./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:01:01,185 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:01:01,251 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-06 23:01:01,257 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:01:01,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:01:01,283 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:01:01,284 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:01:01,284 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:01:01,285 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:01:01,286 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:01:01,287 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:01:01,287 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:01:01,288 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:01:01,289 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:01:01,289 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:01:01,290 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:01:01,291 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:01:01,291 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:01:01,292 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:01:01,293 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:01:01,293 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:01:01,294 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:01:01,295 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:01:01,295 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:01:01,296 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:01:01,296 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:01,297 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:01:01,298 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:01:01,298 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:01:01,299 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:01:01,299 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:01:01,300 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:01:01,300 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:01:01,301 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:01:01,301 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:01:01,302 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:01:01,302 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7d6844ab51374c8e656234daa6d7df2c3927c38bae9fcbeafc3fadf6f3b893b1 [2023-11-06 23:01:01,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:01:01,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:01:01,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:01:01,673 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:01:01,674 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:01:01,675 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-06 23:01:04,892 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:01:05,345 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:01:05,345 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-06 23:01:05,390 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/data/b9793e333/854ebaf710b34377b28cc04a6fc99ad3/FLAG9b05aea40 [2023-11-06 23:01:05,409 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/data/b9793e333/854ebaf710b34377b28cc04a6fc99ad3 [2023-11-06 23:01:05,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:01:05,417 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:01:05,421 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:05,422 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:01:05,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:01:05,429 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:05" (1/1) ... [2023-11-06 23:01:05,431 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1848ba8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:05, skipping insertion in model container [2023-11-06 23:01:05,431 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:01:05" (1/1) ... [2023-11-06 23:01:05,537 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:01:06,681 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2023-11-06 23:01:06,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:06,911 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:01:06,975 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("outb %b0, %w1": : "a" (value), "Nd" (port)); [1076] [2023-11-06 23:01:06,977 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("inb %w1, %b0": "=a" (value): "Nd" (port)); [1083] [2023-11-06 23:01:07,182 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i[132927,132940] [2023-11-06 23:01:07,205 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:01:07,371 WARN L672 CHandler]: The function strcspn is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:01:07,371 WARN L672 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-06 23:01:07,379 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:01:07,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07 WrapperNode [2023-11-06 23:01:07,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:01:07,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:07,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:01:07,382 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:01:07,389 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:07,586 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:07,839 INFO L138 Inliner]: procedures = 133, calls = 5580, calls flagged for inlining = 57, calls inlined = 51, statements flattened = 6709 [2023-11-06 23:01:07,840 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:01:07,841 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:01:07,841 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:01:07,841 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:01:07,852 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:07,852 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:07,938 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:07,939 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:08,079 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:08,105 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:08,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:08,163 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:08,295 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:01:08,296 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:01:08,297 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:01:08,297 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:01:08,298 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (1/1) ... [2023-11-06 23:01:08,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:01:08,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:01:08,355 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:01:08,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:01:08,412 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_while_busy [2023-11-06 23:01:08,412 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_while_busy [2023-11-06 23:01:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-06 23:01:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-06 23:01:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_wait_for_read [2023-11-06 23:01:08,413 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_wait_for_read [2023-11-06 23:01:08,413 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2023-11-06 23:01:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2023-11-06 23:01:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure platform_driver_unregister [2023-11-06 23:01:08,414 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_driver_unregister [2023-11-06 23:01:08,414 INFO L130 BoogieDeclarations]: Found specification of procedure dmi_get_system_info [2023-11-06 23:01:08,416 INFO L138 BoogieDeclarations]: Found implementation of procedure dmi_get_system_info [2023-11-06 23:01:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 23:01:08,416 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read [2023-11-06 23:01:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read [2023-11-06 23:01:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-06 23:01:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-06 23:01:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 23:01:08,417 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-06 23:01:08,417 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-06 23:01:08,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-06 23:01:08,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-06 23:01:08,419 INFO L130 BoogieDeclarations]: Found specification of procedure device_create_file [2023-11-06 23:01:08,419 INFO L138 BoogieDeclarations]: Found implementation of procedure device_create_file [2023-11-06 23:01:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2023-11-06 23:01:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_update_lock_of_abituguru3_data [2023-11-06 23:01:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_suspend [2023-11-06 23:01:08,420 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_suspend [2023-11-06 23:01:08,420 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_read_increment_offset [2023-11-06 23:01:08,421 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_read_increment_offset [2023-11-06 23:01:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-06 23:01:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure inb_p [2023-11-06 23:01:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure inb_p [2023-11-06 23:01:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-06 23:01:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-06 23:01:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:01:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-06 23:01:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 23:01:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_update_device [2023-11-06 23:01:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_update_device [2023-11-06 23:01:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-06 23:01:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 23:01:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2023-11-06 23:01:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2023-11-06 23:01:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-06 23:01:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2023-11-06 23:01:08,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_update_lock_of_abituguru3_data [2023-11-06 23:01:08,425 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-06 23:01:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-06 23:01:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2023-11-06 23:01:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2023-11-06 23:01:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2023-11-06 23:01:08,426 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2023-11-06 23:01:08,426 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2023-11-06 23:01:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:01:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2023-11-06 23:01:08,427 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2023-11-06 23:01:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:01:08,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:01:08,427 INFO L130 BoogieDeclarations]: Found specification of procedure abituguru3_resume [2023-11-06 23:01:08,428 INFO L138 BoogieDeclarations]: Found implementation of procedure abituguru3_resume [2023-11-06 23:01:08,428 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-11-06 23:01:08,428 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-11-06 23:01:08,881 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:01:08,883 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:01:23,637 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:01:23,661 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:01:23,662 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:01:23,666 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:23 BoogieIcfgContainer [2023-11-06 23:01:23,666 