./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/token_ring.06.cil-1.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_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/systemc/token_ring.06.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1 --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 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:56:02,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:56:02,892 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:56:02,898 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:56:02,898 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:56:02,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:56:02,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:56:02,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:56:02,923 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:56:02,923 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:56:02,923 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:56:02,923 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:56:02,924 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:56:02,924 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:56:02,924 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:56:02,924 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:56:02,924 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:56:02,924 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:56:02,924 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:56:02,924 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:56:02,925 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:56:02,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:56:02,926 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:56:02,926 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:56:02,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:56:02,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:56:02,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:56:02,927 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:56:02,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:56:02,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:56:02,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:56:02,927 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_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1 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 -> 4ff0d99c6257365cafb7459615c8e1194d53bcc0d71dc100705abd4bb2d65c37 [2024-12-02 14:56:03,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:56:03,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:56:03,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:56:03,185 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:56:03,185 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:56:03,186 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2024-12-02 14:56:05,842 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/data/1705795bc/d19cea9216434556bb4c64291766a283/FLAG076f299fb [2024-12-02 14:56:06,057 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:56:06,058 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/sv-benchmarks/c/systemc/token_ring.06.cil-1.c [2024-12-02 14:56:06,068 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/data/1705795bc/d19cea9216434556bb4c64291766a283/FLAG076f299fb [2024-12-02 14:56:06,418 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/data/1705795bc/d19cea9216434556bb4c64291766a283 [2024-12-02 14:56:06,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:56:06,422 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:56:06,423 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:56:06,423 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:56:06,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:56:06,427 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b29735a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06, skipping insertion in model container [2024-12-02 14:56:06,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,458 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:56:06,569 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_941702eb-535b-43f8-81b2-fab2c380d9a9/sv-benchmarks/c/systemc/token_ring.06.cil-1.c[671,684] [2024-12-02 14:56:06,663 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:56:06,673 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:56:06,681 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_941702eb-535b-43f8-81b2-fab2c380d9a9/sv-benchmarks/c/systemc/token_ring.06.cil-1.c[671,684] [2024-12-02 14:56:06,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:56:06,748 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:56:06,748 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06 WrapperNode [2024-12-02 14:56:06,748 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:56:06,749 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:56:06,749 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:56:06,749 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:56:06,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,764 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,793 INFO L138 Inliner]: procedures = 40, calls = 50, calls flagged for inlining = 23, calls inlined = 23, statements flattened = 516 [2024-12-02 14:56:06,793 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:56:06,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:56:06,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:56:06,794 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:56:06,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,807 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,822 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]. [2024-12-02 14:56:06,823 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,823 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,831 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,833 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,842 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,844 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,850 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:56:06,851 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:56:06,851 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:56:06,851 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:56:06,852 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (1/1) ... [2024-12-02 14:56:06,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:56:06,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:56:06,881 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:56:06,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_941702eb-535b-43f8-81b2-fab2c380d9a9/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:56:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:56:06,908 INFO L130 BoogieDeclarations]: Found specification of procedure error [2024-12-02 14:56:06,908 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2024-12-02 14:56:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2024-12-02 14:56:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2024-12-02 14:56:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2024-12-02 14:56:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2024-12-02 14:56:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-12-02 14:56:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-12-02 14:56:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2024-12-02 14:56:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2024-12-02 