./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/touch-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/touch-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya --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 92be14a67e86afbc4131def98aa0a003182d56e7632aa27a6368c84fc66aa202 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-28 20:37:51,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-28 20:37:51,538 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-28 20:37:51,542 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-28 20:37:51,543 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-28 20:37:51,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-28 20:37:51,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-28 20:37:51,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-28 20:37:51,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-28 20:37:51,567 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-28 20:37:51,568 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-28 20:37:51,568 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-28 20:37:51,569 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-28 20:37:51,570 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-28 20:37:51,570 INFO L153 SettingsManager]: * Use SBE=true [2023-11-28 20:37:51,571 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-28 20:37:51,571 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-28 20:37:51,572 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-28 20:37:51,572 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-28 20:37:51,573 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-28 20:37:51,573 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-28 20:37:51,574 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-28 20:37:51,574 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-28 20:37:51,575 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-28 20:37:51,575 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-28 20:37:51,575 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-28 20:37:51,576 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-28 20:37:51,576 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-28 20:37:51,577 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-28 20:37:51,577 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-28 20:37:51,578 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:37:51,578 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-28 20:37:51,578 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-28 20:37:51,579 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-28 20:37:51,579 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-28 20:37:51,579 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-28 20:37:51,579 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-28 20:37:51,579 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-28 20:37:51,579 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-28 20:37:51,580 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-28 20:37:51,580 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-28 20:37:51,580 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_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92be14a67e86afbc4131def98aa0a003182d56e7632aa27a6368c84fc66aa202 [2023-11-28 20:37:51,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-28 20:37:51,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-28 20:37:51,826 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-28 20:37:51,827 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-28 20:37:51,827 INFO L274 PluginConnector]: CDTParser initialized [2023-11-28 20:37:51,829 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/busybox-1.22.0/touch-1.i [2023-11-28 20:37:54,652 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-28 20:37:55,045 INFO L384 CDTParser]: Found 1 translation units. [2023-11-28 20:37:55,045 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/sv-benchmarks/c/busybox-1.22.0/touch-1.i [2023-11-28 20:37:55,082 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/data/2c97fb409/5e2b3413ec6e415cb8f31e287012a559/FLAG86cbc2fc8 [2023-11-28 20:37:55,099 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/data/2c97fb409/5e2b3413ec6e415cb8f31e287012a559 [2023-11-28 20:37:55,102 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-28 20:37:55,103 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-28 20:37:55,105 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-28 20:37:55,105 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-28 20:37:55,111 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-28 20:37:55,112 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:37:55" (1/1) ... [2023-11-28 20:37:55,113 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31fde2bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:55, skipping insertion in model container [2023-11-28 20:37:55,114 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:37:55" (1/1) ... [2023-11-28 20:37:55,229 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-28 20:37:56,927 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:37:56,960 INFO L202 MainTranslator]: Completed pre-run [2023-11-28 20:37:57,181 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-28 20:37:57,367 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,367 WARN L675 CHandler]: The function localtime is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,367 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,368 WARN L675 CHandler]: The function mktime is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,368 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,368 WARN L675 CHandler]: The function strtoll is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,368 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,368 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,368 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-28 20:37:57,375 INFO L206 MainTranslator]: Completed translation [2023-11-28 20:37:57,375 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57 WrapperNode [2023-11-28 20:37:57,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-28 20:37:57,376 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-28 20:37:57,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-28 20:37:57,377 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-28 20:37:57,382 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,442 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,547 INFO L138 Inliner]: procedures = 669, calls = 747, calls flagged for inlining = 38, calls inlined = 37, statements flattened = 2758 [2023-11-28 20:37:57,548 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-28 20:37:57,548 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-28 20:37:57,549 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-28 20:37:57,549 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-28 20:37:57,561 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,561 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,581 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,593 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-28 20:37:57,593 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,594 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,656 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,672 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,691 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,703 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,727 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-28 20:37:57,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-28 20:37:57,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-28 20:37:57,729 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-28 20:37:57,729 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (1/1) ... [2023-11-28 20:37:57,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-28 20:37:57,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:37:57,759 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-28 20:37:57,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-28 20:37:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-28 20:37:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure localtime [2023-11-28 20:37:57,796 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-28 20:37:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-28 20:37:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure ret_ERANGE [2023-11-28 20:37:57,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ret_ERANGE [2023-11-28 20:37:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-28 20:37:57,797 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-28 20:37:57,798 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-28 20:37:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-28 20:37:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-28 20:37:57,798 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-11-28 20:37:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure mktime [2023-11-28 20:37:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-28 20:37:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-28 20:37:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-28 20:37:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-28 20:37:57,799 INFO L130 BoogieDeclarations]: Found specification of procedure utimes [2023-11-28 20:37:57,799 INFO L138 BoogieDeclarations]: Found implementation of procedure utimes [2023-11-28 20:37:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-28 20:37:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-28 20:37:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-28 20:37:57,800 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-28 20:37:57,800 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-28 