./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/od-3.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_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/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_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/od-3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/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_cf46602f-7a9f-448b-8856-2068a64ec8cb/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 8a997af929127373cb395687e4393c920ac8d64592c7d6de23ea302f85930f8b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:17,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:17,713 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 07:43:17,719 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:17,719 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:17,748 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:17,748 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:17,749 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:17,750 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:17,751 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:17,752 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:17,753 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:17,753 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:17,754 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:17,755 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:17,756 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:17,756 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:17,757 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:17,758 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:17,759 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:17,759 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:43:17,760 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:17,761 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:17,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:17,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:17,763 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:17,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:17,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:17,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:17,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:17,766 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:17,766 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:17,767 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:17,767 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:17,767 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:17,768 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:17,768 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:17,768 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:17,769 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_cf46602f-7a9f-448b-8856-2068a64ec8cb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a997af929127373cb395687e4393c920ac8d64592c7d6de23ea302f85930f8b [2023-11-19 07:43:18,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:18,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:18,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:18,093 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:18,094 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:18,095 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/busybox-1.22.0/od-3.i [2023-11-19 07:43:21,179 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:21,742 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:21,744 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/sv-benchmarks/c/busybox-1.22.0/od-3.i [2023-11-19 07:43:21,791 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/data/96ac08321/20554904e355413c95519ece0ce8a381/FLAG141b5caf5 [2023-11-19 07:43:21,813 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/data/96ac08321/20554904e355413c95519ece0ce8a381 [2023-11-19 07:43:21,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:21,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:21,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:21,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:21,832 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:21,835 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:21,837 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c2f874c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:21, skipping insertion in model container [2023-11-19 07:43:21,837 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:21" (1/1) ... [2023-11-19 07:43:22,044 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:24,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:24,708 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:25,026 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:25,323 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,323 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,324 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,324 WARN L675 CHandler]: The function format_address is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,324 WARN L675 CHandler]: The function fseek is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,324 WARN L675 CHandler]: The function fread is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,325 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,325 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,325 WARN L675 CHandler]: The function puts is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,325 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,325 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,326 WARN L675 CHandler]: The function setbuf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,326 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,326 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,326 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,326 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,335 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:25,336 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25 WrapperNode [2023-11-19 07:43:25,336 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:25,338 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:25,338 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:25,338 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:25,347 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,452 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,699 INFO L138 Inliner]: procedures = 692, calls = 1693, calls flagged for inlining = 56, calls inlined = 54, statements flattened = 4647 [2023-11-19 07:43:25,700 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:25,701 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:25,701 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:25,701 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:25,711 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,712 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,755 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,756 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,874 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,941 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,980 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:25,981 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:25,982 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:25,982 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:25,983 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:26,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:26,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:26,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:26,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2023-11-19 07:43:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 07:43:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure open_next_file [2023-11-19 07:43:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure open_next_file [2023-11-19 07:43:26,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 07:43:26,055 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 07:43:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 07:43:26,056 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 07:43:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-19 07:43:26,056 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 07:43:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 07:43:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 07:43:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:26,057 INFO L130 BoogieDeclarations]: Found specification of procedure bb_strtou [2023-11-19 07:43:26,057 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_strtou [2023-11-19 07:43:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2023-11-19 07:43:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-11-19 07:43:26,058 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-19 07:43:26,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-19 07:43:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:43:26,059 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 07:43:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 07:43:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-19 07:43:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:43:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2023-11-19 07:43:26,060 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2023-11-19 07:43:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:43:26,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:43:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-19 07:43:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_std [2023-11-19 07:43:26,061 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_std [2023-11-19 07:43:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 07:43:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure check_and_close [2023-11-19 07:43:26,061 INFO L138 BoogieDeclarations]: Found implementation of procedure check_and_close [2023-11-19 07:43:26,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:43:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~VOID [2023-11-19 07:43:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~VOID [2023-11-19 07:43:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 