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:01:23,669 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:01:23,670 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:01:23,674 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:01:23,674 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:01:05" (1/3) ... [2023-11-06 23:01:23,675 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f506778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:23, skipping insertion in model container [2023-11-06 23:01:23,676 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:01:07" (2/3) ... [2023-11-06 23:01:23,677 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f506778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:01:23, skipping insertion in model container [2023-11-06 23:01:23,678 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:01:23" (3/3) ... [2023-11-06 23:01:23,679 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--hwmon--abituguru3.ko-main.cil.out.i [2023-11-06 23:01:23,703 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:01:23,703 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-06 23:01:23,807 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:01:23,816 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=LoopsAndPotentialCycles, 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;@37b90486, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:01:23,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-06 23:01:23,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 550 states, 424 states have (on average 1.4150943396226414) internal successors, (600), 433 states have internal predecessors, (600), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) [2023-11-06 23:01:23,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-06 23:01:23,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:23,851 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:23,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:23,861 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:23,862 INFO L85 PathProgramCache]: Analyzing trace with hash 2056568636, now seen corresponding path program 1 times [2023-11-06 23:01:23,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:23,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757304619] [2023-11-06 23:01:23,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:23,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:26,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-06 23:01:26,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:26,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:26,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:26,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757304619] [2023-11-06 23:01:26,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757304619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:26,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:26,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-06 23:01:26,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853680523] [2023-11-06 23:01:26,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:26,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:01:26,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:26,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:01:26,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:26,322 INFO L87 Difference]: Start difference. First operand has 550 states, 424 states have (on average 1.4150943396226414) internal successors, (600), 433 states have internal predecessors, (600), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 99 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:01:27,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:27,167 INFO L93 Difference]: Finished difference Result 1548 states and 2297 transitions. [2023-11-06 23:01:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:01:27,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-06 23:01:27,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:27,198 INFO L225 Difference]: With dead ends: 1548 [2023-11-06 23:01:27,199 INFO L226 Difference]: Without dead ends: 997 [2023-11-06 23:01:27,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:01:27,217 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 758 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:27,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1812 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:01:27,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2023-11-06 23:01:27,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 993. [2023-11-06 23:01:27,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 766 states have (on average 1.4177545691906006) internal successors, (1086), 776 states have internal predecessors, (1086), 179 states have call successors, (179), 48 states have call predecessors, (179), 47 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-11-06 23:01:27,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1439 transitions. [2023-11-06 23:01:27,392 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1439 transitions. Word has length 21 [2023-11-06 23:01:27,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:27,394 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1439 transitions. [2023-11-06 23:01:27,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-06 23:01:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1439 transitions. [2023-11-06 23:01:27,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 23:01:27,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:27,403 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:27,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:01:27,404 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:27,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:27,405 INFO L85 PathProgramCache]: Analyzing trace with hash 638611910, now seen corresponding path program 1 times [2023-11-06 23:01:27,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:27,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350372039] [2023-11-06 23:01:27,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:27,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:28,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 23:01:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:28,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:28,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:28,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:28,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:28,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350372039] [2023-11-06 23:01:28,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350372039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:28,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:28,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:01:28,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52093432] [2023-11-06 23:01:28,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:28,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:28,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:28,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:28,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:28,725 INFO L87 Difference]: Start difference. First operand 993 states and 1439 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:31,367 INFO L93 Difference]: Finished difference Result 2944 states and 4259 transitions. [2023-11-06 23:01:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:01:31,369 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-06 23:01:31,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:31,394 INFO L225 Difference]: With dead ends: 2944 [2023-11-06 23:01:31,395 INFO L226 Difference]: Without dead ends: 1954 [2023-11-06 23:01:31,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:01:31,404 INFO L413 NwaCegarLoop]: 653 mSDtfsCounter, 802 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 1134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:31,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1529 Invalid, 1134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-06 23:01:31,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2023-11-06 23:01:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1757. [2023-11-06 23:01:31,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1339 states have (on average 1.3846153846153846) internal successors, (1854), 1355 states have internal predecessors, (1854), 328 states have call successors, (328), 90 states have call predecessors, (328), 89 states have return successors, (323), 323 states have call predecessors, (323), 323 states have call successors, (323) [2023-11-06 23:01:31,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2505 transitions. [2023-11-06 23:01:31,611 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2505 transitions. Word has length 29 [2023-11-06 23:01:31,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:31,611 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2505 transitions. [2023-11-06 23:01:31,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:31,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2505 transitions. [2023-11-06 23:01:31,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 23:01:31,613 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:31,614 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:31,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:01:31,614 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:31,615 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:31,615 INFO L85 PathProgramCache]: Analyzing trace with hash -2017300398, now seen corresponding path program 1 times [2023-11-06 23:01:31,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:31,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657520804] [2023-11-06 23:01:31,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:31,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:33,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:01:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:33,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:33,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:33,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:33,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657520804] [2023-11-06 23:01:33,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657520804] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:33,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:33,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:01:33,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691255110] [2023-11-06 23:01:33,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:33,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:01:33,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:33,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:01:33,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:01:33,977 INFO L87 Difference]: Start difference. First operand 1757 states and 2505 transitions. Second operand has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:37,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:37,275 INFO L93 Difference]: Finished difference Result 4450 states and 6532 transitions. [2023-11-06 23:01:37,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:01:37,276 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-06 23:01:37,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:37,302 INFO L225 Difference]: With dead ends: 4450 [2023-11-06 23:01:37,302 INFO L226 Difference]: Without dead ends: 2696 [2023-11-06 23:01:37,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:01:37,315 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 663 mSDsluCounter, 3953 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 4917 SdHoareTripleChecker+Invalid, 1819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:37,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 4917 Invalid, 1819 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [90 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2023-11-06 