20:37:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-28 20:37:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-28 20:37:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-28 20:37:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-28 20:37:57,801 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-28 20:37:57,801 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-28 20:37:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-28 20:37:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-28 20:37:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-28 20:37:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-28 20:37:57,802 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-28 20:37:57,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-28 20:37:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-28 20:37:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-28 20:37:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-28 20:37:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure bb_show_usage [2023-11-28 20:37:57,803 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_show_usage [2023-11-28 20:37:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure bb_ascii_isalnum [2023-11-28 20:37:57,803 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_ascii_isalnum [2023-11-28 20:37:57,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-28 20:37:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-28 20:37:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-28 20:37:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-28 20:37:57,804 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-28 20:37:57,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-28 20:37:58,311 INFO L241 CfgBuilder]: Building ICFG [2023-11-28 20:37:58,314 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-28 20:38:01,447 INFO L282 CfgBuilder]: Performing block encoding [2023-11-28 20:38:01,539 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-28 20:38:01,540 INFO L309 CfgBuilder]: Removed 27 assume(true) statements. [2023-11-28 20:38:01,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:01 BoogieIcfgContainer [2023-11-28 20:38:01,541 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-28 20:38:01,544 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-28 20:38:01,544 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-28 20:38:01,548 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-28 20:38:01,548 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:37:55" (1/3) ... [2023-11-28 20:38:01,548 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294e72fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:38:01, skipping insertion in model container [2023-11-28 20:38:01,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:37:57" (2/3) ... [2023-11-28 20:38:01,549 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294e72fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:38:01, skipping insertion in model container [2023-11-28 20:38:01,549 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:38:01" (3/3) ... [2023-11-28 20:38:01,550 INFO L112 eAbstractionObserver]: Analyzing ICFG touch-1.i [2023-11-28 20:38:01,571 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-28 20:38:01,572 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 96 error locations. [2023-11-28 20:38:01,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-28 20:38:01,651 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;@22135c3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-28 20:38:01,651 INFO L358 AbstractCegarLoop]: Starting to check reachability of 96 error locations. [2023-11-28 20:38:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 711 states, 545 states have (on average 1.7045871559633028) internal successors, (929), 643 states have internal predecessors, (929), 57 states have call successors, (57), 12 states have call predecessors, (57), 12 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2023-11-28 20:38:01,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-28 20:38:01,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:01,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-28 20:38:01,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:01,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:01,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2240593, now seen corresponding path program 1 times [2023-11-28 20:38:01,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:01,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20597308] [2023-11-28 20:38:01,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:01,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:02,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:02,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20597308] [2023-11-28 20:38:02,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20597308] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:02,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:02,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-28 20:38:02,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925828990] [2023-11-28 20:38:02,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:02,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:38:02,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:02,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:38:02,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:02,176 INFO L87 Difference]: Start difference. First operand has 711 states, 545 states have (on average 1.7045871559633028) internal successors, (929), 643 states have internal predecessors, (929), 57 states have call successors, (57), 12 states have call predecessors, (57), 12 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-28 20:38:02,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:02,418 INFO L93 Difference]: Finished difference Result 1405 states and 2112 transitions. [2023-11-28 20:38:02,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:38:02,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2023-11-28 20:38:02,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:02,438 INFO L225 Difference]: With dead ends: 1405 [2023-11-28 20:38:02,438 INFO L226 Difference]: Without dead ends: 694 [2023-11-28 20:38:02,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:02,450 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 1 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:02,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1882 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:02,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-11-28 20:38:02,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 694. [2023-11-28 20:38:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 694 states, 533 states have (on average 1.6435272045028142) internal successors, (876), 638 states have internal predecessors, (876), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:02,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 694 states to 694 states and 978 transitions. [2023-11-28 20:38:02,540 INFO L78 Accepts]: Start accepts. Automaton has 694 states and 978 transitions. Word has length 3 [2023-11-28 20:38:02,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:02,540 INFO L495 AbstractCegarLoop]: Abstraction has 694 states and 978 transitions. [2023-11-28 20:38:02,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2023-11-28 20:38:02,541 INFO L276 IsEmpty]: Start isEmpty. Operand 694 states and 978 transitions. [2023-11-28 20:38:02,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-28 20:38:02,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:02,541 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-28 20:38:02,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-28 20:38:02,542 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:02,542 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:02,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1969562707, now seen corresponding path program 1 times [2023-11-28 20:38:02,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:02,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33450403] [2023-11-28 20:38:02,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:02,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:02,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:02,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33450403] [2023-11-28 20:38:02,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33450403] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:02,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844563180] [2023-11-28 20:38:02,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:02,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:02,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:02,756 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:02,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-28 20:38:03,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:03,097 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:38:03,102 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:03,144 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:03,144 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1844563180] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:03,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-28 20:38:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289026230] [2023-11-28 20:38:03,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:03,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:03,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:03,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:03,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:03,148 INFO L87 Difference]: Start difference. First operand 694 states and 