./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i --full-output --preprocessor.use.memory.slicer false --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fba957c5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-dev-fba957c-m [2023-11-23 10:17:56,110 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 10:17:56,179 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 10:17:56,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 10:17:56,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 10:17:56,209 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 10:17:56,209 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 10:17:56,210 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 10:17:56,210 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 10:17:56,214 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 10:17:56,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 10:17:56,214 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 10:17:56,215 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 10:17:56,217 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 10:17:56,217 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 10:17:56,217 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 10:17:56,218 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 10:17:56,218 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 10:17:56,218 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 10:17:56,218 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 10:17:56,218 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 10:17:56,219 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 10:17:56,219 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 10:17:56,219 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 10:17:56,220 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 10:17:56,220 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 10:17:56,220 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 10:17:56,221 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 10:17:56,221 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 10:17:56,221 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 10:17:56,222 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 10:17:56,222 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 10:17:56,222 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 10:17:56,222 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 10:17:56,223 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 10:17:56,223 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 10:17:56,223 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 10:17:56,223 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 10:17:56,223 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 10:17:56,223 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 10:17:56,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 10:17:56,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 10:17:56,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 10:17:56,481 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 10:17:56,481 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 10:17:56,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2023-11-23 10:17:57,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 10:17:58,121 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 10:17:58,121 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2023-11-23 10:17:58,160 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e727891/969e0c8ee6034478931e53ee4eec5abd/FLAG473aa7af2 [2023-11-23 10:17:58,176 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95e727891/969e0c8ee6034478931e53ee4eec5abd [2023-11-23 10:17:58,179 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 10:17:58,180 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 10:17:58,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 10:17:58,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 10:17:58,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 10:17:58,187 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:17:58" (1/1) ... [2023-11-23 10:17:58,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6460c133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:58, skipping insertion in model container [2023-11-23 10:17:58,188 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:17:58" (1/1) ... [2023-11-23 10:17:58,289 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 10:17:59,891 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2023-11-23 10:17:59,988 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 10:18:00,037 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 10:18:00,480 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.7.3/main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i[424236,424249] [2023-11-23 10:18:00,487 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 10:18:00,611 INFO L206 MainTranslator]: Completed translation [2023-11-23 10:18:00,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00 WrapperNode [2023-11-23 10:18:00,612 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 10:18:00,613 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 10:18:00,613 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 10:18:00,613 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 10:18:00,618 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:00,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,012 INFO L138 Inliner]: procedures = 189, calls = 7574, calls flagged for inlining = 69, calls inlined = 54, statements flattened = 18320 [2023-11-23 10:18:01,013 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 10:18:01,013 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 10:18:01,014 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 10:18:01,014 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 10:18:01,022 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,022 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,251 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,251 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,437 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,677 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,787 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 10:18:01,788 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 10:18:01,788 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 10:18:01,788 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 10:18:01,789 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (1/1) ... [2023-11-23 10:18:01,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 10:18:01,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 10:18:01,850 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 10:18:01,914 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 10:18:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock [2023-11-23 10:18:01,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock [2023-11-23 10:18:01,969 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2023-11-23 10:18:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2023-11-23 10:18:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2023-11-23 10:18:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2023-11-23 10:18:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 10:18:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-23 10:18:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-23 10:18:01,970 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2023-11-23 10:18:01,970 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2023-11-23 10:18:01,971 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock [2023-11-23 10:18:01,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock [2023-11-23 10:18:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2023-11-23 10:18:01,972 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2023-11-23 10:18:01,972 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 10:18:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 10:18:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2023-11-23 10:18:01,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2023-11-23 10:18:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 10:18:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2023-11-23 10:18:01,973 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2023-11-23 10:18:01,973 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2023-11-23 10:18:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2023-11-23 10:18:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2023-11-23 10:18:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2023-11-23 10:18:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-23 10:18:01,974 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-23 10:18:01,974 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2023-11-23 10:18:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2023-11-23 10:18:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2023-11-23 10:18:01,975 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2023-11-23 10:18:01,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 10:18:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-23 10:18:01,976 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-23 10:18:01,976 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2023-11-23 10:18:01,976 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2023-11-23 10:18:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-23 10:18:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-23 10:18:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2023-11-23 10:18:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2023-11-23 10:18:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2023-11-23 10:18:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2023-11-23 10:18:01,977 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2023-11-23 10:18:01,977 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2023-11-23 10:18:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2023-11-23 10:18:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2023-11-23 10:18:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-23 10:18:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-23 10:18:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-23 10:18:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-23 10:18:01,978 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2023-11-23 10:18:01,978 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2023-11-23 10:18:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-23 10:18:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-23 10:18:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-23 10:18:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-23 10:18:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2023-11-23 10:18:01,979 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2023-11-23 10:18:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 10:18:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 10:18:01,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 10:18:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2023-11-23 10:18:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2023-11-23 10:18:01,980 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2023-11-23 10:18:01,980 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2023-11-23 10:18:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2023-11-23 10:18:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2023-11-23 10:18:01,981 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-23 10:18:01,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-23 10:18:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 10:18:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2023-11-23 10:18:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2023-11-23 10:18:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2023-11-23 10:18:01,982 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2023-11-23 10:18:01,982 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2023-11-23 10:18:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2023-11-23 10:18:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2023-11-23 10:18:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2023-11-23 10:18:01,983 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2023-11-23 10:18:01,983 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2023-11-23 