23:01:37,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2696 states. [2023-11-06 23:01:37,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2696 to 1779. [2023-11-06 23:01:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1357 states have (on average 1.3839351510685336) internal successors, (1878), 1373 states have internal predecessors, (1878), 332 states have call successors, (332), 90 states have call predecessors, (332), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-06 23:01:37,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2537 transitions. [2023-11-06 23:01:37,549 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2537 transitions. Word has length 33 [2023-11-06 23:01:37,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:37,550 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2537 transitions. [2023-11-06 23:01:37,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.0) internal successors, (28), 6 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:37,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2537 transitions. [2023-11-06 23:01:37,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 23:01:37,553 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:37,553 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:37,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:01:37,554 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:37,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:37,555 INFO L85 PathProgramCache]: Analyzing trace with hash 472228564, now seen corresponding path program 1 times [2023-11-06 23:01:37,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:37,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558929507] [2023-11-06 23:01:37,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:37,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:38,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:01:38,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:38,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:38,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:38,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558929507] [2023-11-06 23:01:38,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558929507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:38,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:38,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:01:38,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522046171] [2023-11-06 23:01:38,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:38,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:38,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:38,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:38,701 INFO L87 Difference]: Start difference. First operand 1779 states and 2537 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:01:40,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:40,240 INFO L93 Difference]: Finished difference Result 1975 states and 2857 transitions. [2023-11-06 23:01:40,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:01:40,241 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2023-11-06 23:01:40,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:40,263 INFO L225 Difference]: With dead ends: 1975 [2023-11-06 23:01:40,264 INFO L226 Difference]: Without dead ends: 1966 [2023-11-06 23:01:40,266 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:01:40,277 INFO L413 NwaCegarLoop]: 576 mSDtfsCounter, 898 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 948 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:40,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [948 Valid, 992 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 23:01:40,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2023-11-06 23:01:40,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1779. [2023-11-06 23:01:40,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1779 states, 1357 states have (on average 1.3831982313927782) internal successors, (1877), 1373 states have internal predecessors, (1877), 332 states have call successors, (332), 90 states have call predecessors, (332), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-06 23:01:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2536 transitions. [2023-11-06 23:01:40,501 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2536 transitions. Word has length 33 [2023-11-06 23:01:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:40,502 INFO L495 AbstractCegarLoop]: Abstraction has 1779 states and 2536 transitions. [2023-11-06 23:01:40,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-06 23:01:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2536 transitions. [2023-11-06 23:01:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-06 23:01:40,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:40,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:40,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:01:40,507 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:40,508 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash 529486866, now seen corresponding path program 1 times [2023-11-06 23:01:40,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:40,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467765539] [2023-11-06 23:01:40,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:40,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:41,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:01:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:41,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:41,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:41,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:41,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467765539] [2023-11-06 23:01:41,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467765539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:41,530 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:41,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:01:41,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777256968] [2023-11-06 23:01:41,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:41,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:41,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:41,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:41,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:41,532 INFO L87 Difference]: Start difference. First operand 1779 states and 2536 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:42,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:42,906 INFO L93 Difference]: Finished difference Result 1959 states and 2837 transitions. [2023-11-06 23:01:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:01:42,907 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-06 23:01:42,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:42,923 INFO L225 Difference]: With dead ends: 1959 [2023-11-06 23:01:42,924 INFO L226 Difference]: Without dead ends: 1956 [2023-11-06 23:01:42,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:01:42,927 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 880 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:42,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [929 Valid, 965 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-06 23:01:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1956 states. [2023-11-06 23:01:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1956 to 1778. [2023-11-06 23:01:43,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1778 states, 1357 states have (on average 1.3824613117170228) internal successors, (1876), 1372 states have internal predecessors, (1876), 331 states have call successors, (331), 90 states have call predecessors, (331), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-06 23:01:43,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1778 states to 1778 states and 2534 transitions. [2023-11-06 23:01:43,088 INFO L78 Accepts]: Start accepts. Automaton has 1778 states and 2534 transitions. Word has length 33 [2023-11-06 23:01:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:43,088 INFO L495 AbstractCegarLoop]: Abstraction has 1778 states and 2534 transitions. [2023-11-06 23:01:43,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states and 2534 transitions. [2023-11-06 23:01:43,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-06 23:01:43,090 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:43,090 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:43,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:01:43,091 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:43,091 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:43,091 INFO L85 PathProgramCache]: Analyzing trace with hash -765997591, now seen corresponding path program 1 times [2023-11-06 23:01:43,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:43,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384817465] [2023-11-06 23:01:43,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:43,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:44,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:01:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:44,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:44,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:44,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:44,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:44,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384817465] [2023-11-06 23:01:44,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384817465] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:44,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:44,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:01:44,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803040304] [2023-11-06 23:01:44,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:44,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:44,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:44,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:44,130 INFO L87 Difference]: Start difference. First operand 1778 states and 2534 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:45,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:45,700 INFO L93 Difference]: Finished difference Result 1958 states and 2835 transitions. [2023-11-06 23:01:45,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:01:45,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-06 23:01:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:45,717 INFO L225 Difference]: With dead ends: 1958 [2023-11-06 23:01:45,717 INFO L226 Difference]: Without dead ends: 1955 [2023-11-06 23:01:45,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:01:45,720 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 877 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:45,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 962 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [247 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-06 23:01:45,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1955 states. [2023-11-06 23:01:45,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1955 to 1777. [2023-11-06 23:01:45,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1357 states have (on average 1.3817243920412674) internal successors, (1875), 1371 states have internal predecessors, (1875), 330 states have call successors, (330), 90 states have call predecessors, (330), 89 states have return successors, (327), 327 states have call predecessors, (327), 327 states have call successors, (327) [2023-11-06 23:01:45,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2532 transitions. [2023-11-06 23:01:45,885 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2532 transitions. Word has length 34 [2023-11-06 23:01:45,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:45,886 INFO L495 AbstractCegarLoop]: Abstraction has 1777 states and 2532 transitions. [2023-11-06 23:01:45,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:45,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2532 