./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:31,075 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:31,209 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:58:31,217 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:31,218 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:31,266 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:31,267 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:31,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:31,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:31,276 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:31,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:31,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:31,279 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:31,281 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:31,282 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:58:31,282 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:31,283 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:31,283 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:31,284 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:31,285 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:58:31,285 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:31,286 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:58:31,286 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:31,287 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:31,287 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:31,288 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:31,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:31,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:31,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:31,291 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:31,293 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:31,293 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:58:31,293 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:31,294 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:31,294 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:31,294 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:58:31,294 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:31,295 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:31,295 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:31,295 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05edfd344a133924af20e7887ded3d695179bf474d7b39ea2b7287f4a108ff8d [2023-11-19 07:58:31,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:31,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:31,754 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:31,767 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:31,771 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:31,773 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-19 07:58:35,039 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:58:35,515 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:58:35,516 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i [2023-11-19 07:58:35,543 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/data/50f482dc5/83985a7bed0b43bcb07b233d2e992f14/FLAG113571413 [2023-11-19 07:58:35,560 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/data/50f482dc5/83985a7bed0b43bcb07b233d2e992f14 [2023-11-19 07:58:35,563 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:58:35,565 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:58:35,566 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:35,566 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:58:35,573 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:58:35,574 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:35" (1/1) ... [2023-11-19 07:58:35,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@228aa564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:35, skipping insertion in model container [2023-11-19 07:58:35,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:58:35" (1/1) ... [2023-11-19 07:58:35,672 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:58:36,307 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2023-11-19 07:58:36,325 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2023-11-19 07:58:36,522 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2023-11-19 07:58:36,531 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2023-11-19 07:58:36,559 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:36,571 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:58:36,605 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44118,44131] [2023-11-19 07:58:36,607 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[44660,44673] [2023-11-19 07:58:36,670 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56247,56260] [2023-11-19 07:58:36,674 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_beba4d08-3d71-4a0a-84a0-9be7b538928a/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test6-1.i[56368,56381] [2023-11-19 07:58:36,679 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:58:36,770 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:58:36,778 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:58:36,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36 WrapperNode [2023-11-19 07:58:36,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:58:36,781 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:36,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:58:36,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:58:36,790 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:36,853 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,007 INFO L138 Inliner]: procedures = 282, calls = 294, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 1373 [2023-11-19 07:58:37,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:58:37,008 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:58:37,008 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:58:37,009 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:58:37,031 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,031 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,048 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,049 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,146 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,165 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,171 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,179 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:58:37,193 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:58:37,193 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:58:37,193 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:58:37,194 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (1/1) ... [2023-11-19 07:58:37,201 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:37,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:37,230 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:58:37,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:58:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:58:37,295 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 07:58:37,296 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:58:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:58:37,297 INFO L130 BoogieDeclarations]: Found specification of procedure alt_bzero [2023-11-19 07:58:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_bzero [2023-11-19 07:58:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:58:37,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-19 07:58:37,298 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-19 07:58:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:58:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:58:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:58:37,299 INFO L130 BoogieDeclarations]: Found specification of procedure alt_malloc [2023-11-19 07:58:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_malloc [2023-11-19 07:58:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:58:37,300 INFO L130 BoogieDeclarations]: Found specification of procedure alt_free [2023-11-19 07:58:37,300 INFO L138 BoogieDeclarations]: Found implementation of procedure alt_free [2023-11-19 07:58:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:58:37,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:58:37,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:58:37,557 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:58:37,559 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:58:39,530 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:58:39,546 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:58:39,546 INFO L302 CfgBuilder]: Removed 63 assume(true) statements. [2023-11-19 07:58:39,554 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:39 BoogieIcfgContainer [2023-11-19 07:58:39,555 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:58:39,557 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:58:39,557 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:58:39,561 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:58:39,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:58:35" (1/3) ... [2023-11-19 07:58:39,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d08bc99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:39, skipping insertion in model container [2023-11-19 07:58:39,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:58:36" (2/3) ... [2023-11-19 07:58:39,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d08bc99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:58:39, skipping insertion in model container [2023-11-19 07:58:39,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:58:39" (3/3) ... [2023-11-19 07:58:39,565 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test6-1.i [2023-11-19 07:58:39,587 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:58:39,588 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 07:58:39,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:58:39,666 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4d097c5c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:58:39,666 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-19 07:58:39,673 INFO L276 IsEmpty]: Start isEmpty. Operand has 393 states, 371 states have (on average 1.6657681940700808) internal successors, (618), 375 states have internal predecessors, (618), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2023-11-19 07:58:39,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:58:39,682 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:39,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:39,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:58:39,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:39,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1053908008, now seen corresponding path program 1 times [2023-11-19 07:58:39,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:39,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300962407] [2023-11-19 07:58:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:39,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:39,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:39,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:39,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300962407] [2023-11-19 