10:18:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 10:18:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 10:18:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2023-11-23 10:18:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2023-11-23 10:18:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-23 10:18:01,984 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-23 10:18:01,984 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2023-11-23 10:18:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2023-11-23 10:18:02,000 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2023-11-23 10:18:02,000 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2023-11-23 10:18:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2023-11-23 10:18:02,001 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2023-11-23 10:18:02,001 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 10:18:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-23 10:18:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2023-11-23 10:18:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2023-11-23 10:18:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2023-11-23 10:18:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2023-11-23 10:18:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 10:18:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-23 10:18:02,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-23 10:18:02,002 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock [2023-11-23 10:18:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock [2023-11-23 10:18:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2023-11-23 10:18:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2023-11-23 10:18:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 10:18:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2023-11-23 10:18:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2023-11-23 10:18:02,003 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 10:18:02,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 10:18:02,004 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2023-11-23 10:18:02,004 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2023-11-23 10:18:03,083 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 10:18:03,086 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 10:18:11,826 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 10:18:12,190 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 10:18:12,191 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 10:18:12,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:18:12 BoogieIcfgContainer [2023-11-23 10:18:12,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 10:18:12,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 10:18:12,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 10:18:12,200 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 10:18:12,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:17:58" (1/3) ... [2023-11-23 10:18:12,201 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7243a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:18:12, skipping insertion in model container [2023-11-23 10:18:12,201 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:00" (2/3) ... [2023-11-23 10:18:12,202 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c7243a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:18:12, skipping insertion in model container [2023-11-23 10:18:12,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:18:12" (3/3) ... [2023-11-23 10:18:12,203 INFO L112 eAbstractionObserver]: Analyzing ICFG main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2023-11-23 10:18:12,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 10:18:12,219 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 10:18:12,340 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 10:18:12,346 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@74c07b06, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 10:18:12,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 10:18:12,365 INFO L276 IsEmpty]: Start isEmpty. Operand has 6376 states, 4690 states have (on average 1.524946695095949) internal successors, (7152), 4704 states have internal predecessors, (7152), 1635 states have call successors, (1635), 49 states have call predecessors, (1635), 49 states have return successors, (1635), 1634 states have call predecessors, (1635), 1635 states have call successors, (1635) [2023-11-23 10:18:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 10:18:12,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:12,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 10:18:12,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:12,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:12,379 INFO L85 PathProgramCache]: Analyzing trace with hash -28703905, now seen corresponding path program 1 times [2023-11-23 10:18:12,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:12,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824194762] [2023-11-23 10:18:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:12,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:13,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 10:18:13,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:18:13,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824194762] [2023-11-23 10:18:13,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824194762] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:18:13,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:18:13,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 10:18:13,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523899783] [2023-11-23 10:18:13,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:18:13,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 10:18:13,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:18:13,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 10:18:13,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:13,191 INFO L87 Difference]: Start difference. First operand has 6376 states, 4690 states have (on average 1.524946695095949) internal successors, (7152), 4704 states have internal predecessors, (7152), 1635 states have call successors, (1635), 49 states have call predecessors, (1635), 49 states have return successors, (1635), 1634 states have call predecessors, (1635), 1635 states have call successors, (1635) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:18:13,952 INFO L93 Difference]: Finished difference Result 12749 states and 20910 transitions. [2023-11-23 10:18:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 10:18:13,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-23 10:18:13,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:18:14,065 INFO L225 Difference]: With dead ends: 12749 [2023-11-23 10:18:14,065 INFO L226 Difference]: Without dead ends: 6372 [2023-11-23 10:18:14,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:14,153 INFO L413 NwaCegarLoop]: 10251 mSDtfsCounter, 10348 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10348 SdHoareTripleChecker+Valid, 10251 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 10:18:14,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10348 Valid, 10251 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 10:18:14,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6372 states. [2023-11-23 10:18:14,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6372 to 6372. [2023-11-23 10:18:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6372 states, 4689 states have (on average 1.512049477500533) internal successors, (7090), 4700 states have internal predecessors, (7090), 1634 states have call successors, (1634), 49 states have call predecessors, (1634), 48 states have return successors, (1625), 1624 states have call predecessors, (1625), 1625 states have call successors, (1625) [2023-11-23 10:18:14,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6372 states to 6372 states and 10349 transitions. [2023-11-23 10:18:14,918 INFO L78 Accepts]: Start accepts. Automaton has 6372 states and 10349 transitions. Word has length 6 [2023-11-23 10:18:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:18:14,919 INFO L495 AbstractCegarLoop]: Abstraction has 6372 states and 10349 transitions. [2023-11-23 10:18:14,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 6372 states and 10349 transitions. [2023-11-23 10:18:14,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 10:18:14,919 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:14,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:18:14,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 10:18:14,920 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:14,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:14,921 INFO L85 PathProgramCache]: Analyzing trace with hash -892951178, now seen corresponding path program 1 times [2023-11-23 10:18:14,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:14,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162727725] [2023-11-23 10:18:14,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:14,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:15,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:15,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 10:18:15,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:18:15,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162727725] [2023-11-23 10:18:15,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162727725] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:18:15,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:18:15,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 10:18:15,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167013467] [2023-11-23 10:18:15,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:18:15,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 10:18:15,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:18:15,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 10:18:15,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:15,313 INFO L87 Difference]: Start difference. First operand 6372 states and 10349 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:15,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:18:15,861 INFO L93 Difference]: Finished difference Result 12846 states and 20860 transitions. [2023-11-23 10:18:15,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 10:18:15,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-23 10:18:15,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:18:15,933 INFO L225 Difference]: With dead ends: 12846 [2023-11-23 10:18:15,933 INFO L226 Difference]: Without dead ends: 6475 [2023-11-23 10:18:15,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:16,000 INFO L413 NwaCegarLoop]: 10249 mSDtfsCounter, 9893 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9893 SdHoareTripleChecker+Valid, 10840 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 10:18:16,001 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9893 Valid, 10840 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 10:18:16,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2023-11-23 10:18:17,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 6472. [2023-11-23 10:18:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6472 states, 4762 states have (on average 1.511339773204536) internal successors, (7197), 4771 states have internal predecessors, (7197), 1655 states have call successors, (1655), 56 states have call predecessors, (1655), 54 states have return successors, (1647), 1646 states have call predecessors, (1647), 1647 states have call successors, (1647) [2023-11-23 10:18:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6472 states to 6472 states and 10499 transitions. [2023-11-23 10:18:17,112 INFO L78 Accepts]: Start accepts. Automaton has 6472 states and 10499 transitions. Word has length 7 [2023-11-23 10:18:17,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:18:17,113 INFO L495 AbstractCegarLoop]: Abstraction has 6472 states and 10499 transitions. [2023-11-23 10:18:17,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:17,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6472 states and 10499 transitions. [2023-11-23 10:18:17,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-23 10:18:17,115 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:17,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:18:17,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 10:18:17,115 