./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 6ae2ee47 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-6ae2ee4-m [2023-11-22 20:53:13,025 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-22 20:53:13,095 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-22 20:53:13,099 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-22 20:53:13,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-22 20:53:13,119 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-22 20:53:13,120 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-22 20:53:13,120 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-22 20:53:13,121 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-22 20:53:13,126 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-22 20:53:13,126 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-22 20:53:13,126 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-22 20:53:13,126 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-22 20:53:13,128 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-22 20:53:13,128 INFO L153 SettingsManager]: * Use SBE=true [2023-11-22 20:53:13,128 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-22 20:53:13,128 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-22 20:53:13,128 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-22 20:53:13,129 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-22 20:53:13,129 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-22 20:53:13,129 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-22 20:53:13,129 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-22 20:53:13,130 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-22 20:53:13,130 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-22 20:53:13,130 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-22 20:53:13,131 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-22 20:53:13,131 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-22 20:53:13,131 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-22 20:53:13,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 20:53:13,132 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-22 20:53:13,132 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-22 20:53:13,133 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-22 20:53:13,133 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-22 20:53:13,133 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-22 20:53:13,133 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-22 20:53:13,133 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-22 20:53:13,133 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-22 20:53:13,134 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-22 20:53:13,134 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-22 20:53:13,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1edb128dac5f1749a8164cdbec3766f388b8d95e25a83a97d25b5ef9e1604ba3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-22 20:53:13,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-22 20:53:13,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-22 20:53:13,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-22 20:53:13,372 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-22 20:53:13,372 INFO L274 PluginConnector]: CDTParser initialized [2023-11-22 20:53:13,373 INFO L431 ainManager$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 [2023-11-22 20:53:14,456 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-22 20:53:14,850 INFO L384 CDTParser]: Found 1 translation units. [2023-11-22 20:53:14,850 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 [2023-11-22 20:53:14,894 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54bdffd8e/9d8cc35d5419466fac41a803f7940b69/FLAGcf85fc7f0 [2023-11-22 20:53:14,909 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/54bdffd8e/9d8cc35d5419466fac41a803f7940b69 [2023-11-22 20:53:14,912 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-22 20:53:14,913 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-22 20:53:14,914 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-22 20:53:14,914 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-22 20:53:14,917 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-22 20:53:14,918 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:53:14" (1/1) ... [2023-11-22 20:53:14,918 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d7d6310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:14, skipping insertion in model container [2023-11-22 20:53:14,919 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:53:14" (1/1) ... [2023-11-22 20:53:15,082 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-22 20:53:16,562 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] [2023-11-22 20:53:16,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 20:53:16,702 INFO L202 MainTranslator]: Completed pre-run [2023-11-22 20:53:17,042 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] [2023-11-22 20:53:17,047 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-22 20:53:17,163 INFO L206 MainTranslator]: Completed translation [2023-11-22 20:53:17,163 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17 WrapperNode [2023-11-22 20:53:17,164 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-22 20:53:17,164 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-22 20:53:17,165 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-22 20:53:17,165 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-22 20:53:17,170 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:17,307 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:17,603 INFO L138 Inliner]: procedures = 189, calls = 7574, calls flagged for inlining = 69, calls inlined = 54, statements flattened = 18320 [2023-11-22 20:53:17,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-22 20:53:17,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-22 20:53:17,604 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-22 20:53:17,604 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-22 20:53:17,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:17,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:17,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:17,683 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:18,133 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:18,218 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:18,250 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:18,275 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:18,433 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-22 20:53:18,440 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-22 20:53:18,445 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-22 20:53:18,445 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-22 20:53:18,446 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (1/1) ... [2023-11-22 20:53:18,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-22 20:53:18,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:53:18,486 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) [2023-11-22 20:53:18,512 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 [2023-11-22 20:53:18,542 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock [2023-11-22 20:53:18,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock [2023-11-22 20:53:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2023-11-22 20:53:18,543 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2023-11-22 20:53:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2023-11-22 20:53:18,543 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2023-11-22 20:53:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-22 20:53:18,543 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-22 20:53:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-22 20:53:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2023-11-22 20:53:18,544 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2023-11-22 20:53:18,544 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock [2023-11-22 20:53:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock [2023-11-22 20:53:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2023-11-22 20:53:18,545 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2023-11-22 20:53:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-22 20:53:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-22 20:53:18,545 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2023-11-22 20:53:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2023-11-22 20:53:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-22 20:53:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2023-11-22 20:53:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2023-11-22 20:53:18,546 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2023-11-22 20:53:18,546 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2023-11-22 20:53:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2023-11-22 20:53:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2023-11-22 20:53:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-22 20:53:18,547 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-22 20:53:18,547 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2023-11-22 20:53:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2023-11-22 20:53:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2023-11-22 20:53:18,548 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2023-11-22 20:53:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-22 20:53:18,548 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-22 20:53:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-22 20:53:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2023-11-22 20:53:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2023-11-22 20:53:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-22 20:53:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-22 20:53:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2023-11-22 20:53:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2023-11-22 20:53:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2023-11-22 20:53:18,549 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2023-11-22 20:53:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2023-11-22 20:53:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2023-11-22 20:53:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2023-11-22 20:53:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2023-11-22 20:53:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-22 20:53:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-22 20:53:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-22 20:53:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2023-11-22 20:53:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2023-11-22 20:53:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2023-11-22 20:53:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-22 20:53:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-22 20:53:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-22 20:53:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2023-11-22 20:53:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2023-11-22 20:53:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2023-11-22 20:53:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-22 20:53:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-22 20:53:18,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-22 20:53:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2023-11-22 20:53:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2023-11-22 20:53:18,552 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2023-11-22 20:53:18,552 