07:58:39,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300962407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:39,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:58:39,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970771258] [2023-11-19 07:58:39,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:39,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 07:58:39,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:39,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 07:58:39,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:39,948 INFO L87 Difference]: Start difference. First operand has 393 states, 371 states have (on average 1.6657681940700808) internal successors, (618), 375 states have internal predecessors, (618), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:40,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:40,021 INFO L93 Difference]: Finished difference Result 781 states and 1296 transitions. [2023-11-19 07:58:40,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 07:58:40,023 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:58:40,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:40,038 INFO L225 Difference]: With dead ends: 781 [2023-11-19 07:58:40,039 INFO L226 Difference]: Without dead ends: 386 [2023-11-19 07:58:40,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 07:58:40,049 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:40,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:58:40,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-11-19 07:58:40,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2023-11-19 07:58:40,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 365 states have (on average 1.484931506849315) internal successors, (542), 370 states have internal predecessors, (542), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:58:40,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 567 transitions. [2023-11-19 07:58:40,131 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 567 transitions. Word has length 8 [2023-11-19 07:58:40,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:40,132 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 567 transitions. [2023-11-19 07:58:40,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:40,133 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 567 transitions. [2023-11-19 07:58:40,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-11-19 07:58:40,134 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:40,134 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:40,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:58:40,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:58:40,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:40,136 INFO L85 PathProgramCache]: Analyzing trace with hash -719765386, now seen corresponding path program 1 times [2023-11-19 07:58:40,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:40,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727246281] [2023-11-19 07:58:40,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:40,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:40,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:40,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:40,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727246281] [2023-11-19 07:58:40,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727246281] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:40,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:40,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:40,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906207746] [2023-11-19 07:58:40,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:40,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:40,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:40,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:40,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:40,405 INFO L87 Difference]: Start difference. First operand 386 states and 567 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:40,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:40,899 INFO L93 Difference]: Finished difference Result 861 states and 1284 transitions. [2023-11-19 07:58:40,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:40,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2023-11-19 07:58:40,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:40,908 INFO L225 Difference]: With dead ends: 861 [2023-11-19 07:58:40,908 INFO L226 Difference]: Without dead ends: 669 [2023-11-19 07:58:40,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:40,911 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 420 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1571 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:40,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [424 Valid, 1571 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:58:40,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2023-11-19 07:58:40,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 388. [2023-11-19 07:58:40,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 367 states have (on average 1.4822888283378746) internal successors, (544), 372 states have internal predecessors, (544), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:58:40,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 569 transitions. [2023-11-19 07:58:40,950 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 569 transitions. Word has length 10 [2023-11-19 07:58:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:40,987 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 569 transitions. [2023-11-19 07:58:40,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:40,988 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 569 transitions. [2023-11-19 07:58:40,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:58:40,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:40,991 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:40,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:58:40,992 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:58:40,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:40,993 INFO L85 PathProgramCache]: Analyzing trace with hash 669380872, now seen corresponding path program 1 times [2023-11-19 07:58:40,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:40,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078779399] [2023-11-19 07:58:40,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:40,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:41,087 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:41,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [460380412] [2023-11-19 07:58:41,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:41,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:41,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:41,093 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:41,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:58:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:41,386 INFO L262 TraceCheckSpWp]: Trace formula consists of 341 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:41,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:41,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:41,441 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:41,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:41,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078779399] [2023-11-19 07:58:41,442 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:41,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460380412] [2023-11-19 07:58:41,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [460380412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:41,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:41,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:58:41,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866272022] [2023-11-19 07:58:41,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:41,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:58:41,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:41,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:58:41,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:41,453 INFO L87 Difference]: Start difference. First operand 388 states and 569 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:41,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:41,559 INFO L93 Difference]: Finished difference Result 793 states and 1165 transitions. [2023-11-19 07:58:41,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:58:41,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 07:58:41,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:41,565 INFO L225 Difference]: With dead ends: 793 [2023-11-19 07:58:41,566 INFO L226 Difference]: Without dead ends: 409 [2023-11-19 07:58:41,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:58:41,571 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 9 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:41,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 1079 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:41,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2023-11-19 07:58:41,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 408. [2023-11-19 07:58:41,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 387 states have (on average 1.4573643410852712) internal successors, (564), 392 states have internal predecessors, (564), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:58:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 589 transitions. [2023-11-19 07:58:41,610 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 589 transitions. Word has length 66 [2023-11-19 07:58:41,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:41,611 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 589 transitions. [2023-11-19 07:58:41,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:41,611 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 589 transitions. [2023-11-19 07:58:41,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:58:41,623 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:41,623 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:41,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:41,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:41,849 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:58:41,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:41,850 INFO L85 PathProgramCache]: Analyzing trace with hash 421234378, now seen corresponding path program 1 times [2023-11-19 07:58:41,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:41,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878778059] [2023-11-19 07:58:41,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:41,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:41,887 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:41,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1078242333] [2023-11-19 07:58:41,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:41,888 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:41,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:41,889 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:41,918 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:58:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:42,162 INFO