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:17,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:17,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1914807998, now seen corresponding path program 1 times [2023-11-23 10:18:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:17,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934832413] [2023-11-23 10:18:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:17,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:17,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 10:18:17,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:18:17,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934832413] [2023-11-23 10:18:17,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934832413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:18:17,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:18:17,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 10:18:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722174882] [2023-11-23 10:18:17,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:18:17,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 10:18:17,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:18:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 10:18:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:17,517 INFO L87 Difference]: Start difference. First operand 6472 states and 10499 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:17,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:18:17,977 INFO L93 Difference]: Finished difference Result 6474 states and 10500 transitions. [2023-11-23 10:18:17,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 10:18:17,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-23 10:18:17,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:18:18,029 INFO L225 Difference]: With dead ends: 6474 [2023-11-23 10:18:18,029 INFO L226 Difference]: Without dead ends: 6471 [2023-11-23 10:18:18,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:18,044 INFO L413 NwaCegarLoop]: 10244 mSDtfsCounter, 10338 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10338 SdHoareTripleChecker+Valid, 10244 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 10:18:18,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10338 Valid, 10244 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 10:18:18,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2023-11-23 10:18:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 6471. [2023-11-23 10:18:19,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6471 states, 4762 states have (on average 1.5111297774044519) internal successors, (7196), 4770 states have internal predecessors, (7196), 1654 states have call successors, (1654), 56 states have call predecessors, (1654), 54 states have return successors, (1647), 1646 states have call predecessors, (1647), 1647 states have call successors, (1647) [2023-11-23 10:18:19,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6471 states to 6471 states and 10497 transitions. [2023-11-23 10:18:19,113 INFO L78 Accepts]: Start accepts. Automaton has 6471 states and 10497 transitions. Word has length 8 [2023-11-23 10:18:19,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:18:19,114 INFO L495 AbstractCegarLoop]: Abstraction has 6471 states and 10497 transitions. [2023-11-23 10:18:19,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:19,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6471 states and 10497 transitions. [2023-11-23 10:18:19,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-23 10:18:19,114 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:19,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:18:19,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 10:18:19,115 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:19,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:19,116 INFO L85 PathProgramCache]: Analyzing trace with hash 767373817, now seen corresponding path program 1 times [2023-11-23 10:18:19,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:19,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753738500] [2023-11-23 10:18:19,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:19,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 10:18:19,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:18:19,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753738500] [2023-11-23 10:18:19,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753738500] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:18:19,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:18:19,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 10:18:19,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473910538] [2023-11-23 10:18:19,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:18:19,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 10:18:19,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:18:19,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 10:18:19,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:19,547 INFO L87 Difference]: Start difference. First operand 6471 states and 10497 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:19,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:18:19,938 INFO L93 Difference]: Finished difference Result 6473 states and 10498 transitions. [2023-11-23 10:18:19,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 10:18:19,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-23 10:18:19,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:18:20,002 INFO L225 Difference]: With dead ends: 6473 [2023-11-23 10:18:20,002 INFO L226 Difference]: Without dead ends: 6470 [2023-11-23 10:18:20,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:20,014 INFO L413 NwaCegarLoop]: 10242 mSDtfsCounter, 10335 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10335 SdHoareTripleChecker+Valid, 10242 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 10:18:20,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10335 Valid, 10242 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 10:18:20,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2023-11-23 10:18:20,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6470. [2023-11-23 10:18:20,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6470 states, 4762 states have (on average 1.510919781604368) internal successors, (7195), 4769 states have internal predecessors, (7195), 1653 states have call successors, (1653), 56 states have call predecessors, (1653), 54 states have return successors, (1647), 1646 states have call predecessors, (1647), 1647 states have call successors, (1647) [2023-11-23 10:18:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 10495 transitions. [2023-11-23 10:18:20,839 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 10495 transitions. Word has length 9 [2023-11-23 10:18:20,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:18:20,839 INFO L495 AbstractCegarLoop]: Abstraction has 6470 states and 10495 transitions. [2023-11-23 10:18:20,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:20,840 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 10495 transitions. [2023-11-23 10:18:20,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-23 10:18:20,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:20,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:18:20,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 10:18:20,841 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:20,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:20,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1984330971, now seen corresponding path program 1 times [2023-11-23 10:18:20,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:20,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691384670] [2023-11-23 10:18:20,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:20,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 10:18:21,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:18:21,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691384670] [2023-11-23 10:18:21,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691384670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:18:21,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:18:21,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 10:18:21,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220503473] [2023-11-23 10:18:21,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:18:21,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 10:18:21,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:18:21,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 10:18:21,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:21,134 INFO L87 Difference]: Start difference. First operand 6470 states and 10495 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:18:21,741 INFO L93 Difference]: Finished difference Result 6472 states and 10496 transitions. [2023-11-23 10:18:21,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 10:18:21,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-23 10:18:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:18:21,777 INFO L225 Difference]: With dead ends: 6472 [2023-11-23 10:18:21,778 INFO L226 Difference]: Without dead ends: 6469 [2023-11-23 10:18:21,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:21,787 INFO L413 NwaCegarLoop]: 10240 mSDtfsCounter, 10332 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10332 SdHoareTripleChecker+Valid, 10240 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 10:18:21,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10332 Valid, 10240 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 10:18:21,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2023-11-23 10:18:22,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 6469. [2023-11-23 10:18:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6469 states, 4762 states have (on average 1.510709785804284) internal successors, (7194), 4768 states have internal predecessors, (7194), 1652 states have call successors, (1652), 56 states have call predecessors, (1652), 54 states have return successors, (1647), 1646 states have call predecessors, (1647), 1647 states have call successors, (1647) [2023-11-23 10:18:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10493 transitions. [2023-11-23 10:18:22,626 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10493 transitions. Word has length 10 [2023-11-23 10:18:22,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:18:22,626 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10493 transitions. [2023-11-23 10:18:22,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10493 transitions. [2023-11-23 10:18:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-23 10:18:22,628 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:22,628 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:18:22,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 10:18:22,628 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:22,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:22,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1387828612, now seen corresponding path program 1 times [2023-11-23 10:18:22,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:22,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750456532] [2023-11-23 10:18:22,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:22,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:22,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 10:18:22,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:18:22,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750456532] [2023-11-23 10:18:22,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750456532] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:18:22,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:18:22,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 10:18:22,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018570143] [2023-11-23 10:18:22,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:18:22,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 10:18:22,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:18:22,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 10:18:22,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:22,891 INFO L87 Difference]: Start difference. First operand 6469 states and 10493 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:18:24,392 INFO L93 Difference]: Finished difference Result 