transitions. [2023-11-06 23:01:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-06 23:01:45,887 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:45,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:45,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 23:01:45,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:45,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:45,889 INFO L85 PathProgramCache]: Analyzing trace with hash 2023662069, now seen corresponding path program 1 times [2023-11-06 23:01:45,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:45,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469386941] [2023-11-06 23:01:45,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:45,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:46,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:01:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:46,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:01:46,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:46,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469386941] [2023-11-06 23:01:46,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469386941] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:46,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:46,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:01:46,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801820447] [2023-11-06 23:01:46,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:46,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:46,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:46,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:46,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:46,794 INFO L87 Difference]: Start difference. First operand 1777 states and 2532 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:48,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:48,670 INFO L93 Difference]: Finished difference Result 5103 states and 7364 transitions. [2023-11-06 23:01:48,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:01:48,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 35 [2023-11-06 23:01:48,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:48,695 INFO L225 Difference]: With dead ends: 5103 [2023-11-06 23:01:48,695 INFO L226 Difference]: Without dead ends: 3317 [2023-11-06 23:01:48,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:01:48,705 INFO L413 NwaCegarLoop]: 564 mSDtfsCounter, 1014 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 625 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 625 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:48,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1401 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [283 Valid, 625 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2023-11-06 23:01:48,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2023-11-06 23:01:48,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 3090. [2023-11-06 23:01:48,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3090 states, 2361 states have (on average 1.3795002117746717) internal successors, (3257), 2398 states have internal predecessors, (3257), 583 states have call successors, (583), 159 states have call predecessors, (583), 145 states have return successors, (573), 556 states have call predecessors, (573), 573 states have call successors, (573) [2023-11-06 23:01:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3090 states to 3090 states and 4413 transitions. [2023-11-06 23:01:48,965 INFO L78 Accepts]: Start accepts. Automaton has 3090 states and 4413 transitions. Word has length 35 [2023-11-06 23:01:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:48,965 INFO L495 AbstractCegarLoop]: Abstraction has 3090 states and 4413 transitions. [2023-11-06 23:01:48,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 23:01:48,966 INFO L276 IsEmpty]: Start isEmpty. Operand 3090 states and 4413 transitions. [2023-11-06 23:01:48,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-06 23:01:48,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:48,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:48,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:01:48,969 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:48,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:48,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1069925429, now seen corresponding path program 1 times [2023-11-06 23:01:48,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:48,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692573247] [2023-11-06 23:01:48,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:48,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:49,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:50,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:01:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:50,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:50,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-06 23:01:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:50,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:01:50,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:50,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692573247] [2023-11-06 23:01:50,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692573247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:50,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:50,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:01:50,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888956330] [2023-11-06 23:01:50,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:50,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:50,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:50,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:50,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:50,193 INFO L87 Difference]: Start difference. First operand 3090 states and 4413 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 23:01:52,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:52,540 INFO L93 Difference]: Finished difference Result 8022 states and 11595 transitions. [2023-11-06 23:01:52,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:01:52,540 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 59 [2023-11-06 23:01:52,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:52,576 INFO L225 Difference]: With dead ends: 8022 [2023-11-06 23:01:52,577 INFO L226 Difference]: Without dead ends: 4935 [2023-11-06 23:01:52,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:01:52,592 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 956 mSDsluCounter, 989 mSDsCounter, 0 mSdLazyCounter, 832 mSolverCounterSat, 257 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 257 IncrementalHoareTripleChecker+Valid, 832 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:52,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 1777 Invalid, 1089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [257 Valid, 832 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 23:01:52,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2023-11-06 23:01:52,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4606. [2023-11-06 23:01:52,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4606 states, 3539 states have (on average 1.3707261938400679) internal successors, (4851), 3588 states have internal predecessors, (4851), 851 states have call successors, (851), 233 states have call predecessors, (851), 215 states have return successors, (841), 820 states have call predecessors, (841), 841 states have call successors, (841) [2023-11-06 23:01:52,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4606 states to 4606 states and 6543 transitions. [2023-11-06 23:01:52,995 INFO L78 Accepts]: Start accepts. Automaton has 4606 states and 6543 transitions. Word has length 59 [2023-11-06 23:01:52,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:52,996 INFO L495 AbstractCegarLoop]: Abstraction has 4606 states and 6543 transitions. [2023-11-06 23:01:52,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 23:01:52,996 INFO L276 IsEmpty]: Start isEmpty. Operand 4606 states and 6543 transitions. [2023-11-06 23:01:53,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-06 23:01:53,000 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:53,001 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:53,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:01:53,001 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:53,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:53,002 INFO L85 PathProgramCache]: Analyzing trace with hash -119438403, now seen corresponding path program 1 times [2023-11-06 23:01:53,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:53,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825475545] [2023-11-06 23:01:53,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:53,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:53,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:54,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:01:54,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:54,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:54,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:54,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-06 23:01:54,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:54,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:01:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825475545] [2023-11-06 23:01:54,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825475545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:54,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:54,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:01:54,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423142404] [2023-11-06 23:01:54,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:54,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:01:54,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:54,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:01:54,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-06 23:01:54,400 INFO L87 Difference]: Start difference. First operand 4606 states and 6543 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 23:01:56,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:01:56,944 INFO L93 Difference]: Finished difference Result 11148 states and 16015 transitions. [2023-11-06 23:01:56,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:01:56,945 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 80 [2023-11-06 23:01:56,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:01:57,001 INFO L225 Difference]: With dead ends: 11148 [2023-11-06 23:01:57,001 INFO L226 Difference]: Without dead ends: 6545 [2023-11-06 23:01:57,021 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:01:57,024 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 890 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 1242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:01:57,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 2062 Invalid, 1242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2023-11-06 23:01:57,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6545 states. [2023-11-06 23:01:57,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6545 to 6122. [2023-11-06 23:01:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6122 states, 4717 states have (on average 1.3663345346618614) internal successors, (6445), 4778 states have internal predecessors, (6445), 1119 states have call successors, (1119), 307 states have call predecessors, (1119), 285 states have return successors, (1109), 1084 states have call predecessors, (1109), 1109 states have call successors, (1109) [2023-11-06 23:01:57,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6122 states to 6122 states and 8673 transitions. [2023-11-06 23:01:57,519 INFO L78 Accepts]: Start accepts. Automaton has 6122 states and 8673 transitions. Word has length 80 [2023-11-06 23:01:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:01:57,520 INFO L495 