L262 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:58:42,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:42,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:42,217 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:42,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:42,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878778059] [2023-11-19 07:58:42,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:42,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1078242333] [2023-11-19 07:58:42,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1078242333] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:42,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:42,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:58:42,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071259497] [2023-11-19 07:58:42,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:42,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:58:42,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:42,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:58:42,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:58:42,222 INFO L87 Difference]: Start difference. First operand 408 states and 589 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:42,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:42,328 INFO L93 Difference]: Finished difference Result 799 states and 1161 transitions. [2023-11-19 07:58:42,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:58:42,329 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 07:58:42,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:42,332 INFO L225 Difference]: With dead ends: 799 [2023-11-19 07:58:42,333 INFO L226 Difference]: Without dead ends: 395 [2023-11-19 07:58:42,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:42,335 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 165 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1466 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:42,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1466 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:42,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 395 states. [2023-11-19 07:58:42,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 395 to 394. [2023-11-19 07:58:42,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 373 states have (on average 1.4557640750670242) internal successors, (543), 378 states have internal predecessors, (543), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:58:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 568 transitions. [2023-11-19 07:58:42,351 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 568 transitions. Word has length 66 [2023-11-19 07:58:42,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:42,352 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 568 transitions. [2023-11-19 07:58:42,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:42,352 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 568 transitions. [2023-11-19 07:58:42,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:58:42,353 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:42,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:42,383 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:42,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:42,571 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:58:42,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:42,571 INFO L85 PathProgramCache]: Analyzing trace with hash 125739260, now seen corresponding path program 1 times [2023-11-19 07:58:42,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:42,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025558083] [2023-11-19 07:58:42,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:42,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:42,604 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:42,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1389783404] [2023-11-19 07:58:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:42,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:42,605 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:42,606 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:42,620 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:58:42,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:42,885 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-19 07:58:42,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:42,928 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:58:42,990 INFO L349 Elim1Store]: treesize reduction 57, result has 23.0 percent of original size [2023-11-19 07:58:42,990 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 28 [2023-11-19 07:58:43,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:58:43,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 45 treesize of output 23 [2023-11-19 07:58:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:43,678 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:43,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:43,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025558083] [2023-11-19 07:58:43,679 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:43,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389783404] [2023-11-19 07:58:43,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389783404] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:43,679 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:43,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-11-19 07:58:43,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216239099] [2023-11-19 07:58:43,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:43,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:58:43,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:43,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:58:43,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:58:43,682 INFO L87 Difference]: Start difference. First operand 394 states and 568 transitions. Second operand has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:46,342 INFO L93 Difference]: Finished difference Result 1115 states and 1619 transitions. [2023-11-19 07:58:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:58:46,343 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 07:58:46,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:46,350 INFO L225 Difference]: With dead ends: 1115 [2023-11-19 07:58:46,350 INFO L226 Difference]: Without dead ends: 725 [2023-11-19 07:58:46,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2023-11-19 07:58:46,352 INFO L413 NwaCegarLoop]: 541 mSDtfsCounter, 672 mSDsluCounter, 2920 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 676 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:46,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [676 Valid, 3461 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-11-19 07:58:46,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2023-11-19 07:58:46,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 432. [2023-11-19 07:58:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 432 states, 411 states have (on average 1.4257907542579076) internal successors, (586), 416 states have internal predecessors, (586), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:58:46,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432 states to 432 states and 611 transitions. [2023-11-19 07:58:46,373 INFO L78 Accepts]: Start accepts. Automaton has 432 states and 611 transitions. Word has length 66 [2023-11-19 07:58:46,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:46,373 INFO L495 AbstractCegarLoop]: Abstraction has 432 states and 611 transitions. [2023-11-19 07:58:46,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.818181818181818) internal successors, (64), 11 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand 432 states and 611 transitions. [2023-11-19 07:58:46,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-19 07:58:46,375 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:46,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:46,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:46,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:46,600 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:58:46,600 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:46,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1246068038, now seen corresponding path program 1 times [2023-11-19 07:58:46,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:46,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023245388] [2023-11-19 07:58:46,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:46,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:46,635 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:46,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [140999421] [2023-11-19 07:58:46,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:46,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:46,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:46,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:46,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:58:46,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:46,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:58:46,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:58:46,926 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:58:46,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:58:46,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023245388] [2023-11-19 07:58:46,927 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:58:46,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140999421] [2023-11-19 07:58:46,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140999421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:58:46,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:58:46,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:58:46,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476397727] [2023-11-19 07:58:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:58:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:58:46,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:58:46,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:58:46,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:46,933 INFO L87 Difference]: Start difference. First operand 432 states and 611 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:47,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:58:47,071 INFO L93 Difference]: Finished difference Result 936 states and 1348 transitions. [2023-11-19 07:58:47,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:58:47,072 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2023-11-19 07:58:47,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:58:47,076 INFO L225 Difference]: With dead ends: 936 [2023-11-19 07:58:47,076 INFO L226 Difference]: Without dead ends: 543 [2023-11-19 07:58:47,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:58:47,077 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 142 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:58:47,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 2147 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:58:47,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2023-11-19 07:58:47,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 