19392 states and 31592 transitions. [2023-11-23 10:18:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 10:18:24,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2023-11-23 10:18:24,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:18:24,465 INFO L225 Difference]: With dead ends: 19392 [2023-11-23 10:18:24,465 INFO L226 Difference]: Without dead ends: 12918 [2023-11-23 10:18:24,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 10:18:24,519 INFO L413 NwaCegarLoop]: 10385 mSDtfsCounter, 10361 mSDsluCounter, 10261 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10361 SdHoareTripleChecker+Valid, 20646 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 10:18:24,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10361 Valid, 20646 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 10:18:24,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12918 states. [2023-11-23 10:18:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12918 to 12909. [2023-11-23 10:18:26,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12909 states, 9506 states have (on average 1.5113612455291394) internal successors, (14367), 9517 states have internal predecessors, (14367), 3296 states have call successors, (3296), 109 states have call predecessors, (3296), 106 states have return successors, (3369), 3286 states have call predecessors, (3369), 3289 states have call successors, (3369) [2023-11-23 10:18:26,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12909 states to 12909 states and 21032 transitions. [2023-11-23 10:18:26,168 INFO L78 Accepts]: Start accepts. Automaton has 12909 states and 21032 transitions. Word has length 11 [2023-11-23 10:18:26,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:18:26,169 INFO L495 AbstractCegarLoop]: Abstraction has 12909 states and 21032 transitions. [2023-11-23 10:18:26,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 10:18:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 12909 states and 21032 transitions. [2023-11-23 10:18:26,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 10:18:26,182 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:26,182 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:18:26,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 10:18:26,183 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:26,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1038754289, now seen corresponding path program 1 times [2023-11-23 10:18:26,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:26,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095483018] [2023-11-23 10:18:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:26,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:18:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:26,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 10:18:27,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:27,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:18:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:27,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 10:18:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 10:18:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:27,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 10:18:27,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:27,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 10:18:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 10:18:27,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:18:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095483018] [2023-11-23 10:18:27,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095483018] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:18:27,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:18:27,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 10:18:27,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460109327] [2023-11-23 10:18:27,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:18:27,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 10:18:27,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:18:27,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 10:18:27,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 10:18:27,109 INFO L87 Difference]: Start difference. First operand 12909 states and 21032 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 10:18:34,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:18:34,355 INFO L93 Difference]: Finished difference Result 26099 states and 42623 transitions. [2023-11-23 10:18:34,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 10:18:34,356 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2023-11-23 10:18:34,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:18:34,463 INFO L225 Difference]: With dead ends: 26099 [2023-11-23 10:18:34,463 INFO L226 Difference]: Without dead ends: 13191 [2023-11-23 10:18:34,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 10:18:34,584 INFO L413 NwaCegarLoop]: 9989 mSDtfsCounter, 518 mSDsluCounter, 25419 mSDsCounter, 0 mSdLazyCounter, 4023 mSolverCounterSat, 1716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 35408 SdHoareTripleChecker+Invalid, 5739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1716 IncrementalHoareTripleChecker+Valid, 4023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-11-23 10:18:34,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 35408 Invalid, 5739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1716 Valid, 4023 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2023-11-23 10:18:34,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13191 states. [2023-11-23 10:18:36,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13191 to 13067. [2023-11-23 10:18:36,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13067 states, 9623 states have (on average 1.5102358931726072) internal successors, (14533), 9636 states have internal predecessors, (14533), 3331 states have call successors, (3331), 111 states have call predecessors, (3331), 112 states have return successors, (3414), 3323 states have call predecessors, (3414), 3324 states have call successors, (3414) [2023-11-23 10:18:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13067 states to 13067 states and 21278 transitions. [2023-11-23 10:18:36,343 INFO L78 Accepts]: Start accepts. Automaton has 13067 states and 21278 transitions. Word has length 65 [2023-11-23 10:18:36,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:18:36,344 INFO L495 AbstractCegarLoop]: Abstraction has 13067 states and 21278 transitions. [2023-11-23 10:18:36,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-23 10:18:36,344 INFO L276 IsEmpty]: Start isEmpty. Operand 13067 states and 21278 transitions. [2023-11-23 10:18:36,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 10:18:36,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:36,350 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:18:36,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 10:18:36,350 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:36,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:36,351 INFO L85 PathProgramCache]: Analyzing trace with hash 391477233, now seen corresponding path program 1 times [2023-11-23 10:18:36,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:36,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790255702] [2023-11-23 10:18:36,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:36,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:36,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:18:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:36,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 10:18:36,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:36,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:18:36,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:37,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 10:18:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:37,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 10:18:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:18:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:37,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 10:18:37,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:37,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 10:18:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:37,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 10:18:37,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:18:37,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 10:18:37,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:18:37,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790255702] [2023-11-23 10:18:37,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790255702] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:18:37,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:18:37,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 10:18:37,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345662770] [2023-11-23 10:18:37,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:18:37,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 10:18:37,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:18:37,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 10:18:37,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 10:18:37,116 INFO L87 Difference]: Start difference. First operand 13067 states and 21278 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:18:56,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:18:56,465 INFO L93 Difference]: Finished difference Result 31542 states and 51594 transitions. [2023-11-23 10:18:56,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 10:18:56,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2023-11-23 10:18:56,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:18:56,727 INFO L225 Difference]: With dead ends: 31542 [2023-11-23 10:18:56,736 INFO L226 Difference]: Without dead ends: 18476 [2023-11-23 10:18:56,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 10:18:56,865 INFO L413 NwaCegarLoop]: 6472 mSDtfsCounter, 6464 mSDsluCounter, 14398 mSDsCounter, 0 mSdLazyCounter, 13716 mSolverCounterSat, 4419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7734 SdHoareTripleChecker+Valid, 20870 SdHoareTripleChecker+Invalid, 18135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4419 IncrementalHoareTripleChecker+Valid, 13716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.0s IncrementalHoareTripleChecker+Time [2023-11-23 10:18:56,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7734 Valid, 20870 Invalid, 18135 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4419 Valid, 13716 Invalid, 0 Unknown, 0 Unchecked, 18.0s Time] [2023-11-23 10:18:56,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18476 states. [2023-11-23 10:18:59,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18476 to 13069. [2023-11-23 10:18:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13069 states, 9625 states have (on average 1.5101298701298702) internal successors, (14535), 9638 states have internal predecessors, (14535), 3331 states have call successors, (3331), 111 states have call predecessors, (3331), 112 states have return successors, (3414), 3323 states have call predecessors, (3414), 3324 states have call successors, (3414) [2023-11-23 10:18:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13069 states to 13069 states and 21280 transitions. [2023-11-23 10:18:59,482 INFO L78 Accepts]: Start accepts. Automaton has 13069 states and 21280 transitions. Word has length 67 [2023-11-23 10:18:59,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:18:59,482 INFO L495 AbstractCegarLoop]: Abstraction has 13069 states and 21280 transitions. [2023-11-23 10:18:59,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:18:59,482 INFO L276 IsEmpty]: Start isEmpty. Operand 13069 states and 21280 transitions. [2023-11-23 10:18:59,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 10:18:59,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:18:59,495 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:18:59,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 10:18:59,496 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:18:59,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:18:59,497 INFO L85 PathProgramCache]: Analyzing trace with hash -995308177, now seen corresponding path program 1 times [2023-11-23 10:18:59,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:18:59,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615694606] [2023-11-23 