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2023-11-22 20:53:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2023-11-22 20:53:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2023-11-22 20:53:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2023-11-22 20:53:18,553 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2023-11-22 20:53:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-22 20:53:18,553 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2023-11-22 20:53:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2023-11-22 20:53:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2023-11-22 20:53:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2023-11-22 20:53:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2023-11-22 20:53:18,554 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2023-11-22 20:53:18,554 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2023-11-22 20:53:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2023-11-22 20:53:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2023-11-22 20:53:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2023-11-22 20:53:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-22 20:53:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-22 20:53:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2023-11-22 20:53:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2023-11-22 20:53:18,555 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-22 20:53:18,555 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-22 20:53:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2023-11-22 20:53:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2023-11-22 20:53:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2023-11-22 20:53:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2023-11-22 20:53:18,556 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2023-11-22 20:53:18,556 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2023-11-22 20:53:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-22 20:53:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2023-11-22 20:53:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2023-11-22 20:53:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2023-11-22 20:53:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2023-11-22 20:53:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2023-11-22 20:53:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-22 20:53:18,557 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-22 20:53:18,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-22 20:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock [2023-11-22 20:53:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock [2023-11-22 20:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2023-11-22 20:53:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2023-11-22 20:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-22 20:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2023-11-22 20:53:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2023-11-22 20:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-22 20:53:18,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-22 20:53:18,558 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2023-11-22 20:53:18,559 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2023-11-22 20:53:19,423 INFO L241 CfgBuilder]: Building ICFG [2023-11-22 20:53:19,426 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-22 20:53:28,294 INFO L282 CfgBuilder]: Performing block encoding [2023-11-22 20:53:28,525 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-22 20:53:28,525 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-22 20:53:28,528 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:53:28 BoogieIcfgContainer [2023-11-22 20:53:28,528 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-22 20:53:28,531 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-22 20:53:28,531 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-22 20:53:28,534 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-22 20:53:28,534 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:53:14" (1/3) ... [2023-11-22 20:53:28,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e16d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:53:28, skipping insertion in model container [2023-11-22 20:53:28,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:53:17" (2/3) ... [2023-11-22 20:53:28,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13e16d89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:53:28, skipping insertion in model container [2023-11-22 20:53:28,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:53:28" (3/3) ... [2023-11-22 20:53:28,538 INFO L112 eAbstractionObserver]: Analyzing ICFG main0_drivers--media--dvb-frontends--stv090x-ko---32_7a--linux-3.7.3.i [2023-11-22 20:53:28,554 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-22 20:53:28,554 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-22 20:53:28,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-22 20:53:28,673 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;@7200e7f7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-22 20:53:28,674 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-22 20:53:28,691 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) [2023-11-22 20:53:28,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-22 20:53:28,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:28,697 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-22 20:53:28,697 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:28,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:28,701 INFO L85 PathProgramCache]: Analyzing trace with hash -28703905, now seen corresponding path program 1 times [2023-11-22 20:53:28,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:28,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263465525] [2023-11-22 20:53:28,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:28,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 20:53:29,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:29,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263465525] [2023-11-22 20:53:29,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263465525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:29,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:29,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 20:53:29,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593945560] [2023-11-22 20:53:29,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:29,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 20:53:29,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 20:53:29,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 20:53:29,879 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) [2023-11-22 20:53:30,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:30,482 INFO L93 Difference]: Finished difference Result 12749 states and 20910 transitions. [2023-11-22 20:53:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 20:53:30,484 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 [2023-11-22 20:53:30,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:30,544 INFO L225 Difference]: With dead ends: 12749 [2023-11-22 20:53:30,545 INFO L226 Difference]: Without dead ends: 6372 [2023-11-22 20:53:30,623 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 [2023-11-22 20:53:30,626 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, 0.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:30,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10348 Valid, 10251 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-22 20:53:30,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6372 states. [2023-11-22 20:53:31,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6372 to 6372. [2023-11-22 20:53:31,266 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) [2023-11-22 20:53:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6372 states to 6372 states and 10349 transitions. [2023-11-22 20:53:31,339 INFO L78 Accepts]: Start accepts. Automaton has 6372 states and 10349 transitions. Word has length 6 [2023-11-22 20:53:31,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:31,340 INFO L495 AbstractCegarLoop]: Abstraction has 6372 states and 10349 transitions. [2023-11-22 20:53:31,340 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) [2023-11-22 20:53:31,340 INFO L276 IsEmpty]: Start isEmpty. Operand 6372 states and 10349 transitions. [2023-11-22 20:53:31,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-22 20:53:31,340 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:31,341 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:31,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-22 20:53:31,341 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:31,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:31,342 INFO L85 PathProgramCache]: Analyzing trace with hash -892951178, now seen corresponding path program 1 times [2023-11-22 20:53:31,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:31,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094147691] [2023-11-22 20:53:31,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:31,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:31,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 20:53:32,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:32,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094147691] [2023-11-22 20:53:32,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094147691] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:32,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:32,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 20:53:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814434872] [2023-11-22 20:53:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 20:53:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 20:53:32,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 20:53:32,088 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) [2023-11-22 20:53:32,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:32,876 INFO L93 Difference]: Finished difference Result 12846 states and 20860 transitions. [2023-11-22 20:53:32,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 20:53:32,877 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 [2023-11-22 20:53:32,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:32,931 INFO L225 Difference]: With dead ends: 12846 [2023-11-22 20:53:32,931 INFO L226 Difference]: Without dead ends: 6475 [2023-11-22 20:53:32,997 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 [2023-11-22 20:53:32,998 INFO L413 NwaCegarLoop]: 10249 mSDtfsCounter, 9893 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:32,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9893 Valid, 10840 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 20:53:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6475 states. [2023-11-22 20:53:33,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 6472. [2023-11-22 20:53:33,830 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) [2023-11-22 20:53:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6472 states to 6472 states and 10499 transitions. [2023-11-22 20:53:33,897 INFO L78 Accepts]: Start accepts. Automaton has 6472 states and 10499 transitions. Word has length 7 [2023-11-22 20:53:33,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:33,897 INFO L495 AbstractCegarLoop]: Abstraction has 6472 states and 10499 transitions. [2023-11-22 20:53:33,898 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) [2023-11-22 20:53:33,898 INFO L276 IsEmpty]: Start isEmpty. Operand 6472 states and 