455. [2023-11-19 07:58:47,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 434 states have (on average 1.400921658986175) internal successors, (608), 439 states have internal predecessors, (608), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:58:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 633 transitions. [2023-11-19 07:58:47,102 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 633 transitions. Word has length 66 [2023-11-19 07:58:47,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:58:47,103 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 633 transitions. [2023-11-19 07:58:47,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:58:47,103 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 633 transitions. [2023-11-19 07:58:47,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:58:47,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:58:47,104 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:58:47,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:58:47,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:58:47,325 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:58:47,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:58:47,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1137044126, now seen corresponding path program 1 times [2023-11-19 07:58:47,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:58:47,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531120235] [2023-11-19 07:58:47,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:47,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:58:47,376 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:58:47,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1300863152] [2023-11-19 07:58:47,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:58:47,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:58:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:58:47,379 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:58:47,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:58:47,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:58:47,666 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 07:58:47,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:58:47,928 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:58:47,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 44 treesize of output 22 [2023-11-19 07:59:03,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:03,301 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:03,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:03,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531120235] [2023-11-19 07:59:03,301 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:03,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300863152] [2023-11-19 07:59:03,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300863152] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:03,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:03,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:59:03,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425418790] [2023-11-19 07:59:03,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:03,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:59:03,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:03,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:59:03,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:59:03,304 INFO L87 Difference]: Start difference. First operand 455 states and 633 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:04,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:04,809 INFO L93 Difference]: Finished difference Result 895 states and 1258 transitions. [2023-11-19 07:59:04,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:59:04,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2023-11-19 07:59:04,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:04,815 INFO L225 Difference]: With dead ends: 895 [2023-11-19 07:59:04,815 INFO L226 Difference]: Without dead ends: 481 [2023-11-19 07:59:04,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2023-11-19 07:59:04,818 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 28 mSDsluCounter, 2618 mSDsCounter, 0 mSdLazyCounter, 948 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3170 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 948 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:04,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3170 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 948 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-19 07:59:04,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2023-11-19 07:59:04,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 467. [2023-11-19 07:59:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 446 states have (on average 1.3946188340807175) internal successors, (622), 451 states have internal predecessors, (622), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:59:04,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 647 transitions. [2023-11-19 07:59:04,849 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 647 transitions. Word has length 67 [2023-11-19 07:59:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:04,852 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 647 transitions. [2023-11-19 07:59:04,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:04,852 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 647 transitions. [2023-11-19 07:59:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 07:59:04,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:04,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:04,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:05,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-19 07:59:05,079 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:05,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:05,080 INFO L85 PathProgramCache]: Analyzing trace with hash 826976131, now seen corresponding path program 1 times [2023-11-19 07:59:05,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:05,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894569021] [2023-11-19 07:59:05,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:05,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:05,115 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:05,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109340961] [2023-11-19 07:59:05,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:05,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:05,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:05,143 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:05,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:59:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:05,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 07:59:05,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:05,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:05,722 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:05,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894569021] [2023-11-19 07:59:05,723 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:05,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109340961] [2023-11-19 07:59:05,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109340961] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:05,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:05,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:59:05,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116091693] [2023-11-19 07:59:05,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:05,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:05,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:05,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:05,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:05,727 INFO L87 Difference]: Start difference. First operand 467 states and 647 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:06,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:06,536 INFO L93 Difference]: Finished difference Result 908 states and 1272 transitions. [2023-11-19 07:59:06,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:06,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2023-11-19 07:59:06,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:06,541 INFO L225 Difference]: With dead ends: 908 [2023-11-19 07:59:06,541 INFO L226 Difference]: Without dead ends: 477 [2023-11-19 07:59:06,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:06,543 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 16 mSDsluCounter, 2168 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 2711 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:06,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 2711 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 07:59:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-19 07:59:06,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 473. [2023-11-19 07:59:06,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 452 states have (on average 1.3938053097345133) internal successors, (630), 457 states have internal predecessors, (630), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:59:06,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 655 transitions. [2023-11-19 07:59:06,566 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 655 transitions. Word has length 68 [2023-11-19 07:59:06,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:06,567 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 655 transitions. [2023-11-19 07:59:06,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 7 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:06,567 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 655 transitions. [2023-11-19 07:59:06,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:59:06,568 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:06,568 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:06,597 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:06,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:06,792 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:06,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:06,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1899207471, now seen corresponding path program 1 times [2023-11-19 07:59:06,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:06,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993460820] [2023-11-19 07:59:06,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:06,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:06,832 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:06,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1985683695] [2023-11-19 07:59:06,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:06,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:06,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:06,834 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:06,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:59:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:07,127 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:59:07,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:07,273 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:07,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993460820] [2023-11-19 