10:18:59,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:18:59,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:18:59,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:19:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 10:19:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:19:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 10:19:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 10:19:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:19:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 10:19:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 10:19:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 10:19:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:00,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 10:19:00,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:19:00,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615694606] [2023-11-23 10:19:00,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615694606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:19:00,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:19:00,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 10:19:00,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331588876] [2023-11-23 10:19:00,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:19:00,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 10:19:00,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:19:00,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 10:19:00,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 10:19:00,745 INFO L87 Difference]: Start difference. First operand 13069 states and 21280 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:19:21,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:19:21,997 INFO L93 Difference]: Finished difference Result 31548 states and 54296 transitions. [2023-11-23 10:19:21,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 10:19:21,997 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 67 [2023-11-23 10:19:21,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:19:22,081 INFO L225 Difference]: With dead ends: 31548 [2023-11-23 10:19:22,081 INFO L226 Difference]: Without dead ends: 18480 [2023-11-23 10:19:22,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 10:19:22,191 INFO L413 NwaCegarLoop]: 6510 mSDtfsCounter, 6462 mSDsluCounter, 26891 mSDsCounter, 0 mSdLazyCounter, 22166 mSolverCounterSat, 4400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7734 SdHoareTripleChecker+Valid, 33401 SdHoareTripleChecker+Invalid, 26566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4400 IncrementalHoareTripleChecker+Valid, 22166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.6s IncrementalHoareTripleChecker+Time [2023-11-23 10:19:22,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7734 Valid, 33401 Invalid, 26566 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4400 Valid, 22166 Invalid, 0 Unknown, 0 Unchecked, 19.6s Time] [2023-11-23 10:19:22,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18480 states. [2023-11-23 10:19:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18480 to 13073. [2023-11-23 10:19:24,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13073 states, 9629 states have (on average 1.5099179561740574) internal successors, (14539), 9642 states have internal predecessors, (14539), 3331 states have call successors, (3331), 111 states have call predecessors, (3331), 112 states have return successors, (3414), 3323 states have call predecessors, (3414), 3324 states have call successors, (3414) [2023-11-23 10:19:24,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13073 states to 13073 states and 21284 transitions. [2023-11-23 10:19:24,505 INFO L78 Accepts]: Start accepts. Automaton has 13073 states and 21284 transitions. Word has length 67 [2023-11-23 10:19:24,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:19:24,505 INFO L495 AbstractCegarLoop]: Abstraction has 13073 states and 21284 transitions. [2023-11-23 10:19:24,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:19:24,506 INFO L276 IsEmpty]: Start isEmpty. Operand 13073 states and 21284 transitions. [2023-11-23 10:19:24,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-23 10:19:24,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:19:24,512 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:19:24,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 10:19:24,513 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:19:24,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:19:24,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1639168357, now seen corresponding path program 1 times [2023-11-23 10:19:24,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:19:24,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875111699] [2023-11-23 10:19:24,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:19:24,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:19:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:19:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 10:19:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:19:25,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 10:19:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 10:19:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:19:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 10:19:25,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 10:19:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:19:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 10:19:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:19:25,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875111699] [2023-11-23 10:19:25,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875111699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:19:25,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:19:25,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 10:19:25,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053154100] [2023-11-23 10:19:25,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:19:25,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 10:19:25,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:19:25,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 10:19:25,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 10:19:25,527 INFO L87 Difference]: Start difference. First operand 13073 states and 21284 transitions. Second operand has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 10:19:49,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:19:49,410 INFO L93 Difference]: Finished difference Result 31830 states and 54426 transitions. [2023-11-23 10:19:49,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 10:19:49,411 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 68 [2023-11-23 10:19:49,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:19:49,565 INFO L225 Difference]: With dead ends: 31830 [2023-11-23 10:19:49,565 INFO L226 Difference]: Without dead ends: 18758 [2023-11-23 10:19:49,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-23 10:19:49,659 INFO L413 NwaCegarLoop]: 6616 mSDtfsCounter, 6619 mSDsluCounter, 33497 mSDsCounter, 0 mSdLazyCounter, 26547 mSolverCounterSat, 4443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8553 SdHoareTripleChecker+Valid, 40113 SdHoareTripleChecker+Invalid, 30990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4443 IncrementalHoareTripleChecker+Valid, 26547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2023-11-23 10:19:49,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8553 Valid, 40113 Invalid, 30990 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4443 Valid, 26547 Invalid, 0 Unknown, 0 Unchecked, 22.1s Time] [2023-11-23 10:19:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18758 states. [2023-11-23 10:19:53,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18758 to 13081. [2023-11-23 10:19:53,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13081 states, 9635 states have (on average 1.5096004151530877) internal successors, (14545), 9648 states have internal predecessors, (14545), 3331 states have call successors, (3331), 111 states have call predecessors, (3331), 114 states have return successors, (3454), 3325 states have call predecessors, (3454), 3324 states have call successors, (3454) [2023-11-23 10:19:53,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13081 states to 13081 states and 21330 transitions. [2023-11-23 10:19:53,531 INFO L78 Accepts]: Start accepts. Automaton has 13081 states and 21330 transitions. Word has length 68 [2023-11-23 10:19:53,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:19:53,533 INFO L495 AbstractCegarLoop]: Abstraction has 13081 states and 21330 transitions. [2023-11-23 10:19:53,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 10:19:53,533 INFO L276 IsEmpty]: Start isEmpty. Operand 13081 states and 21330 transitions. [2023-11-23 10:19:53,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-23 10:19:53,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:19:53,539 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:19:53,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 10:19:53,540 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:19:53,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:19:53,540 INFO L85 PathProgramCache]: Analyzing trace with hash -127302664, now seen corresponding path program 1 times [2023-11-23 10:19:53,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:19:53,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554993626] [2023-11-23 10:19:53,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:19:53,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:19:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:19:54,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-23 10:19:54,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:19:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-23 10:19:54,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 10:19:54,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:19:54,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-23 10:19:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 10:19:54,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:19:54,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:19:54,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 10:19:54,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:19:54,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554993626] [2023-11-23 10:19:54,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554993626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:19:54,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:19:54,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 10:19:54,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938152865] [2023-11-23 10:19:54,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:19:54,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 10:19:54,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:19:54,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 10:19:54,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 10:19:54,175 INFO L87 Difference]: Start difference. First operand 13081 states and 21330 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:20:09,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:20:09,260 INFO L93 Difference]: Finished difference Result 18491 states and 30335 transitions. [2023-11-23 10:20:09,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 10:20:09,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 70 [2023-11-23 10:20:09,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:20:09,362 INFO L225 Difference]: With dead ends: 18491 [2023-11-23 10:20:09,362 INFO L226 Difference]: Without dead ends: 18488 [2023-11-23 10:20:09,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-23 10:20:09,381 INFO L413 NwaCegarLoop]: 6457 mSDtfsCounter, 6979 mSDsluCounter, 13193 mSDsCounter, 0 mSdLazyCounter, 14796 mSolverCounterSat, 4480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8295 SdHoareTripleChecker+Valid, 19650 SdHoareTripleChecker+Invalid, 19276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4480 IncrementalHoareTripleChecker+Valid, 14796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.0s IncrementalHoareTripleChecker+Time [2023-11-23 10:20:09,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8295 Valid, 19650 Invalid, 19276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4480 