07:43:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 07:43:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 07:43:26,062 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 07:43:26,062 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2023-11-19 07:43:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 07:43:26,063 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 07:43:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:43:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:43:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure decode_format_string [2023-11-19 07:43:26,063 INFO L138 BoogieDeclarations]: Found implementation of procedure decode_format_string [2023-11-19 07:43:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-19 07:43:26,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:43:26,064 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:43:26,065 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2023-11-19 07:43:26,065 INFO L138 BoogieDeclarations]: Found implementation of procedure fstat [2023-11-19 07:43:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:43:26,066 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:43:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure parse_old_offset [2023-11-19 07:43:26,066 INFO L138 BoogieDeclarations]: Found implementation of procedure parse_old_offset [2023-11-19 07:43:26,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:43:26,067 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-19 07:43:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:43:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-19 07:43:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure get_lcm [2023-11-19 07:43:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure get_lcm [2023-11-19 07:43:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-19 07:43:26,068 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-19 07:43:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2023-11-19 07:43:26,068 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-19 07:43:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_sfx [2023-11-19 07:43:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_sfx [2023-11-19 07:43:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2023-11-19 07:43:26,069 INFO L130 BoogieDeclarations]: Found specification of procedure format_address_paren [2023-11-19 07:43:26,069 INFO L138 BoogieDeclarations]: Found implementation of procedure format_address_paren [2023-11-19 07:43:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtou_range_sfx [2023-11-19 07:43:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtou_range_sfx [2023-11-19 07:43:26,070 INFO L130 BoogieDeclarations]: Found specification of procedure write_block [2023-11-19 07:43:26,070 INFO L138 BoogieDeclarations]: Found implementation of procedure write_block [2023-11-19 07:43:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~real [2023-11-19 07:43:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 07:43:26,071 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 07:43:26,071 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 07:43:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure xasprintf [2023-11-19 07:43:26,072 INFO L138 BoogieDeclarations]: Found implementation of procedure xasprintf [2023-11-19 07:43:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:26,072 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg [2023-11-19 07:43:26,072 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg [2023-11-19 07:43:26,807 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:26,810 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:32,962 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:32,984 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:32,984 INFO L302 CfgBuilder]: Removed 54 assume(true) statements. [2023-11-19 07:43:32,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:32 BoogieIcfgContainer [2023-11-19 07:43:32,997 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:32,999 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:33,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:33,003 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:33,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:21" (1/3) ... [2023-11-19 07:43:33,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5f5fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:33, skipping insertion in model container [2023-11-19 07:43:33,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (2/3) ... [2023-11-19 07:43:33,005 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5f5fdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:33, skipping insertion in model container [2023-11-19 07:43:33,005 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:32" (3/3) ... [2023-11-19 07:43:33,007 INFO L112 eAbstractionObserver]: Analyzing ICFG od-3.i [2023-11-19 07:43:33,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:33,029 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 147 error locations. [2023-11-19 07:43:33,117 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:33,125 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;@44fa8ca5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:33,125 INFO L358 AbstractCegarLoop]: Starting to check reachability of 147 error locations. [2023-11-19 07:43:33,137 INFO L276 IsEmpty]: Start isEmpty. Operand has 1423 states, 1084 states have (on average 1.661439114391144) internal successors, (1801), 1301 states have internal predecessors, (1801), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) [2023-11-19 07:43:33,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:43:33,146 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:33,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:43:33,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:33,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:33,153 INFO L85 PathProgramCache]: Analyzing trace with hash 56490885, now seen corresponding path program 1 times [2023-11-19 07:43:33,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:33,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734820083] [2023-11-19 07:43:33,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:33,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:33,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:34,123 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 07:43:34,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:34,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734820083] [2023-11-19 07:43:34,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734820083] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:34,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:34,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:34,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939489296] [2023-11-19 07:43:34,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:34,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:34,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:34,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:34,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:34,186 INFO L87 Difference]: Start difference. First operand has 1423 states, 1084 states have (on average 1.661439114391144) internal successors, (1801), 1301 states have internal predecessors, (1801), 163 states have call successors, (163), 28 states have call predecessors, (163), 28 states have return successors, (163), 162 states have call predecessors, (163), 163 states have call successors, (163) 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 07:43:34,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:34,478 INFO L93 Difference]: Finished difference Result 2733 states and 4197 transitions. [2023-11-19 07:43:34,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:34,481 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 07:43:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:34,513 INFO L225 Difference]: With dead ends: 2733 [2023-11-19 07:43:34,514 INFO L226 Difference]: Without dead ends: 1261 [2023-11-19 07:43:34,534 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 07:43:34,538 INFO L413 NwaCegarLoop]: 1829 mSDtfsCounter, 1 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3652 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 07:43:34,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3652 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:34,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1261 states. [2023-11-19 07:43:34,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1261 to 1261. [2023-11-19 07:43:34,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1261 states, 1013 states have (on average 1.5330700888450148) internal successors, (1553), 1171 states have internal predecessors, (1553), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1261 states to 1261 states and 1735 transitions. [2023-11-19 07:43:34,671 INFO L78 Accepts]: Start accepts. Automaton has 1261 states and 1735 transitions. Word has length 4 [2023-11-19 07:43:34,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:34,671 INFO L495 AbstractCegarLoop]: Abstraction has 1261 states and 1735 transitions. [2023-11-19 07:43:34,671 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 07:43:34,672 INFO L276 IsEmpty]: Start isEmpty. Operand 1261 states and 1735 transitions. [2023-11-19 07:43:34,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:43:34,672 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:34,672 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:43:34,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:34,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:34,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:34,674 INFO L85 PathProgramCache]: Analyzing trace with hash -705388104, now seen corresponding path program 1 times [2023-11-19 07:43:34,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:34,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288979236] [2023-11-19 07:43:34,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:34,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:35,148 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 07:43:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288979236] [2023-11-19 