14:56:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2024-12-02 14:56:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2024-12-02 14:56:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:56:06,909 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2024-12-02 14:56:06,910 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2024-12-02 14:56:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:56:06,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:56:06,996 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:56:06,998 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:56:07,560 INFO L? ?]: Removed 65 outVars from TransFormulas that were not future-live. [2024-12-02 14:56:07,560 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:56:07,577 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:56:07,577 INFO L312 CfgBuilder]: Removed 18 assume(true) statements. [2024-12-02 14:56:07,578 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:07 BoogieIcfgContainer [2024-12-02 14:56:07,578 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:56:07,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:56:07,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:56:07,587 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:56:07,587 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:56:06" (1/3) ... [2024-12-02 14:56:07,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd78821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:56:07, skipping insertion in model container [2024-12-02 14:56:07,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:56:06" (2/3) ... [2024-12-02 14:56:07,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd78821 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:56:07, skipping insertion in model container [2024-12-02 14:56:07,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:56:07" (3/3) ... [2024-12-02 14:56:07,589 INFO L128 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-1.c [2024-12-02 14:56:07,617 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:56:07,619 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG token_ring.06.cil-1.c that has 8 procedures, 238 locations, 1 initial locations, 9 loop locations, and 1 error locations. [2024-12-02 14:56:07,681 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:56:07,691 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;@5725974e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:56:07,691 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:56:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand has 238 states, 208 states have (on average 1.6394230769230769) internal successors, (341), 211 states have internal predecessors, (341), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 14:56:07,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:07,708 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:07,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:07,709 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:07,714 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:07,715 INFO L85 PathProgramCache]: Analyzing trace with hash 502261020, now seen corresponding path program 1 times [2024-12-02 14:56:07,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:07,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308226518] [2024-12-02 14:56:07,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:07,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:08,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:08,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:08,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308226518] [2024-12-02 14:56:08,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308226518] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:08,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:08,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:56:08,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820268981] [2024-12-02 14:56:08,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:08,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:56:08,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:08,031 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:56:08,031 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:56:08,034 INFO L87 Difference]: Start difference. First operand has 238 states, 208 states have (on average 1.6394230769230769) internal successors, (341), 211 states have internal predecessors, (341), 22 states have call successors, (22), 7 states have call predecessors, (22), 7 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:08,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:08,104 INFO L93 Difference]: Finished difference Result 468 states and 761 transitions. [2024-12-02 14:56:08,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:56:08,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:08,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:08,116 INFO L225 Difference]: With dead ends: 468 [2024-12-02 14:56:08,117 INFO L226 Difference]: Without dead ends: 232 [2024-12-02 14:56:08,121 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 [2024-12-02 14:56:08,124 INFO L435 NwaCegarLoop]: 361 mSDtfsCounter, 357 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:08,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 361 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:56:08,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2024-12-02 14:56:08,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2024-12-02 14:56:08,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 203 states have (on average 1.5566502463054188) internal successors, (316), 205 states have internal predecessors, (316), 22 states have call successors, (22), 7 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-12-02 14:56:08,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 358 transitions. [2024-12-02 14:56:08,180 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 358 transitions. Word has length 110 [2024-12-02 14:56:08,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:08,182 INFO L471 AbstractCegarLoop]: Abstraction has 232 states and 358 transitions. [2024-12-02 14:56:08,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:08,182 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 358 transitions. [2024-12-02 14:56:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:08,185 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:08,185 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:08,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:56:08,186 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:08,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:08,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1759312230, now seen corresponding path program 1 times [2024-12-02 14:56:08,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:08,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432131448] [2024-12-02 14:56:08,187 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:08,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:08,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:08,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:08,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:08,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432131448] [2024-12-02 