07:59:07,273 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:07,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985683695] [2023-11-19 07:59:07,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985683695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:07,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:07,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:59:07,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087473328] [2023-11-19 07:59:07,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:07,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:07,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:07,277 INFO L87 Difference]: Start difference. First operand 473 states and 655 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:07,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:07,980 INFO L93 Difference]: Finished difference Result 923 states and 1293 transitions. [2023-11-19 07:59:07,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:59:07,981 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-19 07:59:07,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:07,984 INFO L225 Difference]: With dead ends: 923 [2023-11-19 07:59:07,985 INFO L226 Difference]: Without dead ends: 486 [2023-11-19 07:59:07,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:59:07,988 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 45 mSDsluCounter, 2251 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 2790 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:07,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 2790 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:59:07,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-19 07:59:08,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 480. [2023-11-19 07:59:08,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 459 states have (on average 1.3965141612200436) internal successors, (641), 464 states have internal predecessors, (641), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:59:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 666 transitions. [2023-11-19 07:59:08,013 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 666 transitions. Word has length 69 [2023-11-19 07:59:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:08,014 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 666 transitions. [2023-11-19 07:59:08,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 666 transitions. [2023-11-19 07:59:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 07:59:08,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:08,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:08,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:08,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:08,239 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:08,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1236024038, now seen corresponding path program 1 times [2023-11-19 07:59:08,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:08,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35779645] [2023-11-19 07:59:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:08,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:08,276 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:08,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1937873331] [2023-11-19 07:59:08,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:08,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:08,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:08,284 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:08,307 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:59:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:08,583 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:59:08,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:08,745 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:08,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35779645] [2023-11-19 07:59:08,746 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:08,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937873331] [2023-11-19 07:59:08,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937873331] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:08,746 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-19 07:59:08,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694203263] [2023-11-19 07:59:08,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:08,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:08,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:08,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:08,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:08,751 INFO L87 Difference]: Start difference. First operand 480 states and 666 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:09,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:09,359 INFO L93 Difference]: Finished difference Result 930 states and 1303 transitions. [2023-11-19 07:59:09,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:09,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2023-11-19 07:59:09,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:09,364 INFO L225 Difference]: With dead ends: 930 [2023-11-19 07:59:09,364 INFO L226 Difference]: Without dead ends: 486 [2023-11-19 07:59:09,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:09,366 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 15 mSDsluCounter, 2169 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2717 SdHoareTripleChecker+Invalid, 679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:09,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2717 Invalid, 679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:59:09,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2023-11-19 07:59:09,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 480. [2023-11-19 07:59:09,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 459 states have (on average 1.3965141612200436) internal successors, (641), 464 states have internal predecessors, (641), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-19 07:59:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 666 transitions. [2023-11-19 07:59:09,391 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 666 transitions. Word has length 69 [2023-11-19 07:59:09,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:09,392 INFO L495 AbstractCegarLoop]: Abstraction has 480 states and 666 transitions. [2023-11-19 07:59:09,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:09,392 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 666 transitions. [2023-11-19 07:59:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-19 07:59:09,393 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:09,394 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:09,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:09,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:09,609 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:09,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1578501650, now seen corresponding path program 1 times [2023-11-19 07:59:09,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:09,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098682436] [2023-11-19 07:59:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:09,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:09,637 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:09,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [6182893] [2023-11-19 07:59:09,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:09,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:09,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:09,639 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:09,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:59:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:10,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:59:10,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:10,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:10,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:10,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098682436] [2023-11-19 07:59:10,179 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:10,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6182893] [2023-11-19 07:59:10,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6182893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:10,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:10,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 07:59:10,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303480274] [2023-11-19 07:59:10,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:10,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:10,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:10,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:10,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:10,182 INFO L87 Difference]: Start difference. First operand 480 states and 666 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:10,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:10,254 INFO L93 Difference]: Finished difference Result 492 states and 678 transitions. [2023-11-19 07:59:10,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:10,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2023-11-19 07:59:10,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:10,260 INFO L225 Difference]: With dead ends: 492 [2023-11-19 07:59:10,260 INFO L226 Difference]: Without dead ends: 490 [2023-11-19 07:59:10,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:10,261 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 13 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2766 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:10,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2766 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:10,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-19 07:59:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2023-11-19 07:59:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 466 states have (on average 1.3927038626609443) internal successors, (649), 472 states have internal predecessors, (649), 14 states have call successors, (14), 6 states have call predecessors, (14), 6 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-19 07:59:10,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 676 transitions. [2023-11-19 07:59:10,283 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 676 transitions. Word has length 70 [2023-11-19 07:59:10,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:10,283 INFO L495 AbstractCegarLoop]: Abstraction has 490 states and 676 transitions. [2023-11-19 07:59:10,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:10,284 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 676 transitions. [2023-11-19 07:59:10,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-19 07:59:10,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:10,285 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:10,313 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:10,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:59:10,503 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:10,503 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:10,504 INFO L85 PathProgramCache]: Analyzing trace with hash -1931311388, now seen corresponding path program 1 times [2023-11-19 07:59:10,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:10,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903013426] [2023-11-19 07:59:10,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:10,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:10,553 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:10,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [551265016] [2023-11-19 07:59:10,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:10,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:10,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:10,555 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:10,583 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:59:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:10,880 INFO L262 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:59:10,884 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:11,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:11,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:11,237 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:11,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:11,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903013426] [2023-11-19 07:59:11,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:11,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [551265016] [2023-11-19 07:59:11,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [551265016] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:11,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:59:11,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 9 [2023-11-19 07:59:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632235204] [2023-11-19 07:59:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:11,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:11,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:11,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:11,242 INFO L87 Difference]: Start difference. First operand 490 states and 676 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:59:11,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:11,502 INFO L93 Difference]: Finished difference Result 1959 states and 2773 transitions. [2023-11-19 07:59:11,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:59:11,503 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 85 [2023-11-19 07:59:11,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:11,514 INFO L225 Difference]: With dead ends: 1959 [2023-11-19 07:59:11,514 INFO L226 Difference]: Without dead ends: 1505 [2023-11-19 07:59:11,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 157 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:59:11,517 INFO L413 NwaCegarLoop]: 1511 mSDtfsCounter, 2609 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 3245 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:11,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 3245 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:59:11,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2023-11-19 07:59:11,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 1288. [2023-11-19 07:59:11,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1288 states, 1247 states have (on average 1.421812349639134) internal successors, (1773), 1255 states have internal predecessors, (1773), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (25), 20 states have call predecessors, (25), 23 states have call successors, (25) [2023-11-19 07:59:11,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1823 transitions. [2023-11-19 07:59:11,581 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1823 transitions. Word has length 85 [2023-11-19 07:59:11,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:11,582 INFO L495 AbstractCegarLoop]: Abstraction has 1288 states and 1823 transitions. [2023-11-19 07:59:11,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:59:11,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1823 transitions. [2023-11-19 07:59:11,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 07:59:11,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:11,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:11,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:11,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:59:11,791 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:11,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:11,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1054967553, now seen corresponding path program 1 times [2023-11-19 07:59:11,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:11,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672454221] [2023-11-19 07:59:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:11,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:11,901 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:11,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1360887508] [2023-11-19 07:59:11,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:11,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:11,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:11,908 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:11,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:59:12,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:12,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:59:12,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:12,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:12,282 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:12,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:12,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672454221] [2023-11-19 07:59:12,283 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:12,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360887508] [2023-11-19 07:59:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360887508] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:12,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:12,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:12,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17662876] [2023-11-19 07:59:12,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:12,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:12,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:12,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:12,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:12,286 INFO L87 Difference]: Start difference. First operand 1288 states and 1823 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:12,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:12,351 INFO L93 Difference]: Finished difference Result 2543 states and 3614 transitions. [2023-11-19 07:59:12,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:12,351 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-11-19 07:59:12,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:12,365 INFO L225 Difference]: With dead ends: 2543 [2023-11-19 07:59:12,365 INFO L226 Difference]: Without dead ends: 1291 [2023-11-19 07:59:12,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:12,370 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 0 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:12,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1113 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:59:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1291 states. [2023-11-19 07:59:12,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1291 to 1291. [2023-11-19 07:59:12,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1250 states have (on average 1.4208) internal successors, (1776), 1258 states have internal predecessors, (1776), 25 states have call successors, (25), 12 states have call predecessors, (25), 12 states have return successors, (25), 20 states have call predecessors, (25), 23 states have call successors, (25) [2023-11-19 07:59:12,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1826 transitions. [2023-11-19 07:59:12,440 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1826 transitions. Word has length 83 [2023-11-19 07:59:12,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:12,440 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1826 transitions. [2023-11-19 07:59:12,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:12,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1826 transitions. [2023-11-19 07:59:12,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 07:59:12,442 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:12,443 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:12,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:12,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:59:12,662 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:12,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:12,662 INFO L85 PathProgramCache]: Analyzing trace with hash -661940543, now seen corresponding path program 1 times [2023-11-19 07:59:12,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:12,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948972510] [2023-11-19 07:59:12,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:12,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:12,722 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:12,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1600627690] [2023-11-19 07:59:12,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:12,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:12,723 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:12,724 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:12,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:59:13,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:13,154 INFO L262 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:59:13,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:13,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:13,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:13,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948972510] [2023-11-19 07:59:13,404 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:13,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600627690] [2023-11-19 07:59:13,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600627690] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:13,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:13,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:59:13,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865375626] [2023-11-19 07:59:13,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:13,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:13,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:13,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:13,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:13,409 INFO L87 Difference]: Start difference. First operand 1291 states and 1826 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:13,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:13,600 INFO L93 Difference]: Finished difference Result 2900 states and 4188 transitions. [2023-11-19 07:59:13,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:13,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 83 [2023-11-19 07:59:13,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:13,613 INFO L225 