AbstractCegarLoop]: Abstraction has 6122 states and 8673 transitions. [2023-11-06 23:01:57,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-06 23:01:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 6122 states and 8673 transitions. [2023-11-06 23:01:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 23:01:57,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:01:57,528 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:01:57,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-06 23:01:57,532 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:01:57,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:01:57,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1692894582, now seen corresponding path program 1 times [2023-11-06 23:01:57,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:01:57,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361150320] [2023-11-06 23:01:57,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:01:57,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:01:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:01:58,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 23:01:58,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-06 23:01:58,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-06 23:01:58,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-06 23:01:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2023-11-06 23:01:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:01:58,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-06 23:01:58,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-06 23:01:58,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:01:58,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-06 23:01:58,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:01:58,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361150320] [2023-11-06 23:01:58,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361150320] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:01:58,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:01:58,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:01:58,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969225210] [2023-11-06 23:01:58,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:01:58,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:01:58,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:01:58,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:01:58,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:01:58,490 INFO L87 Difference]: Start difference. First operand 6122 states and 8673 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:02:02,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-06 23:02:03,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:03,477 INFO L93 Difference]: Finished difference Result 14934 states and 21459 transitions. [2023-11-06 23:02:03,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-06 23:02:03,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2023-11-06 23:02:03,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:03,528 INFO L225 Difference]: With dead ends: 14934 [2023-11-06 23:02:03,528 INFO L226 Difference]: Without dead ends: 8815 [2023-11-06 23:02:03,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:02:03,556 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 1137 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 967 mSolverCounterSat, 647 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 2188 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 967 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:03,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 2188 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 967 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2023-11-06 23:02:03,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8815 states. [2023-11-06 23:02:04,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8815 to 7896. [2023-11-06 23:02:04,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 6265 states have (on average 1.3894652833200318) internal successors, (8705), 6344 states have internal predecessors, (8705), 1269 states have call successors, (1269), 389 states have call predecessors, (1269), 361 states have return successors, (1253), 1210 states have call predecessors, (1253), 1253 states have call successors, (1253) [2023-11-06 23:02:04,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 11227 transitions. [2023-11-06 23:02:04,308 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 11227 transitions. Word has length 93 [2023-11-06 23:02:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:04,308 INFO L495 AbstractCegarLoop]: Abstraction has 7896 states and 11227 transitions. [2023-11-06 23:02:04,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:02:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 11227 transitions. [2023-11-06 23:02:04,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 23:02:04,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:04,323 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:04,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-06 23:02:04,324 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:04,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:04,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1741787852, now seen corresponding path program 1 times [2023-11-06 23:02:04,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:04,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911110470] [2023-11-06 23:02:04,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:04,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 23:02:05,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:02:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 23:02:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:05,739 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-06 23:02:05,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:05,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911110470] [2023-11-06 23:02:05,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911110470] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:05,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:05,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:02:05,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923580595] [2023-11-06 23:02:05,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:05,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:02:05,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:05,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:02:05,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:02:05,742 INFO L87 Difference]: Start difference. First operand 7896 states and 11227 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:02:08,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:08,450 INFO L93 Difference]: Finished difference Result 16295 states and 23305 transitions. [2023-11-06 23:02:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:02:08,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 109 [2023-11-06 23:02:08,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:08,488 INFO L225 Difference]: With dead ends: 16295 [2023-11-06 23:02:08,489 INFO L226 Difference]: Without dead ends: 8402 [2023-11-06 23:02:08,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:02:08,517 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1075 mSDsluCounter, 1857 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 406 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 406 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:08,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 2400 Invalid, 1512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [406 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-06 23:02:08,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8402 states. [2023-11-06 23:02:09,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8402 to 7896. [2023-11-06 23:02:09,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 6265 states have (on average 1.3888268156424581) internal successors, (8701), 6344 states have internal predecessors, (8701), 1269 states have call successors, (1269), 389 states have call predecessors, (1269), 361 states have return successors, (1253), 1210 states have call predecessors, (1253), 1253 states have call successors, (1253) [2023-11-06 23:02:09,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 11223 transitions. [2023-11-06 23:02:09,223 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 11223 transitions. Word has length 109 [2023-11-06 23:02:09,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:09,225 INFO L495 AbstractCegarLoop]: Abstraction has 7896 states and 11223 transitions. [2023-11-06 23:02:09,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-06 23:02:09,225 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 11223 transitions. [2023-11-06 23:02:09,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-06 23:02:09,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:09,235 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:09,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-06 23:02:09,236 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:09,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash 2130477618, now seen corresponding path program 1 times [2023-11-06 23:02:09,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:09,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904660594] [2023-11-06 23:02:09,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:09,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:09,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:10,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 23:02:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:02:10,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-06 23:02:10,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-06 23:02:10,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:10,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904660594] [2023-11-06 23:02:10,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904660594] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:10,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402068633] [2023-11-06 23:02:10,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:10,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:10,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:10,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:10,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:02:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:13,184 INFO L262 TraceCheckSpWp]: Trace formula consists of 13337 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-06 23:02:13,201 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:13,401 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 23:02:13,412 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:02:13,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402068633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:13,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:13,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2023-11-06 23:02:13,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114096514] [2023-11-06 23:02:13,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:13,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:02:13,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:13,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:02:13,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:02:13,415 INFO L87 Difference]: Start difference. First operand 7896 states and 11223 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:02:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:15,001 INFO L93 Difference]: Finished difference Result 16180 states and 22969 transitions. [2023-11-06 23:02:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:02:15,002 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 109 [2023-11-06 23:02:15,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:15,034 INFO L225 Difference]: With dead ends: 16180 [2023-11-06 