14:56:08,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432131448] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:08,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:08,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:56:08,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618051613] [2024-12-02 14:56:08,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:08,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:56:08,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:08,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:56:08,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:56:08,433 INFO L87 Difference]: Start difference. First operand 232 states and 358 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:09,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:09,023 INFO L93 Difference]: Finished difference Result 692 states and 1080 transitions. [2024-12-02 14:56:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:56:09,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:09,029 INFO L225 Difference]: With dead ends: 692 [2024-12-02 14:56:09,029 INFO L226 Difference]: Without dead ends: 474 [2024-12-02 14:56:09,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:09,032 INFO L435 NwaCegarLoop]: 278 mSDtfsCounter, 653 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:09,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [667 Valid, 975 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:56:09,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2024-12-02 14:56:09,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 455. [2024-12-02 14:56:09,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 404 states have (on average 1.5693069306930694) internal successors, (634), 407 states have internal predecessors, (634), 37 states have call successors, (37), 13 states have call predecessors, (37), 13 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2024-12-02 14:56:09,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 707 transitions. [2024-12-02 14:56:09,077 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 707 transitions. Word has length 110 [2024-12-02 14:56:09,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:09,077 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 707 transitions. [2024-12-02 14:56:09,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:09,077 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 707 transitions. [2024-12-02 14:56:09,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:09,079 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:09,080 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:09,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:56:09,080 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:09,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1191439766, now seen corresponding path program 1 times [2024-12-02 14:56:09,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:09,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619380303] [2024-12-02 14:56:09,081 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:09,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:09,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:09,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619380303] [2024-12-02 14:56:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619380303] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:09,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:09,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671373674] [2024-12-02 14:56:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:09,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:09,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:09,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:09,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:09,298 INFO L87 Difference]: Start difference. First operand 455 states and 707 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:10,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:10,066 INFO L93 Difference]: Finished difference Result 1179 states and 1851 transitions. [2024-12-02 14:56:10,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:10,066 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:10,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:10,071 INFO L225 Difference]: With dead ends: 1179 [2024-12-02 14:56:10,071 INFO L226 Difference]: Without dead ends: 738 [2024-12-02 14:56:10,073 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:10,074 INFO L435 NwaCegarLoop]: 466 mSDtfsCounter, 650 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:10,074 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1863 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:56:10,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2024-12-02 14:56:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 663. [2024-12-02 14:56:10,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 590 states have (on average 1.5627118644067797) internal successors, (922), 594 states have internal predecessors, (922), 52 states have call successors, (52), 19 states have call predecessors, (52), 20 states have return successors, (54), 51 states have call predecessors, (54), 50 states have call successors, (54) [2024-12-02 14:56:10,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 1028 transitions. [2024-12-02 14:56:10,125 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 1028 transitions. Word has length 110 [2024-12-02 14:56:10,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:10,125 INFO L471 AbstractCegarLoop]: Abstraction has 663 states and 1028 transitions. [2024-12-02 14:56:10,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:10,126 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 1028 transitions. [2024-12-02 14:56:10,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:10,128 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:10,128 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:10,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:56:10,128 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:10,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:10,129 INFO L85 PathProgramCache]: Analyzing trace with hash 307930776, now seen corresponding path program 1 times [2024-12-02 14:56:10,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:10,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478247465] [2024-12-02 14:56:10,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:10,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:10,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:10,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:10,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478247465] [2024-12-02 14:56:10,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478247465] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:10,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:10,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:10,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914404811] [2024-12-02 14:56:10,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:10,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:10,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:10,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:10,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:10,352 INFO L87 Difference]: Start difference. First operand 663 states and 1028 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:11,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:11,025 INFO L93 Difference]: Finished difference Result 1837 states and 2881 transitions. [2024-12-02 