978 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-28 20:38:03,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:03,362 INFO L93 Difference]: Finished difference Result 694 states and 978 transitions. [2023-11-28 20:38:03,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:03,363 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2023-11-28 20:38:03,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:03,368 INFO L225 Difference]: With dead ends: 694 [2023-11-28 20:38:03,369 INFO L226 Difference]: Without dead ends: 693 [2023-11-28 20:38:03,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:03,371 INFO L413 NwaCegarLoop]: 937 mSDtfsCounter, 3 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:03,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2809 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:38:03,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2023-11-28 20:38:03,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 693. [2023-11-28 20:38:03,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 533 states have (on average 1.6416510318949344) internal successors, (875), 637 states have internal predecessors, (875), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:03,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 977 transitions. [2023-11-28 20:38:03,403 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 977 transitions. Word has length 6 [2023-11-28 20:38:03,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:03,403 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 977 transitions. [2023-11-28 20:38:03,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2023-11-28 20:38:03,404 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 977 transitions. [2023-11-28 20:38:03,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-28 20:38:03,404 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:03,404 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-28 20:38:03,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-28 20:38:03,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:03,605 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:03,606 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:03,606 INFO L85 PathProgramCache]: Analyzing trace with hash -926901362, now seen corresponding path program 1 times [2023-11-28 20:38:03,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:03,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076067274] [2023-11-28 20:38:03,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:03,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:38:03,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:03,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076067274] [2023-11-28 20:38:03,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076067274] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:03,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:03,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:38:03,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090593033] [2023-11-28 20:38:03,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:03,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:38:03,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:03,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:38:03,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:03,757 INFO L87 Difference]: Start difference. First operand 693 states and 977 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-28 20:38:03,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:03,915 INFO L93 Difference]: Finished difference Result 693 states and 977 transitions. [2023-11-28 20:38:03,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:38:03,916 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2023-11-28 20:38:03,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:03,921 INFO L225 Difference]: With dead ends: 693 [2023-11-28 20:38:03,922 INFO L226 Difference]: Without dead ends: 692 [2023-11-28 20:38:03,922 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 [2023-11-28 20:38:03,924 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 0 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1874 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:03,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1874 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2023-11-28 20:38:03,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 690. [2023-11-28 20:38:03,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 531 states have (on average 1.6421845574387948) internal successors, (872), 634 states have internal predecessors, (872), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:03,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 974 transitions. [2023-11-28 20:38:03,956 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 974 transitions. Word has length 7 [2023-11-28 20:38:03,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:03,957 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 974 transitions. [2023-11-28 20:38:03,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2023-11-28 20:38:03,957 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 974 transitions. [2023-11-28 20:38:03,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-28 20:38:03,958 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:03,958 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:03,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-28 20:38:03,958 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:03,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:03,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1989868254, now seen corresponding path program 1 times [2023-11-28 20:38:03,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:03,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313325998] [2023-11-28 20:38:03,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:03,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:04,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:04,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:04,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:04,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:04,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313325998] [2023-11-28 20:38:04,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313325998] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:04,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818936802] [2023-11-28 20:38:04,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:04,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:04,103 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:04,104 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:04,106 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-28 20:38:04,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:04,440 INFO L262 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-28 20:38:04,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:04,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-28 20:38:04,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:04,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818936802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:04,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:04,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-28 20:38:04,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569239598] [2023-11-28 20:38:04,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:04,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:38:04,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:04,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:38:04,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:04,459 INFO L87 Difference]: Start difference. First operand 690 states and 974 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-28 20:38:04,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:04,615 INFO L93 Difference]: Finished difference Result 690 states and 974 transitions. [2023-11-28 20:38:04,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:38:04,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-28 20:38:04,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:04,622 INFO L225 Difference]: With dead ends: 690 [2023-11-28 20:38:04,622 INFO L226 Difference]: Without dead ends: 688 [2023-11-28 20:38:04,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:04,624 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 691 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1159 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:04,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1159 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:04,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2023-11-28 20:38:04,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 688. [2023-11-28 20:38:04,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 531 states have (on average 1.6384180790960452) internal successors, (870), 632 states have internal predecessors, (870), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 972 transitions. [2023-11-28 20:38:04,661 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 972 transitions. Word has length 12 [2023-11-28 20:38:04,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:04,662 INFO L495 AbstractCegarLoop]: Abstraction has 688 states and 972 transitions. [2023-11-28 20:38:04,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-28 20:38:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 972 transitions. [2023-11-28 20:38:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-28 20:38:04,663 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:04,663 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:04,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-28 20:38:04,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:04,870 