First operand 6124 states and 7283 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:06,271 INFO L93 Difference]: Finished difference Result 16078 states and 19444 transitions. [2024-11-27 19:51:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:06,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2024-11-27 19:51:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:06,299 INFO L225 Difference]: With dead ends: 16078 [2024-11-27 19:51:06,299 INFO L226 Difference]: Without dead ends: 9956 [2024-11-27 19:51:06,305 INFO L434 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 [2024-11-27 19:51:06,306 INFO L435 NwaCegarLoop]: 734 mSDtfsCounter, 487 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 1224 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:06,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [487 Valid, 788 Invalid, 1544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1224 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-27 19:51:06,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9956 states. [2024-11-27 19:51:06,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9956 to 9956. [2024-11-27 19:51:06,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9956 states, 9955 states have (on average 1.171672526368659) internal successors, (11664), 9955 states have internal predecessors, (11664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:06,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9956 states to 9956 states and 11664 transitions. [2024-11-27 19:51:06,495 INFO L78 Accepts]: Start accepts. Automaton has 9956 states and 11664 transitions. Word has length 214 [2024-11-27 19:51:06,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:06,495 INFO L471 AbstractCegarLoop]: Abstraction has 9956 states and 11664 transitions. [2024-11-27 19:51:06,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 9956 states and 11664 transitions. [2024-11-27 19:51:06,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2024-11-27 19:51:06,503 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:06,503 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:06,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 19:51:06,505 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:06,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:06,506 INFO L85 PathProgramCache]: Analyzing trace with hash 173331966, now seen corresponding path program 1 times [2024-11-27 19:51:06,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:06,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843691960] [2024-11-27 19:51:06,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:06,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:07,064 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 240 proven. 70 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 19:51:07,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843691960] [2024-11-27 19:51:07,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843691960] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:07,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [866953422] [2024-11-27 19:51:07,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:07,066 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:07,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:07,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:07,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:51:07,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:07,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 19:51:07,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:07,580 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 240 proven. 70 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 19:51:07,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:08,035 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 310 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 19:51:08,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [866953422] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:08,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:51:08,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2024-11-27 19:51:08,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375537460] [2024-11-27 19:51:08,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:08,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:51:08,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:08,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:51:08,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:08,038 INFO L87 Difference]: Start difference. First operand 9956 states and 11664 transitions. Second operand has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:12,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:12,896 INFO L93 Difference]: Finished difference Result 30575 states and 36167 transitions. [2024-11-27 19:51:12,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:51:12,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 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 277 [2024-11-27 19:51:12,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:12,949 INFO L225 Difference]: With dead ends: 30575 [2024-11-27 19:51:12,950 INFO L226 Difference]: Without dead ends: 19763 [2024-11-27 19:51:12,959 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 551 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:51:12,960 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 889 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 734 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 3000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 734 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:12,961 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [889 Valid, 162 Invalid, 3000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [734 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 19:51:12,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19763 states. [2024-11-27 19:51:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19763 to 19760. [2024-11-27 19:51:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19760 states, 19759 states have (on average 1.1599777316665822) internal successors, (22920), 19759 states have internal predecessors, (22920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:13,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19760 states to 19760 states and 22920 transitions. [2024-11-27 19:51:13,357 INFO L78 Accepts]: Start accepts. Automaton has 19760 states and 22920 transitions. Word has length 277 [2024-11-27 19:51:13,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:13,360 INFO L471 AbstractCegarLoop]: Abstraction has 19760 states and 22920 transitions. [2024-11-27 19:51:13,361 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.75) internal successors, (227), 3 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:13,361 INFO L276 IsEmpty]: Start isEmpty. Operand 19760 states and 22920 transitions. [2024-11-27 19:51:13,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2024-11-27 19:51:13,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:13,367 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:13,379 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:51:13,571 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:13,572 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:13,573 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:13,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1525566454, now seen corresponding path program 1 times [2024-11-27 19:51:13,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:13,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053106869] [2024-11-27 19:51:13,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:13,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:13,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 19:51:13,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:13,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053106869] [2024-11-27 