23:02:15,034 INFO L226 Difference]: Without dead ends: 8247 [2023-11-06 23:02:15,053 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:02:15,054 INFO L413 NwaCegarLoop]: 780 mSDtfsCounter, 86 mSDsluCounter, 4641 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 5421 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:15,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 5421 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-06 23:02:15,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8247 states. [2023-11-06 23:02:15,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8247 to 7901. [2023-11-06 23:02:15,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7901 states, 6270 states have (on average 1.384688995215311) internal successors, (8682), 6349 states have internal predecessors, (8682), 1269 states have call successors, (1269), 389 states have call predecessors, (1269), 361 states have return successors, (1253), 1210 states have call predecessors, (1253), 1253 states have call successors, (1253) [2023-11-06 23:02:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7901 states to 7901 states and 11204 transitions. [2023-11-06 23:02:15,709 INFO L78 Accepts]: Start accepts. Automaton has 7901 states and 11204 transitions. Word has length 109 [2023-11-06 23:02:15,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:15,710 INFO L495 AbstractCegarLoop]: Abstraction has 7901 states and 11204 transitions. [2023-11-06 23:02:15,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 8 states have internal predecessors, (81), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-06 23:02:15,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7901 states and 11204 transitions. [2023-11-06 23:02:15,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-06 23:02:15,719 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:15,719 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:15,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:15,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-06 23:02:15,932 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:15,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:15,932 INFO L85 PathProgramCache]: Analyzing trace with hash 353143607, now seen corresponding path program 1 times [2023-11-06 23:02:15,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:15,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507264088] [2023-11-06 23:02:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:15,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:16,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:17,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 23:02:17,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2023-11-06 23:02:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:17,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:02:17,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2023-11-06 23:02:17,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-11-06 23:02:17,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:17,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507264088] [2023-11-06 23:02:17,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507264088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:17,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:17,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:02:17,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760839736] [2023-11-06 23:02:17,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:17,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:02:17,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:17,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:02:17,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:02:17,700 INFO L87 Difference]: Start difference. First operand 7901 states and 11204 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:02:20,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:20,767 INFO L93 Difference]: Finished difference Result 19503 states and 28342 transitions. [2023-11-06 23:02:20,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:02:20,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 133 [2023-11-06 23:02:20,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:20,824 INFO L225 Difference]: With dead ends: 19503 [2023-11-06 23:02:20,825 INFO L226 Difference]: Without dead ends: 11605 [2023-11-06 23:02:20,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:02:20,849 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 596 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2997 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:20,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 2997 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 23:02:20,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11605 states. [2023-11-06 23:02:21,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11605 to 7877. [2023-11-06 23:02:21,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7877 states, 6246 states have (on average 1.3810438680755683) internal successors, (8626), 6325 states have internal predecessors, (8626), 1269 states have call successors, (1269), 389 states have call predecessors, (1269), 361 states have return successors, (1253), 1210 states have call predecessors, (1253), 1253 states have call successors, (1253) [2023-11-06 23:02:21,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7877 states to 7877 states and 11148 transitions. [2023-11-06 23:02:21,662 INFO L78 Accepts]: Start accepts. Automaton has 7877 states and 11148 transitions. Word has length 133 [2023-11-06 23:02:21,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:21,662 INFO L495 AbstractCegarLoop]: Abstraction has 7877 states and 11148 transitions. [2023-11-06 23:02:21,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (10), 5 states have call predecessors, (10), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:02:21,663 INFO L276 IsEmpty]: Start isEmpty. Operand 7877 states and 11148 transitions. [2023-11-06 23:02:21,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-06 23:02:21,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:21,672 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:21,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-06 23:02:21,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:21,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:21,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1924432294, now seen corresponding path program 1 times [2023-11-06 23:02:21,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:21,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532302835] [2023-11-06 23:02:21,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:21,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-06 23:02:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-06 23:02:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:22,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-06 23:02:22,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:22,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:22,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:02:22,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-11-06 23:02:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:02:22,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:22,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532302835] [2023-11-06 23:02:22,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532302835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:22,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:22,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-06 23:02:22,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833259335] [2023-11-06 23:02:22,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:22,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:02:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:22,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:02:22,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:02:22,872 INFO L87 Difference]: Start difference. First operand 7877 states and 11148 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:02:26,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:26,018 INFO L93 Difference]: Finished difference Result 20180 states and 29299 transitions. [2023-11-06 23:02:26,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-06 23:02:26,019 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 137 [2023-11-06 23:02:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:26,083 INFO L225 Difference]: With dead ends: 20180 [2023-11-06 23:02:26,083 INFO L226 Difference]: Without dead ends: 12306 [2023-11-06 23:02:26,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:02:26,109 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 634 mSDsluCounter, 3616 mSDsCounter, 0 mSdLazyCounter, 1346 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 728 SdHoareTripleChecker+Valid, 4566 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:26,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [728 Valid, 4566 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1346 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-06 23:02:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12306 states. [2023-11-06 23:02:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12306 to 7909. [2023-11-06 23:02:26,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7909 states, 6278 states have (on average 1.3791016247212489) internal successors, (8658), 6357 states have internal predecessors, (8658), 1269 states have call successors, (1269), 389 states have call predecessors, (1269), 361 states have return successors, (1253), 1210 states have call predecessors, (1253), 1253 states have call successors, (1253) [2023-11-06 23:02:26,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7909 states to 7909 states and 11180 transitions. [2023-11-06 23:02:26,840 INFO L78 Accepts]: Start accepts. Automaton has 7909 states and 11180 transitions. Word has length 137 [2023-11-06 23:02:26,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:26,840 INFO L495 AbstractCegarLoop]: Abstraction has 7909 states and 11180 transitions. [2023-11-06 23:02:26,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-06 23:02:26,841 INFO L276 IsEmpty]: Start isEmpty. Operand 7909 states and 11180 transitions. [2023-11-06 23:02:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-06 23:02:26,850 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:26,850 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:26,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-06 23:02:26,851 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:26,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:26,851 INFO L85 PathProgramCache]: Analyzing trace with hash 158670765, now seen corresponding path program 1 times [2023-11-06 23:02:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:26,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394466422] [2023-11-06 23:02:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:26,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:27,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:28,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 23:02:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 23:02:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:28,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:28,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:02:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2023-11-06 23:02:28,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:28,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-06 23:02:28,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:28,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394466422] [2023-11-06 23:02:28,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394466422] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:28,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:28,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:02:28,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16653411] [2023-11-06 