07:43:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288979236] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932106295] [2023-11-19 07:43:35,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:35,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:35,151 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:35,153 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:35,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:43:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:36,052 INFO L262 TraceCheckSpWp]: Trace formula consists of 1915 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:36,060 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:36,115 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 07:43:36,115 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:36,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932106295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:36,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:36,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:43:36,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33003632] [2023-11-19 07:43:36,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:36,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:36,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:36,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:36,120 INFO L87 Difference]: Start difference. First operand 1261 states and 1735 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 07:43:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:36,233 INFO L93 Difference]: Finished difference Result 1261 states and 1735 transitions. [2023-11-19 07:43:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:36,234 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 07:43:36,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:36,248 INFO L225 Difference]: With dead ends: 1261 [2023-11-19 07:43:36,249 INFO L226 Difference]: Without dead ends: 1260 [2023-11-19 07:43:36,250 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 07:43:36,251 INFO L413 NwaCegarLoop]: 1726 mSDtfsCounter, 5 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 3450 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 07:43:36,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 3450 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:36,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-11-19 07:43:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1260. [2023-11-19 07:43:36,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1260 states, 1013 states have (on average 1.5320829220138203) internal successors, (1552), 1170 states have internal predecessors, (1552), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1260 states to 1260 states and 1734 transitions. [2023-11-19 07:43:36,320 INFO L78 Accepts]: Start accepts. Automaton has 1260 states and 1734 transitions. Word has length 7 [2023-11-19 07:43:36,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:36,321 INFO L495 AbstractCegarLoop]: Abstraction has 1260 states and 1734 transitions. [2023-11-19 07:43:36,321 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 07:43:36,321 INFO L276 IsEmpty]: Start isEmpty. Operand 1260 states and 1734 transitions. [2023-11-19 07:43:36,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:43:36,322 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:36,322 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 07:43:36,357 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:36,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:36,536 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:36,537 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:36,537 INFO L85 PathProgramCache]: Analyzing trace with hash -392192894, now seen corresponding path program 1 times [2023-11-19 07:43:36,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:36,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375955353] [2023-11-19 07:43:36,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:36,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:36,875 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 07:43:36,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:36,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375955353] [2023-11-19 07:43:36,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375955353] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:36,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:36,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315994149] [2023-11-19 07:43:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:36,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:36,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:36,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:36,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:36,878 INFO L87 Difference]: Start difference. First operand 1260 states and 1734 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 07:43:36,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:36,953 INFO L93 Difference]: Finished difference Result 1260 states and 1734 transitions. [2023-11-19 07:43:36,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:36,954 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 07:43:36,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:36,963 INFO L225 Difference]: With dead ends: 1260 [2023-11-19 07:43:36,964 INFO L226 Difference]: Without dead ends: 1259 [2023-11-19 07:43:36,965 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 07:43:36,966 INFO L413 NwaCegarLoop]: 1727 mSDtfsCounter, 0 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3451 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 07:43:36,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3451 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:36,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2023-11-19 07:43:37,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1257. [2023-11-19 07:43:37,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1011 states have (on average 1.5321463897131553) internal successors, (1549), 1167 states have internal predecessors, (1549), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:37,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1731 transitions. [2023-11-19 07:43:37,020 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1731 transitions. Word has length 8 [2023-11-19 07:43:37,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:37,021 INFO L495 AbstractCegarLoop]: Abstraction has 1257 states and 1731 transitions. [2023-11-19 07:43:37,021 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 07:43:37,021 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1731 transitions. [2023-11-19 07:43:37,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:43:37,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:37,022 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:37,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:43:37,023 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:37,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:37,023 INFO L85 PathProgramCache]: Analyzing trace with hash 859301175, now seen corresponding path program 1 times [2023-11-19 07:43:37,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:37,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717448909] [2023-11-19 07:43:37,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:37,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:37,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:43:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:37,364 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 07:43:37,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:37,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717448909] [2023-11-19 07:43:37,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717448909] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424029367] [2023-11-19 07:43:37,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:37,365 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:37,365 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:37,366 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:37,388 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:43:38,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,102 INFO L262 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:43:38,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:38,119 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 07:43:38,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:38,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424029367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:38,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:38,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 07:43:38,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388347118] [2023-11-19 07:43:38,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:38,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:38,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:38,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:38,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:38,122 INFO L87 Difference]: Start difference. First operand 1257 states and 1731 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 07:43:38,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:38,288 INFO L93 Difference]: Finished difference Result 1257 states and 1731 transitions. [2023-11-19 07:43:38,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:38,289 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 07:43:38,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:38,297 INFO L225 Difference]: With dead ends: 1257 [2023-11-19 07:43:38,297 INFO L226 Difference]: Without dead ends: 1255 [2023-11-19 07:43:38,298 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 07:43:38,299 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 857 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 910 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:38,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [910 Valid, 2533 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:43:38,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1255 states. [2023-11-19 07:43:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255. [2023-11-19 