14:56:11,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:11,026 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:11,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:11,035 INFO L225 Difference]: With dead ends: 1837 [2024-12-02 14:56:11,035 INFO L226 Difference]: Without dead ends: 1188 [2024-12-02 14:56:11,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:11,039 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 666 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 680 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:11,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [680 Valid, 1294 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:56:11,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2024-12-02 14:56:11,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1104. [2024-12-02 14:56:11,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1104 states, 985 states have (on average 1.5644670050761422) internal successors, (1541), 993 states have internal predecessors, (1541), 82 states have call successors, (82), 31 states have call predecessors, (82), 36 states have return successors, (96), 83 states have call predecessors, (96), 80 states have call successors, (96) [2024-12-02 14:56:11,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1719 transitions. [2024-12-02 14:56:11,154 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1719 transitions. Word has length 110 [2024-12-02 14:56:11,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:11,155 INFO L471 AbstractCegarLoop]: Abstraction has 1104 states and 1719 transitions. [2024-12-02 14:56:11,155 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:11,155 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1719 transitions. [2024-12-02 14:56:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:11,158 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:11,158 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:11,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:56:11,159 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:11,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:11,159 INFO L85 PathProgramCache]: Analyzing trace with hash 279430486, now seen corresponding path program 1 times [2024-12-02 14:56:11,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:11,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022522498] [2024-12-02 14:56:11,159 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:11,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:11,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:11,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:11,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022522498] [2024-12-02 14:56:11,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022522498] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:11,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:11,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:11,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781014288] [2024-12-02 14:56:11,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:11,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:11,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:11,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:11,372 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:11,372 INFO L87 Difference]: Start difference. First operand 1104 states and 1719 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:12,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:12,112 INFO L93 Difference]: Finished difference Result 3232 states and 5102 transitions. [2024-12-02 14:56:12,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:12,112 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:12,124 INFO L225 Difference]: With dead ends: 3232 [2024-12-02 14:56:12,124 INFO L226 Difference]: Without dead ends: 2142 [2024-12-02 14:56:12,127 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:12,128 INFO L435 NwaCegarLoop]: 455 mSDtfsCounter, 637 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:12,128 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [651 Valid, 1821 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:56:12,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2024-12-02 14:56:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 2046. [2024-12-02 14:56:12,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2046 states, 1829 states have (on average 1.5740841990158556) internal successors, (2879), 1851 states have internal predecessors, (2879), 142 states have call successors, (142), 55 states have call predecessors, (142), 74 states have return successors, (204), 147 states have call predecessors, (204), 140 states have call successors, (204) [2024-12-02 14:56:12,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2046 states to 2046 states and 3225 transitions. [2024-12-02 14:56:12,255 INFO L78 Accepts]: Start accepts. Automaton has 2046 states and 3225 transitions. Word has length 110 [2024-12-02 14:56:12,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:12,256 INFO L471 AbstractCegarLoop]: Abstraction has 2046 states and 3225 transitions. [2024-12-02 14:56:12,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:12,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2046 states and 3225 transitions. [2024-12-02 14:56:12,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:12,258 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:12,258 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:12,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:56:12,259 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:12,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:12,259 INFO L85 PathProgramCache]: Analyzing trace with hash -2138473580, now seen corresponding path program 1 times [2024-12-02 14:56:12,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:12,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419375434] [2024-12-02 14:56:12,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:12,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:12,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:12,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:12,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:12,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419375434] [2024-12-02 14:56:12,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419375434] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:12,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:12,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:12,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831783569] [2024-12-02 14:56:12,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:12,403 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:12,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:12,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:12,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:12,404 INFO L87 Difference]: Start difference. First operand 2046 states and 3225 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:13,160 INFO L93 Difference]: Finished difference Result 6262 states and 10066 transitions. [2024-12-02 14:56:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:13,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:13,183 INFO L225 Difference]: With dead ends: 6262 [2024-12-02 14:56:13,183 INFO L226 Difference]: Without dead ends: 4230 [2024-12-02 14:56:13,190 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:13,191 INFO L435 NwaCegarLoop]: 