10499 transitions. [2023-11-22 20:53:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-22 20:53:33,898 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:33,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-22 20:53:33,899 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:33,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:33,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1914807998, now seen corresponding path program 1 times [2023-11-22 20:53:33,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:33,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203001947] [2023-11-22 20:53:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:34,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 20:53:34,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:34,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203001947] [2023-11-22 20:53:34,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203001947] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:34,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 20:53:34,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942742521] [2023-11-22 20:53:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:34,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 20:53:34,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 20:53:34,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 20:53:34,526 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) [2023-11-22 20:53:34,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:34,908 INFO L93 Difference]: Finished difference Result 6474 states and 10500 transitions. [2023-11-22 20:53:34,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 20:53:34,908 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 [2023-11-22 20:53:34,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:34,955 INFO L225 Difference]: With dead ends: 6474 [2023-11-22 20:53:34,956 INFO L226 Difference]: Without dead ends: 6471 [2023-11-22 20:53:34,966 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 [2023-11-22 20:53:34,970 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 [2023-11-22 20:53:34,970 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] [2023-11-22 20:53:34,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2023-11-22 20:53:35,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 6471. [2023-11-22 20:53:35,673 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) [2023-11-22 20:53:35,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6471 states to 6471 states and 10497 transitions. [2023-11-22 20:53:35,709 INFO L78 Accepts]: Start accepts. Automaton has 6471 states and 10497 transitions. Word has length 8 [2023-11-22 20:53:35,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:35,709 INFO L495 AbstractCegarLoop]: Abstraction has 6471 states and 10497 transitions. [2023-11-22 20:53:35,709 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) [2023-11-22 20:53:35,709 INFO L276 IsEmpty]: Start isEmpty. Operand 6471 states and 10497 transitions. [2023-11-22 20:53:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-22 20:53:35,710 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:35,710 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:35,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-22 20:53:35,710 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:35,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:35,711 INFO L85 PathProgramCache]: Analyzing trace with hash 767373817, now seen corresponding path program 1 times [2023-11-22 20:53:35,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:35,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467727714] [2023-11-22 20:53:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:35,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:36,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 20:53:36,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:36,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467727714] [2023-11-22 20:53:36,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467727714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:36,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:36,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 20:53:36,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070988874] [2023-11-22 20:53:36,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:36,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 20:53:36,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:36,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 20:53:36,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 20:53:36,029 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) [2023-11-22 20:53:36,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:36,384 INFO L93 Difference]: Finished difference Result 6473 states and 10498 transitions. [2023-11-22 20:53:36,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 20:53:36,385 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 [2023-11-22 20:53:36,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:36,465 INFO L225 Difference]: With dead ends: 6473 [2023-11-22 20:53:36,465 INFO L226 Difference]: Without dead ends: 6470 [2023-11-22 20:53:36,473 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 [2023-11-22 20:53:36,478 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 [2023-11-22 20:53:36,479 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] [2023-11-22 20:53:36,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2023-11-22 20:53:37,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 6470. [2023-11-22 20:53:37,245 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) [2023-11-22 20:53:37,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6470 states to 6470 states and 10495 transitions. [2023-11-22 20:53:37,281 INFO L78 Accepts]: Start accepts. Automaton has 6470 states and 10495 transitions. Word has length 9 [2023-11-22 20:53:37,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:37,281 INFO L495 AbstractCegarLoop]: Abstraction has 6470 states and 10495 transitions. [2023-11-22 20:53:37,281 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) [2023-11-22 20:53:37,281 INFO L276 IsEmpty]: Start isEmpty. Operand 6470 states and 10495 transitions. [2023-11-22 20:53:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-22 20:53:37,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:37,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:37,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-22 20:53:37,282 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:37,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:37,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1984330971, now seen corresponding path program 1 times [2023-11-22 20:53:37,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:37,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646817105] [2023-11-22 20:53:37,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:37,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:37,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 20:53:37,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:37,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646817105] [2023-11-22 20:53:37,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646817105] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:37,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:37,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 20:53:37,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908828895] [2023-11-22 20:53:37,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:37,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 20:53:37,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 20:53:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 20:53:37,581 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) [2023-11-22 20:53:38,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:38,063 INFO L93 Difference]: Finished difference Result 6472 states and 10496 transitions. [2023-11-22 20:53:38,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 20:53:38,063 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 [2023-11-22 20:53:38,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:38,096 INFO L225 Difference]: With dead ends: 6472 [2023-11-22 20:53:38,097 INFO L226 Difference]: Without dead ends: 6469 [2023-11-22 20:53:38,106 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 [2023-11-22 20:53:38,106 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 [2023-11-22 20:53:38,107 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] [2023-11-22 20:53:38,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6469 states. [2023-11-22 20:53:38,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6469 to 6469. [2023-11-22 20:53:38,894 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) [2023-11-22 20:53:38,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6469 states to 6469 states and 10493 transitions. [2023-11-22 20:53:38,928 INFO L78 Accepts]: Start accepts. Automaton has 6469 states and 10493 transitions. Word has length 10 [2023-11-22 20:53:38,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:38,928 INFO L495 AbstractCegarLoop]: Abstraction has 6469 states and 10493 transitions. [2023-11-22 20:53:38,929 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) [2023-11-22 20:53:38,929 INFO L276 IsEmpty]: Start isEmpty. Operand 6469 states and 10493 transitions. [2023-11-22 20:53:38,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-22 20:53:38,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:38,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-22 20:53:38,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-22 20:53:38,930 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:38,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:38,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1387828612, now seen corresponding path program 1 times [2023-11-22 20:53:38,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:38,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311195587] [2023-11-22 20:53:38,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:38,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:39,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:39,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-22 20:53:39,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:39,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311195587] [2023-11-22 20:53:39,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311195587] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:39,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:39,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-22 20:53:39,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777266828] [2023-11-22 20:53:39,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:39,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-22 20:53:39,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:39,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-22 20:53:39,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-22 20:53:39,202 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) [2023-11-22 20:53:40,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:40,597 INFO L93 Difference]: Finished difference Result 19392 states and 31592 transitions. [2023-11-22 20:53:40,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-22 20:53:40,598 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 [2023-11-22 20:53:40,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:40,694 INFO L225 Difference]: With dead ends: 19392 [2023-11-22 20:53:40,695 INFO L226 Difference]: Without dead ends: 12918 [2023-11-22 