07:43:38,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1255 states, 1011 states have (on average 1.530168150346192) internal successors, (1547), 1165 states have internal predecessors, (1547), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1729 transitions. [2023-11-19 07:43:38,352 INFO L78 Accepts]: Start accepts. Automaton has 1255 states and 1729 transitions. Word has length 13 [2023-11-19 07:43:38,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:38,354 INFO L495 AbstractCegarLoop]: Abstraction has 1255 states and 1729 transitions. [2023-11-19 07:43:38,354 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 07:43:38,354 INFO L276 IsEmpty]: Start isEmpty. Operand 1255 states and 1729 transitions. [2023-11-19 07:43:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:43:38,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:38,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:38,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:38,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 07:43:38,576 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:38,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:38,577 INFO L85 PathProgramCache]: Analyzing trace with hash 868534508, now seen corresponding path program 1 times [2023-11-19 07:43:38,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:38,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633119285] [2023-11-19 07:43:38,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:38,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:38,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:38,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:43:38,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:39,008 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 07:43:39,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633119285] [2023-11-19 07:43:39,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633119285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:39,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348142259] [2023-11-19 07:43:39,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:39,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:39,010 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:39,013 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:39,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:43:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:39,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:39,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:39,790 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 07:43:39,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:39,831 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 07:43:39,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348142259] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:39,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:39,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:43:39,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068569442] [2023-11-19 07:43:39,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:39,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:43:39,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:43:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:43:39,834 INFO L87 Difference]: Start difference. First operand 1255 states and 1729 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 07:43:39,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:39,994 INFO L93 Difference]: Finished difference Result 2513 states and 3463 transitions. [2023-11-19 07:43:39,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:39,995 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 07:43:39,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:40,006 INFO L225 Difference]: With dead ends: 2513 [2023-11-19 07:43:40,006 INFO L226 Difference]: Without dead ends: 1264 [2023-11-19 07:43:40,013 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 07:43:40,014 INFO L413 NwaCegarLoop]: 1725 mSDtfsCounter, 4 mSDsluCounter, 5166 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6891 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:40,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6891 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:40,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2023-11-19 07:43:40,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 1264. [2023-11-19 07:43:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1264 states, 1020 states have (on average 1.5254901960784313) internal successors, (1556), 1174 states have internal predecessors, (1556), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:40,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1264 states to 1264 states and 1738 transitions. [2023-11-19 07:43:40,075 INFO L78 Accepts]: Start accepts. Automaton has 1264 states and 1738 transitions. Word has length 14 [2023-11-19 07:43:40,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:40,076 INFO L495 AbstractCegarLoop]: Abstraction has 1264 states and 1738 transitions. [2023-11-19 07:43:40,076 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 07:43:40,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1264 states and 1738 transitions. [2023-11-19 07:43:40,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:43:40,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:40,077 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:43:40,108 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:40,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:40,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:40,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:40,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1211387841, now seen corresponding path program 2 times [2023-11-19 07:43:40,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:40,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480534659] [2023-11-19 07:43:40,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:40,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:40,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:40,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:43:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:40,908 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 07:43:40,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:40,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480534659] [2023-11-19 07:43:40,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480534659] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:40,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224149857] [2023-11-19 07:43:40,909 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:43:40,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:40,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:40,910 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:40,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:43:41,623 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:43:41,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:43:41,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 1910 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:43:41,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:41,705 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 07:43:41,706 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:41,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224149857] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:41,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:41,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 07:43:41,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658139995] [2023-11-19 07:43:41,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:41,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:41,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:41,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:43:41,709 INFO L87 Difference]: Start difference. First operand 1264 states and 1738 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 07:43:42,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:42,166 INFO L93 Difference]: Finished difference Result 1264 states and 1738 transitions. [2023-11-19 07:43:42,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:43:42,167 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 07:43:42,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:42,176 INFO L225 Difference]: With dead ends: 1264 [2023-11-19 07:43:42,177 INFO L226 Difference]: Without dead ends: 1262 [2023-11-19 07:43:42,178 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 07:43:42,179 INFO L413 NwaCegarLoop]: 1710 mSDtfsCounter, 856 mSDsluCounter, 4213 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 5923 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:42,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 5923 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 07:43:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2023-11-19 07:43:42,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 1262. [2023-11-19 07:43:42,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1020 states have (on average 1.5235294117647058) internal successors, (1554), 1172 states have internal predecessors, (1554), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1736 transitions. [2023-11-19 07:43:42,244 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1736 transitions. Word has length 23 [2023-11-19 07:43:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:42,244 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1736 transitions. [2023-11-19 07:43:42,245 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 07:43:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1736 transitions. [2023-11-19 07:43:42,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:43:42,246 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:42,246 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 07:43:42,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:42,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:43:42,464 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:42,465 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:42,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1721780815, now seen corresponding path program 1 times [2023-11-19 