19:51:13,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053106869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:13,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:13,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:13,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878498978] [2024-11-27 19:51:13,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:13,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:13,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:13,863 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:13,864 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:13,864 INFO L87 Difference]: Start difference. First operand 19760 states and 22920 transitions. Second operand has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:16,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:16,477 INFO L93 Difference]: Finished difference Result 42909 states and 49989 transitions. [2024-11-27 19:51:16,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:16,478 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 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 290 [2024-11-27 19:51:16,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:16,531 INFO L225 Difference]: With dead ends: 42909 [2024-11-27 19:51:16,532 INFO L226 Difference]: Without dead ends: 23151 [2024-11-27 19:51:16,548 INFO L434 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 [2024-11-27 19:51:16,548 INFO L435 NwaCegarLoop]: 826 mSDtfsCounter, 374 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 220 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 374 SdHoareTripleChecker+Valid, 896 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 220 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:16,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [374 Valid, 896 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [220 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 19:51:16,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23151 states. [2024-11-27 19:51:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23151 to 22725. [2024-11-27 19:51:17,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22725 states, 22724 states have (on average 1.1456169688435134) internal successors, (26033), 22724 states have internal predecessors, (26033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22725 states to 22725 states and 26033 transitions. [2024-11-27 19:51:17,078 INFO L78 Accepts]: Start accepts. Automaton has 22725 states and 26033 transitions. Word has length 290 [2024-11-27 19:51:17,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:17,078 INFO L471 AbstractCegarLoop]: Abstraction has 22725 states and 26033 transitions. [2024-11-27 19:51:17,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 22725 states and 26033 transitions. [2024-11-27 19:51:17,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2024-11-27 19:51:17,086 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:17,087 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:17,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 19:51:17,087 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:17,091 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:17,092 INFO L85 PathProgramCache]: Analyzing trace with hash -162552321, now seen corresponding path program 1 times [2024-11-27 19:51:17,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:17,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173195671] [2024-11-27 19:51:17,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:17,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 295 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-27 19:51:17,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:17,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173195671] [2024-11-27 19:51:17,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173195671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:17,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:17,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:51:17,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392498691] [2024-11-27 19:51:17,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:17,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:51:17,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:17,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:51:17,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:51:17,872 INFO L87 Difference]: Start difference. First operand 22725 states and 26033 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:22,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:22,767 INFO L93 Difference]: Finished difference Result 64237 states and 73654 transitions. [2024-11-27 19:51:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:51:22,768 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 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 313 [2024-11-27 19:51:22,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:22,831 INFO L225 Difference]: With dead ends: 64237 [2024-11-27 19:51:22,831 INFO L226 Difference]: Without dead ends: 38101 [2024-11-27 19:51:22,853 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:51:22,853 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 854 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 2908 mSolverCounterSat, 469 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 469 IncrementalHoareTripleChecker+Valid, 2908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:22,854 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 371 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [469 Valid, 2908 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2024-11-27 19:51:22,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38101 states. [2024-11-27 19:51:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38101 to 37204. [2024-11-27 19:51:23,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37204 states, 37203 states have (on average 1.137462032631777) internal successors, (42317), 37203 states have internal predecessors, (42317), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:23,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37204 states to 37204 states and 42317 transitions. [2024-11-27 19:51:23,538 INFO L78 Accepts]: Start accepts. Automaton has 37204 states and 42317 transitions. Word has length 313 [2024-11-27 19:51:23,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:23,539 INFO L471 AbstractCegarLoop]: Abstraction has 37204 states and 42317 transitions. [2024-11-27 19:51:23,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 4 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:23,539 INFO L276 IsEmpty]: Start isEmpty. Operand 37204 states and 42317 transitions. [2024-11-27 19:51:23,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2024-11-27 19:51:23,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:23,548 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:23,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 19:51:23,548 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:23,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:23,550 INFO L85 PathProgramCache]: Analyzing trace with hash -769673228, now seen corresponding path program 1 times [2024-11-27 19:51:23,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:23,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686691876] [2024-11-27 19:51:23,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:23,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:23,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:23,966 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 326 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 19:51:23,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:23,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686691876] [2024-11-27 19:51:23,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686691876] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:23,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:23,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:23,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301826660] [2024-11-27 19:51:23,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:23,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:23,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:23,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:23,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:23,969 INFO L87 Difference]: Start difference. First operand 37204 states and 42317 transitions. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:26,645 INFO L93 Difference]: Finished difference Result 90182 states and 102746 transitions. [2024-11-27 19:51:26,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:26,646 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 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 328 [2024-11-27 19:51:26,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:26,743 INFO L225 Difference]: With dead ends: 90182 [2024-11-27 19:51:26,744 INFO L226 Difference]: Without dead ends: 51278 [2024-11-27 19:51:26,879 INFO L434 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 [2024-11-27 19:51:26,882 INFO L435 NwaCegarLoop]: 752 mSDtfsCounter, 363 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1227 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 824 SdHoareTripleChecker+Invalid, 1477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:26,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 824 Invalid, 1477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1227 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 19:51:26,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51278 states. [2024-11-27 19:51:27,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51278 to 49991. [2024-11-27 19:51:27,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49991 states, 49990 states have (on average 1.1124624924984996) internal successors, (55612), 49990 states have internal predecessors, (55612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:27,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49991 states to 49991 states and 55612 transitions. [2024-11-27 19:51:27,942 INFO L78 Accepts]: Start accepts. Automaton has 49991 states and 55612 transitions. Word has length 328 [2024-11-27 19:51:27,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:27,942 INFO L471 AbstractCegarLoop]: Abstraction has 49991 states and 55612 transitions. [2024-11-27 19:51:27,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:27,943 INFO L276 IsEmpty]: Start isEmpty. Operand 49991 states and 55612 transitions. [2024-11-27 19:51:27,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2024-11-27 19:51:27,948 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:27,948 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:27,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 19:51:27,949 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:27,949 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:27,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1314932159, now seen corresponding path program 1 times [2024-11-27 19:51:27,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:27,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446151304] [2024-11-27 19:51:27,949 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:27,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:28,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:28,710 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 361 proven. 214 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-27 19:51:28,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:28,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446151304] [2024-11-27 19:51:28,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446151304] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:28,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [965908595] [2024-11-27 19:51:28,710 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:28,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:28,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:28,713 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:28,717 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:51:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:28,915 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 19:51:28,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 381 proven. 73 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-27 19:51:29,224 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:29,620 INFO L134 CoverageAnalysis]: Checked inductivity of 626 backedges. 454 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2024-11-27 19:51:29,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [965908595] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:29,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:51:29,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2024-11-27 19:51:29,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659828273] [2024-11-27 19:51:29,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:29,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:51:29,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:29,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:51:29,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:29,624 INFO L87 Difference]: Start difference. First operand 49991 states and 55612 transitions. Second operand has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:33,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:33,791 INFO L93 Difference]: Finished difference Result 118728 states and 132318 transitions. [2024-11-27 19:51:33,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:51:33,791 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 351 [2024-11-27 19:51:33,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:33,848 INFO L225 Difference]: With dead ends: 118728 [2024-11-27 19:51:33,849 INFO L226 Difference]: Without dead ends: 68739 [2024-11-27 19:51:33,874 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 704 GetRequests, 699 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:51:33,875 INFO L435 NwaCegarLoop]: 86 mSDtfsCounter, 860 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 2356 mSolverCounterSat, 559 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 2915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 559 IncrementalHoareTripleChecker+Valid, 2356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:33,875 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 199 Invalid, 2915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [559 Valid, 2356 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2024-11-27 19:51:33,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68739 states. [2024-11-27 19:51:34,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68739 to 64908. [2024-11-27 19:51:34,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64908 states, 64907 states have (on average 1.1170597932426394) internal successors, (72505), 64907 states have internal predecessors, (72505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64908 states to 64908 states and 72505 transitions. [2024-11-27 19:51:34,706 INFO L78 Accepts]: Start accepts. Automaton has 64908 states and 72505 transitions. Word has length 351 [2024-11-27 19:51:34,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:34,706 INFO L471 AbstractCegarLoop]: Abstraction has 64908 states and 72505 transitions. [2024-11-27 19:51:34,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.0) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:34,707 INFO L276 IsEmpty]: Start isEmpty. Operand 64908 states and 72505 transitions. [2024-11-27 19:51:34,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-27 19:51:34,713 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:34,714 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:34,722 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:51:34,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 