20:53:40,765 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 [2023-11-22 20:53:40,766 INFO L413 NwaCegarLoop]: 10385 mSDtfsCounter, 10361 mSDsluCounter, 10261 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10361 SdHoareTripleChecker+Valid, 20646 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:40,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10361 Valid, 20646 Invalid, 207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-22 20:53:40,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12918 states. [2023-11-22 20:53:42,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12918 to 12909. [2023-11-22 20:53:42,215 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) [2023-11-22 20:53:42,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12909 states to 12909 states and 21032 transitions. [2023-11-22 20:53:42,305 INFO L78 Accepts]: Start accepts. Automaton has 12909 states and 21032 transitions. Word has length 11 [2023-11-22 20:53:42,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:42,305 INFO L495 AbstractCegarLoop]: Abstraction has 12909 states and 21032 transitions. [2023-11-22 20:53:42,305 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) [2023-11-22 20:53:42,306 INFO L276 IsEmpty]: Start isEmpty. Operand 12909 states and 21032 transitions. [2023-11-22 20:53:42,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-22 20:53:42,318 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:42,319 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] [2023-11-22 20:53:42,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-22 20:53:42,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:42,319 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:42,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1038754289, now seen corresponding path program 1 times [2023-11-22 20:53:42,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:42,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379809712] [2023-11-22 20:53:42,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:42,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:42,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:53:43,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-22 20:53:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-22 20:53:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 20:53:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 20:53:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 20:53:43,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:43,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379809712] [2023-11-22 20:53:43,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379809712] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:43,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:43,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 20:53:43,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142103827] [2023-11-22 20:53:43,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:43,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 20:53:43,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:43,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 20:53:43,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 20:53:43,174 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) [2023-11-22 20:53:50,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:53:50,614 INFO L93 Difference]: Finished difference Result 26099 states and 42623 transitions. [2023-11-22 20:53:50,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 20:53:50,615 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 [2023-11-22 20:53:50,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:53:50,680 INFO L225 Difference]: With dead ends: 26099 [2023-11-22 20:53:50,681 INFO L226 Difference]: Without dead ends: 13191 [2023-11-22 20:53:50,754 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 [2023-11-22 20:53:50,755 INFO L413 NwaCegarLoop]: 9990 mSDtfsCounter, 518 mSDsluCounter, 25422 mSDsCounter, 0 mSdLazyCounter, 4023 mSolverCounterSat, 1716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 549 SdHoareTripleChecker+Valid, 35412 SdHoareTripleChecker+Invalid, 5739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1716 IncrementalHoareTripleChecker+Valid, 4023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2023-11-22 20:53:50,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [549 Valid, 35412 Invalid, 5739 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1716 Valid, 4023 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2023-11-22 20:53:50,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13191 states. [2023-11-22 20:53:52,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13191 to 13067. [2023-11-22 20:53:52,219 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) [2023-11-22 20:53:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13067 states to 13067 states and 21278 transitions. [2023-11-22 20:53:52,307 INFO L78 Accepts]: Start accepts. Automaton has 13067 states and 21278 transitions. Word has length 65 [2023-11-22 20:53:52,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:53:52,308 INFO L495 AbstractCegarLoop]: Abstraction has 13067 states and 21278 transitions. [2023-11-22 20:53:52,308 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) [2023-11-22 20:53:52,309 INFO L276 IsEmpty]: Start isEmpty. Operand 13067 states and 21278 transitions. [2023-11-22 20:53:52,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-22 20:53:52,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:53:52,313 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] [2023-11-22 20:53:52,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-22 20:53:52,314 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:53:52,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:53:52,314 INFO L85 PathProgramCache]: Analyzing trace with hash 391477233, now seen corresponding path program 1 times [2023-11-22 20:53:52,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:53:52,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259978235] [2023-11-22 20:53:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:53:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:53:52,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:53:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 20:53:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 20:53:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 20:53:52,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 20:53:52,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:53:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 20:53:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 20:53:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:53:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:53:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 20:53:52,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:53:52,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259978235] [2023-11-22 20:53:52,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259978235] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:53:52,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:53:52,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 20:53:52,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483389657] [2023-11-22 20:53:52,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:53:52,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 20:53:52,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:53:52,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 20:53:52,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 20:53:52,759 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) [2023-11-22 20:54:06,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:54:06,407 INFO L93 Difference]: Finished difference Result 31542 states and 51594 transitions. [2023-11-22 20:54:06,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 20:54:06,408 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 [2023-11-22 20:54:06,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:54:06,505 INFO L225 Difference]: With dead ends: 31542 [2023-11-22 20:54:06,506 INFO L226 Difference]: Without dead ends: 18476 [2023-11-22 20:54:06,587 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 [2023-11-22 20:54:06,589 INFO L413 NwaCegarLoop]: 6472 mSDtfsCounter, 6464 mSDsluCounter, 14398 mSDsCounter, 0 mSdLazyCounter, 13708 mSolverCounterSat, 4419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7736 SdHoareTripleChecker+Valid, 20870 SdHoareTripleChecker+Invalid, 18127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4419 IncrementalHoareTripleChecker+Valid, 13708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2023-11-22 20:54:06,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7736 Valid, 20870 Invalid, 18127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4419 Valid, 13708 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2023-11-22 20:54:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18476 states. [2023-11-22 20:54:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18476 to 13069. [2023-11-22 20:54:08,723 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) [2023-11-22 20:54:08,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13069 states to 13069 states and 21280 transitions. [2023-11-22 20:54:08,819 INFO L78 Accepts]: Start accepts. Automaton has 13069 states and 21280 transitions. Word has length 67 [2023-11-22 20:54:08,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:54:08,819 INFO L495 AbstractCegarLoop]: Abstraction has 13069 states and 21280 transitions. [2023-11-22 20:54:08,819 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) [2023-11-22 20:54:08,820 INFO L276 IsEmpty]: Start isEmpty. Operand 13069 states and 21280 transitions. [2023-11-22 20:54:08,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-22 20:54:08,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:54:08,825 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] [2023-11-22 20:54:08,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-22 20:54:08,825 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:54:08,826 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:54:08,826 INFO L85 PathProgramCache]: Analyzing trace with hash -995308177, now seen corresponding path program 1 times [2023-11-22 20:54:08,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:54:08,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48855098] [2023-11-22 20:54:08,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:08,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:54:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:09,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:54:09,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:09,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 20:54:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:09,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 20:54:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:09,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 20:54:09,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:09,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 20:54:09,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:09,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:09,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:09,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 20:54:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:10,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 20:54:10,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:10,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:54:10,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-22 