07:43:42,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:42,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065793557] [2023-11-19 07:43:42,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:42,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:43:42,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:42,988 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 07:43:42,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:42,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065793557] [2023-11-19 07:43:42,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065793557] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:42,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:42,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:42,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322909211] [2023-11-19 07:43:42,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:42,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:42,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:42,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:42,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:42,992 INFO L87 Difference]: Start difference. First operand 1262 states and 1736 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 07:43:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:43,101 INFO L93 Difference]: Finished difference Result 2506 states and 3455 transitions. [2023-11-19 07:43:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:43,101 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 07:43:43,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:43,112 INFO L225 Difference]: With dead ends: 2506 [2023-11-19 07:43:43,112 INFO L226 Difference]: Without dead ends: 1265 [2023-11-19 07:43:43,118 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 07:43:43,119 INFO L413 NwaCegarLoop]: 1723 mSDtfsCounter, 1 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3440 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 07:43:43,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3440 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:43,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1265 states. [2023-11-19 07:43:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1265 to 1265. [2023-11-19 07:43:43,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1265 states, 1023 states have (on average 1.5219941348973607) internal successors, (1557), 1175 states have internal predecessors, (1557), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:43,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1265 states to 1265 states and 1739 transitions. [2023-11-19 07:43:43,185 INFO L78 Accepts]: Start accepts. Automaton has 1265 states and 1739 transitions. Word has length 28 [2023-11-19 07:43:43,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:43,185 INFO L495 AbstractCegarLoop]: Abstraction has 1265 states and 1739 transitions. [2023-11-19 07:43:43,185 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 07:43:43,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1265 states and 1739 transitions. [2023-11-19 07:43:43,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 07:43:43,187 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:43,188 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 07:43:43,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:43:43,188 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:43,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:43,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1070185805, now seen corresponding path program 1 times [2023-11-19 07:43:43,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:43,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338275365] [2023-11-19 07:43:43,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:43,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:43,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:43:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:43,638 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 07:43:43,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:43,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338275365] [2023-11-19 07:43:43,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338275365] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:43,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:43,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:43,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102676960] [2023-11-19 07:43:43,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:43,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:43,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:43,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:43,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:43,641 INFO L87 Difference]: Start difference. First operand 1265 states and 1739 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 07:43:43,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:43,733 INFO L93 Difference]: Finished difference Result 1524 states and 2124 transitions. [2023-11-19 07:43:43,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:43,733 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 07:43:43,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:43,743 INFO L225 Difference]: With dead ends: 1524 [2023-11-19 07:43:43,743 INFO L226 Difference]: Without dead ends: 1522 [2023-11-19 07:43:43,744 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 07:43:43,745 INFO L413 NwaCegarLoop]: 1718 mSDtfsCounter, 361 mSDsluCounter, 1710 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 3428 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 07:43:43,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [369 Valid, 3428 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:43,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1522 states. [2023-11-19 07:43:43,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1522 to 1269. [2023-11-19 07:43:43,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1269 states, 1027 states have (on average 1.5209347614410906) internal successors, (1562), 1179 states have internal predecessors, (1562), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:43,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1269 states to 1269 states and 1744 transitions. [2023-11-19 07:43:43,801 INFO L78 Accepts]: Start accepts. Automaton has 1269 states and 1744 transitions. Word has length 30 [2023-11-19 07:43:43,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:43,802 INFO L495 AbstractCegarLoop]: Abstraction has 1269 states and 1744 transitions. [2023-11-19 07:43:43,802 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 07:43:43,802 INFO L276 IsEmpty]: Start isEmpty. Operand 1269 states and 1744 transitions. [2023-11-19 07:43:43,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:43:43,803 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:43,803 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 07:43:43,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:43:43,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:43,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1224027118, now seen corresponding path program 1 times [2023-11-19 07:43:43,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:43,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469208838] [2023-11-19 07:43:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:43,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:44,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:43:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:44,226 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 07:43:44,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469208838] [2023-11-19 07:43:44,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469208838] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:44,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015561273] [2023-11-19 07:43:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:44,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:44,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:44,233 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:44,256 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:43:45,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:45,120 INFO L262 TraceCheckSpWp]: Trace formula consists of 2146 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:43:45,124 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:45,196 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 07:43:45,196 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:45,296 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 07:43:45,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1015561273] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:45,296 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:45,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:43:45,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061319585] [2023-11-19 07:43:45,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:45,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:43:45,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:45,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:43:45,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:43:45,299 INFO L87 Difference]: Start difference. First operand 1269 states and 1744 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 07:43:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:45,529 INFO L93 Difference]: Finished difference Result 2540 states and 3496 transitions. [2023-11-19 07:43:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:43:45,529 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 07:43:45,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:45,538 INFO L225 Difference]: With dead ends: 2540 [2023-11-19 07:43:45,538 INFO L226 Difference]: Without dead ends: 1286 [2023-11-19 07:43:45,544 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 07:43:45,545 INFO L413 NwaCegarLoop]: 1717 mSDtfsCounter, 7 mSDsluCounter, 6856 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 8573 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:45,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 8573 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:43:45,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1286 states. [2023-11-19 