Difference]: With dead ends: 2900 [2023-11-19 07:59:13,613 INFO L226 Difference]: Without dead ends: 1645 [2023-11-19 07:59:13,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:13,616 INFO L413 NwaCegarLoop]: 735 mSDtfsCounter, 345 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:13,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1261 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:13,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2023-11-19 07:59:13,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 1296. [2023-11-19 07:59:13,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1267 states have (on average 1.4490923441199683) internal successors, (1836), 1273 states have internal predecessors, (1836), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-19 07:59:13,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1868 transitions. [2023-11-19 07:59:13,677 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1868 transitions. Word has length 83 [2023-11-19 07:59:13,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:13,677 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1868 transitions. [2023-11-19 07:59:13,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:13,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1868 transitions. [2023-11-19 07:59:13,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 07:59:13,680 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:13,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:13,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:13,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:59:13,899 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:13,900 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:13,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1348528303, now seen corresponding path program 1 times [2023-11-19 07:59:13,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:13,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509378452] [2023-11-19 07:59:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:13,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:13,974 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:13,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1984926430] [2023-11-19 07:59:13,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:13,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:13,975 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:13,976 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:13,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:59:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:14,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 722 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:14,439 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:14,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-19 07:59:14,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:59:14,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:14,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509378452] [2023-11-19 07:59:14,462 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:14,462 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984926430] [2023-11-19 07:59:14,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984926430] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:14,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:14,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:59:14,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619596201] [2023-11-19 07:59:14,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:14,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:59:14,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:14,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:59:14,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:59:14,465 INFO L87 Difference]: Start difference. First operand 1296 states and 1868 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:59:14,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:14,852 INFO L93 Difference]: Finished difference Result 1645 states and 2398 transitions. [2023-11-19 07:59:14,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:59:14,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 121 [2023-11-19 07:59:14,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:14,865 INFO L225 Difference]: With dead ends: 1645 [2023-11-19 07:59:14,865 INFO L226 Difference]: Without dead ends: 1632 [2023-11-19 07:59:14,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:59:14,867 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 408 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1559 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:14,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1559 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 07:59:14,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1632 states. [2023-11-19 07:59:14,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1632 to 1300. [2023-11-19 07:59:14,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1271 states have (on average 1.4476789929189615) internal successors, (1840), 1277 states have internal predecessors, (1840), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-19 07:59:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1872 transitions. [2023-11-19 07:59:14,929 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1872 transitions. Word has length 121 [2023-11-19 07:59:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:14,930 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1872 transitions. [2023-11-19 07:59:14,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:59:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1872 transitions. [2023-11-19 07:59:14,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-11-19 07:59:14,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:14,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:14,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:15,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:59:15,147 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:15,148 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:15,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1563481125, now seen corresponding path program 1 times [2023-11-19 07:59:15,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:15,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983231636] [2023-11-19 07:59:15,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:15,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:15,233 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:15,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1244122225] [2023-11-19 07:59:15,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:15,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:15,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:15,235 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:15,255 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:59:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:15,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 926 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-19 07:59:15,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-19 07:59:15,944 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:15,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:15,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983231636] [2023-11-19 07:59:15,945 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:15,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244122225] [2023-11-19 07:59:15,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244122225] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:15,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:15,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:59:15,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528382041] [2023-11-19 07:59:15,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:15,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:59:15,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:15,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:59:15,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:59:15,948 INFO L87 Difference]: Start difference. First operand 1300 states and 1872 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:59:16,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:16,103 INFO L93 Difference]: Finished difference Result 2405 states and 3478 transitions. [2023-11-19 07:59:16,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:16,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) Word has length 132 [2023-11-19 07:59:16,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:16,113 INFO L225 Difference]: With dead ends: 2405 [2023-11-19 07:59:16,113 INFO L226 Difference]: Without dead ends: 1300 [2023-11-19 07:59:16,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:16,116 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 126 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2124 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:16,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 2124 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:16,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1300 states. [2023-11-19 07:59:16,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1300 to 1300. [2023-11-19 07:59:16,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1300 states, 1271 states have (on average 1.4476789929189615) internal successors, (1840), 1277 states have internal predecessors, (1840), 16 states have call successors, (16), 9 states have call predecessors, (16), 9 states have return successors, (15), 13 states have call predecessors, (15), 15 states have call successors, (15) [2023-11-19 07:59:16,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1871 transitions. [2023-11-19 07:59:16,174 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1871 transitions. Word has length 132 [2023-11-19 07:59:16,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:16,174 INFO L495 AbstractCegarLoop]: Abstraction has 1300 states and 1871 transitions. [2023-11-19 07:59:16,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 1 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-19 07:59:16,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1871 transitions. [2023-11-19 07:59:16,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2023-11-19 07:59:16,177 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:16,177 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:16,202 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:16,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:59:16,391 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:16,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:16,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1881596060, now seen corresponding path program 1 times [2023-11-19 07:59:16,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:16,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703707178] [2023-11-19 07:59:16,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:16,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:16,478 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:16,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495749213] [2023-11-19 