452 mSDtfsCounter, 632 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:13,191 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 1809 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:56:13,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4230 states. [2024-12-02 14:56:13,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4230 to 4101. [2024-12-02 14:56:13,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 3670 states have (on average 1.5910081743869209) internal successors, (5839), 3738 states have internal predecessors, (5839), 262 states have call successors, (262), 103 states have call predecessors, (262), 168 states have return successors, (516), 275 states have call predecessors, (516), 260 states have call successors, (516) [2024-12-02 14:56:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 6617 transitions. [2024-12-02 14:56:13,457 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 6617 transitions. Word has length 110 [2024-12-02 14:56:13,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:13,458 INFO L471 AbstractCegarLoop]: Abstraction has 4101 states and 6617 transitions. [2024-12-02 14:56:13,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:13,458 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 6617 transitions. [2024-12-02 14:56:13,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:13,462 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:13,462 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:13,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:56:13,463 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:13,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:13,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1385760150, now seen corresponding path program 1 times [2024-12-02 14:56:13,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:13,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211474933] [2024-12-02 14:56:13,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:13,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:13,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:13,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211474933] [2024-12-02 14:56:13,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211474933] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:13,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:13,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:13,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322941610] [2024-12-02 14:56:13,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:13,607 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:13,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:13,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:13,608 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:13,608 INFO L87 Difference]: Start difference. First operand 4101 states and 6617 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:14,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:14,421 INFO L93 Difference]: Finished difference Result 12947 states and 21496 transitions. [2024-12-02 14:56:14,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:14,422 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:14,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:14,454 INFO L225 Difference]: With dead ends: 12947 [2024-12-02 14:56:14,455 INFO L226 Difference]: Without dead ends: 8860 [2024-12-02 14:56:14,465 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:14,465 INFO L435 NwaCegarLoop]: 449 mSDtfsCounter, 627 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:14,466 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1797 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 14:56:14,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8860 states. [2024-12-02 14:56:14,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8860 to 8670. [2024-12-02 14:56:14,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8670 states, 7757 states have (on average 1.6123501353616088) internal successors, (12507), 7971 states have internal predecessors, (12507), 502 states have call successors, (502), 199 states have call predecessors, (502), 410 states have return successors, (1524), 531 states have call predecessors, (1524), 500 states have call successors, (1524) [2024-12-02 14:56:15,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8670 states to 8670 states and 14533 transitions. [2024-12-02 14:56:15,010 INFO L78 Accepts]: Start accepts. Automaton has 8670 states and 14533 transitions. Word has length 110 [2024-12-02 14:56:15,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:15,010 INFO L471 AbstractCegarLoop]: Abstraction has 8670 states and 14533 transitions. [2024-12-02 14:56:15,010 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:15,011 INFO L276 IsEmpty]: Start isEmpty. Operand 8670 states and 14533 transitions. [2024-12-02 14:56:15,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:15,018 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:15,018 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:15,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:56:15,018 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:15,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:15,019 INFO L85 PathProgramCache]: Analyzing trace with hash 391066452, now seen corresponding path program 1 times [2024-12-02 14:56:15,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:15,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387534948] [2024-12-02 14:56:15,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:15,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:15,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:15,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:15,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387534948] [2024-12-02 14:56:15,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387534948] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:15,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:15,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:15,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530220611] [2024-12-02 14:56:15,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:15,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:15,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:15,148 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:15,148 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:15,148 INFO L87 Difference]: Start difference. First operand 8670 states and 14533 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:16,700 INFO L93 Difference]: Finished difference Result 29482 states and 51199 transitions. [2024-12-02 14:56:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:16,700 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:16,817 INFO L225 Difference]: With dead ends: 29482 [2024-12-02 14:56:16,817 INFO L226 Difference]: Without dead ends: 20826 [2024-12-02 14:56:16,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:16,849 INFO L435 NwaCegarLoop]: 444 mSDtfsCounter, 816 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 1772 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:16,849 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [837 Valid, 1772 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:56:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20826 states. [2024-12-02 14:56:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20826 to 18927. [2024-12-02 14:56:17,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18927 