Valid, 14796 Invalid, 0 Unknown, 0 Unchecked, 14.0s Time] [2023-11-23 10:20:09,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18488 states. [2023-11-23 10:20:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18488 to 13081. [2023-11-23 10:20:11,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13081 states, 9635 states have (on average 1.5093928386092372) internal successors, (14543), 9648 states have internal predecessors, (14543), 3331 states have call successors, (3331), 111 states have call predecessors, (3331), 114 states have return successors, (3454), 3325 states have call predecessors, (3454), 3324 states have call successors, (3454) [2023-11-23 10:20:11,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13081 states to 13081 states and 21328 transitions. [2023-11-23 10:20:11,844 INFO L78 Accepts]: Start accepts. Automaton has 13081 states and 21328 transitions. Word has length 70 [2023-11-23 10:20:11,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:20:11,845 INFO L495 AbstractCegarLoop]: Abstraction has 13081 states and 21328 transitions. [2023-11-23 10:20:11,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 3 states have internal predecessors, (48), 3 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:20:11,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13081 states and 21328 transitions. [2023-11-23 10:20:11,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-23 10:20:11,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:20:11,852 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:20:11,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 10:20:11,852 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:20:11,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:20:11,853 INFO L85 PathProgramCache]: Analyzing trace with hash -328144219, now seen corresponding path program 1 times [2023-11-23 10:20:11,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:20:11,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117416683] [2023-11-23 10:20:11,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:20:11,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:20:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 10:20:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 10:20:12,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 10:20:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 10:20:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:20:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-23 10:20:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-23 10:20:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 10:20:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:20:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-23 10:20:12,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:20:12,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117416683] [2023-11-23 10:20:12,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117416683] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:20:12,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:20:12,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 10:20:12,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221136763] [2023-11-23 10:20:12,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:20:12,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 10:20:12,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:20:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 10:20:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 10:20:12,866 INFO L87 Difference]: Start difference. First operand 13081 states and 21328 transitions. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 10:20:23,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:20:23,599 INFO L93 Difference]: Finished difference Result 13611 states and 22345 transitions. [2023-11-23 10:20:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 10:20:23,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 76 [2023-11-23 10:20:23,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:20:23,689 INFO L225 Difference]: With dead ends: 13611 [2023-11-23 10:20:23,689 INFO L226 Difference]: Without dead ends: 13604 [2023-11-23 10:20:23,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 10:20:23,713 INFO L413 NwaCegarLoop]: 9835 mSDtfsCounter, 563 mSDsluCounter, 39113 mSDsCounter, 0 mSdLazyCounter, 9267 mSolverCounterSat, 1689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 48948 SdHoareTripleChecker+Invalid, 10956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1689 IncrementalHoareTripleChecker+Valid, 9267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2023-11-23 10:20:23,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 48948 Invalid, 10956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1689 Valid, 9267 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2023-11-23 10:20:23,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13604 states. [2023-11-23 10:20:25,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13604 to 13089. [2023-11-23 10:20:25,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13089 states, 9641 states have (on average 1.509075822010165) internal successors, (14549), 9654 states have internal predecessors, (14549), 3331 states have call successors, (3331), 111 states have call predecessors, (3331), 116 states have return successors, (3490), 3327 states have call predecessors, (3490), 3324 states have call successors, (3490) [2023-11-23 10:20:25,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13089 states to 13089 states and 21370 transitions. [2023-11-23 10:20:25,641 INFO L78 Accepts]: Start accepts. Automaton has 13089 states and 21370 transitions. Word has length 76 [2023-11-23 10:20:25,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:20:25,641 INFO L495 AbstractCegarLoop]: Abstraction has 13089 states and 21370 transitions. [2023-11-23 10:20:25,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2023-11-23 10:20:25,642 INFO L276 IsEmpty]: Start isEmpty. Operand 13089 states and 21370 transitions. [2023-11-23 10:20:25,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 10:20:25,648 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:20:25,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:20:25,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 10:20:25,649 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:20:25,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:20:25,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1451949488, now seen corresponding path program 1 times [2023-11-23 10:20:25,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:20:25,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386886496] [2023-11-23 10:20:25,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:20:25,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:20:25,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:25,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:20:26,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 10:20:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 10:20:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:20:26,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 10:20:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:20:26,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 10:20:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:20:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 10:20:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 10:20:26,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:20:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386886496] [2023-11-23 10:20:26,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386886496] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:20:26,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:20:26,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 10:20:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165191162] [2023-11-23 10:20:26,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:20:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 10:20:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:20:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 10:20:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 10:20:26,101 INFO L87 Difference]: Start difference. First operand 13089 states and 21370 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:20:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:20:31,931 INFO L93 Difference]: Finished difference Result 26305 states and 43131 transitions. [2023-11-23 10:20:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 10:20:31,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 78 [2023-11-23 10:20:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:20:32,011 INFO L225 Difference]: With dead ends: 26305 [2023-11-23 10:20:32,012 INFO L226 Difference]: Without dead ends: 13217 [2023-11-23 10:20:32,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 10:20:32,099 INFO L413 NwaCegarLoop]: 10003 mSDtfsCounter, 344 mSDsluCounter, 15911 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 1642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 25914 SdHoareTripleChecker+Invalid, 4827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1642 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-23 10:20:32,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 25914 Invalid, 4827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1642 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-23 10:20:32,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13217 states. [2023-11-23 10:20:33,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13217 to 13093. [2023-11-23 10:20:33,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13093 states, 9645 states have (on average 1.508864696734059) internal successors, (14553), 9658 states have internal predecessors, (14553), 3331 states have call successors, (3331), 111 states have call predecessors, (3331), 116 states have return successors, (3490), 3327 states have call predecessors, (3490), 3324 states have call successors, (3490) [2023-11-23 10:20:33,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13093 states to 13093 states and 21374 transitions. [2023-11-23 10:20:33,844 INFO L78 Accepts]: Start accepts. Automaton has 13093 states and 21374 transitions. Word has length 78 [2023-11-23 10:20:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:20:33,845 INFO L495 AbstractCegarLoop]: Abstraction has 13093 states and 21374 transitions. [2023-11-23 10:20:33,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:20:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13093 states and 21374 transitions. [2023-11-23 10:20:33,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 10:20:33,851 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:20:33,851 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:20:33,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-23 10:20:33,852 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:20:33,852 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:20:33,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1107947618, now seen corresponding path program 1 times [2023-11-23 10:20:33,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:20:33,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178421551] [2023-11-23 10:20:33,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:20:33,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:20:34,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 10:20:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 10:20:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 10:20:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:20:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 10:20:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:20:35,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 10:20:35,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:20:35,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 10:20:35,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 10:20:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:20:35,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178421551] [2023-11-23 10:20:35,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178421551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:20:35,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:20:35,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 10:20:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422321039] [2023-11-23 