07:59:16,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:16,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:16,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:16,481 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:16,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:59:17,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:17,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:59:17,157 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:17,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:59:17,275 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:17,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703707178] [2023-11-19 07:59:17,275 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:17,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495749213] [2023-11-19 07:59:17,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1495749213] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:17,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:17,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-19 07:59:17,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165977447] [2023-11-19 07:59:17,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:17,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:59:17,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:17,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:59:17,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:59:17,279 INFO L87 Difference]: Start difference. First operand 1300 states and 1871 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 07:59:17,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:17,476 INFO L93 Difference]: Finished difference Result 2413 states and 3489 transitions. [2023-11-19 07:59:17,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 07:59:17,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 137 [2023-11-19 07:59:17,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:17,485 INFO L225 Difference]: With dead ends: 2413 [2023-11-19 07:59:17,485 INFO L226 Difference]: Without dead ends: 1305 [2023-11-19 07:59:17,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:59:17,489 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 16 mSDsluCounter, 3247 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:17,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 3793 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:59:17,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1305 states. [2023-11-19 07:59:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1305. [2023-11-19 07:59:17,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1305 states, 1275 states have (on average 1.4470588235294117) internal successors, (1845), 1282 states have internal predecessors, (1845), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-19 07:59:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1877 transitions. [2023-11-19 07:59:17,553 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1877 transitions. Word has length 137 [2023-11-19 07:59:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:17,554 INFO L495 AbstractCegarLoop]: Abstraction has 1305 states and 1877 transitions. [2023-11-19 07:59:17,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 8 states have internal predecessors, (114), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-19 07:59:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1877 transitions. [2023-11-19 07:59:17,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 07:59:17,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:17,557 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:17,589 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:17,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:59:17,770 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:17,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:17,771 INFO L85 PathProgramCache]: Analyzing trace with hash 989459914, now seen corresponding path program 1 times [2023-11-19 07:59:17,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:17,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547723762] [2023-11-19 07:59:17,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:17,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:17,848 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:17,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2032299661] [2023-11-19 07:59:17,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:17,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:17,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:17,850 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:17,879 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-19 07:59:18,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:18,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-19 07:59:18,763 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:19,491 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-19 07:59:19,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:59:19,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:19,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547723762] [2023-11-19 07:59:19,492 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:19,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032299661] [2023-11-19 07:59:19,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032299661] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:19,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:19,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-19 07:59:19,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265943890] [2023-11-19 07:59:19,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:19,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:59:19,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:19,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:59:19,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:59:19,495 INFO L87 Difference]: Start difference. First operand 1305 states and 1877 transitions. Second operand has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 07:59:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:59:21,085 INFO L93 Difference]: Finished difference Result 2480 states and 3576 transitions. [2023-11-19 07:59:21,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:21,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 139 [2023-11-19 07:59:21,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:59:21,097 INFO L225 Difference]: With dead ends: 2480 [2023-11-19 07:59:21,097 INFO L226 Difference]: Without dead ends: 1320 [2023-11-19 07:59:21,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:59:21,100 INFO L413 NwaCegarLoop]: 542 mSDtfsCounter, 14 mSDsluCounter, 3905 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4447 SdHoareTripleChecker+Invalid, 1162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:59:21,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4447 Invalid, 1162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1161 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-19 07:59:21,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-11-19 07:59:21,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1314. [2023-11-19 07:59:21,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1314 states, 1284 states have (on average 1.4439252336448598) internal successors, (1854), 1291 states have internal predecessors, (1854), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (16), 13 states have call predecessors, (16), 15 states have call successors, (16) [2023-11-19 07:59:21,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1314 states to 1314 states and 1886 transitions. [2023-11-19 07:59:21,157 INFO L78 Accepts]: Start accepts. Automaton has 1314 states and 1886 transitions. Word has length 139 [2023-11-19 07:59:21,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:59:21,157 INFO L495 AbstractCegarLoop]: Abstraction has 1314 states and 1886 transitions. [2023-11-19 07:59:21,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.0) internal successors, (108), 12 states have internal predecessors, (108), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-19 07:59:21,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1314 states and 1886 transitions. [2023-11-19 07:59:21,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-11-19 07:59:21,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:59:21,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:59:21,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:21,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:59:21,388 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION === [alt_freeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-11-19 07:59:21,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:21,389 INFO L85 PathProgramCache]: Analyzing trace with hash 21269166, now seen corresponding path program 1 times [2023-11-19 07:59:21,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:21,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791496754] [2023-11-19 07:59:21,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:21,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:21,455 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:59:21,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177193440] [2023-11-19 07:59:21,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:21,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:21,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:21,457 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:21,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_beba4d08-3d71-4a0a-84a0-9be7b538928a/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-19 07:59:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:22,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 964 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-19 07:59:22,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:22,837 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-19 07:59:22,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:23,041 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 07:59:23,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:23,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791496754] [2023-11-19 07:59:23,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:59:23,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177193440] [2023-11-19 07:59:23,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177193440] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:23,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:59:23,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2023-11-19 07:59:23,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720532392] [2023-11-19 07:59:23,044 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:23,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-19 07:59:23,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:23,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-19 07:59:23,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:59:23,048 INFO L87 Difference]: Start difference. First operand 1314 states and 1886 transitions. Second operand has 12 states, 12 states have (on average 11.166666666666666) internal successors, (134), 12 states have internal predecessors, (134), 3 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14)