states, 16920 states have (on average 1.6375295508274232) internal successors, (27707), 17588 states have internal predecessors, (27707), 950 states have call successors, (950), 391 states have call predecessors, (950), 1056 states have return successors, (5044), 1011 states have call predecessors, (5044), 948 states have call successors, (5044) [2024-12-02 14:56:17,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18927 states to 18927 states and 33701 transitions. [2024-12-02 14:56:17,827 INFO L78 Accepts]: Start accepts. Automaton has 18927 states and 33701 transitions. Word has length 110 [2024-12-02 14:56:17,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:17,827 INFO L471 AbstractCegarLoop]: Abstraction has 18927 states and 33701 transitions. [2024-12-02 14:56:17,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:17,828 INFO L276 IsEmpty]: Start isEmpty. Operand 18927 states and 33701 transitions. [2024-12-02 14:56:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:17,837 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:17,837 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:17,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:56:17,837 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:17,838 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:17,838 INFO L85 PathProgramCache]: Analyzing trace with hash -195209770, now seen corresponding path program 1 times [2024-12-02 14:56:17,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:17,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717275985] [2024-12-02 14:56:17,838 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:17,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:17,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:17,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:17,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717275985] [2024-12-02 14:56:17,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717275985] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:17,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:17,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:17,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942630568] [2024-12-02 14:56:17,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:17,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:17,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:17,935 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:17,935 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:17,936 INFO L87 Difference]: Start difference. First operand 18927 states and 33701 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:20,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:20,193 INFO L93 Difference]: Finished difference Result 64593 states and 121589 transitions. [2024-12-02 14:56:20,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:20,368 INFO L225 Difference]: With dead ends: 64593 [2024-12-02 14:56:20,368 INFO L226 Difference]: Without dead ends: 45680 [2024-12-02 14:56:20,421 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:20,421 INFO L435 NwaCegarLoop]: 440 mSDtfsCounter, 669 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:20,422 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 1756 Invalid, 880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:56:20,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45680 states. [2024-12-02 14:56:22,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45680 to 41928. [2024-12-02 14:56:22,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41928 states, 37279 states have (on average 1.6573137691461681) internal successors, (61783), 39341 states have internal predecessors, (61783), 1814 states have call successors, (1814), 775 states have call predecessors, (1814), 2834 states have return successors, (18196), 1939 states have call predecessors, (18196), 1812 states have call successors, (18196) [2024-12-02 14:56:22,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41928 states to 41928 states and 81793 transitions. [2024-12-02 14:56:22,607 INFO L78 Accepts]: Start accepts. Automaton has 41928 states and 81793 transitions. Word has length 110 [2024-12-02 14:56:22,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:22,608 INFO L471 AbstractCegarLoop]: Abstraction has 41928 states and 81793 transitions. [2024-12-02 14:56:22,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:22,608 INFO L276 IsEmpty]: Start isEmpty. Operand 41928 states and 81793 transitions. [2024-12-02 14:56:22,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:22,637 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:22,637 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:22,637 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:56:22,638 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:22,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:22,638 INFO L85 PathProgramCache]: Analyzing trace with hash 2141182740, now seen corresponding path program 1 times [2024-12-02 14:56:22,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:22,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849637462] [2024-12-02 14:56:22,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:22,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:22,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:22,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:22,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:22,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849637462] [2024-12-02 14:56:22,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849637462] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:22,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:22,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:22,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771935082] [2024-12-02 14:56:22,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:22,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:22,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:22,819 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:22,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:22,820 INFO L87 Difference]: Start difference. First operand 41928 states and 81793 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:26,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:26,319 INFO L93 Difference]: Finished difference Result 143660 states and 305267 transitions. [2024-12-02 14:56:26,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:26,320 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:26,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:26,738 INFO L225 Difference]: With dead ends: 143660 [2024-12-02 14:56:26,738 INFO L226 Difference]: Without dead ends: 101746 [2024-12-02 14:56:26,863 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:26,864 INFO L435 NwaCegarLoop]: 438 mSDtfsCounter, 746 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1748 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:26,864 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1748 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:56:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101746 states. [2024-12-02 14:56:32,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101746 to 96333. [2024-12-02 14:56:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96333 states, 85006 states have (on average 1.676293438110251) internal successors, (142495), 91314 states have internal predecessors, (142495), 3478 