07:43:45,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1286 to 1286. [2023-11-19 07:43:45,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1286 states, 1045 states have (on average 1.5110047846889951) internal successors, (1579), 1196 states have internal predecessors, (1579), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1286 states to 1286 states and 1761 transitions. [2023-11-19 07:43:45,618 INFO L78 Accepts]: Start accepts. Automaton has 1286 states and 1761 transitions. Word has length 31 [2023-11-19 07:43:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:45,619 INFO L495 AbstractCegarLoop]: Abstraction has 1286 states and 1761 transitions. [2023-11-19 07:43:45,619 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 07:43:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 1286 states and 1761 transitions. [2023-11-19 07:43:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:43:45,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:45,621 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 07:43:45,651 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:45,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:45,836 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:45,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:45,837 INFO L85 PathProgramCache]: Analyzing trace with hash -363903027, now seen corresponding path program 1 times [2023-11-19 07:43:45,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:45,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554192506] [2023-11-19 07:43:45,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:45,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:45,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:43:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:46,241 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 07:43:46,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:46,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554192506] [2023-11-19 07:43:46,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554192506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:46,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:46,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:46,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156499657] [2023-11-19 07:43:46,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:46,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:46,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:46,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:46,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:46,245 INFO L87 Difference]: Start difference. First operand 1286 states and 1761 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 07:43:46,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:46,471 INFO L93 Difference]: Finished difference Result 1300 states and 1777 transitions. [2023-11-19 07:43:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:46,472 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 07:43:46,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:46,481 INFO L225 Difference]: With dead ends: 1300 [2023-11-19 07:43:46,481 INFO L226 Difference]: Without dead ends: 1298 [2023-11-19 07:43:46,482 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 07:43:46,483 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 3 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:46,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3435 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:43:46,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1298 states. [2023-11-19 07:43:46,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1298 to 1296. [2023-11-19 07:43:46,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1296 states, 1055 states have (on average 1.509004739336493) internal successors, (1592), 1206 states have internal predecessors, (1592), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:46,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1296 states to 1296 states and 1774 transitions. [2023-11-19 07:43:46,550 INFO L78 Accepts]: Start accepts. Automaton has 1296 states and 1774 transitions. Word has length 50 [2023-11-19 07:43:46,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:46,551 INFO L495 AbstractCegarLoop]: Abstraction has 1296 states and 1774 transitions. [2023-11-19 07:43:46,552 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 07:43:46,552 INFO L276 IsEmpty]: Start isEmpty. Operand 1296 states and 1774 transitions. [2023-11-19 07:43:46,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:43:46,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:46,558 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 07:43:46,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:43:46,558 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:46,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:46,559 INFO L85 PathProgramCache]: Analyzing trace with hash -363901298, now seen corresponding path program 1 times [2023-11-19 07:43:46,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:46,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321752295] [2023-11-19 07:43:46,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:46,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:46,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:46,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:43:46,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:46,925 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 07:43:46,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:46,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321752295] [2023-11-19 07:43:46,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321752295] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:46,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:46,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:43:46,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817948305] [2023-11-19 07:43:46,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:46,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:46,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:46,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:46,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:46,930 INFO L87 Difference]: Start difference. First operand 1296 states and 1774 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 07:43:46,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:46,996 INFO L93 Difference]: Finished difference Result 1296 states and 1774 transitions. [2023-11-19 07:43:46,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:46,997 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 07:43:46,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:47,006 INFO L225 Difference]: With dead ends: 1296 [2023-11-19 07:43:47,006 INFO L226 Difference]: Without dead ends: 1295 [2023-11-19 07:43:47,007 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 07:43:47,008 INFO L413 NwaCegarLoop]: 1721 mSDtfsCounter, 0 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3438 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 07:43:47,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3438 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:47,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1295 states. [2023-11-19 07:43:47,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1295 to 1291. [2023-11-19 07:43:47,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1291 states, 1051 states have (on average 1.5090390104662226) internal successors, (1586), 1201 states have internal predecessors, (1586), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1291 states to 1291 states and 1768 transitions. [2023-11-19 07:43:47,064 INFO L78 Accepts]: Start accepts. Automaton has 1291 states and 1768 transitions. Word has length 50 [2023-11-19 07:43:47,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:47,065 INFO L495 AbstractCegarLoop]: Abstraction has 1291 states and 1768 transitions. [2023-11-19 07:43:47,065 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 07:43:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1291 states and 1768 transitions. [2023-11-19 07:43:47,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-19 07:43:47,066 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:47,066 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 07:43:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 07:43:47,067 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:47,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash -849850836, now seen corresponding path program 1 times [2023-11-19 07:43:47,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:47,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948525829] [2023-11-19 07:43:47,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:47,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:43:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:47,546 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 07:43:47,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:47,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948525829] [2023-11-19 07:43:47,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1948525829] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:47,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342415698] [2023-11-19 07:43:47,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:47,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:47,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:47,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:47,552 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:43:48,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:48,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 2477 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:48,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:48,537 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 07:43:48,537 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:48,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342415698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:48,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:48,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:43:48,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196335944] [2023-11-19 