10:20:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:20:35,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 10:20:35,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:20:35,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 10:20:35,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 10:20:35,333 INFO L87 Difference]: Start difference. First operand 13093 states and 21374 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 10:20:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:20:43,844 INFO L93 Difference]: Finished difference Result 26642 states and 44416 transitions. [2023-11-23 10:20:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 10:20:43,845 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-23 10:20:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:20:43,941 INFO L225 Difference]: With dead ends: 26642 [2023-11-23 10:20:43,941 INFO L226 Difference]: Without dead ends: 13550 [2023-11-23 10:20:44,043 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 10:20:44,044 INFO L413 NwaCegarLoop]: 10071 mSDtfsCounter, 501 mSDsluCounter, 54512 mSDsCounter, 0 mSdLazyCounter, 6373 mSolverCounterSat, 1681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 64583 SdHoareTripleChecker+Invalid, 8054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1681 IncrementalHoareTripleChecker+Valid, 6373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2023-11-23 10:20:44,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 64583 Invalid, 8054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1681 Valid, 6373 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2023-11-23 10:20:44,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13550 states. [2023-11-23 10:20:46,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13550 to 13231. [2023-11-23 10:20:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13231 states, 9751 states have (on average 1.5090759922059276) internal successors, (14715), 9762 states have internal predecessors, (14715), 3361 states have call successors, (3361), 111 states have call predecessors, (3361), 118 states have return successors, (4038), 3361 states have call predecessors, (4038), 3354 states have call successors, (4038) [2023-11-23 10:20:46,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13231 states to 13231 states and 22114 transitions. [2023-11-23 10:20:46,208 INFO L78 Accepts]: Start accepts. Automaton has 13231 states and 22114 transitions. Word has length 78 [2023-11-23 10:20:46,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:20:46,209 INFO L495 AbstractCegarLoop]: Abstraction has 13231 states and 22114 transitions. [2023-11-23 10:20:46,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 10:20:46,209 INFO L276 IsEmpty]: Start isEmpty. Operand 13231 states and 22114 transitions. [2023-11-23 10:20:46,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-23 10:20:46,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:20:46,215 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:20:46,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-23 10:20:46,216 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:20:46,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:20:46,216 INFO L85 PathProgramCache]: Analyzing trace with hash -228917530, now seen corresponding path program 1 times [2023-11-23 10:20:46,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:20:46,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778714300] [2023-11-23 10:20:46,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:20:46,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:20:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 10:20:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 10:20:47,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 10:20:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:20:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 10:20:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-23 10:20:47,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 10:20:47,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:20:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 10:20:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:20:47,517 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 10:20:47,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:20:47,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778714300] [2023-11-23 10:20:47,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778714300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:20:47,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:20:47,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 10:20:47,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600065934] [2023-11-23 10:20:47,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:20:47,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 10:20:47,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:20:47,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 10:20:47,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 10:20:47,519 INFO L87 Difference]: Start difference. First operand 13231 states and 22114 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 10:20:56,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:20:56,679 INFO L93 Difference]: Finished difference Result 26912 states and 45374 transitions. [2023-11-23 10:20:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 10:20:56,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 78 [2023-11-23 10:20:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:20:56,762 INFO L225 Difference]: With dead ends: 26912 [2023-11-23 10:20:56,762 INFO L226 Difference]: Without dead ends: 13682 [2023-11-23 10:20:56,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 10:20:56,859 INFO L413 NwaCegarLoop]: 10123 mSDtfsCounter, 501 mSDsluCounter, 54713 mSDsCounter, 0 mSdLazyCounter, 6386 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 64836 SdHoareTripleChecker+Invalid, 8057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1671 IncrementalHoareTripleChecker+Valid, 6386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2023-11-23 10:20:56,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 64836 Invalid, 8057 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1671 Valid, 6386 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2023-11-23 10:20:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13682 states. [2023-11-23 10:20:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13682 to 13235. [2023-11-23 10:20:58,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13235 states, 9755 states have (on average 1.508867247565351) internal successors, (14719), 9762 states have internal predecessors, (14719), 3361 states have call successors, (3361), 111 states have call predecessors, (3361), 118 states have return successors, (4038), 3365 states have call predecessors, (4038), 3354 states have call successors, (4038) [2023-11-23 10:20:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13235 states to 13235 states and 22118 transitions. [2023-11-23 10:20:58,880 INFO L78 Accepts]: Start accepts. Automaton has 13235 states and 22118 transitions. Word has length 78 [2023-11-23 10:20:58,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:20:58,881 INFO L495 AbstractCegarLoop]: Abstraction has 13235 states and 22118 transitions. [2023-11-23 10:20:58,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 10:20:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 13235 states and 22118 transitions. [2023-11-23 10:20:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-23 10:20:58,890 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:20:58,891 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:20:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 10:20:58,891 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:20:58,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:20:58,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1626162821, now seen corresponding path program 1 times [2023-11-23 10:20:58,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:20:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644482888] [2023-11-23 10:20:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:20:58,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:20:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 10:21:02,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 10:21:02,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 10:21:02,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:21:02,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-23 10:21:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-23 10:21:02,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 10:21:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:21:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-23 10:21:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:02,332 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 10:21:02,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:21:02,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644482888] [2023-11-23 10:21:02,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644482888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:21:02,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 10:21:02,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-23 10:21:02,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778825854] [2023-11-23 10:21:02,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:21:02,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-23 10:21:02,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:21:02,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-23 10:21:02,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-23 10:21:02,335 INFO L87 Difference]: Start difference. First operand 13235 states and 22118 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 5 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 10:21:14,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:21:14,893 INFO L93 Difference]: Finished difference Result 27495 states and 46226 transitions. [2023-11-23 10:21:14,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 10:21:14,893 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 5 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 79 [2023-11-23 10:21:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:21:15,097 INFO L225 Difference]: With dead ends: 27495 [2023-11-23 10:21:15,097 INFO L226 Difference]: Without dead ends: 14261 [2023-11-23 10:21:15,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2023-11-23 10:21:15,213 INFO L413 NwaCegarLoop]: 9841 mSDtfsCounter, 1905 mSDsluCounter, 39630 mSDsCounter, 0 mSdLazyCounter, 14476 mSolverCounterSat, 3795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 49471 SdHoareTripleChecker+Invalid, 18271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3795 IncrementalHoareTripleChecker+Valid, 14476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.3s IncrementalHoareTripleChecker+Time [2023-11-23 10:21:15,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 49471 Invalid, 18271 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3795 Valid, 14476 Invalid, 0 Unknown, 0 Unchecked, 11.3s Time] [2023-11-23 10:21:15,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2023-11-23 10:21:17,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 13806. [2023-11-23 10:21:17,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13806 states, 10137 states have (on average 1.5073493143928185) internal successors, (15280), 10191 states have internal predecessors, (15280), 3508 states have call successors, (3508), 156 states have call predecessors, (3508), 160 states have return successors, (4243), 3462 states have call predecessors, (4243), 3501 states have call successors, (4243) [2023-11-23 10:21:17,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 23031 transitions. [2023-11-23 10:21:17,195 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 23031 transitions. Word has length 79 [2023-11-23 10:21:17,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:21:17,195 INFO L495 AbstractCegarLoop]: Abstraction has 13806 states and 23031 transitions. [2023-11-23 10:21:17,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 9 states have internal predecessors, (55), 5 states have call successors, (13), 5 states have call predecessors, (13), 2 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 10:21:17,196 