20:54:10,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:54:10,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48855098] [2023-11-22 20:54:10,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48855098] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:54:10,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:54:10,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 20:54:10,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360503106] [2023-11-22 20:54:10,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:54:10,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:54:10,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:54:10,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:54:10,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-22 20:54:10,116 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) [2023-11-22 20:54:29,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:54:29,216 INFO L93 Difference]: Finished difference Result 31548 states and 54296 transitions. [2023-11-22 20:54:29,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-22 20:54:29,217 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 [2023-11-22 20:54:29,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:54:29,328 INFO L225 Difference]: With dead ends: 31548 [2023-11-22 20:54:29,329 INFO L226 Difference]: Without dead ends: 18480 [2023-11-22 20:54:29,439 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 [2023-11-22 20:54:29,441 INFO L413 NwaCegarLoop]: 6510 mSDtfsCounter, 6462 mSDsluCounter, 26891 mSDsCounter, 0 mSdLazyCounter, 22160 mSolverCounterSat, 4400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7735 SdHoareTripleChecker+Valid, 33401 SdHoareTripleChecker+Invalid, 26560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4400 IncrementalHoareTripleChecker+Valid, 22160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.8s IncrementalHoareTripleChecker+Time [2023-11-22 20:54:29,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7735 Valid, 33401 Invalid, 26560 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4400 Valid, 22160 Invalid, 0 Unknown, 0 Unchecked, 17.8s Time] [2023-11-22 20:54:29,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18480 states. [2023-11-22 20:54:31,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18480 to 13073. [2023-11-22 20:54:31,434 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) [2023-11-22 20:54:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13073 states to 13073 states and 21284 transitions. [2023-11-22 20:54:31,526 INFO L78 Accepts]: Start accepts. Automaton has 13073 states and 21284 transitions. Word has length 67 [2023-11-22 20:54:31,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:54:31,526 INFO L495 AbstractCegarLoop]: Abstraction has 13073 states and 21284 transitions. [2023-11-22 20:54:31,526 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) [2023-11-22 20:54:31,527 INFO L276 IsEmpty]: Start isEmpty. Operand 13073 states and 21284 transitions. [2023-11-22 20:54:31,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-22 20:54:31,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:54:31,532 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] [2023-11-22 20:54:31,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-22 20:54:31,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:54:31,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:54:31,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1639168357, now seen corresponding path program 1 times [2023-11-22 20:54:31,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:54:31,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929356066] [2023-11-22 20:54:31,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:31,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:54:31,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:54:32,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 20:54:32,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 20:54:32,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 20:54:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 20:54:32,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 20:54:32,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:54:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:54:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 20:54:32,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:54:32,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929356066] [2023-11-22 20:54:32,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929356066] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:54:32,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:54:32,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 20:54:32,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839362378] [2023-11-22 20:54:32,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:54:32,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:54:32,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:54:32,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:54:32,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:54:32,637 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) [2023-11-22 20:54:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:54:54,523 INFO L93 Difference]: Finished difference Result 31830 states and 54426 transitions. [2023-11-22 20:54:54,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:54:54,524 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 [2023-11-22 20:54:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:54:54,627 INFO L225 Difference]: With dead ends: 31830 [2023-11-22 20:54:54,627 INFO L226 Difference]: Without dead ends: 18758 [2023-11-22 20:54:54,697 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 [2023-11-22 20:54:54,698 INFO L413 NwaCegarLoop]: 6616 mSDtfsCounter, 6619 mSDsluCounter, 33497 mSDsCounter, 0 mSdLazyCounter, 26534 mSolverCounterSat, 4443 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8555 SdHoareTripleChecker+Valid, 40113 SdHoareTripleChecker+Invalid, 30977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4443 IncrementalHoareTripleChecker+Valid, 26534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2023-11-22 20:54:54,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8555 Valid, 40113 Invalid, 30977 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4443 Valid, 26534 Invalid, 0 Unknown, 0 Unchecked, 20.5s Time] [2023-11-22 20:54:54,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18758 states. [2023-11-22 20:54:58,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18758 to 13081. [2023-11-22 20:54:58,093 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) [2023-11-22 20:54:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13081 states to 13081 states and 21330 transitions. [2023-11-22 20:54:58,198 INFO L78 Accepts]: Start accepts. Automaton has 13081 states and 21330 transitions. Word has length 68 [2023-11-22 20:54:58,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:54:58,200 INFO L495 AbstractCegarLoop]: Abstraction has 13081 states and 21330 transitions. [2023-11-22 20:54:58,200 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) [2023-11-22 20:54:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 13081 states and 21330 transitions. [2023-11-22 20:54:58,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-22 20:54:58,206 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:54:58,207 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] [2023-11-22 20:54:58,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-22 20:54:58,207 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:54:58,207 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:54:58,207 INFO L85 PathProgramCache]: Analyzing trace with hash -127302664, now seen corresponding path program 1 times [2023-11-22 20:54:58,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:54:58,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881912729] [2023-11-22 20:54:58,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:54:58,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:54:58,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:54:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-22 20:54:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 20:54:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-22 20:54:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 20:54:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:54:58,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-22 20:54:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:54:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:54:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:54:58,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 20:54:58,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:54:58,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881912729] [2023-11-22 20:54:58,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881912729] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:54:58,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:54:58,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-22 20:54:58,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123329133] [2023-11-22 20:54:58,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:54:58,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-22 20:54:58,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:54:58,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-22 20:54:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-22 20:54:58,908 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) [2023-11-22 20:55:16,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:16,202 INFO L93 Difference]: Finished difference Result 18491 states and 30335 transitions. [2023-11-22 20:55:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-22 20:55:16,202 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 [2023-11-22 20:55:16,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:16,305 INFO L225 Difference]: With dead ends: 18491 [2023-11-22 20:55:16,305 INFO L226 Difference]: Without dead ends: 18488 [2023-11-22 20:55:16,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-22 20:55:16,326 INFO L413 NwaCegarLoop]: 6457 mSDtfsCounter, 6979 mSDsluCounter, 13193 mSDsCounter, 0 mSdLazyCounter, 14796 mSolverCounterSat, 4480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s 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, 16.