07:43:48,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:48,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:48,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:48,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:43:48,541 INFO L87 Difference]: Start difference. First operand 1291 states and 1768 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 07:43:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:48,803 INFO L93 Difference]: Finished difference Result 1548 states and 2151 transitions. [2023-11-19 07:43:48,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:48,804 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 07:43:48,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:48,814 INFO L225 Difference]: With dead ends: 1548 [2023-11-19 07:43:48,815 INFO L226 Difference]: Without dead ends: 1547 [2023-11-19 07:43:48,816 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 07:43:48,817 INFO L413 NwaCegarLoop]: 2089 mSDtfsCounter, 723 mSDsluCounter, 1713 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 739 SdHoareTripleChecker+Valid, 3802 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:48,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [739 Valid, 3802 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:43:48,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1547 states. [2023-11-19 07:43:48,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1547 to 1290. [2023-11-19 07:43:48,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1290 states, 1051 states have (on average 1.5080875356803045) internal successors, (1585), 1200 states have internal predecessors, (1585), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:48,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1767 transitions. [2023-11-19 07:43:48,876 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1767 transitions. Word has length 52 [2023-11-19 07:43:48,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:48,878 INFO L495 AbstractCegarLoop]: Abstraction has 1290 states and 1767 transitions. [2023-11-19 07:43:48,878 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 07:43:48,878 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1767 transitions. [2023-11-19 07:43:48,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-19 07:43:48,880 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:48,880 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 07:43:48,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-19 07:43:49,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-19 07:43:49,107 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:49,107 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:49,107 INFO L85 PathProgramCache]: Analyzing trace with hash -575570229, now seen corresponding path program 1 times [2023-11-19 07:43:49,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:49,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196490568] [2023-11-19 07:43:49,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:49,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:49,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:43:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:49,652 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 07:43:49,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:49,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196490568] [2023-11-19 07:43:49,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196490568] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:49,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691018028] [2023-11-19 07:43:49,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:49,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:49,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:49,654 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:49,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:43:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:50,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 2478 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:50,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:50,645 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 07:43:50,645 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:50,684 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 07:43:50,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691018028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:50,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:50,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:43:50,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559931925] [2023-11-19 07:43:50,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:50,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:43:50,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:50,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:43:50,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:43:50,687 INFO L87 Difference]: Start difference. First operand 1290 states and 1767 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 07:43:50,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:50,984 INFO L93 Difference]: Finished difference Result 2315 states and 3297 transitions. [2023-11-19 07:43:50,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:50,984 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 07:43:51,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:51,033 INFO L225 Difference]: With dead ends: 2315 [2023-11-19 07:43:51,033 INFO L226 Difference]: Without dead ends: 2314 [2023-11-19 07:43:51,034 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 07:43:51,035 INFO L413 NwaCegarLoop]: 1715 mSDtfsCounter, 1828 mSDsluCounter, 5149 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1860 SdHoareTripleChecker+Valid, 6864 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:51,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1860 Valid, 6864 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:43:51,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2314 states. [2023-11-19 07:43:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2314 to 1302. [2023-11-19 07:43:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 1063 states have (on average 1.5051740357478833) internal successors, (1600), 1212 states have internal predecessors, (1600), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:51,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 1782 transitions. [2023-11-19 07:43:51,115 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 1782 transitions. Word has length 53 [2023-11-19 07:43:51,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:51,115 INFO L495 AbstractCegarLoop]: Abstraction has 1302 states and 1782 transitions. [2023-11-19 07:43:51,116 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 07:43:51,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 1782 transitions. [2023-11-19 07:43:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:43:51,117 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:51,117 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 07:43:51,152 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:51,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:43:51,345 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:51,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:51,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1794070922, now seen corresponding path program 1 times [2023-11-19 07:43:51,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:51,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057244360] [2023-11-19 07:43:51,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:51,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:51,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:43:51,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:51,916 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 07:43:51,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:51,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057244360] [2023-11-19 07:43:51,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057244360] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:51,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069440827] [2023-11-19 07:43:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:51,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:51,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:51,918 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:51,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:43:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:52,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 2353 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:43:52,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:52,901 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 07:43:52,901 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:52,932 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 07:43:52,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069440827] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:52,933 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:52,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:43:52,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596141762] [2023-11-19 07:43:52,933 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:52,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:43:52,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:52,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:43:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:43:52,935 INFO L87 Difference]: Start difference. First operand 1302 states and 1782 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 07:43:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:53,080 INFO L93 Difference]: Finished difference Result 2578 states and 3540 transitions. [2023-11-19 07:43:53,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:43:53,081 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 07:43:53,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:53,091 INFO L225 Difference]: With dead ends: 2578 [2023-11-19 07:43:53,091 INFO L226 Difference]: Without dead ends: 1320 [2023-11-19 07:43:53,098 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 07:43:53,099 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 4 