19:51:34,914 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:34,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:34,915 INFO L85 PathProgramCache]: Analyzing trace with hash -444093731, now seen corresponding path program 1 times [2024-11-27 19:51:34,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:34,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682092753] [2024-11-27 19:51:34,915 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:34,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-27 19:51:35,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:35,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682092753] [2024-11-27 19:51:35,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682092753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:35,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:35,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:35,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699145940] [2024-11-27 19:51:35,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:35,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:35,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:35,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:35,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:35,428 INFO L87 Difference]: Start difference. First operand 64908 states and 72505 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:38,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:38,195 INFO L93 Difference]: Finished difference Result 142175 states and 159014 transitions. [2024-11-27 19:51:38,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:38,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 365 [2024-11-27 19:51:38,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:38,274 INFO L225 Difference]: With dead ends: 142175 [2024-11-27 19:51:38,274 INFO L226 Difference]: Without dead ends: 76833 [2024-11-27 19:51:38,300 INFO L434 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 [2024-11-27 19:51:38,300 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 470 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 279 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 279 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:38,301 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 301 Invalid, 1548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [279 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 19:51:38,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76833 states. [2024-11-27 19:51:39,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76833 to 73419. [2024-11-27 19:51:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73419 states, 73418 states have (on average 1.1121250919393064) internal successors, (81650), 73418 states have internal predecessors, (81650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:39,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73419 states to 73419 states and 81650 transitions. [2024-11-27 19:51:39,284 INFO L78 Accepts]: Start accepts. Automaton has 73419 states and 81650 transitions. Word has length 365 [2024-11-27 19:51:39,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:39,285 INFO L471 AbstractCegarLoop]: Abstraction has 73419 states and 81650 transitions. [2024-11-27 19:51:39,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:39,286 INFO L276 IsEmpty]: Start isEmpty. Operand 73419 states and 81650 transitions. [2024-11-27 19:51:39,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2024-11-27 19:51:39,293 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:39,293 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:39,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 19:51:39,294 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:39,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:39,295 INFO L85 PathProgramCache]: Analyzing trace with hash -2004060531, now seen corresponding path program 1 times [2024-11-27 19:51:39,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:39,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051055750] [2024-11-27 19:51:39,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:39,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:40,052 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 414 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-27 19:51:40,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:40,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051055750] [2024-11-27 19:51:40,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051055750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:40,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:40,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:40,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526373203] [2024-11-27 19:51:40,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:40,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:40,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:40,054 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:40,054 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:40,054 INFO L87 Difference]: Start difference. First operand 73419 states and 81650 transitions. Second operand has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:42,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:42,809 INFO L93 Difference]: Finished difference Result 163003 states and 181528 transitions. [2024-11-27 19:51:42,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:42,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 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 381 [2024-11-27 19:51:42,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:42,918 INFO L225 Difference]: With dead ends: 163003 [2024-11-27 19:51:42,918 INFO L226 Difference]: Without dead ends: 88309 [2024-11-27 19:51:42,959 INFO L434 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 [2024-11-27 19:51:42,960 INFO L435 NwaCegarLoop]: 762 mSDtfsCounter, 388 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:42,960 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 819 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 19:51:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88309 states. [2024-11-27 19:51:44,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88309 to 72958. [2024-11-27 19:51:44,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72958 states, 72957 states have (on average 1.110955768466357) internal successors, (81052), 72957 states have internal predecessors, (81052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:44,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72958 states to 72958 states and 81052 transitions. [2024-11-27 19:51:44,288 INFO L78 Accepts]: Start accepts. Automaton has 72958 states and 81052 transitions. Word has length 381 [2024-11-27 19:51:44,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:44,289 INFO L471 AbstractCegarLoop]: Abstraction has 72958 states and 81052 transitions. [2024-11-27 19:51:44,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:44,289 INFO L276 IsEmpty]: Start isEmpty. Operand 72958 states and 81052 transitions. [2024-11-27 19:51:44,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2024-11-27 19:51:44,295 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:44,296 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:44,296 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 19:51:44,296 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:44,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:44,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1666713624, now seen corresponding path program 1 times [2024-11-27 19:51:44,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:44,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112952866] [2024-11-27 19:51:44,297 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:44,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:44,945 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 561 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2024-11-27 19:51:44,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:44,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112952866] [2024-11-27 19:51:44,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112952866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:44,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:44,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:44,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294010365] [2024-11-27 19:51:44,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:44,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:44,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:44,949 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:44,949 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:44,949 INFO L87 Difference]: Start difference. First operand 72958 states and 81052 transitions. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:47,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:47,573 INFO L93 Difference]: Finished difference Result 166355 states and 185074 transitions. [2024-11-27 19:51:47,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:47,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 399 [2024-11-27 19:51:47,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:47,664 INFO L225 Difference]: With dead ends: 166355 [2024-11-27 19:51:47,664 INFO L226 Difference]: Without dead ends: 92969 [2024-11-27 19:51:47,696 INFO L434 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 [2024-11-27 19:51:47,696 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 409 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 1457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:47,696 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 362 Invalid, 1457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 19:51:47,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92969 states. [2024-11-27 19:51:48,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92969 to 88271. [2024-11-27 19:51:48,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88271 states, 88270 states have (on average 1.1049280616290926) internal successors, (97532), 88270 states have internal predecessors, (97532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88271 states to 88271 states and 97532 transitions. [2024-11-27 19:51:49,011 INFO L78 Accepts]: Start accepts. Automaton has 88271 states and 97532 transitions. Word has length 399 [2024-11-27 19:51:49,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:49,011 INFO L471 AbstractCegarLoop]: Abstraction has 88271 states and 97532 transitions. [2024-11-27 19:51:49,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:49,012 INFO L276 IsEmpty]: Start isEmpty. Operand 88271 states and 97532 transitions. [2024-11-27 19:51:49,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2024-11-27 19:51:49,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:49,019 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:49,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 19:51:49,019 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:49,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:49,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1497264050, now seen corresponding path program 1 times [2024-11-27 19:51:49,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:49,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676138108] [2024-11-27 19:51:49,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:49,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:49,326 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 447 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2024-11-27 19:51:49,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:49,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676138108] [2024-11-27 19:51:49,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676138108] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:51:49,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:51:49,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:51:49,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059719138] [2024-11-27 19:51:49,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:51:49,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:51:49,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:49,329 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:51:49,329 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:51:49,329 INFO L87 Difference]: Start difference. First operand 88271 states and 97532 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:51,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:51,895 INFO L93 Difference]: Finished difference Result 185045 states and 204010 transitions. [2024-11-27 19:51:51,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:51:51,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 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 403 [2024-11-27 19:51:51,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:51,989 INFO L225 Difference]: With dead ends: 185045 [2024-11-27 19:51:51,990 INFO L226 Difference]: Without dead ends: 96775 [2024-11-27 19:51:52,034 INFO L434 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 [2024-11-27 19:51:52,034 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 388 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:52,034 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 315 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 19:51:52,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96775 states. [2024-11-27 19:51:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96775 to 91669. [2024-11-27 19:51:53,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91669 states, 91668 states have (on average 1.1009076231618449) internal successors, (100918), 91668 states have internal predecessors, (100918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:53,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91669 states to 91669 states and 100918 transitions. [2024-11-27 19:51:53,341 INFO L78 Accepts]: Start accepts. Automaton has 91669 states and 100918 transitions. Word has length 403 [2024-11-27 19:51:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:53,341 INFO L471 AbstractCegarLoop]: Abstraction has 91669 states and 100918 transitions. [2024-11-27 19:51:53,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:51:53,341 INFO L276 IsEmpty]: Start isEmpty. Operand 91669 states and 100918 transitions. [2024-11-27 19:51:53,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2024-11-27 19:51:53,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:53,346 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:53,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 19:51:53,346 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:53,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:53,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1444998463, now seen corresponding path program 1 times [2024-11-27 19:51:53,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:53,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589913702] [2024-11-27 19:51:53,347 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:53,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:54,680 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 367 proven. 51 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2024-11-27 19:51:54,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:54,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589913702] [2024-11-27 19:51:54,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589913702] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:54,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8936855] [2024-11-27 19:51:54,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:51:54,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:54,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:54,683 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:54,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:51:54,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:51:54,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-27 19:51:54,925 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:55,667 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 431 proven. 82 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-27 19:51:55,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:56,851 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 431 proven. 82 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-27 19:51:56,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8936855] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:56,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:56,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2024-11-27 19:51:56,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223575867] [2024-11-27 19:51:56,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:56,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 19:51:56,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:56,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 19:51:56,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-11-27 19:51:56,855 INFO L87 Difference]: Start difference. First operand 91669 states and 100918 transitions. Second operand has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:09,308 INFO L93 Difference]: Finished difference Result 237420 states and 260035 transitions. [2024-11-27 19:52:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 19:52:09,309 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 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 433 [2024-11-27 19:52:09,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:09,484 INFO L225 Difference]: With dead ends: 237420 [2024-11-27 19:52:09,484 INFO L226 Difference]: Without dead ends: 139369 [2024-11-27 19:52:09,533 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 870 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2024-11-27 19:52:09,533 INFO L435 NwaCegarLoop]: 75 mSDtfsCounter, 9066 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 7665 mSolverCounterSat, 2920 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9066 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 10585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2920 IncrementalHoareTripleChecker+Valid, 7665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:09,534 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9066 Valid, 306 Invalid, 10585 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2920 Valid, 7665 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2024-11-27 19:52:09,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139369 states. [2024-11-27 19:52:11,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139369 to 116301. [2024-11-27 19:52:11,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116301 states, 116300 states have (on average 1.0760705073086845) internal successors, (125147), 116300 states have internal predecessors, (125147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116301 states to 116301 states and 125147 transitions. [2024-11-27 19:52:11,211 INFO L78 Accepts]: Start accepts. Automaton has 116301 states and 125147 transitions. Word has length 433 [2024-11-27 19:52:11,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:11,212 INFO L471 AbstractCegarLoop]: Abstraction has 116301 states and 125147 transitions. [2024-11-27 19:52:11,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 83.11111111111111) internal successors, (748), 9 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:11,212 INFO L276 IsEmpty]: Start isEmpty. Operand 116301 states and 125147 transitions. [2024-11-27 19:52:11,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2024-11-27 19:52:11,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:11,219 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:11,231 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 19:52:11,419 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-27 19:52:11,420 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:11,420 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -273409696, now seen corresponding path program 1 times [2024-11-27 19:52:11,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:11,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708942275] [2024-11-27 19:52:11,421 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:11,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 473 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2024-11-27 19:52:12,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:12,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708942275] [2024-11-27 19:52:12,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708942275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:12,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:52:12,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:52:12,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099456775] [2024-11-27 19:52:12,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:12,034 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:52:12,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:12,035 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:52:12,035 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:52:12,035 INFO L87 Difference]: Start difference. First operand 116301 states and 125147 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:14,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:14,729 INFO L93 Difference]: Finished difference Result 235578 states and 253447 transitions. [2024-11-27 19:52:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:52:14,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 498 [2024-11-27 19:52:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:14,848 INFO L225 Difference]: With dead ends: 235578 [2024-11-27 19:52:14,849 INFO L226 Difference]: Without dead ends: 119279 [2024-11-27 19:52:14,890 INFO L434 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 [2024-11-27 19:52:14,891 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 366 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1189 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 1189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:14,891 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 325 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 1189 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 19:52:14,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119279 states. [2024-11-27 19:52:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119279 to 108205. [2024-11-27 19:52:16,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108205 states, 108204 states have (on average 1.0754593175853018) internal successors, (116369), 108204 states have internal predecessors, (116369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:16,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108205 states to 108205 states and 116369 transitions. [2024-11-27 19:52:16,322 INFO L78 Accepts]: Start accepts. Automaton has 108205 states and 116369 transitions. Word has length 498 [2024-11-27 19:52:16,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:16,323 INFO L471 AbstractCegarLoop]: Abstraction has 108205 states and 116369 transitions. [2024-11-27 19:52:16,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:16,323 INFO L276 IsEmpty]: Start isEmpty. Operand 108205 states and 116369 transitions. [2024-11-27 19:52:16,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 512 [2024-11-27 19:52:16,332 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:16,332 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:16,332 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 19:52:16,332 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:16,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:16,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1456772986, now seen corresponding path program 1 times [2024-11-27 19:52:16,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:16,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818153311] [2024-11-27 19:52:16,333 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:16,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:17,291 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 265 proven. 