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:16,326 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8295 Valid, 19650 Invalid, 19276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4480 Valid, 14796 Invalid, 0 Unknown, 0 Unchecked, 16.2s Time] [2023-11-22 20:55:16,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18488 states. [2023-11-22 20:55:18,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18488 to 13081. [2023-11-22 20:55:18,507 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) [2023-11-22 20:55:18,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13081 states to 13081 states and 21328 transitions. [2023-11-22 20:55:18,613 INFO L78 Accepts]: Start accepts. Automaton has 13081 states and 21328 transitions. Word has length 70 [2023-11-22 20:55:18,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:18,614 INFO L495 AbstractCegarLoop]: Abstraction has 13081 states and 21328 transitions. [2023-11-22 20:55:18,614 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) [2023-11-22 20:55:18,614 INFO L276 IsEmpty]: Start isEmpty. Operand 13081 states and 21328 transitions. [2023-11-22 20:55:18,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-22 20:55:18,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:18,623 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] [2023-11-22 20:55:18,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-22 20:55:18,623 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:18,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:18,624 INFO L85 PathProgramCache]: Analyzing trace with hash -328144219, now seen corresponding path program 1 times [2023-11-22 20:55:18,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:18,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674406843] [2023-11-22 20:55:18,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:18,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:18,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:55:19,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:55:19,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-22 20:55:19,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-22 20:55:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-22 20:55:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-22 20:55:19,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:55:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:55:19,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:19,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-22 20:55:19,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:19,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674406843] [2023-11-22 20:55:19,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674406843] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:19,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:19,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-22 20:55:19,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576157970] [2023-11-22 20:55:19,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:19,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-22 20:55:19,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:19,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-22 20:55:19,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-22 20:55:19,793 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) [2023-11-22 20:55:30,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:30,784 INFO L93 Difference]: Finished difference Result 13611 states and 22345 transitions. [2023-11-22 20:55:30,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-22 20:55:30,784 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 [2023-11-22 20:55:30,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:30,861 INFO L225 Difference]: With dead ends: 13611 [2023-11-22 20:55:30,861 INFO L226 Difference]: Without dead ends: 13604 [2023-11-22 20:55:30,877 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 [2023-11-22 20:55:30,877 INFO L413 NwaCegarLoop]: 9836 mSDtfsCounter, 563 mSDsluCounter, 39118 mSDsCounter, 0 mSdLazyCounter, 9267 mSolverCounterSat, 1689 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 48954 SdHoareTripleChecker+Invalid, 10956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1689 IncrementalHoareTripleChecker+Valid, 9267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:30,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 48954 Invalid, 10956 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1689 Valid, 9267 Invalid, 0 Unknown, 0 Unchecked, 10.1s Time] [2023-11-22 20:55:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13604 states. [2023-11-22 20:55:32,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13604 to 13089. [2023-11-22 20:55:32,504 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) [2023-11-22 20:55:32,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13089 states to 13089 states and 21370 transitions. [2023-11-22 20:55:32,612 INFO L78 Accepts]: Start accepts. Automaton has 13089 states and 21370 transitions. Word has length 76 [2023-11-22 20:55:32,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:32,613 INFO L495 AbstractCegarLoop]: Abstraction has 13089 states and 21370 transitions. [2023-11-22 20:55:32,613 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) [2023-11-22 20:55:32,613 INFO L276 IsEmpty]: Start isEmpty. Operand 13089 states and 21370 transitions. [2023-11-22 20:55:32,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-22 20:55:32,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:32,625 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] [2023-11-22 20:55:32,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-22 20:55:32,625 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:32,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:32,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1451949488, now seen corresponding path program 1 times [2023-11-22 20:55:32,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:32,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113507334] [2023-11-22 20:55:32,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:32,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:55:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:55:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:33,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-22 20:55:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:55:33,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:55:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:55:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 20:55:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:33,178 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 20:55:33,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:33,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113507334] [2023-11-22 20:55:33,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113507334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:33,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:33,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-22 20:55:33,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513015577] [2023-11-22 20:55:33,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:33,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:55:33,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:33,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:55:33,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-22 20:55:33,180 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) [2023-11-22 20:55:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:39,936 INFO L93 Difference]: Finished difference Result 26305 states and 43131 transitions. [2023-11-22 20:55:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 20:55:39,937 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 [2023-11-22 20:55:39,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:40,162 INFO L225 Difference]: With dead ends: 26305 [2023-11-22 20:55:40,162 INFO L226 Difference]: Without dead ends: 13217 [2023-11-22 20:55:40,233 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 [2023-11-22 20:55:40,233 INFO L413 NwaCegarLoop]: 10003 mSDtfsCounter, 344 mSDsluCounter, 15911 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 1642 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s 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, 5.9s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:40,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 25914 Invalid, 4827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1642 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-11-22 20:55:40,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13217 states. [2023-11-22 20:55:41,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13217 to 13093. [2023-11-22 20:55:41,748 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) [2023-11-22 20:55:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13093 states to 13093 states and 21374 transitions. [2023-11-22 20:55:41,838 INFO L78 Accepts]: Start accepts. Automaton has 13093 states and 21374 transitions. Word has length 78 [2023-11-22 20:55:41,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:41,839 INFO L495 AbstractCegarLoop]: Abstraction has 13093 states and 21374 transitions. [2023-11-22 20:55:41,839 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) [2023-11-22 20:55:41,839 INFO L276 IsEmpty]: Start isEmpty. Operand 13093 states and 21374 transitions. [2023-11-22 20:55:41,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-22 20:55:41,845 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:41,845 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] [2023-11-22 20:55:41,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-22 20:55:41,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:41,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:41,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1107947618, now seen corresponding path program 1 times [2023-11-22 20:55:41,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:41,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95371656] [2023-11-22 20:55:41,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:41,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:55:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:55:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-22 20:55:43,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:55:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:55:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:55:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 20:55:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 20:55:43,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:43,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95371656] [2023-11-22 20:55:43,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95371656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:43,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:43,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 20:55:43,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989930216] [2023-11-22 20:55:43,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:43,390 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:55:43,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:43,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:55:43,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:55:43,391 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) [2023-11-22 20:55:53,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:55:53,767 INFO L93 Difference]: Finished difference Result 26642 states and 44416 transitions. [2023-11-22 20:55:53,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 20:55:53,767 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 [2023-11-22 20:55:53,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:55:53,854 INFO L225 Difference]: With dead ends: 26642 [2023-11-22 20:55:53,854 INFO L226 Difference]: Without dead ends: 13550 [2023-11-22 20:55:53,943 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 [2023-11-22 20:55:53,943 INFO L413 NwaCegarLoop]: 10071 mSDtfsCounter, 501 mSDsluCounter, 54512 mSDsCounter, 0 mSdLazyCounter, 6373 mSolverCounterSat, 1681 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s 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, 9.2s IncrementalHoareTripleChecker+Time [2023-11-22 20:55:53,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 64583 Invalid, 8054 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1681 Valid, 6373 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-22 20:55:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13550 states. [2023-11-22 20:55:55,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13550 to 13231. [2023-11-22 20:55:55,741 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) [2023-11-22 