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:04,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:04,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1556373310, now seen corresponding path program 1 times [2023-11-28 20:38:04,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:04,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735569736] [2023-11-28 20:38:04,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:04,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-28 20:38:05,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:05,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:05,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735569736] [2023-11-28 20:38:05,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735569736] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:05,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379047806] [2023-11-28 20:38:05,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:05,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:05,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:05,017 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:05,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-28 20:38:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:05,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:38:05,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:05,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:05,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:05,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379047806] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:05,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:05,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-28 20:38:05,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027453385] [2023-11-28 20:38:05,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:05,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:05,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:05,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:05,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:05,357 INFO L87 Difference]: Start difference. First operand 688 states and 972 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2023-11-28 20:38:05,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:05,585 INFO L93 Difference]: Finished difference Result 1380 states and 1950 transitions. [2023-11-28 20:38:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:05,586 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 13 [2023-11-28 20:38:05,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:05,591 INFO L225 Difference]: With dead ends: 1380 [2023-11-28 20:38:05,591 INFO L226 Difference]: Without dead ends: 697 [2023-11-28 20:38:05,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:05,595 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 4 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2804 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:05,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 2804 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:38:05,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-11-28 20:38:05,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2023-11-28 20:38:05,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 540 states have (on average 1.6277777777777778) internal successors, (879), 641 states have internal predecessors, (879), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:05,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 981 transitions. [2023-11-28 20:38:05,641 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 981 transitions. Word has length 13 [2023-11-28 20:38:05,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:05,642 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 981 transitions. [2023-11-28 20:38:05,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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) [2023-11-28 20:38:05,642 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 981 transitions. [2023-11-28 20:38:05,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-28 20:38:05,643 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:05,643 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:05,650 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-28 20:38:05,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:05,844 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:05,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1443030686, now seen corresponding path program 2 times [2023-11-28 20:38:05,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:05,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457338941] [2023-11-28 20:38:05,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:05,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:05,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:06,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 20:38:06,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:06,178 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-28 20:38:06,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:06,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457338941] [2023-11-28 20:38:06,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457338941] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:06,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263768560] [2023-11-28 20:38:06,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:38:06,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:06,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:06,181 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:06,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-28 20:38:06,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:38:06,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:38:06,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:38:06,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:06,585 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 20:38:06,585 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:06,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263768560] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:06,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:06,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-28 20:38:06,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727815378] [2023-11-28 20:38:06,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:06,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:06,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:06,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:06,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-28 20:38:06,587 INFO L87 Difference]: Start difference. First operand 697 states and 981 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2023-11-28 20:38:06,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:06,989 INFO L93 Difference]: Finished difference Result 697 states and 981 transitions. [2023-11-28 20:38:06,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:06,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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 22 [2023-11-28 20:38:06,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:06,994 INFO L225 Difference]: With dead ends: 697 [2023-11-28 20:38:06,994 INFO L226 Difference]: Without dead ends: 695 [2023-11-28 20:38:06,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:38:06,996 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 690 mSDsluCounter, 1981 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 2885 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:06,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 2885 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:38:06,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-28 20:38:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2023-11-28 20:38:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 540 states have (on average 1.624074074074074) internal successors, (877), 639 states have internal predecessors, (877), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 979 transitions. [2023-11-28 20:38:07,023 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 979 transitions. Word has length 22 [2023-11-28 20:38:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:07,024 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 979 transitions. [2023-11-28 20:38:07,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 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) [2023-11-28 20:38:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 979 transitions. [2023-11-28 20:38:07,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-28 20:38:07,025 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:07,025 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:07,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-28 20:38:07,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-28 20:38:07,230 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:07,230 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:07,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1149463341, now seen corresponding path program 1 times [2023-11-28 20:38:07,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:07,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136777688] [2023-11-28 20:38:07,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:07,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:07,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 20:38:07,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:07,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 20:38:07,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:07,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136777688] [2023-11-28 