23:02:28,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:28,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:28,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:28,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:28,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:28,102 INFO L87 Difference]: Start difference. First operand 7909 states and 11180 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:02:31,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:31,412 INFO L93 Difference]: Finished difference Result 18369 states and 26270 transitions. [2023-11-06 23:02:31,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:02:31,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 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 149 [2023-11-06 23:02:31,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:31,460 INFO L225 Difference]: With dead ends: 18369 [2023-11-06 23:02:31,460 INFO L226 Difference]: Without dead ends: 10463 [2023-11-06 23:02:31,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:02:31,483 INFO L413 NwaCegarLoop]: 948 mSDtfsCounter, 1002 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 2854 SdHoareTripleChecker+Invalid, 1630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:31,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 2854 Invalid, 1630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 23:02:31,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10463 states. [2023-11-06 23:02:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10463 to 9831. [2023-11-06 23:02:32,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9831 states, 7826 states have (on average 1.375926399182213) internal successors, (10768), 7919 states have internal predecessors, (10768), 1561 states have call successors, (1561), 475 states have call predecessors, (1561), 443 states have return successors, (1545), 1496 states have call predecessors, (1545), 1545 states have call successors, (1545) [2023-11-06 23:02:32,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9831 states to 9831 states and 13874 transitions. [2023-11-06 23:02:32,506 INFO L78 Accepts]: Start accepts. Automaton has 9831 states and 13874 transitions. Word has length 149 [2023-11-06 23:02:32,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:32,506 INFO L495 AbstractCegarLoop]: Abstraction has 9831 states and 13874 transitions. [2023-11-06 23:02:32,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:02:32,506 INFO L276 IsEmpty]: Start isEmpty. Operand 9831 states and 13874 transitions. [2023-11-06 23:02:32,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 23:02:32,514 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:32,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:32,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:02:32,515 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:32,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:32,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1113386914, now seen corresponding path program 1 times [2023-11-06 23:02:32,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:32,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290434722] [2023-11-06 23:02:32,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:32,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 23:02:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 23:02:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:33,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:33,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:33,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:02:33,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-06 23:02:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-06 23:02:33,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:33,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290434722] [2023-11-06 23:02:33,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290434722] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:33,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:33,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:02:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874248672] [2023-11-06 23:02:33,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:33,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:33,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:33,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:33,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:33,753 INFO L87 Difference]: Start difference. First operand 9831 states and 13874 transitions. Second operand has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:02:37,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:37,239 INFO L93 Difference]: Finished difference Result 22317 states and 31834 transitions. [2023-11-06 23:02:37,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:02:37,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (12), 5 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 146 [2023-11-06 23:02:37,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:37,276 INFO L225 Difference]: With dead ends: 22317 [2023-11-06 23:02:37,277 INFO L226 Difference]: Without dead ends: 12489 [2023-11-06 23:02:37,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:02:37,297 INFO L413 NwaCegarLoop]: 950 mSDtfsCounter, 1200 mSDsluCounter, 1852 mSDsCounter, 0 mSdLazyCounter, 1269 mSolverCounterSat, 465 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 1734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 465 IncrementalHoareTripleChecker+Valid, 1269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:37,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 2802 Invalid, 1734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [465 Valid, 1269 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2023-11-06 23:02:37,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12489 states. [2023-11-06 23:02:38,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12489 to 11753. [2023-11-06 23:02:38,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11753 states, 9374 states have (on average 1.3737998719863451) internal successors, (12878), 9481 states have internal predecessors, (12878), 1853 states have call successors, (1853), 561 states have call predecessors, (1853), 525 states have return successors, (1837), 1782 states have call predecessors, (1837), 1837 states have call successors, (1837) [2023-11-06 23:02:38,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11753 states to 11753 states and 16568 transitions. [2023-11-06 23:02:38,311 INFO L78 Accepts]: Start accepts. Automaton has 11753 states and 16568 transitions. Word has length 146 [2023-11-06 23:02:38,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:38,312 INFO L495 AbstractCegarLoop]: Abstraction has 11753 states and 16568 transitions. [2023-11-06 23:02:38,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:02:38,312 INFO L276 IsEmpty]: Start isEmpty. Operand 11753 states and 16568 transitions. [2023-11-06 23:02:38,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-06 23:02:38,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:38,321 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:38,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 23:02:38,321 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:38,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:38,322 INFO L85 PathProgramCache]: Analyzing trace with hash 580722598, now seen corresponding path program 1 times [2023-11-06 23:02:38,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:38,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473070069] [2023-11-06 23:02:38,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:38,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:38,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:39,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:39,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 23:02:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:39,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 23:02:39,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:39,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:39,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:39,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:02:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2023-11-06 23:02:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 23:02:39,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:39,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473070069] [2023-11-06 23:02:39,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473070069] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:02:39,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490702157] [2023-11-06 23:02:39,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:39,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:02:39,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:02:39,654 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:02:39,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:02:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:42,031 INFO L262 TraceCheckSpWp]: Trace formula consists of 13465 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-06 23:02:42,042 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:02:42,264 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-06 23:02:42,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:02:42,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490702157] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:42,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:02:42,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 8 [2023-11-06 23:02:42,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962025861] [2023-11-06 23:02:42,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:42,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-06 23:02:42,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:42,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-06 23:02:42,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:02:42,266 INFO L87 Difference]: Start difference. First operand 11753 states and 16568 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-06 23:02:45,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:45,226 INFO L93 Difference]: Finished difference Result 35252 states and 49696 transitions. [2023-11-06 23:02:45,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-06 23:02:45,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 139 [2023-11-06 23:02:45,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:45,328 INFO L225 Difference]: With dead ends: 35252 [2023-11-06 23:02:45,329 INFO L226 Difference]: Without dead ends: 35237 [2023-11-06 23:02:45,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:02:45,344 INFO L413 NwaCegarLoop]: 1409 mSDtfsCounter, 1523 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1523 SdHoareTripleChecker+Valid, 2757 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:45,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1523 Valid, 2757 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:02:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35237 states. [2023-11-06 23:02:48,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35237 to 35101. [2023-11-06 23:02:48,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35101 states, 27996 states have (on average 1.374982140305758) internal successors, (38494), 28309 states have internal predecessors, (38494), 5537 states have call successors, (5537), 1669 states have call predecessors, (5537), 1567 states have return successors, (5503), 5338 states have call predecessors, (5503), 5503 states have call successors, (5503) [2023-11-06 23:02:48,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35101 states to 35101 states and 49534 transitions. [2023-11-06 23:02:48,271 INFO L78 Accepts]: Start accepts. Automaton has 35101 states and 49534 transitions. Word has length 139 [2023-11-06 23:02:48,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:02:48,271 INFO L495 AbstractCegarLoop]: Abstraction has 35101 states and 49534 transitions. [2023-11-06 23:02:48,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-06 23:02:48,271 INFO L276 IsEmpty]: Start isEmpty. Operand 35101 states and 49534 transitions. [2023-11-06 23:02:48,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-11-06 23:02:48,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:02:48,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:02:48,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:02:48,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f3a45a66-8398-4b88-b8be-a8f2135abe8e/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-06 23:02:48,513 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:02:48,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:02:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1196331938, now seen corresponding path program 1 times [2023-11-06 23:02:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:02:48,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254306779] [2023-11-06 23:02:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:02:48,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:02:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:49,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 23:02:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2023-11-06 23:02:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:49,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:49,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:02:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:02:49,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2023-11-06 23:02:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:02:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:02:49,685 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2023-11-06 23:02:49,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:02:49,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254306779] [2023-11-06 23:02:49,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254306779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:02:49,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:02:49,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:02:49,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113063725] [2023-11-06 23:02:49,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:02:49,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:02:49,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:02:49,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:02:49,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-06 23:02:49,688 INFO L87 Difference]: Start difference. First operand 35101 states and 49534 transitions. Second operand has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:02:56,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:02:56,110 INFO L93 Difference]: Finished difference Result 78419 states and 111794 transitions. [2023-11-06 23:02:56,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:02:56,111 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 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 151 [2023-11-06 23:02:56,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:02:56,242 INFO L225 Difference]: With dead ends: 78419 [2023-11-06 23:02:56,242 INFO L226 Difference]: Without dead ends: 43321 [2023-11-06 23:02:56,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:02:56,313 INFO L413 NwaCegarLoop]: 964 mSDtfsCounter, 1184 mSDsluCounter, 1864 mSDsCounter, 0 mSdLazyCounter, 1277 mSolverCounterSat, 461 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 461 IncrementalHoareTripleChecker+Valid, 1277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:02:56,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 2828 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [461 Valid, 1277 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-11-06 23:02:56,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43321 states. [2023-11-06 23:02:59,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43321 to 40859. [2023-11-06 23:02:59,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40859 states, 32632 states have (on average 1.3733145378769307) internal successors, (44814), 32987 states have internal predecessors, (44814), 6413 states have call successors, (6413), 1927 states have call predecessors, (6413), 1813 states have return successors, (6379), 6196 states have call predecessors, (6379), 6379 states have call successors, (6379) [2023-11-06 23:03:00,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40859 states to 40859 states and 57606 transitions. [2023-11-06 23:03:00,079 INFO L78 Accepts]: Start accepts. Automaton has 40859 states and 57606 transitions. Word has length 151 [2023-11-06 23:03:00,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:00,080 INFO L495 AbstractCegarLoop]: Abstraction has 40859 states and 57606 transitions. [2023-11-06 23:03:00,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.666666666666668) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:03:00,080 INFO L276 IsEmpty]: Start isEmpty. Operand 40859 states and 57606 transitions. [2023-11-06 23:03:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2023-11-06 23:03:00,092 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:00,093 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:00,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 23:03:00,095 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:00,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:00,095 INFO L85 PathProgramCache]: Analyzing trace with hash -898134237, now seen corresponding path program 1 times [2023-11-06 23:03:00,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:00,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287258716] [2023-11-06 23:03:00,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:00,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:03:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 23:03:01,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:01,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2023-11-06 23:03:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:03:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:03:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2023-11-06 23:03:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:01,742 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-06 23:03:01,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:01,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287258716] [2023-11-06 23:03:01,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287258716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:01,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:01,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:03:01,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836328911] [2023-11-06 23:03:01,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:01,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:03:01,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:01,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:03:01,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:03:01,746 INFO L87 Difference]: Start difference. First operand 40859 states and 57606 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:03:07,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:03:07,360 INFO L93 Difference]: Finished difference Result 84155 states and 119341 transitions. [2023-11-06 23:03:07,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 23:03:07,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (12), 5 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 146 [2023-11-06 23:03:07,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:03:07,486 INFO L225 Difference]: With dead ends: 84155 [2023-11-06 23:03:07,486 INFO L226 Difference]: Without dead ends: 43299 [2023-11-06 23:03:07,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-11-06 23:03:07,547 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 888 mSDsluCounter, 2234 mSDsCounter, 0 mSdLazyCounter, 1182 mSolverCounterSat, 268 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 2776 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 268 IncrementalHoareTripleChecker+Valid, 1182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-06 23:03:07,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 2776 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [268 Valid, 1182 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-06 23:03:07,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43299 states. [2023-11-06 23:03:11,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43299 to 40859. [2023-11-06 23:03:11,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40859 states, 32632 states have (on average 1.3729468006864427) internal successors, (44802), 32987 states have internal predecessors, (44802), 6413 states have call successors, (6413), 1927 states have call predecessors, (6413), 1813 states have return successors, (6379), 6196 states have call predecessors, (6379), 6379 states have call successors, (6379) [2023-11-06 23:03:11,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40859 states to 40859 states and 57594 transitions. [2023-11-06 23:03:11,399 INFO L78 Accepts]: Start accepts. Automaton has 40859 states and 57594 transitions. Word has length 146 [2023-11-06 23:03:11,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:03:11,400 INFO L495 AbstractCegarLoop]: Abstraction has 40859 states and 57594 transitions. [2023-11-06 23:03:11,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-06 23:03:11,400 INFO L276 IsEmpty]: Start isEmpty. Operand 40859 states and 57594 transitions. [2023-11-06 23:03:11,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-06 23:03:11,411 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:03:11,412 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:03:11,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 23:03:11,412 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-06 23:03:11,413 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:03:11,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1233307589, now seen corresponding path program 1 times [2023-11-06 23:03:11,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:03:11,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984160812] [2023-11-06 23:03:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:03:11,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:03:11,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:03:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-06 23:03:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 23:03:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:12,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:12,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-06 23:03:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-06 23:03:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-11-06 23:03:12,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-06 23:03:12,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:03:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-06 23:03:12,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:03:12,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984160812] [2023-11-06 23:03:12,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984160812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:03:12,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:03:12,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-06 23:03:12,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938367752] [2023-11-06 23:03:12,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:03:12,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-06 23:03:12,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:03:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-06 23:03:12,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-06 23:03:12,762 INFO L87 Difference]: Start difference. First operand 40859 states and 57594 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9)