states have call successors, (3478), 1543 states have call predecessors, (3478), 7848 states have return successors, (69012), 3731 states have call predecessors, (69012), 3476 states have call successors, (69012) [2024-12-02 14:56:32,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96333 states to 96333 states and 214985 transitions. [2024-12-02 14:56:33,012 INFO L78 Accepts]: Start accepts. Automaton has 96333 states and 214985 transitions. Word has length 110 [2024-12-02 14:56:33,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:56:33,013 INFO L471 AbstractCegarLoop]: Abstraction has 96333 states and 214985 transitions. [2024-12-02 14:56:33,013 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:33,013 INFO L276 IsEmpty]: Start isEmpty. Operand 96333 states and 214985 transitions. [2024-12-02 14:56:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:56:33,043 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:56:33,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:56:33,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:56:33,043 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:56:33,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:56:33,044 INFO L85 PathProgramCache]: Analyzing trace with hash -277301738, now seen corresponding path program 1 times [2024-12-02 14:56:33,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:56:33,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315305562] [2024-12-02 14:56:33,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:56:33,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:56:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:56:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:56:33,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:56:33,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315305562] [2024-12-02 14:56:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315305562] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:56:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:56:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:56:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582087630] [2024-12-02 14:56:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:56:33,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:56:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:56:33,175 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:56:33,175 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:56:33,175 INFO L87 Difference]: Start difference. First operand 96333 states and 214985 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:56:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:56:41,351 INFO L93 Difference]: Finished difference Result 329499 states and 833993 transitions. [2024-12-02 14:56:41,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:56:41,352 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:56:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:56:42,831 INFO L225 Difference]: With dead ends: 329499 [2024-12-02 14:56:42,831 INFO L226 Difference]: Without dead ends: 233180 [2024-12-02 14:56:43,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:56:43,140 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 747 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 14:56:43,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1225 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 14:56:43,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233180 states. [2024-12-02 14:57:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233180 to 224442. [2024-12-02 14:57:00,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224442 states, 195513 states have (on average 1.6867369433234618) internal successors, (329779), 214687 states have internal predecessors, (329779), 6678 states have call successors, (6678), 3079 states have call predecessors, (6678), 22250 states have return successors, (268820), 7187 states have call predecessors, (268820), 6676 states have call successors, (268820) [2024-12-02 14:57:02,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224442 states to 224442 states and 605277 transitions. [2024-12-02 14:57:02,982 INFO L78 Accepts]: Start accepts. Automaton has 224442 states and 605277 transitions. Word has length 110 [2024-12-02 14:57:02,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:57:02,982 INFO L471 AbstractCegarLoop]: Abstraction has 224442 states and 605277 transitions. [2024-12-02 14:57:02,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:57:02,982 INFO L276 IsEmpty]: Start isEmpty. Operand 224442 states and 605277 transitions. [2024-12-02 14:57:03,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-12-02 14:57:03,029 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:57:03,029 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:57:03,029 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:57:03,029 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:57:03,029 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:57:03,029 INFO L85 PathProgramCache]: Analyzing trace with hash 2138534612, now seen corresponding path program 1 times [2024-12-02 14:57:03,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:57:03,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574628290] [2024-12-02 14:57:03,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:57:03,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:57:03,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:57:03,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:57:03,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:57:03,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574628290] [2024-12-02 14:57:03,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574628290] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:57:03,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:57:03,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:57:03,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409800840] [2024-12-02 14:57:03,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:57:03,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:57:03,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:57:03,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:57:03,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:57:03,407 INFO L87 Difference]: Start difference. First operand 224442 states and 605277 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-12-02 14:57:26,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:57:26,982 INFO L93 Difference]: Finished difference Result 739808 states and 2411067 transitions. [2024-12-02 14:57:26,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:57:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 5 states have internal predecessors, (99), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 110 [2024-12-02 14:57:26,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:57:31,413 INFO L225 Difference]: With dead ends: 739808 [2024-12-02 14:57:31,413 INFO L226 Difference]: Without dead ends: 515380 [2024-12-02 14:57:32,768 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-12-02 14:57:32,769 INFO L435 NwaCegarLoop]: 428 mSDtfsCounter, 643 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 1710 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-12-02 14:57:32,769 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 1710 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-12-02 14:57:32,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515380 states.