20:55:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13231 states to 13231 states and 22114 transitions. [2023-11-22 20:55:55,845 INFO L78 Accepts]: Start accepts. Automaton has 13231 states and 22114 transitions. Word has length 78 [2023-11-22 20:55:55,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:55:55,846 INFO L495 AbstractCegarLoop]: Abstraction has 13231 states and 22114 transitions. [2023-11-22 20:55:55,846 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) [2023-11-22 20:55:55,846 INFO L276 IsEmpty]: Start isEmpty. Operand 13231 states and 22114 transitions. [2023-11-22 20:55:55,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-11-22 20:55:55,852 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:55:55,852 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] [2023-11-22 20:55:55,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-22 20:55:55,853 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:55:55,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:55:55,853 INFO L85 PathProgramCache]: Analyzing trace with hash -228917530, now seen corresponding path program 1 times [2023-11-22 20:55:55,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:55:55,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791471974] [2023-11-22 20:55:55,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:55:55,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:55:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:56,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:55:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:55:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:55:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:55:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:57,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-22 20:55:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-22 20:55:57,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:57,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:55:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:57,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:55:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:57,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-22 20:55:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:55:57,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 20:55:57,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:55:57,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791471974] [2023-11-22 20:55:57,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791471974] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:55:57,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:55:57,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-22 20:55:57,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362073498] [2023-11-22 20:55:57,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:55:57,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-22 20:55:57,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:55:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-22 20:55:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:55:57,090 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) [2023-11-22 20:56:06,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:56:06,879 INFO L93 Difference]: Finished difference Result 26912 states and 45374 transitions. [2023-11-22 20:56:06,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-22 20:56:06,880 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 [2023-11-22 20:56:06,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:56:06,953 INFO L225 Difference]: With dead ends: 26912 [2023-11-22 20:56:06,953 INFO L226 Difference]: Without dead ends: 13682 [2023-11-22 20:56:07,037 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 [2023-11-22 20:56:07,037 INFO L413 NwaCegarLoop]: 10123 mSDtfsCounter, 501 mSDsluCounter, 54713 mSDsCounter, 0 mSdLazyCounter, 6386 mSolverCounterSat, 1671 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s 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, 8.6s IncrementalHoareTripleChecker+Time [2023-11-22 20:56:07,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 64836 Invalid, 8057 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1671 Valid, 6386 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2023-11-22 20:56:07,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13682 states. [2023-11-22 20:56:08,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13682 to 13235. [2023-11-22 20:56:08,853 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) [2023-11-22 20:56:08,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13235 states to 13235 states and 22118 transitions. [2023-11-22 20:56:08,958 INFO L78 Accepts]: Start accepts. Automaton has 13235 states and 22118 transitions. Word has length 78 [2023-11-22 20:56:08,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:56:08,959 INFO L495 AbstractCegarLoop]: Abstraction has 13235 states and 22118 transitions. [2023-11-22 20:56:08,959 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) [2023-11-22 20:56:08,959 INFO L276 IsEmpty]: Start isEmpty. Operand 13235 states and 22118 transitions. [2023-11-22 20:56:08,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-22 20:56:08,965 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:56:08,965 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] [2023-11-22 20:56:08,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-22 20:56:08,966 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:56:08,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:56:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1626162821, now seen corresponding path program 1 times [2023-11-22 20:56:08,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:56:08,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777862580] [2023-11-22 20:56:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:56:08,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:56:09,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:56:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:56:12,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:56:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:56:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-22 20:56:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-22 20:56:12,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:56:12,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:56:12,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-22 20:56:12,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:12,583 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 20:56:12,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:56:12,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777862580] [2023-11-22 20:56:12,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777862580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:56:12,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:56:12,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 20:56:12,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155735140] [2023-11-22 20:56:12,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:56:12,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 20:56:12,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:56:12,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 20:56:12,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 20:56:12,589 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) [2023-11-22 20:56:26,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:56:26,074 INFO L93 Difference]: Finished difference Result 27495 states and 46226 transitions. [2023-11-22 20:56:26,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 20:56:26,075 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 [2023-11-22 20:56:26,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:56:26,185 INFO L225 Difference]: With dead ends: 27495 [2023-11-22 20:56:26,185 INFO L226 Difference]: Without dead ends: 14261 [2023-11-22 20:56:26,510 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 [2023-11-22 20:56:26,511 INFO L413 NwaCegarLoop]: 9841 mSDtfsCounter, 1905 mSDsluCounter, 39626 mSDsCounter, 0 mSdLazyCounter, 14480 mSolverCounterSat, 3795 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1998 SdHoareTripleChecker+Valid, 49467 SdHoareTripleChecker+Invalid, 18275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3795 IncrementalHoareTripleChecker+Valid, 14480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:56:26,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1998 Valid, 49467 Invalid, 18275 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3795 Valid, 14480 Invalid, 0 Unknown, 0 Unchecked, 12.1s Time] [2023-11-22 20:56:26,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14261 states. [2023-11-22 20:56:28,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14261 to 13806. [2023-11-22 20:56:28,285 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) [2023-11-22 20:56:28,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13806 states to 13806 states and 23031 transitions. [2023-11-22 20:56:28,421 INFO L78 Accepts]: Start accepts. Automaton has 13806 states and 23031 transitions. Word has length 79 [2023-11-22 20:56:28,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:56:28,421 INFO L495 AbstractCegarLoop]: Abstraction has 13806 states and 23031 transitions. [2023-11-22 20:56:28,422 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) [2023-11-22 20:56:28,422 INFO L276 IsEmpty]: Start isEmpty. Operand 13806 states and 23031 transitions. [2023-11-22 20:56:28,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-22 20:56:28,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:56:28,431 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] [2023-11-22 20:56:28,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-22 20:56:28,432 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:56:28,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:56:28,433 INFO L85 PathProgramCache]: Analyzing trace with hash 365327259, now seen corresponding path program 1 times [2023-11-22 20:56:28,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:56:28,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840569110] [2023-11-22 20:56:28,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:56:28,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:56:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:29,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:56:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:29,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:56:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:29,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-22 20:56:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:29,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-22 20:56:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-22 20:56:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:56:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:29,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-22 20:56:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:29,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-22 20:56:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:30,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-22 20:56:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-22 20:56:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:30,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-22 20:56:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:30,142 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 