51 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 19:52:17,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:17,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818153311] [2024-11-27 19:52:17,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818153311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:52:17,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643065956] [2024-11-27 19:52:17,292 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:17,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:52:17,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:52:17,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:52:17,298 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:52:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:17,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:52:17,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:52:17,999 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 265 proven. 51 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 19:52:17,999 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:52:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 265 proven. 51 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-27 19:52:20,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643065956] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:52:20,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:52:20,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2024-11-27 19:52:20,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826870152] [2024-11-27 19:52:20,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:52:20,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 19:52:20,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:20,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 19:52:20,699 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-27 19:52:20,699 INFO L87 Difference]: Start difference. First operand 108205 states and 116369 transitions. Second operand has 8 states, 8 states have (on average 140.125) internal successors, (1121), 8 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:31,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:31,044 INFO L93 Difference]: Finished difference Result 260725 states and 279430 transitions. [2024-11-27 19:52:31,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 19:52:31,044 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 140.125) internal successors, (1121), 8 states have internal predecessors, (1121), 0 states have call successors, (0), 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 511 [2024-11-27 19:52:31,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:31,192 INFO L225 Difference]: With dead ends: 260725 [2024-11-27 19:52:31,192 INFO L226 Difference]: Without dead ends: 150394 [2024-11-27 19:52:31,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1032 GetRequests, 1022 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-27 19:52:31,230 INFO L435 NwaCegarLoop]: 74 mSDtfsCounter, 2433 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 7451 mSolverCounterSat, 1761 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 9212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1761 IncrementalHoareTripleChecker+Valid, 7451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:31,230 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 285 Invalid, 9212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1761 Valid, 7451 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2024-11-27 19:52:31,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150394 states. [2024-11-27 19:52:32,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150394 to 118839. [2024-11-27 19:52:32,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118839 states, 118838 states have (on average 1.0636244298961612) internal successors, (126399), 118838 states have internal predecessors, (126399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:33,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118839 states to 118839 states and 126399 transitions. [2024-11-27 19:52:33,102 INFO L78 Accepts]: Start accepts. Automaton has 118839 states and 126399 transitions. Word has length 511 [2024-11-27 19:52:33,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:33,103 INFO L471 AbstractCegarLoop]: Abstraction has 118839 states and 126399 transitions. [2024-11-27 19:52:33,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 140.125) internal successors, (1121), 8 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:33,103 INFO L276 IsEmpty]: Start isEmpty. Operand 118839 states and 126399 transitions. [2024-11-27 19:52:33,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2024-11-27 19:52:33,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:33,115 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:33,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-27 19:52:33,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ceadbd0-c360-4da1-9021-020b0a844570/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-27 19:52:33,316 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:33,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:33,317 INFO L85 PathProgramCache]: Analyzing trace with hash -2110531290, now seen corresponding path program 1 times [2024-11-27 19:52:33,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:33,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976125093] [2024-11-27 19:52:33,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:33,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:33,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:33,939 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 328 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-27 19:52:33,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:33,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976125093] [2024-11-27 19:52:33,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976125093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:33,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:52:33,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:52:33,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222364854] [2024-11-27 19:52:33,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:33,943 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:52:33,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:33,944 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:52:33,944 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:52:33,944 INFO L87 Difference]: Start difference. First operand 118839 states and 126399 transitions. Second operand has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:37,390 INFO L93 Difference]: Finished difference Result 248758 states and 264552 transitions. [2024-11-27 19:52:37,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:52:37,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 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 544 [2024-11-27 19:52:37,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:37,515 INFO L225 Difference]: With dead ends: 248758 [2024-11-27 19:52:37,515 INFO L226 Difference]: Without dead ends: 129921 [2024-11-27 19:52:37,568 INFO L434 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 [2024-11-27 19:52:37,568 INFO L435 NwaCegarLoop]: 228 mSDtfsCounter, 408 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 1441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:37,568 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [408 Valid, 271 Invalid, 1441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1247 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 19:52:37,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129921 