mSDsluCounter, 3432 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5152 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:53,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 5152 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:43:53,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1320 states. [2023-11-19 07:43:53,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1320 to 1320. [2023-11-19 07:43:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1320 states, 1081 states have (on average 1.4967622571692878) internal successors, (1618), 1230 states have internal predecessors, (1618), 100 states have call successors, (100), 24 states have call predecessors, (100), 23 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82) [2023-11-19 07:43:53,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1320 states to 1320 states and 1800 transitions. [2023-11-19 07:43:53,157 INFO L78 Accepts]: Start accepts. Automaton has 1320 states and 1800 transitions. Word has length 58 [2023-11-19 07:43:53,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:53,157 INFO L495 AbstractCegarLoop]: Abstraction has 1320 states and 1800 transitions. [2023-11-19 07:43:53,157 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 07:43:53,158 INFO L276 IsEmpty]: Start isEmpty. Operand 1320 states and 1800 transitions. [2023-11-19 07:43:53,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-19 07:43:53,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:53,159 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 07:43:53,189 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:43:53,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cf46602f-7a9f-448b-8856-2068a64ec8cb/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:43:53,384 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:53,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash -852925851, now seen corresponding path program 1 times [2023-11-19 07:43:53,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:53,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671281367] [2023-11-19 07:43:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:53,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:53,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:43:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:53,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:43:53,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:53,988 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 07:43:53,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:53,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671281367] [2023-11-19 07:43:53,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671281367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:53,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:53,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:53,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182769792] [2023-11-19 07:43:53,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:53,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:53,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:53,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:53,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:53,991 INFO L87 Difference]: Start difference. First operand 1320 states and 1800 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 07:43:57,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:43:59,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:43:59,408 INFO L93 Difference]: Finished difference Result 2894 states and 4003 transitions. [2023-11-19 07:43:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:43:59,409 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 07:43:59,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:43:59,423 INFO L225 Difference]: With dead ends: 2894 [2023-11-19 07:43:59,423 INFO L226 Difference]: Without dead ends: 1678 [2023-11-19 07:43:59,431 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 07:43:59,431 INFO L413 NwaCegarLoop]: 1673 mSDtfsCounter, 545 mSDsluCounter, 2768 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 4441 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:43:59,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [550 Valid, 4441 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-19 07:43:59,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1678 states. [2023-11-19 07:43:59,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1678 to 1361. [2023-11-19 07:43:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1121 states have (on average 1.4924174843889384) internal successors, (1673), 1270 states have internal predecessors, (1673), 101 states have call successors, (101), 24 states have call predecessors, (101), 23 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-19 07:43:59,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1857 transitions. [2023-11-19 07:43:59,519 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1857 transitions. Word has length 62 [2023-11-19 07:43:59,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:43:59,520 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1857 transitions. [2023-11-19 07:43:59,520 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 07:43:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1857 transitions. [2023-11-19 07:43:59,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-19 07:43:59,521 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:43:59,521 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 07:43:59,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-19 07:43:59,522 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:43:59,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:59,522 INFO L85 PathProgramCache]: Analyzing trace with hash 677073258, now seen corresponding path program 1 times [2023-11-19 07:43:59,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:59,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678477879] [2023-11-19 07:43:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:59,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:59,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:59,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:43:59,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:59,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-19 07:43:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:59,989 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 07:43:59,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:59,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678477879] [2023-11-19 07:43:59,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678477879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:59,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:59,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:43:59,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253867297] [2023-11-19 07:43:59,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:59,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:43:59,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:43:59,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:43:59,994 INFO L87 Difference]: Start difference. First operand 1361 states and 1857 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 07:44:03,226 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-19 07:44:05,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:44:05,397 INFO L93 Difference]: Finished difference Result 1623 states and 2233 transitions. [2023-11-19 07:44:05,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:44:05,398 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 07:44:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:44:05,408 INFO L225 Difference]: With dead ends: 1623 [2023-11-19 07:44:05,408 INFO L226 Difference]: Without dead ends: 1621 [2023-11-19 07:44:05,409 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 07:44:05,410 INFO L413 NwaCegarLoop]: 1655 mSDtfsCounter, 423 mSDsluCounter, 2823 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 4478 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-19 07:44:05,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [423 Valid, 4478 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-19 07:44:05,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2023-11-19 07:44:05,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1361. [2023-11-19 07:44:05,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1121 states have (on average 1.4906333630686888) internal successors, (1671), 1270 states have internal predecessors, (1671), 101 states have call successors, (101), 24 states have call predecessors, (101), 23 states have return successors, (83), 82 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-19 07:44:05,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1855 transitions. [2023-11-19 07:44:05,473 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1855 transitions. Word has length 64 [2023-11-19 07:44:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:44:05,473 INFO L495 AbstractCegarLoop]: Abstraction has 1361 states and 1855 transitions. [2023-11-19 07:44:05,474 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 07:44:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1855 transitions. [2023-11-19 07:44:05,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-19 07:44:05,475 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:44:05,475 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 07:44:05,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-19 07:44:05,475 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [write_blockErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, write_blockErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 144 more)] === [2023-11-19 07:44:05,476 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:44:05,476 INFO L85 PathProgramCache]: Analyzing trace with hash 36759776, now seen corresponding path program 2 times [2023-11-19 07:44:05,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:44:05,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077691856] [2023-11-19 07:44:05,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:44:05,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:44:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat