./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/uniq-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows 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_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/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_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/uniq-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1c4309acb998a26f408a5a77bdd700985c40cebdb2b8a8c74b4449e908f8325f --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:41:59,755 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:41:59,827 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 07:41:59,832 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:41:59,833 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:41:59,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:41:59,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:41:59,860 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:41:59,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:41:59,861 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:41:59,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:41:59,863 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:41:59,864 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:41:59,865 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:41:59,865 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:41:59,866 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:41:59,866 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:41:59,867 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:41:59,868 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:41:59,868 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:41:59,869 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:41:59,869 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:41:59,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:41:59,870 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:41:59,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:41:59,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:41:59,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:41:59,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:41:59,873 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:41:59,873 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:41:59,873 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:41:59,874 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:41:59,874 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:41:59,875 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:41:59,875 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:41:59,875 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:41:59,876 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:41:59,876 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:41:59,877 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_8cdbb10f-3366-46e7-aca2-193537b28448/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1c4309acb998a26f408a5a77bdd700985c40cebdb2b8a8c74b4449e908f8325f [2023-11-19 07:42:00,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:42:00,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:42:00,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:42:00,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:42:00,193 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:42:00,195 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/busybox-1.22.0/uniq-2.i [2023-11-19 07:42:03,414 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:42:03,919 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:42:03,920 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/sv-benchmarks/c/busybox-1.22.0/uniq-2.i [2023-11-19 07:42:03,952 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/data/3126ceb1c/f45e5661bf4644a3846306c03a1ea304/FLAGf40488452 [2023-11-19 07:42:03,966 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/data/3126ceb1c/f45e5661bf4644a3846306c03a1ea304 [2023-11-19 07:42:03,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:42:03,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:42:03,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:03,971 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:42:03,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:42:03,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:03" (1/1) ... [2023-11-19 07:42:03,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36ce0dfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:03, skipping insertion in model container [2023-11-19 07:42:03,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:42:03" (1/1) ... [2023-11-19 07:42:04,075 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:42:05,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:05,926 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:42:06,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:42:06,277 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:06,277 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:06,278 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:06,278 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:06,278 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:06,278 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:06,278 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:42:06,286 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:42:06,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06 WrapperNode [2023-11-19 07:42:06,287 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:42:06,288 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:06,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:42:06,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:42:06,296 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,383 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,518 INFO L138 Inliner]: procedures = 600, calls = 440, calls flagged for inlining = 31, calls inlined = 30, statements flattened = 1884 [2023-11-19 07:42:06,519 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:42:06,521 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:42:06,521 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:42:06,521 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:42:06,532 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,532 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,546 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,546 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,607 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,625 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,639 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,651 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,681 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:42:06,682 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:42:06,682 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:42:06,683 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:42:06,683 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (1/1) ... [2023-11-19 07:42:06,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:42:06,707 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:06,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:42:06,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:42:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure xopen [2023-11-19 07:42:06,770 INFO L138 BoogieDeclarations]: Found implementation of procedure xopen [2023-11-19 07:42:06,770 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 07:42:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 07:42:06,771 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 07:42:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-19 07:42:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 07:42:06,771 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 07:42:06,771 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 07:42:06,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:42:06,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:42:06,774 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 07:42:06,774 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 07:42:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 07:42:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:42:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:42:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:42:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 07:42:06,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:42:06,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:42:06,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:42:06,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:42:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 07:42:06,778 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 07:42:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 07:42:06,778 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 07:42:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:42:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:42:06,780 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-19 07:42:06,780 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-19 07:42:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:42:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:42:06,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:42:06,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:42:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:42:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:42:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-19 07:42:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:42:06,782 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-19 07:42:06,783 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-19 07:42:06,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:42:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 07:42:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 07:42:06,784 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 07:42:06,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:42:07,363 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:42:07,366 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:42:09,351 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:42:09,373 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:42:09,373 INFO L302 CfgBuilder]: Removed 33 assume(true) statements. [2023-11-19 07:42:09,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:09 BoogieIcfgContainer [2023-11-19 07:42:09,387 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:42:09,390 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:42:09,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:42:09,393 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:42:09,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:42:03" (1/3) ... [2023-11-19 07:42:09,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4e35a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:09, skipping insertion in model container [2023-11-19 07:42:09,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:42:06" (2/3) ... [2023-11-19 07:42:09,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4e35a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:42:09, skipping insertion in model container [2023-11-19 07:42:09,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:42:09" (3/3) ... [2023-11-19 07:42:09,398 INFO L112 eAbstractionObserver]: Analyzing ICFG uniq-2.i [2023-11-19 07:42:09,419 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:42:09,419 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 69 error locations. [2023-11-19 07:42:09,533 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:42:09,545 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;@4bd13a15, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:42:09,545 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-19 07:42:09,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 594 states, 479 states have (on average 1.6764091858037578) internal successors, (803), 550 states have internal predecessors, (803), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-19 07:42:09,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:42:09,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:09,568 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:42:09,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:09,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:09,577 INFO L85 PathProgramCache]: Analyzing trace with hash 11546245, now seen corresponding path program 1 times [2023-11-19 07:42:09,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:09,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937410312] [2023-11-19 07:42:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:09,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:09,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:10,156 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 07:42:10,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:10,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937410312] [2023-11-19 07:42:10,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937410312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:10,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:10,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:10,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258490970] [2023-11-19 07:42:10,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:10,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:10,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:10,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:10,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:10,229 INFO L87 Difference]: Start difference. First operand has 594 states, 479 states have (on average 1.6764091858037578) internal successors, (803), 550 states have internal predecessors, (803), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 07:42:10,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:10,385 INFO L93 Difference]: Finished difference Result 1169 states and 1749 transitions. [2023-11-19 07:42:10,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:10,388 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2023-11-19 07:42:10,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:10,412 INFO L225 Difference]: With dead ends: 1169 [2023-11-19 07:42:10,412 INFO L226 Difference]: Without dead ends: 564 [2023-11-19 07:42:10,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:10,424 INFO L413 NwaCegarLoop]: 796 mSDtfsCounter, 1 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1586 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:10,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1586 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:10,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-19 07:42:10,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-11-19 07:42:10,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 458 states have (on average 1.5720524017467248) internal successors, (720), 530 states have internal predecessors, (720), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 778 transitions. [2023-11-19 07:42:10,581 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 778 transitions. Word has length 4 [2023-11-19 07:42:10,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:10,582 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 778 transitions. [2023-11-19 07:42:10,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 07:42:10,583 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 778 transitions. [2023-11-19 07:42:10,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:42:10,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:10,584 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:42:10,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:42:10,585 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:10,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:10,586 INFO L85 PathProgramCache]: Analyzing trace with hash 377188228, now seen corresponding path program 1 times [2023-11-19 07:42:10,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:10,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079405083] [2023-11-19 07:42:10,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:10,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:10,812 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 07:42:10,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:10,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079405083] [2023-11-19 07:42:10,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079405083] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:10,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555585826] [2023-11-19 07:42:10,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:10,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:10,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:10,818 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:10,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:42:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:11,125 INFO L262 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:42:11,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:11,184 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 07:42:11,184 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:11,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555585826] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:11,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:11,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:42:11,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673841888] [2023-11-19 07:42:11,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:11,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:11,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:11,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:11,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:11,189 INFO L87 Difference]: Start difference. First operand 564 states and 778 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 07:42:11,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:11,256 INFO L93 Difference]: Finished difference Result 564 states and 778 transitions. [2023-11-19 07:42:11,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:11,259 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2023-11-19 07:42:11,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:11,263 INFO L225 Difference]: With dead ends: 564 [2023-11-19 07:42:11,264 INFO L226 Difference]: Without dead ends: 563 [2023-11-19 07:42:11,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:11,267 INFO L413 NwaCegarLoop]: 769 mSDtfsCounter, 5 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:11,268 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1536 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:11,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2023-11-19 07:42:11,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2023-11-19 07:42:11,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 458 states have (on average 1.5698689956331877) internal successors, (719), 529 states have internal predecessors, (719), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:11,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 777 transitions. [2023-11-19 07:42:11,310 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 777 transitions. Word has length 7 [2023-11-19 07:42:11,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:11,311 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 777 transitions. [2023-11-19 07:42:11,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 07:42:11,311 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 777 transitions. [2023-11-19 07:42:11,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:42:11,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:11,312 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 07:42:11,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:11,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:11,534 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:11,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:11,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1192066430, now seen corresponding path program 1 times [2023-11-19 07:42:11,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:11,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224153931] [2023-11-19 07:42:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:11,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:11,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:42:11,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:11,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224153931] [2023-11-19 07:42:11,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224153931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:11,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:11,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:11,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341959909] [2023-11-19 07:42:11,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:11,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:11,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:11,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:11,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:11,717 INFO L87 Difference]: Start difference. First operand 563 states and 777 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 07:42:11,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:11,756 INFO L93 Difference]: Finished difference Result 563 states and 777 transitions. [2023-11-19 07:42:11,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:11,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 07:42:11,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:11,762 INFO L225 Difference]: With dead ends: 563 [2023-11-19 07:42:11,762 INFO L226 Difference]: Without dead ends: 562 [2023-11-19 07:42:11,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:11,770 INFO L413 NwaCegarLoop]: 770 mSDtfsCounter, 0 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1537 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:11,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1537 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:11,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2023-11-19 07:42:11,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 560. [2023-11-19 07:42:11,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 456 states have (on average 1.5701754385964912) internal successors, (716), 526 states have internal predecessors, (716), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:11,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 774 transitions. [2023-11-19 07:42:11,803 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 774 transitions. Word has length 8 [2023-11-19 07:42:11,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:11,803 INFO L495 AbstractCegarLoop]: Abstraction has 560 states and 774 transitions. [2023-11-19 07:42:11,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 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 07:42:11,804 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 774 transitions. [2023-11-19 07:42:11,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:42:11,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:11,804 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:11,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:42:11,805 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:11,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:11,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1005833426, now seen corresponding path program 1 times [2023-11-19 07:42:11,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:11,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172856433] [2023-11-19 07:42:11,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:11,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:11,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:42:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:11,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:11,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172856433] [2023-11-19 07:42:11,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172856433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:11,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610831188] [2023-11-19 07:42:11,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:11,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:11,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:11,969 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:11,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:42:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:12,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 304 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:42:12,257 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:12,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:42:12,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:12,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610831188] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:12,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:12,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 07:42:12,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79793346] [2023-11-19 07:42:12,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:12,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:12,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:12,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:12,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:12,274 INFO L87 Difference]: Start difference. First operand 560 states and 774 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:12,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:12,341 INFO L93 Difference]: Finished difference Result 560 states and 774 transitions. [2023-11-19 07:42:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:12,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-19 07:42:12,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:12,346 INFO L225 Difference]: With dead ends: 560 [2023-11-19 07:42:12,346 INFO L226 Difference]: Without dead ends: 558 [2023-11-19 07:42:12,347 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:12,348 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 564 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:12,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [578 Valid, 951 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:12,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-11-19 07:42:12,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 558. [2023-11-19 07:42:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 456 states have (on average 1.5657894736842106) internal successors, (714), 524 states have internal predecessors, (714), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:12,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 772 transitions. [2023-11-19 07:42:12,374 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 772 transitions. Word has length 13 [2023-11-19 07:42:12,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:12,376 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 772 transitions. [2023-11-19 07:42:12,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:12,376 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 772 transitions. [2023-11-19 07:42:12,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:42:12,377 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:12,377 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:12,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:12,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:12,600 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:12,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:12,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1116065533, now seen corresponding path program 1 times [2023-11-19 07:42:12,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:12,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727835852] [2023-11-19 07:42:12,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:12,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:12,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:42:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:12,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727835852] [2023-11-19 07:42:12,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727835852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094473585] [2023-11-19 07:42:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:12,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:12,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:12,753 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:12,782 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:42:13,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:13,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:42:13,036 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:13,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:13,051 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:13,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094473585] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:13,081 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:13,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:42:13,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862363636] [2023-11-19 07:42:13,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:13,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:42:13,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:13,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:42:13,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:13,083 INFO L87 Difference]: Start difference. First operand 558 states and 772 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:13,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:13,170 INFO L93 Difference]: Finished difference Result 1119 states and 1549 transitions. [2023-11-19 07:42:13,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:42:13,171 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-19 07:42:13,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:13,175 INFO L225 Difference]: With dead ends: 1119 [2023-11-19 07:42:13,176 INFO L226 Difference]: Without dead ends: 567 [2023-11-19 07:42:13,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:13,180 INFO L413 NwaCegarLoop]: 768 mSDtfsCounter, 4 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3063 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:13,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3063 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:13,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2023-11-19 07:42:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2023-11-19 07:42:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 465 states have (on average 1.5548387096774194) internal successors, (723), 533 states have internal predecessors, (723), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:13,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 781 transitions. [2023-11-19 07:42:13,209 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 781 transitions. Word has length 14 [2023-11-19 07:42:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:13,210 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 781 transitions. [2023-11-19 07:42:13,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:13,210 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 781 transitions. [2023-11-19 07:42:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:42:13,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:13,211 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:13,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:13,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:13,433 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:13,434 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1644751460, now seen corresponding path program 2 times [2023-11-19 07:42:13,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:13,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848963576] [2023-11-19 07:42:13,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:13,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:13,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:42:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:13,741 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:42:13,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:13,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848963576] [2023-11-19 07:42:13,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848963576] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:13,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [446016580] [2023-11-19 07:42:13,742 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:42:13,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:13,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:13,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:13,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:42:14,014 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:42:14,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:42:14,016 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:42:14,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:14,061 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:42:14,061 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:14,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [446016580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:14,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:14,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 07:42:14,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563768171] [2023-11-19 07:42:14,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:14,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:14,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:14,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:42:14,064 INFO L87 Difference]: Start difference. First operand 567 states and 781 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:14,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:14,208 INFO L93 Difference]: Finished difference Result 567 states and 781 transitions. [2023-11-19 07:42:14,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:42:14,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-19 07:42:14,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:14,212 INFO L225 Difference]: With dead ends: 567 [2023-11-19 07:42:14,213 INFO L226 Difference]: Without dead ends: 565 [2023-11-19 07:42:14,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:42:14,214 INFO L413 NwaCegarLoop]: 754 mSDtfsCounter, 563 mSDsluCounter, 1678 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 577 SdHoareTripleChecker+Valid, 2432 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:14,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [577 Valid, 2432 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:42:14,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-11-19 07:42:14,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 565. [2023-11-19 07:42:14,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 465 states have (on average 1.5505376344086022) internal successors, (721), 531 states have internal predecessors, (721), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:14,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 779 transitions. [2023-11-19 07:42:14,243 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 779 transitions. Word has length 23 [2023-11-19 07:42:14,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:14,244 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 779 transitions. [2023-11-19 07:42:14,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:14,244 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 779 transitions. [2023-11-19 07:42:14,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:42:14,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:14,246 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:14,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:14,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:14,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2066893248, now seen corresponding path program 1 times [2023-11-19 07:42:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094156378] [2023-11-19 07:42:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:14,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:14,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:42:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:14,665 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:42:14,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:14,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094156378] [2023-11-19 07:42:14,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094156378] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:14,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:14,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:14,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076915729] [2023-11-19 07:42:14,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:14,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:14,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:14,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:14,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:14,673 INFO L87 Difference]: Start difference. First operand 565 states and 779 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:14,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:14,728 INFO L93 Difference]: Finished difference Result 1112 states and 1541 transitions. [2023-11-19 07:42:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:14,729 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-19 07:42:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:14,734 INFO L225 Difference]: With dead ends: 1112 [2023-11-19 07:42:14,734 INFO L226 Difference]: Without dead ends: 568 [2023-11-19 07:42:14,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:42:14,737 INFO L413 NwaCegarLoop]: 766 mSDtfsCounter, 1 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:14,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1526 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:14,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2023-11-19 07:42:14,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 568. [2023-11-19 07:42:14,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 468 states have (on average 1.547008547008547) internal successors, (724), 534 states have internal predecessors, (724), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 782 transitions. [2023-11-19 07:42:14,770 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 782 transitions. Word has length 28 [2023-11-19 07:42:14,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:14,771 INFO L495 AbstractCegarLoop]: Abstraction has 568 states and 782 transitions. [2023-11-19 07:42:14,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 782 transitions. [2023-11-19 07:42:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:42:14,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:14,773 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:14,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:42:14,773 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:14,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash 2008242306, now seen corresponding path program 1 times [2023-11-19 07:42:14,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:14,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855684447] [2023-11-19 07:42:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:14,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:42:14,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,005 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:42:15,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:15,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855684447] [2023-11-19 07:42:15,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855684447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:15,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:15,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:15,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434737647] [2023-11-19 07:42:15,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:15,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:15,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:15,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:15,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:15,008 INFO L87 Difference]: Start difference. First operand 568 states and 782 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:15,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:15,091 INFO L93 Difference]: Finished difference Result 854 states and 1207 transitions. [2023-11-19 07:42:15,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:15,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-11-19 07:42:15,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:15,098 INFO L225 Difference]: With dead ends: 854 [2023-11-19 07:42:15,098 INFO L226 Difference]: Without dead ends: 852 [2023-11-19 07:42:15,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:42:15,100 INFO L413 NwaCegarLoop]: 761 mSDtfsCounter, 399 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:15,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [407 Valid, 1514 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:15,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2023-11-19 07:42:15,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 572. [2023-11-19 07:42:15,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 472 states have (on average 1.5444915254237288) internal successors, (729), 538 states have internal predecessors, (729), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:15,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 787 transitions. [2023-11-19 07:42:15,164 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 787 transitions. Word has length 30 [2023-11-19 07:42:15,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:15,165 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 787 transitions. [2023-11-19 07:42:15,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 787 transitions. [2023-11-19 07:42:15,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:42:15,167 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:15,167 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:15,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:42:15,167 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:15,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:15,168 INFO L85 PathProgramCache]: Analyzing trace with hash -2128950709, now seen corresponding path program 1 times [2023-11-19 07:42:15,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:15,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402618593] [2023-11-19 07:42:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:15,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:15,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:42:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,359 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:42:15,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:15,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402618593] [2023-11-19 07:42:15,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402618593] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:15,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1292020004] [2023-11-19 07:42:15,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:15,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:15,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:15,362 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:15,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:42:15,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:15,701 INFO L262 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:42:15,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:15,762 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:42:15,763 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:42:15,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1292020004] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:15,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:15,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:42:15,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777183546] [2023-11-19 07:42:15,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:15,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:42:15,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:42:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:42:15,857 INFO L87 Difference]: Start difference. First operand 572 states and 787 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:42:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:16,059 INFO L93 Difference]: Finished difference Result 1146 states and 1582 transitions. [2023-11-19 07:42:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:42:16,060 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-19 07:42:16,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:16,064 INFO L225 Difference]: With dead ends: 1146 [2023-11-19 07:42:16,064 INFO L226 Difference]: Without dead ends: 589 [2023-11-19 07:42:16,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:42:16,067 INFO L413 NwaCegarLoop]: 760 mSDtfsCounter, 7 mSDsluCounter, 3785 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 4545 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:16,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 4545 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:42:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2023-11-19 07:42:16,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 589. [2023-11-19 07:42:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 490 states have (on average 1.5224489795918368) internal successors, (746), 555 states have internal predecessors, (746), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:16,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 804 transitions. [2023-11-19 07:42:16,102 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 804 transitions. Word has length 31 [2023-11-19 07:42:16,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:16,103 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 804 transitions. [2023-11-19 07:42:16,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:42:16,103 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 804 transitions. [2023-11-19 07:42:16,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:42:16,105 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:16,106 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:16,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:16,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:16,331 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:16,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1992525020, now seen corresponding path program 1 times [2023-11-19 07:42:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:16,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517535791] [2023-11-19 07:42:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:42:16,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:16,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517535791] [2023-11-19 07:42:16,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517535791] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:16,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:16,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:16,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617315287] [2023-11-19 07:42:16,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:16,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:16,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:16,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:16,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:16,587 INFO L87 Difference]: Start difference. First operand 589 states and 804 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:16,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:16,672 INFO L93 Difference]: Finished difference Result 603 states and 820 transitions. [2023-11-19 07:42:16,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:16,673 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-11-19 07:42:16,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:16,679 INFO L225 Difference]: With dead ends: 603 [2023-11-19 07:42:16,679 INFO L226 Difference]: Without dead ends: 601 [2023-11-19 07:42:16,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:42:16,680 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 3 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1521 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:16,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1521 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:42:16,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2023-11-19 07:42:16,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 599. [2023-11-19 07:42:16,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 500 states have (on average 1.518) internal successors, (759), 565 states have internal predecessors, (759), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 817 transitions. [2023-11-19 07:42:16,711 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 817 transitions. Word has length 50 [2023-11-19 07:42:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:16,711 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 817 transitions. [2023-11-19 07:42:16,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:16,712 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 817 transitions. [2023-11-19 07:42:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:42:16,713 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:16,713 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:16,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:42:16,714 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:16,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:16,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1992526749, now seen corresponding path program 1 times [2023-11-19 07:42:16,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:16,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218503458] [2023-11-19 07:42:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:16,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:16,900 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:42:16,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:16,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218503458] [2023-11-19 07:42:16,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218503458] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:16,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:16,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:42:16,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816404209] [2023-11-19 07:42:16,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:16,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:42:16,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:16,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:42:16,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:42:16,903 INFO L87 Difference]: Start difference. First operand 599 states and 817 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:16,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:16,945 INFO L93 Difference]: Finished difference Result 599 states and 817 transitions. [2023-11-19 07:42:16,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:42:16,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-11-19 07:42:16,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:16,949 INFO L225 Difference]: With dead ends: 599 [2023-11-19 07:42:16,950 INFO L226 Difference]: Without dead ends: 598 [2023-11-19 07:42:16,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 07:42:16,951 INFO L413 NwaCegarLoop]: 764 mSDtfsCounter, 0 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:16,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1524 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:16,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2023-11-19 07:42:16,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 594. [2023-11-19 07:42:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 496 states have (on average 1.5181451612903225) internal successors, (753), 560 states have internal predecessors, (753), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 811 transitions. [2023-11-19 07:42:17,001 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 811 transitions. Word has length 50 [2023-11-19 07:42:17,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:17,001 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 811 transitions. [2023-11-19 07:42:17,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 811 transitions. [2023-11-19 07:42:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 07:42:17,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:17,005 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:17,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:42:17,005 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:17,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 229690619, now seen corresponding path program 1 times [2023-11-19 07:42:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:17,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178001940] [2023-11-19 07:42:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:17,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:17,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:17,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:17,293 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:42:17,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:17,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178001940] [2023-11-19 07:42:17,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178001940] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:17,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338897299] [2023-11-19 07:42:17,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:17,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:17,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:17,295 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:17,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:42:17,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:17,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 697 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:42:17,744 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:17,767 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:42:17,768 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:17,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338897299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:17,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:17,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:42:17,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444371334] [2023-11-19 07:42:17,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:17,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:17,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:17,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:17,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:17,772 INFO L87 Difference]: Start difference. First operand 594 states and 811 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:17,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:17,901 INFO L93 Difference]: Finished difference Result 878 states and 1235 transitions. [2023-11-19 07:42:17,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:17,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-11-19 07:42:17,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:17,908 INFO L225 Difference]: With dead ends: 878 [2023-11-19 07:42:17,908 INFO L226 Difference]: Without dead ends: 877 [2023-11-19 07:42:17,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 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 07:42:17,910 INFO L413 NwaCegarLoop]: 1172 mSDtfsCounter, 799 mSDsluCounter, 758 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1930 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:17,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 1930 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:42:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 877 states. [2023-11-19 07:42:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 877 to 593. [2023-11-19 07:42:17,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 496 states have (on average 1.5161290322580645) internal successors, (752), 559 states have internal predecessors, (752), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:17,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 810 transitions. [2023-11-19 07:42:17,950 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 810 transitions. Word has length 52 [2023-11-19 07:42:17,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:17,952 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 810 transitions. [2023-11-19 07:42:17,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:17,952 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 810 transitions. [2023-11-19 07:42:17,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:42:17,953 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:17,954 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:17,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:18,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:42:18,167 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:18,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:18,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1469524952, now seen corresponding path program 1 times [2023-11-19 07:42:18,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:18,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696483599] [2023-11-19 07:42:18,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:18,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:18,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:18,469 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:42:18,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:18,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696483599] [2023-11-19 07:42:18,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696483599] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:18,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [418717195] [2023-11-19 07:42:18,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:18,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:18,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:18,471 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:18,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:42:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:18,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:42:18,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:18,923 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:42:18,923 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:18,970 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:42:18,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [418717195] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:18,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:18,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:42:18,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85628507] [2023-11-19 07:42:18,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:18,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:42:18,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:18,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:42:18,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:18,973 INFO L87 Difference]: Start difference. First operand 593 states and 810 transitions. Second operand has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:19,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:19,210 INFO L93 Difference]: Finished difference Result 1726 states and 2500 transitions. [2023-11-19 07:42:19,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:42:19,211 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 53 [2023-11-19 07:42:19,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:19,221 INFO L225 Difference]: With dead ends: 1726 [2023-11-19 07:42:19,222 INFO L226 Difference]: Without dead ends: 1725 [2023-11-19 07:42:19,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:19,223 INFO L413 NwaCegarLoop]: 758 mSDtfsCounter, 3184 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3216 SdHoareTripleChecker+Valid, 3074 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:19,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3216 Valid, 3074 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:42:19,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1725 states. [2023-11-19 07:42:19,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1725 to 605. [2023-11-19 07:42:19,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 508 states have (on average 1.5098425196850394) internal successors, (767), 571 states have internal predecessors, (767), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:19,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 825 transitions. [2023-11-19 07:42:19,312 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 825 transitions. Word has length 53 [2023-11-19 07:42:19,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:19,312 INFO L495 AbstractCegarLoop]: Abstraction has 605 states and 825 transitions. [2023-11-19 07:42:19,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.333333333333333) internal successors, (38), 7 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:19,313 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 825 transitions. [2023-11-19 07:42:19,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:42:19,313 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:19,313 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:19,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:19,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:19,514 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:19,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1011698309, now seen corresponding path program 1 times [2023-11-19 07:42:19,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423507013] [2023-11-19 07:42:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:19,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:19,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:42:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:19,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423507013] [2023-11-19 07:42:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423507013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:19,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1007885801] [2023-11-19 07:42:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:19,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:19,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:19,735 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:19,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:42:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:20,170 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:42:20,174 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:20,190 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:42:20,190 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:42:20,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1007885801] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:20,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:20,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:42:20,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706327905] [2023-11-19 07:42:20,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:20,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:42:20,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:42:20,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:20,212 INFO L87 Difference]: Start difference. First operand 605 states and 825 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:20,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:20,285 INFO L93 Difference]: Finished difference Result 1184 states and 1626 transitions. [2023-11-19 07:42:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:42:20,286 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-11-19 07:42:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:20,290 INFO L225 Difference]: With dead ends: 1184 [2023-11-19 07:42:20,290 INFO L226 Difference]: Without dead ends: 623 [2023-11-19 07:42:20,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:20,292 INFO L413 NwaCegarLoop]: 763 mSDtfsCounter, 4 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:20,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2281 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:42:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2023-11-19 07:42:20,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2023-11-19 07:42:20,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 526 states have (on average 1.4923954372623573) internal successors, (785), 589 states have internal predecessors, (785), 34 states have call successors, (34), 11 states have call predecessors, (34), 8 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-11-19 07:42:20,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 843 transitions. [2023-11-19 07:42:20,324 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 843 transitions. Word has length 58 [2023-11-19 07:42:20,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:20,325 INFO L495 AbstractCegarLoop]: Abstraction has 623 states and 843 transitions. [2023-11-19 07:42:20,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:20,325 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 843 transitions. [2023-11-19 07:42:20,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-19 07:42:20,326 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:20,326 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:20,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:20,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:20,549 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:20,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash -383311954, now seen corresponding path program 1 times [2023-11-19 07:42:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:20,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607751107] [2023-11-19 07:42:20,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:20,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:20,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:20,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:42:20,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:20,891 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:42:20,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:20,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607751107] [2023-11-19 07:42:20,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607751107] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:20,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:20,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:20,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108202167] [2023-11-19 07:42:20,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:20,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:20,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:20,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:20,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:20,893 INFO L87 Difference]: Start difference. First operand 623 states and 843 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:42:21,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:21,558 INFO L93 Difference]: Finished difference Result 1274 states and 1761 transitions. [2023-11-19 07:42:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:21,559 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2023-11-19 07:42:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:21,564 INFO L225 Difference]: With dead ends: 1274 [2023-11-19 07:42:21,565 INFO L226 Difference]: Without dead ends: 755 [2023-11-19 07:42:21,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:21,569 INFO L413 NwaCegarLoop]: 745 mSDtfsCounter, 187 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1941 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:21,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1941 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:42:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-11-19 07:42:21,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 664. [2023-11-19 07:42:21,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 566 states have (on average 1.4840989399293287) internal successors, (840), 629 states have internal predecessors, (840), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:21,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 900 transitions. [2023-11-19 07:42:21,613 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 900 transitions. Word has length 62 [2023-11-19 07:42:21,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:21,613 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 900 transitions. [2023-11-19 07:42:21,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:42:21,614 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 900 transitions. [2023-11-19 07:42:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 07:42:21,615 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:21,615 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:21,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:42:21,615 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:21,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1004415475, now seen corresponding path program 1 times [2023-11-19 07:42:21,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:21,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973926312] [2023-11-19 07:42:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:21,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:21,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:21,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:42:21,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:21,865 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:42:21,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:21,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973926312] [2023-11-19 07:42:21,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973926312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:21,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:21,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:21,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551991210] [2023-11-19 07:42:21,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:21,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:21,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:21,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:21,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:21,869 INFO L87 Difference]: Start difference. First operand 664 states and 900 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:22,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:22,380 INFO L93 Difference]: Finished difference Result 700 states and 948 transitions. [2023-11-19 07:42:22,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:22,381 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 64 [2023-11-19 07:42:22,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:22,386 INFO L225 Difference]: With dead ends: 700 [2023-11-19 07:42:22,386 INFO L226 Difference]: Without dead ends: 698 [2023-11-19 07:42:22,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:22,387 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 64 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 2009 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:22,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 2009 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:42:22,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-19 07:42:22,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 664. [2023-11-19 07:42:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 566 states have (on average 1.480565371024735) internal successors, (838), 629 states have internal predecessors, (838), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:22,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 898 transitions. [2023-11-19 07:42:22,427 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 898 transitions. Word has length 64 [2023-11-19 07:42:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:22,427 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 898 transitions. [2023-11-19 07:42:22,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:22,428 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 898 transitions. [2023-11-19 07:42:22,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:42:22,428 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:22,429 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:22,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:42:22,429 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:22,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:22,430 INFO L85 PathProgramCache]: Analyzing trace with hash -1762905155, now seen corresponding path program 2 times [2023-11-19 07:42:22,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:22,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439655749] [2023-11-19 07:42:22,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:22,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:22,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:22,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:22,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:22,789 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:42:22,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:22,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439655749] [2023-11-19 07:42:22,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439655749] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:22,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572152253] [2023-11-19 07:42:22,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:42:22,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:22,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:22,791 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:22,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:42:23,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:42:23,281 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:42:23,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:42:23,286 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:23,366 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-19 07:42:23,366 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:23,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572152253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:23,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:23,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-19 07:42:23,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942287734] [2023-11-19 07:42:23,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:23,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:42:23,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:23,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:42:23,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:42:23,369 INFO L87 Difference]: Start difference. First operand 664 states and 898 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:23,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:23,608 INFO L93 Difference]: Finished difference Result 1253 states and 1715 transitions. [2023-11-19 07:42:23,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:42:23,609 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 65 [2023-11-19 07:42:23,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:23,613 INFO L225 Difference]: With dead ends: 1253 [2023-11-19 07:42:23,613 INFO L226 Difference]: Without dead ends: 664 [2023-11-19 07:42:23,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-19 07:42:23,615 INFO L413 NwaCegarLoop]: 748 mSDtfsCounter, 572 mSDsluCounter, 2212 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 586 SdHoareTripleChecker+Valid, 2960 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:23,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [586 Valid, 2960 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:42:23,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-11-19 07:42:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 664. [2023-11-19 07:42:23,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 664 states, 566 states have (on average 1.4787985865724382) internal successors, (837), 629 states have internal predecessors, (837), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:23,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 897 transitions. [2023-11-19 07:42:23,660 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 897 transitions. Word has length 65 [2023-11-19 07:42:23,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:23,661 INFO L495 AbstractCegarLoop]: Abstraction has 664 states and 897 transitions. [2023-11-19 07:42:23,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:23,661 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 897 transitions. [2023-11-19 07:42:23,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:42:23,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:23,667 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:23,694 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:23,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-19 07:42:23,883 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:23,883 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash 1776855219, now seen corresponding path program 2 times [2023-11-19 07:42:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824540717] [2023-11-19 07:42:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:24,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:24,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:24,224 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-19 07:42:24,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:24,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824540717] [2023-11-19 07:42:24,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824540717] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:24,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401679173] [2023-11-19 07:42:24,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:42:24,226 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:24,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:24,227 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:24,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:42:24,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:42:24,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:42:24,837 INFO L262 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:42:24,840 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:24,911 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-19 07:42:24,912 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-19 07:42:25,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401679173] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:25,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:25,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:42:25,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960130501] [2023-11-19 07:42:25,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:25,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:42:25,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:25,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:42:25,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:42:25,007 INFO L87 Difference]: Start difference. First operand 664 states and 897 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:25,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:25,494 INFO L93 Difference]: Finished difference Result 1310 states and 1786 transitions. [2023-11-19 07:42:25,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:42:25,494 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-11-19 07:42:25,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:25,499 INFO L225 Difference]: With dead ends: 1310 [2023-11-19 07:42:25,499 INFO L226 Difference]: Without dead ends: 699 [2023-11-19 07:42:25,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:42:25,502 INFO L413 NwaCegarLoop]: 759 mSDtfsCounter, 11 mSDsluCounter, 3016 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3775 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:25,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3775 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:42:25,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-19 07:42:25,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2023-11-19 07:42:25,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 602 states have (on average 1.4485049833887043) internal successors, (872), 664 states have internal predecessors, (872), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:25,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 932 transitions. [2023-11-19 07:42:25,540 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 932 transitions. Word has length 76 [2023-11-19 07:42:25,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:25,540 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 932 transitions. [2023-11-19 07:42:25,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:25,540 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 932 transitions. [2023-11-19 07:42:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-19 07:42:25,542 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:25,542 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:25,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:25,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-19 07:42:25,755 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:25,755 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:25,755 INFO L85 PathProgramCache]: Analyzing trace with hash 880210377, now seen corresponding path program 1 times [2023-11-19 07:42:25,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:25,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26445672] [2023-11-19 07:42:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:25,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:42:26,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:26,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26445672] [2023-11-19 07:42:26,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26445672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:26,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086697919] [2023-11-19 07:42:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:26,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:26,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:26,264 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:26,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:42:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:26,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 966 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:42:26,939 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:26,981 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:42:26,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:42:27,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086697919] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:27,080 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:27,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:42:27,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554651801] [2023-11-19 07:42:27,081 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:27,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:42:27,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:27,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:42:27,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:42:27,083 INFO L87 Difference]: Start difference. First operand 699 states and 932 transitions. Second operand has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:27,736 INFO L93 Difference]: Finished difference Result 3934 states and 5698 transitions. [2023-11-19 07:42:27,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:42:27,737 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 100 [2023-11-19 07:42:27,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:27,759 INFO L225 Difference]: With dead ends: 3934 [2023-11-19 07:42:27,759 INFO L226 Difference]: Without dead ends: 3933 [2023-11-19 07:42:27,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:42:27,761 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 6940 mSDsluCounter, 6175 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7020 SdHoareTripleChecker+Valid, 6932 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:27,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7020 Valid, 6932 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:42:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3933 states. [2023-11-19 07:42:27,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3933 to 723. [2023-11-19 07:42:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 626 states have (on average 1.4408945686900958) internal successors, (902), 688 states have internal predecessors, (902), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:27,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 962 transitions. [2023-11-19 07:42:27,838 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 962 transitions. Word has length 100 [2023-11-19 07:42:27,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:27,839 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 962 transitions. [2023-11-19 07:42:27,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.833333333333333) internal successors, (70), 13 states have internal predecessors, (70), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:27,839 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 962 transitions. [2023-11-19 07:42:27,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-19 07:42:27,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:27,841 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:27,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:28,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:28,067 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:28,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:28,067 INFO L85 PathProgramCache]: Analyzing trace with hash 1117754262, now seen corresponding path program 1 times [2023-11-19 07:42:28,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:28,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829333388] [2023-11-19 07:42:28,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:28,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:28,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:28,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:42:28,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:28,477 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:42:28,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:28,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829333388] [2023-11-19 07:42:28,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829333388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:28,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:28,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:28,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241077423] [2023-11-19 07:42:28,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:28,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:28,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:28,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:28,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:28,480 INFO L87 Difference]: Start difference. First operand 723 states and 962 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:29,174 INFO L93 Difference]: Finished difference Result 761 states and 1016 transitions. [2023-11-19 07:42:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:29,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 106 [2023-11-19 07:42:29,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:29,179 INFO L225 Difference]: With dead ends: 761 [2023-11-19 07:42:29,180 INFO L226 Difference]: Without dead ends: 756 [2023-11-19 07:42:29,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:29,181 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 415 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:29,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 1540 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:42:29,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2023-11-19 07:42:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 718. [2023-11-19 07:42:29,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 626 states have (on average 1.4329073482428114) internal successors, (897), 683 states have internal predecessors, (897), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:29,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 957 transitions. [2023-11-19 07:42:29,261 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 957 transitions. Word has length 106 [2023-11-19 07:42:29,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:29,262 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 957 transitions. [2023-11-19 07:42:29,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:29,262 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 957 transitions. [2023-11-19 07:42:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-19 07:42:29,264 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:29,264 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:42:29,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-19 07:42:29,265 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:29,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash 290644500, now seen corresponding path program 1 times [2023-11-19 07:42:29,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:29,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235388548] [2023-11-19 07:42:29,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:29,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:29,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:42:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:29,603 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:42:29,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:29,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235388548] [2023-11-19 07:42:29,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235388548] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:29,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:29,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:29,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315106575] [2023-11-19 07:42:29,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:29,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:29,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:29,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:29,608 INFO L87 Difference]: Start difference. First operand 718 states and 957 transitions. Second operand has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:30,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:30,305 INFO L93 Difference]: Finished difference Result 801 states and 1078 transitions. [2023-11-19 07:42:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:30,306 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 107 [2023-11-19 07:42:30,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:30,311 INFO L225 Difference]: With dead ends: 801 [2023-11-19 07:42:30,312 INFO L226 Difference]: Without dead ends: 796 [2023-11-19 07:42:30,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:30,313 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 443 mSDsluCounter, 938 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:30,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 1675 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:42:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 796 states. [2023-11-19 07:42:30,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 796 to 701. [2023-11-19 07:42:30,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 614 states have (on average 1.4250814332247557) internal successors, (875), 666 states have internal predecessors, (875), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:30,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 935 transitions. [2023-11-19 07:42:30,361 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 935 transitions. Word has length 107 [2023-11-19 07:42:30,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:30,361 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 935 transitions. [2023-11-19 07:42:30,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:30,362 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 935 transitions. [2023-11-19 07:42:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-19 07:42:30,363 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:30,364 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2023-11-19 07:42:30,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-19 07:42:30,364 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:30,364 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:30,364 INFO L85 PathProgramCache]: Analyzing trace with hash 881496921, now seen corresponding path program 1 times [2023-11-19 07:42:30,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:30,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259335468] [2023-11-19 07:42:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:30,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:30,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:30,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:30,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:42:30,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:30,805 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:42:30,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:30,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259335468] [2023-11-19 07:42:30,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259335468] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:30,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973505595] [2023-11-19 07:42:30,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:30,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:30,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:30,811 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:30,834 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:42:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:31,472 INFO L262 TraceCheckSpWp]: Trace formula consists of 1052 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:42:31,476 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:31,535 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-19 07:42:31,535 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:42:31,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973505595] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:31,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:42:31,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-19 07:42:31,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980558261] [2023-11-19 07:42:31,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:31,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:31,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:31,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:31,538 INFO L87 Difference]: Start difference. First operand 701 states and 935 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:42:31,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:31,762 INFO L93 Difference]: Finished difference Result 1289 states and 1766 transitions. [2023-11-19 07:42:31,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:42:31,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 108 [2023-11-19 07:42:31,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:31,768 INFO L225 Difference]: With dead ends: 1289 [2023-11-19 07:42:31,768 INFO L226 Difference]: Without dead ends: 778 [2023-11-19 07:42:31,770 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:31,771 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 474 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:31,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [485 Valid, 1980 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:42:31,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2023-11-19 07:42:31,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 702. [2023-11-19 07:42:31,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 617 states have (on average 1.4197730956239871) internal successors, (876), 667 states have internal predecessors, (876), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:31,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 936 transitions. [2023-11-19 07:42:31,815 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 936 transitions. Word has length 108 [2023-11-19 07:42:31,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:31,815 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 936 transitions. [2023-11-19 07:42:31,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 07:42:31,816 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 936 transitions. [2023-11-19 07:42:31,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-19 07:42:31,817 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:31,817 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2023-11-19 07:42:31,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:32,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-19 07:42:32,039 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:32,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:32,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1009999644, now seen corresponding path program 1 times [2023-11-19 07:42:32,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:32,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914089516] [2023-11-19 07:42:32,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:32,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:32,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:32,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:42:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:32,449 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-19 07:42:32,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:32,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914089516] [2023-11-19 07:42:32,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914089516] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:32,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:32,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:42:32,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636220389] [2023-11-19 07:42:32,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:32,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:42:32,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:32,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:42:32,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:32,452 INFO L87 Difference]: Start difference. First operand 702 states and 936 transitions. Second operand has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:33,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:33,024 INFO L93 Difference]: Finished difference Result 736 states and 984 transitions. [2023-11-19 07:42:33,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:42:33,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 110 [2023-11-19 07:42:33,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:33,030 INFO L225 Difference]: With dead ends: 736 [2023-11-19 07:42:33,031 INFO L226 Difference]: Without dead ends: 735 [2023-11-19 07:42:33,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:42:33,032 INFO L413 NwaCegarLoop]: 734 mSDtfsCounter, 65 mSDsluCounter, 1235 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1969 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:33,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1969 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:42:33,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-11-19 07:42:33,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 701. [2023-11-19 07:42:33,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 617 states have (on average 1.4181523500810373) internal successors, (875), 666 states have internal predecessors, (875), 35 states have call successors, (35), 11 states have call predecessors, (35), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-19 07:42:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 935 transitions. [2023-11-19 07:42:33,080 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 935 transitions. Word has length 110 [2023-11-19 07:42:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:33,080 INFO L495 AbstractCegarLoop]: Abstraction has 701 states and 935 transitions. [2023-11-19 07:42:33,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 935 transitions. [2023-11-19 07:42:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-19 07:42:33,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:33,083 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2023-11-19 07:42:33,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-19 07:42:33,083 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:33,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:33,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1245218393, now seen corresponding path program 1 times [2023-11-19 07:42:33,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:33,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011836713] [2023-11-19 07:42:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:33,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:34,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:34,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:34,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:42:34,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:34,160 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-19 07:42:34,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:34,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011836713] [2023-11-19 07:42:34,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011836713] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:42:34,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:42:34,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:42:34,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711061692] [2023-11-19 07:42:34,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:42:34,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:42:34,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:34,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:42:34,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:42:34,163 INFO L87 Difference]: Start difference. First operand 701 states and 935 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:34,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:34,776 INFO L93 Difference]: Finished difference Result 1278 states and 1743 transitions. [2023-11-19 07:42:34,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:42:34,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 111 [2023-11-19 07:42:34,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:34,781 INFO L225 Difference]: With dead ends: 1278 [2023-11-19 07:42:34,781 INFO L226 Difference]: Without dead ends: 735 [2023-11-19 07:42:34,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:34,786 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 65 mSDsluCounter, 1961 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 2693 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:34,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 2693 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-19 07:42:34,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-11-19 07:42:34,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 704. [2023-11-19 07:42:34,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 704 states, 619 states have (on average 1.4184168012924072) internal successors, (878), 669 states have internal predecessors, (878), 35 states have call successors, (35), 11 states have call predecessors, (35), 9 states have return successors, (28), 25 states have call predecessors, (28), 25 states have call successors, (28) [2023-11-19 07:42:34,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 704 states to 704 states and 941 transitions. [2023-11-19 07:42:34,834 INFO L78 Accepts]: Start accepts. Automaton has 704 states and 941 transitions. Word has length 111 [2023-11-19 07:42:34,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:34,834 INFO L495 AbstractCegarLoop]: Abstraction has 704 states and 941 transitions. [2023-11-19 07:42:34,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:42:34,835 INFO L276 IsEmpty]: Start isEmpty. Operand 704 states and 941 transitions. [2023-11-19 07:42:34,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-19 07:42:34,836 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:34,837 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 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] [2023-11-19 07:42:34,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-19 07:42:34,837 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:34,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:34,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1834668501, now seen corresponding path program 1 times [2023-11-19 07:42:34,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:34,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388312215] [2023-11-19 07:42:34,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:34,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:35,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:35,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:42:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:35,708 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-19 07:42:35,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:35,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388312215] [2023-11-19 07:42:35,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388312215] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:35,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204209507] [2023-11-19 07:42:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:35,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:35,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:35,710 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:35,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-19 07:42:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:37,881 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:42:37,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-19 07:42:37,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:38,020 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-19 07:42:38,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204209507] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:38,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:38,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-19 07:42:38,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721767942] [2023-11-19 07:42:38,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:38,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:42:38,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:38,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:42:38,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:42:38,024 INFO L87 Difference]: Start difference. First operand 704 states and 941 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:42:38,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:38,782 INFO L93 Difference]: Finished difference Result 1292 states and 1769 transitions. [2023-11-19 07:42:38,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 07:42:38,783 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 112 [2023-11-19 07:42:38,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:38,788 INFO L225 Difference]: With dead ends: 1292 [2023-11-19 07:42:38,788 INFO L226 Difference]: Without dead ends: 746 [2023-11-19 07:42:38,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:42:38,791 INFO L413 NwaCegarLoop]: 733 mSDtfsCounter, 74 mSDsluCounter, 1958 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 2691 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:38,797 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 2691 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-19 07:42:38,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2023-11-19 07:42:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 713. [2023-11-19 07:42:38,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 627 states have (on average 1.4226475279106858) internal successors, (892), 677 states have internal predecessors, (892), 35 states have call successors, (35), 12 states have call predecessors, (35), 10 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) [2023-11-19 07:42:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 954 transitions. [2023-11-19 07:42:38,857 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 954 transitions. Word has length 112 [2023-11-19 07:42:38,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:38,858 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 954 transitions. [2023-11-19 07:42:38,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 10 states have internal predecessors, (57), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:42:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 954 transitions. [2023-11-19 07:42:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-19 07:42:38,862 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:38,862 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:42:38,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:39,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-19 07:42:39,087 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:39,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:39,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1474034082, now seen corresponding path program 1 times [2023-11-19 07:42:39,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:39,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109951111] [2023-11-19 07:42:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:39,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:39,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:39,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:39,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:39,561 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 07:42:39,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109951111] [2023-11-19 07:42:39,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109951111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:39,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [683240630] [2023-11-19 07:42:39,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:39,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:39,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:39,563 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:39,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-19 07:42:40,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:40,310 INFO L262 TraceCheckSpWp]: Trace formula consists of 996 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:42:40,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 07:42:40,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-19 07:42:40,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [683240630] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:40,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:40,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:42:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052324759] [2023-11-19 07:42:40,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:40,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:42:40,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:40,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:42:40,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:40,539 INFO L87 Difference]: Start difference. First operand 713 states and 954 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:40,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:40,684 INFO L93 Difference]: Finished difference Result 822 states and 1071 transitions. [2023-11-19 07:42:40,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:42:40,684 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 113 [2023-11-19 07:42:40,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:40,689 INFO L225 Difference]: With dead ends: 822 [2023-11-19 07:42:40,689 INFO L226 Difference]: Without dead ends: 821 [2023-11-19 07:42:40,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 224 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:42:40,691 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 5 mSDsluCounter, 1498 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:40,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2245 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:42:40,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 821 states. [2023-11-19 07:42:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 821 to 818. [2023-11-19 07:42:40,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 732 states have (on average 1.3702185792349726) internal successors, (1003), 782 states have internal predecessors, (1003), 35 states have call successors, (35), 12 states have call predecessors, (35), 10 states have return successors, (27), 25 states have call predecessors, (27), 25 states have call successors, (27) [2023-11-19 07:42:40,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1065 transitions. [2023-11-19 07:42:40,746 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1065 transitions. Word has length 113 [2023-11-19 07:42:40,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:40,746 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1065 transitions. [2023-11-19 07:42:40,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:42:40,747 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1065 transitions. [2023-11-19 07:42:40,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-11-19 07:42:40,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:40,749 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 4, 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] [2023-11-19 07:42:40,773 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-19 07:42:40,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-19 07:42:40,963 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-19 07:42:40,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:42:40,963 INFO L85 PathProgramCache]: Analyzing trace with hash 640517465, now seen corresponding path program 2 times [2023-11-19 07:42:40,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:42:40,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435448525] [2023-11-19 07:42:40,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:42:40,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:42:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:41,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:42:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:41,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2023-11-19 07:42:41,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:42:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-19 07:42:42,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:42:42,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435448525] [2023-11-19 07:42:42,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435448525] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:42:42,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401334922] [2023-11-19 07:42:42,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:42:42,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:42:42,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:42:42,170 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:42:42,186 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-19 07:42:43,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:42:43,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:42:43,871 INFO L262 TraceCheckSpWp]: Trace formula consists of 1117 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 07:42:43,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:42:43,953 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-19 07:42:43,953 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:42:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-19 07:42:44,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401334922] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:42:44,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:42:44,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-11-19 07:42:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258793748] [2023-11-19 07:42:44,203 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:42:44,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:42:44,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:42:44,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:42:44,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:42:44,205 INFO L87 Difference]: Start difference. First operand 818 states and 1065 transitions. Second operand has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:42:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:42:45,585 INFO L93 Difference]: Finished difference Result 1425 states and 1923 transitions. [2023-11-19 07:42:45,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 07:42:45,586 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 115 [2023-11-19 07:42:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:42:45,591 INFO L225 Difference]: With dead ends: 1425 [2023-11-19 07:42:45,592 INFO L226 Difference]: Without dead ends: 870 [2023-11-19 07:42:45,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=386, Invalid=946, Unknown=0, NotChecked=0, Total=1332 [2023-11-19 07:42:45,595 INFO L413 NwaCegarLoop]: 737 mSDtfsCounter, 88 mSDsluCounter, 4878 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 5615 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:42:45,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 5615 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-19 07:42:45,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2023-11-19 07:42:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 828. [2023-11-19 07:42:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 741 states have (on average 1.3765182186234817) internal successors, (1020), 792 states have internal predecessors, (1020), 35 states have call successors, (35), 12 states have call predecessors, (35), 11 states have return successors, (29), 25 states have call predecessors, (29), 25 states have call successors, (29) [2023-11-19 07:42:45,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1084 transitions. [2023-11-19 07:42:45,648 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1084 transitions. Word has length 115 [2023-11-19 07:42:45,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:42:45,649 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1084 transitions. [2023-11-19 07:42:45,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.3) internal successors, (66), 19 states have internal predecessors, (66), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-19 07:42:45,649 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1084 transitions. [2023-11-19 07:42:45,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-19 07:42:45,651 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:42:45,651 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 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] [2023-11-19 07:42:45,683 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cdbb10f-3366-46e7-aca2-193537b28448/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0