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 23031 transitions. [2023-11-23 10:21:17,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-23 10:21:17,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:21:17,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:21:17,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 10:21:17,204 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:21:17,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:21:17,205 INFO L85 PathProgramCache]: Analyzing trace with hash 365327259, now seen corresponding path program 1 times [2023-11-23 10:21:17,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:21:17,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242914545] [2023-11-23 10:21:17,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:21:17,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:21:17,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:21:18,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:21:18,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-23 10:21:18,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-23 10:21:18,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-23 10:21:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:21:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-23 10:21:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-23 10:21:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 10:21:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 10:21:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-23 10:21:18,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:18,783 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 10:21:18,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:21:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242914545] [2023-11-23 10:21:18,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242914545] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 10:21:18,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278668958] [2023-11-23 10:21:18,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:21:18,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 10:21:18,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 10:21:18,812 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 10:21:18,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 10:21:20,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:20,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 8491 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 10:21:20,795 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 10:21:20,867 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 10:21:20,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 10:21:20,935 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-23 10:21:20,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278668958] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 10:21:20,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-23 10:21:20,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 8 [2023-11-23 10:21:20,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219272301] [2023-11-23 10:21:20,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:21:20,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 10:21:20,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:21:20,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 10:21:20,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 10:21:20,938 INFO L87 Difference]: Start difference. First operand 13806 states and 23031 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 10:21:22,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:21:22,386 INFO L93 Difference]: Finished difference Result 27072 states and 47109 transitions. [2023-11-23 10:21:22,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 10:21:22,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 92 [2023-11-23 10:21:22,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:21:22,488 INFO L225 Difference]: With dead ends: 27072 [2023-11-23 10:21:22,489 INFO L226 Difference]: Without dead ends: 13810 [2023-11-23 10:21:22,636 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 201 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 10:21:22,636 INFO L413 NwaCegarLoop]: 10238 mSDtfsCounter, 2 mSDsluCounter, 20474 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 30712 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 10:21:22,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30712 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 10:21:22,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13810 states. [2023-11-23 10:21:24,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13810 to 13810. [2023-11-23 10:21:24,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13810 states, 10141 states have (on average 1.5071491963317227) internal successors, (15284), 10195 states have internal predecessors, (15284), 3508 states have call successors, (3508), 156 states have call predecessors, (3508), 160 states have return successors, (4243), 3462 states have call predecessors, (4243), 3501 states have call successors, (4243) [2023-11-23 10:21:24,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13810 states to 13810 states and 23035 transitions. [2023-11-23 10:21:24,651 INFO L78 Accepts]: Start accepts. Automaton has 13810 states and 23035 transitions. Word has length 92 [2023-11-23 10:21:24,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:21:24,651 INFO L495 AbstractCegarLoop]: Abstraction has 13810 states and 23035 transitions. [2023-11-23 10:21:24,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 10:21:24,652 INFO L276 IsEmpty]: Start isEmpty. Operand 13810 states and 23035 transitions. [2023-11-23 10:21:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 10:21:24,661 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:21:24,661 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:21:24,704 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 10:21:24,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 10:21:24,885 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:21:24,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:21:24,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1910394780, now seen corresponding path program 1 times [2023-11-23 10:21:24,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:21:24,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255446041] [2023-11-23 10:21:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:21:24,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:21:25,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:21:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:33,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 10:21:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:33,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-23 10:21:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:34,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 10:21:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:34,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-23 10:21:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:34,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-23 10:21:34,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 10:21:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-23 10:21:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:35,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-23 10:21:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:35,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 10:21:35,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 10:21:35,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255446041] [2023-11-23 10:21:35,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255446041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 10:21:35,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60379771] [2023-11-23 10:21:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:21:35,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 10:21:35,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 10:21:35,174 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 10:21:35,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 10:21:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 10:21:37,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 8462 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-23 10:21:37,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 10:21:37,211 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 10:21:37,211 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 10:21:37,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60379771] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 10:21:37,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 10:21:37,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 20 [2023-11-23 10:21:37,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479743734] [2023-11-23 10:21:37,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 10:21:37,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 10:21:37,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 10:21:37,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 10:21:37,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-11-23 10:21:37,213 INFO L87 Difference]: Start difference. First operand 13810 states and 23035 transitions. Second operand has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:21:39,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 10:21:39,141 INFO L93 Difference]: Finished difference Result 27106 states and 47030 transitions. [2023-11-23 10:21:39,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 10:21:39,142 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 82 [2023-11-23 10:21:39,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 10:21:39,256 INFO L225 Difference]: With dead ends: 27106 [2023-11-23 10:21:39,257 INFO L226 Difference]: Without dead ends: 13840 [2023-11-23 10:21:39,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2023-11-23 10:21:39,389 INFO L413 NwaCegarLoop]: 10258 mSDtfsCounter, 10 mSDsluCounter, 41025 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 51283 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 10:21:39,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 51283 Invalid, 505 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 10:21:39,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13840 states. [2023-11-23 10:21:42,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13840 to 13822. [2023-11-23 10:21:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13822 states, 10151 states have (on average 1.5066495911732833) internal successors, (15294), 10203 states have internal predecessors, (15294), 3508 states have call successors, (3508), 156 states have call predecessors, (3508), 162 states have return successors, (5781), 3466 states have call predecessors, (5781), 3501 states have call successors, (5781) [2023-11-23 10:21:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13822 states to 13822 states and 24583 transitions. [2023-11-23 10:21:42,812 INFO L78 Accepts]: Start accepts. Automaton has 13822 states and 24583 transitions. Word has length 82 [2023-11-23 10:21:42,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 10:21:42,812 INFO L495 AbstractCegarLoop]: Abstraction has 13822 states and 24583 transitions. [2023-11-23 10:21:42,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 10:21:42,813 INFO L276 IsEmpty]: Start isEmpty. Operand 13822 states and 24583 transitions. [2023-11-23 10:21:42,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-23 10:21:42,821 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 10:21:42,822 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 10:21:42,848 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-23 10:21:43,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 10:21:43,031 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 10:21:43,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 10:21:43,034 INFO L85 PathProgramCache]: Analyzing trace with hash 838724044, now seen corresponding path program 1 times [2023-11-23 10:21:43,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 10:21:43,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940418856] [2023-11-23 10:21:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 10:21:43,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 10:21:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15