states. [2024-11-27 19:52:39,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129921 to 128623. [2024-11-27 19:52:39,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128623 states, 128622 states have (on average 1.0617001757086657) internal successors, (136558), 128622 states have internal predecessors, (136558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128623 states to 128623 states and 136558 transitions. [2024-11-27 19:52:39,451 INFO L78 Accepts]: Start accepts. Automaton has 128623 states and 136558 transitions. Word has length 544 [2024-11-27 19:52:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:39,452 INFO L471 AbstractCegarLoop]: Abstraction has 128623 states and 136558 transitions. [2024-11-27 19:52:39,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 128623 states and 136558 transitions. [2024-11-27 19:52:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2024-11-27 19:52:39,461 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:39,461 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:39,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 19:52:39,462 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:39,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1550554275, now seen corresponding path program 1 times [2024-11-27 19:52:39,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:39,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006931144] [2024-11-27 19:52:39,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:39,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2024-11-27 19:52:39,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:39,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006931144] [2024-11-27 19:52:39,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006931144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:39,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:52:39,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:52:39,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523899012] [2024-11-27 19:52:39,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:39,757 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:52:39,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:39,758 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:52:39,758 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:52:39,758 INFO L87 Difference]: Start difference. First operand 128623 states and 136558 transitions. Second operand has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:42,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:42,622 INFO L93 Difference]: Finished difference Result 251702 states and 267146 transitions. [2024-11-27 19:52:42,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:52:42,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 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 577 [2024-11-27 19:52:42,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:42,762 INFO L225 Difference]: With dead ends: 251702 [2024-11-27 19:52:42,762 INFO L226 Difference]: Without dead ends: 123506 [2024-11-27 19:52:42,826 INFO L434 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 [2024-11-27 19:52:42,826 INFO L435 NwaCegarLoop]: 649 mSDtfsCounter, 442 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 1284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:42,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 704 Invalid, 1284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 19:52:42,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123506 states. [2024-11-27 19:52:44,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123506 to 119245. [2024-11-27 19:52:44,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119245 states, 119244 states have (on average 1.052463855623763) internal successors, (125500), 119244 states have internal predecessors, (125500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:45,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119245 states to 119245 states and 125500 transitions. [2024-11-27 19:52:45,269 INFO L78 Accepts]: Start accepts. Automaton has 119245 states and 125500 transitions. Word has length 577 [2024-11-27 19:52:45,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:52:45,270 INFO L471 AbstractCegarLoop]: Abstraction has 119245 states and 125500 transitions. [2024-11-27 19:52:45,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:45,270 INFO L276 IsEmpty]: Start isEmpty. Operand 119245 states and 125500 transitions. [2024-11-27 19:52:45,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2024-11-27 19:52:45,281 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:52:45,281 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:52:45,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 19:52:45,281 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:52:45,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:52:45,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1184107234, now seen corresponding path program 1 times [2024-11-27 19:52:45,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:52:45,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734697129] [2024-11-27 19:52:45,282 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:52:45,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:52:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:52:45,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1051 backedges. 822 proven. 0 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2024-11-27 19:52:45,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:52:45,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734697129] [2024-11-27 19:52:45,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734697129] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:52:45,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:52:45,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 19:52:45,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566290637] [2024-11-27 19:52:45,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:52:45,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 19:52:45,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:52:45,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 19:52:45,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:52:45,790 INFO L87 Difference]: Start difference. First operand 119245 states and 125500 transitions. Second operand has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 19:52:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:52:50,136 INFO L93 Difference]: Finished difference Result 262331 states and 275757 transitions. [2024-11-27 19:52:50,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 19:52:50,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 109.75) internal successors, (439), 4 states have internal predecessors, (439), 0 states have call successors, (0), 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 593 [2024-11-27 19:52:50,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:52:50,263 INFO L225 Difference]: With dead ends: 262331 [2024-11-27 19:52:50,263 INFO L226 Difference]: Without dead ends: 143513 [2024-11-27 19:52:50,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 19:52:50,313 INFO L435 NwaCegarLoop]: 139 mSDtfsCounter, 728 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 2397 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:52:50,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 232 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2397 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2024-11-27 19:52:50,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143513 states. [2024-11-27 19:52:52,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143513 to 137554. [2024-11-27 19:52:52,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137554 states, 137553 states have (on average 1.0493773309197183) internal successors, (144345), 137553 states have internal predecessors, (144345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)