20:56:30,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:56:30,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840569110] [2023-11-22 20:56:30,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840569110] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-22 20:56:30,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317496452] [2023-11-22 20:56:30,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:56:30,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-22 20:56:30,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-22 20:56:30,156 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) [2023-11-22 20:56:30,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-22 20:56:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:32,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 8491 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-22 20:56:32,097 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-22 20:56:32,149 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-22 20:56:32,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-22 20:56:32,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-22 20:56:32,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317496452] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-22 20:56:32,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-22 20:56:32,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7, 5] total 8 [2023-11-22 20:56:32,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162069572] [2023-11-22 20:56:32,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:56:32,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-22 20:56:32,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:56:32,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-22 20:56:32,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-22 20:56:32,219 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) [2023-11-22 20:56:33,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:56:33,356 INFO L93 Difference]: Finished difference Result 27072 states and 47109 transitions. [2023-11-22 20:56:33,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-22 20:56:33,356 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 [2023-11-22 20:56:33,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:56:33,457 INFO L225 Difference]: With dead ends: 27072 [2023-11-22 20:56:33,457 INFO L226 Difference]: Without dead ends: 13810 [2023-11-22 20:56:33,609 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 [2023-11-22 20:56:33,610 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, 0.4s IncrementalHoareTripleChecker+Time [2023-11-22 20:56:33,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 30712 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-22 20:56:33,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13810 states. [2023-11-22 20:56:35,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13810 to 13810. [2023-11-22 20:56:35,657 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) [2023-11-22 20:56:35,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13810 states to 13810 states and 23035 transitions. [2023-11-22 20:56:35,769 INFO L78 Accepts]: Start accepts. Automaton has 13810 states and 23035 transitions. Word has length 92 [2023-11-22 20:56:35,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:56:35,769 INFO L495 AbstractCegarLoop]: Abstraction has 13810 states and 23035 transitions. [2023-11-22 20:56:35,769 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) [2023-11-22 20:56:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 13810 states and 23035 transitions. [2023-11-22 20:56:35,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-22 20:56:35,779 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:56:35,780 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] [2023-11-22 20:56:35,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-22 20:56:36,000 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 [2023-11-22 20:56:36,000 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:56:36,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:56:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1806980432, now seen corresponding path program 1 times [2023-11-22 20:56:36,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:56:36,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897326154] [2023-11-22 20:56:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:56:36,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:56:36,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:38,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-22 20:56:38,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:38,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:56:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:38,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:56:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:56:39,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-22 20:56:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-22 20:56:39,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:56:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:56:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-22 20:56:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:56:39,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 20:56:39,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:56:39,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897326154] [2023-11-22 20:56:39,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897326154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:56:39,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:56:39,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-22 20:56:39,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125436793] [2023-11-22 20:56:39,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:56:39,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-22 20:56:39,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:56:39,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-22 20:56:39,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-11-22 20:56:39,163 INFO L87 Difference]: Start difference. First operand 13810 states and 23035 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 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) [2023-11-22 20:56:55,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-22 20:56:55,710 INFO L93 Difference]: Finished difference Result 27575 states and 46346 transitions. [2023-11-22 20:56:55,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-22 20:56:55,710 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 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 82 [2023-11-22 20:56:55,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-22 20:56:55,802 INFO L225 Difference]: With dead ends: 27575 [2023-11-22 20:56:55,802 INFO L226 Difference]: Without dead ends: 14265 [2023-11-22 20:56:55,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=281, Unknown=0, NotChecked=0, Total=380 [2023-11-22 20:56:55,902 INFO L413 NwaCegarLoop]: 9844 mSDtfsCounter, 1474 mSDsluCounter, 52973 mSDsCounter, 0 mSdLazyCounter, 19132 mSolverCounterSat, 1993 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1567 SdHoareTripleChecker+Valid, 62817 SdHoareTripleChecker+Invalid, 21125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1993 IncrementalHoareTripleChecker+Valid, 19132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2023-11-22 20:56:55,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1567 Valid, 62817 Invalid, 21125 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1993 Valid, 19132 Invalid, 0 Unknown, 0 Unchecked, 15.1s Time] [2023-11-22 20:56:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14265 states. [2023-11-22 20:56:57,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14265 to 13814. [2023-11-22 20:56:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13814 states, 10149 states have (on average 1.5059611784412257) internal successors, (15284), 10199 states have internal predecessors, (15284), 3504 states have call successors, (3504), 156 states have call predecessors, (3504), 160 states have return successors, (4239), 3462 states have call predecessors, (4239), 3497 states have call successors, (4239) [2023-11-22 20:56:57,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13814 states to 13814 states and 23027 transitions. [2023-11-22 20:56:57,834 INFO L78 Accepts]: Start accepts. Automaton has 13814 states and 23027 transitions. Word has length 82 [2023-11-22 20:56:57,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-22 20:56:57,834 INFO L495 AbstractCegarLoop]: Abstraction has 13814 states and 23027 transitions. [2023-11-22 20:56:57,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 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) [2023-11-22 20:56:57,835 INFO L276 IsEmpty]: Start isEmpty. Operand 13814 states and 23027 transitions. [2023-11-22 20:56:57,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-22 20:56:57,843 INFO L187 NwaCegarLoop]: Found error trace [2023-11-22 20:56:57,844 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, 1, 1] [2023-11-22 20:56:57,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-22 20:56:57,844 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-22 20:56:57,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-22 20:56:57,844 INFO L85 PathProgramCache]: Analyzing trace with hash 773965419, now seen corresponding path program 1 times [2023-11-22 20:56:57,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-22 20:56:57,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546203447] [2023-11-22 20:56:57,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-22 20:56:57,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-22 20:56:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:05,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:57:05,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:05,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-22 20:57:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-22 20:57:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:06,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-22 20:57:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-22 20:57:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:06,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-22 20:57:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-22 20:57:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-22 20:57:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-22 20:57:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-22 20:57:06,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-22 20:57:06,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-22 20:57:06,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546203447] [2023-11-22 20:57:06,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546203447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-22 20:57:06,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-22 20:57:06,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-11-22 20:57:06,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150642009] [2023-11-22 20:57:06,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-22 20:57:06,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-22 20:57:06,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-22 20:57:06,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-22 20:57:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-11-22 20:57:06,861 INFO L87 Difference]: Start difference. First operand 13814 states and 23027 transitions. Second operand has 15 states, 14 states have (on average 4.285714285714286) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Killed by 15