20:38:07,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136777688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:07,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:07,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:38:07,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023962217] [2023-11-28 20:38:07,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:07,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:38:07,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:07,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:38:07,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:07,440 INFO L87 Difference]: Start difference. First operand 695 states and 979 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-28 20:38:07,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:07,640 INFO L93 Difference]: Finished difference Result 1373 states and 1942 transitions. [2023-11-28 20:38:07,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:38:07,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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 27 [2023-11-28 20:38:07,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:07,646 INFO L225 Difference]: With dead ends: 1373 [2023-11-28 20:38:07,646 INFO L226 Difference]: Without dead ends: 698 [2023-11-28 20:38:07,648 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 [2023-11-28 20:38:07,649 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 1 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:07,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1863 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:07,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-28 20:38:07,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 698. [2023-11-28 20:38:07,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 543 states have (on average 1.6206261510128914) internal successors, (880), 642 states have internal predecessors, (880), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:07,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 982 transitions. [2023-11-28 20:38:07,686 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 982 transitions. Word has length 27 [2023-11-28 20:38:07,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:07,686 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 982 transitions. [2023-11-28 20:38:07,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 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) [2023-11-28 20:38:07,687 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 982 transitions. [2023-11-28 20:38:07,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-28 20:38:07,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:07,688 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] [2023-11-28 20:38:07,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-28 20:38:07,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:07,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:07,688 INFO L85 PathProgramCache]: Analyzing trace with hash -828953227, now seen corresponding path program 1 times [2023-11-28 20:38:07,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:07,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413829932] [2023-11-28 20:38:07,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:07,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:07,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 20:38:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:07,934 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 20:38:07,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:07,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413829932] [2023-11-28 20:38:07,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413829932] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:07,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:07,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:38:07,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709172140] [2023-11-28 20:38:07,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:07,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:38:07,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:07,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:38:07,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:07,936 INFO L87 Difference]: Start difference. First operand 698 states and 982 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-28 20:38:08,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:08,159 INFO L93 Difference]: Finished difference Result 972 states and 1395 transitions. [2023-11-28 20:38:08,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:38:08,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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 29 [2023-11-28 20:38:08,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:08,167 INFO L225 Difference]: With dead ends: 972 [2023-11-28 20:38:08,168 INFO L226 Difference]: Without dead ends: 970 [2023-11-28 20:38:08,168 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 [2023-11-28 20:38:08,169 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 387 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:08,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 1850 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:38:08,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-28 20:38:08,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 702. [2023-11-28 20:38:08,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 547 states have (on average 1.6179159049360146) internal successors, (885), 646 states have internal predecessors, (885), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:08,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 987 transitions. [2023-11-28 20:38:08,213 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 987 transitions. Word has length 29 [2023-11-28 20:38:08,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:08,214 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 987 transitions. [2023-11-28 20:38:08,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 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) [2023-11-28 20:38:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 987 transitions. [2023-11-28 20:38:08,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-28 20:38:08,215 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:08,215 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] [2023-11-28 20:38:08,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-28 20:38:08,215 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:08,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash 112301005, now seen corresponding path program 1 times [2023-11-28 20:38:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49850278] [2023-11-28 20:38:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:08,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:08,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:08,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-28 20:38:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:08,459 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-28 20:38:08,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:08,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49850278] [2023-11-28 20:38:08,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49850278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:08,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [149039257] [2023-11-28 20:38:08,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:08,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:08,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:08,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:08,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-28 20:38:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:08,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:38:08,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:38:08,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:09,082 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-28 20:38:09,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [149039257] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:09,083 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-28 20:38:09,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323767776] [2023-11-28 20:38:09,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:09,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:38:09,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:09,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:38:09,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:38:09,085 INFO L87 Difference]: Start difference. First operand 702 states and 987 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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) [2023-11-28 20:38:09,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:09,488 INFO L93 Difference]: Finished difference Result 1407 states and 1983 transitions. [2023-11-28 20:38:09,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-28 20:38:09,489 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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 30 [2023-11-28 20:38:09,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:09,494 INFO L225 Difference]: With dead ends: 1407 [2023-11-28 20:38:09,494 INFO L226 Difference]: Without dead ends: 719 [2023-11-28 20:38:09,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:38:09,497 INFO L413 NwaCegarLoop]: 928 mSDtfsCounter, 7 mSDsluCounter, 4630 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5558 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:09,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5558 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:38:09,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2023-11-28 20:38:09,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 719. [2023-11-28 20:38:09,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 565 states have (on average 1.5964601769911504) internal successors, (902), 663 states have internal predecessors, (902), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1004 transitions. [2023-11-28 20:38:09,533 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1004 transitions. Word has length 30 [2023-11-28 20:38:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:09,534 INFO L495 AbstractCegarLoop]: Abstraction has 719 states and 1004 transitions. [2023-11-28 20:38:09,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 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) [2023-11-28 20:38:09,534 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1004 transitions. [2023-11-28 20:38:09,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-28 20:38:09,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:09,536 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] [2023-11-28 20:38:09,543 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-28 20:38:09,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:09,736 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:09,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:09,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1127950257, now seen corresponding path program 1 times [2023-11-28 20:38:09,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:09,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711061247] [2023-11-28 20:38:09,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:09,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:09,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:09,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-28 20:38:09,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:09,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711061247] [2023-11-28 20:38:09,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711061247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:09,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:09,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:38:09,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335261273] [2023-11-28 20:38:09,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:09,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:38:09,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:09,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:38:09,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:09,982 INFO L87 Difference]: Start difference. First operand 719 states and 1004 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:38:10,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:10,156 INFO L93 Difference]: Finished difference Result 733 states and 1020 transitions. [2023-11-28 20:38:10,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:38:10,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 49 [2023-11-28 20:38:10,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:10,162 INFO L225 Difference]: With dead ends: 733 [2023-11-28 20:38:10,162 INFO L226 Difference]: Without dead ends: 731 [2023-11-28 20:38:10,163 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 [2023-11-28 20:38:10,163 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 3 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1858 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:10,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1858 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:10,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2023-11-28 20:38:10,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 729. [2023-11-28 20:38:10,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 575 states have (on average 1.5913043478260869) internal successors, (915), 673 states have internal predecessors, (915), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:10,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1017 transitions. [2023-11-28 20:38:10,202 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1017 transitions. Word has length 49 [2023-11-28 20:38:10,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:10,202 INFO L495 AbstractCegarLoop]: Abstraction has 729 states and 1017 transitions. [2023-11-28 20:38:10,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:38:10,203 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1017 transitions. [2023-11-28 20:38:10,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-28 20:38:10,204 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:10,205 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] [2023-11-28 20:38:10,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-28 20:38:10,205 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:10,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:10,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1127948528, now seen corresponding path program 1 times [2023-11-28 20:38:10,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:10,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394677530] [2023-11-28 20:38:10,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:10,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:10,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:10,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:10,415 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-28 20:38:10,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:10,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394677530] [2023-11-28 20:38:10,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394677530] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:10,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:10,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-28 20:38:10,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903287731] [2023-11-28 20:38:10,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:10,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-28 20:38:10,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:10,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-28 20:38:10,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-28 20:38:10,417 INFO L87 Difference]: Start difference. First operand 729 states and 1017 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:38:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:10,574 INFO L93 Difference]: Finished difference Result 729 states and 1017 transitions. [2023-11-28 20:38:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-28 20:38:10,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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 49 [2023-11-28 20:38:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:10,579 INFO L225 Difference]: With dead ends: 729 [2023-11-28 20:38:10,580 INFO L226 Difference]: Without dead ends: 728 [2023-11-28 20:38:10,580 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 [2023-11-28 20:38:10,581 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 0 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:10,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1861 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:10,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 728 states. [2023-11-28 20:38:10,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 728 to 724. [2023-11-28 20:38:10,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 571 states have (on average 1.5919439579684764) internal successors, (909), 668 states have internal predecessors, (909), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:10,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1011 transitions. [2023-11-28 20:38:10,617 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1011 transitions. Word has length 49 [2023-11-28 20:38:10,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:10,617 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1011 transitions. [2023-11-28 20:38:10,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 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) [2023-11-28 20:38:10,618 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1011 transitions. [2023-11-28 20:38:10,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-28 20:38:10,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:10,619 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] [2023-11-28 20:38:10,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-28 20:38:10,619 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:10,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:10,620 INFO L85 PathProgramCache]: Analyzing trace with hash -659877298, now seen corresponding path program 1 times [2023-11-28 20:38:10,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:10,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683984290] [2023-11-28 20:38:10,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:10,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:10,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:10,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:10,945 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-28 20:38:10,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683984290] [2023-11-28 20:38:10,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683984290] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:10,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599353812] [2023-11-28 20:38:10,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:10,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:10,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:10,947 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:10,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-28 20:38:11,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:11,438 INFO L262 TraceCheckSpWp]: Trace formula consists of 830 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:38:11,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:11,462 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-28 20:38:11,462 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:11,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599353812] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:11,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:11,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-28 20:38:11,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188778086] [2023-11-28 20:38:11,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:11,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:11,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:11,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:11,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:11,464 INFO L87 Difference]: Start difference. First operand 724 states and 1011 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-28 20:38:11,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:11,720 INFO L93 Difference]: Finished difference Result 996 states and 1423 transitions. [2023-11-28 20:38:11,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:11,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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 51 [2023-11-28 20:38:11,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:11,727 INFO L225 Difference]: With dead ends: 996 [2023-11-28 20:38:11,727 INFO L226 Difference]: Without dead ends: 995 [2023-11-28 20:38:11,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:11,728 INFO L413 NwaCegarLoop]: 1318 mSDtfsCounter, 774 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 790 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:11,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [790 Valid, 2793 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:38:11,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2023-11-28 20:38:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 723. [2023-11-28 20:38:11,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 571 states have (on average 1.5901926444833625) internal successors, (908), 667 states have internal predecessors, (908), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:11,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1010 transitions. [2023-11-28 20:38:11,766 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1010 transitions. Word has length 51 [2023-11-28 20:38:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:11,766 INFO L495 AbstractCegarLoop]: Abstraction has 723 states and 1010 transitions. [2023-11-28 20:38:11,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 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) [2023-11-28 20:38:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1010 transitions. [2023-11-28 20:38:11,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-28 20:38:11,768 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:11,768 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] [2023-11-28 20:38:11,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-28 20:38:11,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-28 20:38:11,976 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:11,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:11,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1018640714, now seen corresponding path program 1 times [2023-11-28 20:38:11,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:11,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375762615] [2023-11-28 20:38:11,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:11,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:12,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:12,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:12,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-28 20:38:12,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:12,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375762615] [2023-11-28 20:38:12,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375762615] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:12,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861633581] [2023-11-28 20:38:12,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:12,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:12,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:12,236 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:12,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-28 20:38:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:12,727 INFO L262 TraceCheckSpWp]: Trace formula consists of 831 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:38:12,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-28 20:38:12,750 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:12,776 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-28 20:38:12,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861633581] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:12,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:12,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-28 20:38:12,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477359394] [2023-11-28 20:38:12,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:12,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:12,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:12,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:12,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:12,778 INFO L87 Difference]: Start difference. First operand 723 states and 1010 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) 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) [2023-11-28 20:38:13,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:13,162 INFO L93 Difference]: Finished difference Result 1808 states and 2652 transitions. [2023-11-28 20:38:13,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:13,162 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) 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 52 [2023-11-28 20:38:13,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:13,171 INFO L225 Difference]: With dead ends: 1808 [2023-11-28 20:38:13,171 INFO L226 Difference]: Without dead ends: 1807 [2023-11-28 20:38:13,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:13,172 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 2314 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2346 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:13,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2346 Valid, 4112 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:38:13,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1807 states. [2023-11-28 20:38:13,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1807 to 735. [2023-11-28 20:38:13,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 583 states have (on average 1.5831903945111492) internal successors, (923), 679 states have internal predecessors, (923), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:13,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1025 transitions. [2023-11-28 20:38:13,207 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1025 transitions. Word has length 52 [2023-11-28 20:38:13,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:13,207 INFO L495 AbstractCegarLoop]: Abstraction has 735 states and 1025 transitions. [2023-11-28 20:38:13,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) 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) [2023-11-28 20:38:13,207 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1025 transitions. [2023-11-28 20:38:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-28 20:38:13,208 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:13,208 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] [2023-11-28 20:38:13,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-28 20:38:13,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-28 20:38:13,410 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:13,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:13,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1116957320, now seen corresponding path program 1 times [2023-11-28 20:38:13,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:13,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202264271] [2023-11-28 20:38:13,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:13,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:13,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:13,640 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-28 20:38:13,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:13,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202264271] [2023-11-28 20:38:13,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202264271] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:13,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736140460] [2023-11-28 20:38:13,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:13,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:13,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:13,642 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:13,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-28 20:38:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:14,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 784 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:38:14,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-28 20:38:14,142 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:14,166 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-28 20:38:14,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736140460] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:14,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:14,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-28 20:38:14,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506456299] [2023-11-28 20:38:14,167 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:14,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:38:14,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:14,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:38:14,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:14,169 INFO L87 Difference]: Start difference. First operand 735 states and 1025 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2023-11-28 20:38:14,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:14,330 INFO L93 Difference]: Finished difference Result 1445 states and 2027 transitions. [2023-11-28 20:38:14,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:14,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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 57 [2023-11-28 20:38:14,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:14,336 INFO L225 Difference]: With dead ends: 1445 [2023-11-28 20:38:14,336 INFO L226 Difference]: Without dead ends: 753 [2023-11-28 20:38:14,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:14,339 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 4 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1859 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:14,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1859 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-28 20:38:14,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2023-11-28 20:38:14,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2023-11-28 20:38:14,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 601 states have (on average 1.5657237936772046) internal successors, (941), 697 states have internal predecessors, (941), 57 states have call successors, (57), 12 states have call predecessors, (57), 10 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-28 20:38:14,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1043 transitions. [2023-11-28 20:38:14,378 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1043 transitions. Word has length 57 [2023-11-28 20:38:14,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:14,378 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1043 transitions. [2023-11-28 20:38:14,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 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) [2023-11-28 20:38:14,378 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1043 transitions. [2023-11-28 20:38:14,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-28 20:38:14,379 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:14,379 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] [2023-11-28 20:38:14,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-28 20:38:14,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-28 20:38:14,587 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:14,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:14,588 INFO L85 PathProgramCache]: Analyzing trace with hash 179383380, now seen corresponding path program 1 times [2023-11-28 20:38:14,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:14,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468880654] [2023-11-28 20:38:14,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:14,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:14,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:14,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:14,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:14,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-28 20:38:14,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:14,865 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-28 20:38:14,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:14,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468880654] [2023-11-28 20:38:14,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468880654] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:14,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:14,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:38:14,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944275301] [2023-11-28 20:38:14,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:14,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:14,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:14,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:14,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:14,867 INFO L87 Difference]: Start difference. First operand 753 states and 1043 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-28 20:38:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:17,654 INFO L93 Difference]: Finished difference Result 1532 states and 2155 transitions. [2023-11-28 20:38:17,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:17,654 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 60 [2023-11-28 20:38:17,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:17,661 INFO L225 Difference]: With dead ends: 1532 [2023-11-28 20:38:17,662 INFO L226 Difference]: Without dead ends: 882 [2023-11-28 20:38:17,663 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 [2023-11-28 20:38:17,664 INFO L413 NwaCegarLoop]: 922 mSDtfsCounter, 196 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 2310 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:17,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 2310 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-11-28 20:38:17,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 882 states. [2023-11-28 20:38:17,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 882 to 793. [2023-11-28 20:38:17,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 640 states have (on average 1.5546875) internal successors, (995), 736 states have internal predecessors, (995), 58 states have call successors, (58), 12 states have call predecessors, (58), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1099 transitions. [2023-11-28 20:38:17,707 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1099 transitions. Word has length 60 [2023-11-28 20:38:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:17,707 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1099 transitions. [2023-11-28 20:38:17,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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) [2023-11-28 20:38:17,707 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1099 transitions. [2023-11-28 20:38:17,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-28 20:38:17,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:17,708 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] [2023-11-28 20:38:17,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-28 20:38:17,709 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:17,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:17,709 INFO L85 PathProgramCache]: Analyzing trace with hash 588752825, now seen corresponding path program 1 times [2023-11-28 20:38:17,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:17,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842951307] [2023-11-28 20:38:17,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:17,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:17,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:17,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-28 20:38:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-28 20:38:17,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:17,949 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842951307] [2023-11-28 20:38:17,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842951307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:17,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:17,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:38:17,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924026781] [2023-11-28 20:38:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:17,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:17,951 INFO L87 Difference]: Start difference. First operand 793 states and 1099 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 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) [2023-11-28 20:38:21,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:21,258 INFO L93 Difference]: Finished difference Result 829 states and 1143 transitions. [2023-11-28 20:38:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:21,258 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), 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 62 [2023-11-28 20:38:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:21,263 INFO L225 Difference]: With dead ends: 829 [2023-11-28 20:38:21,263 INFO L226 Difference]: Without dead ends: 827 [2023-11-28 20:38:21,264 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 [2023-11-28 20:38:21,264 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 77 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 2342 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:21,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 2342 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-28 20:38:21,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2023-11-28 20:38:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 793. [2023-11-28 20:38:21,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 640 states have (on average 1.5515625) internal successors, (993), 736 states have internal predecessors, (993), 58 states have call successors, (58), 12 states have call predecessors, (58), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:21,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1097 transitions. [2023-11-28 20:38:21,293 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1097 transitions. Word has length 62 [2023-11-28 20:38:21,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:21,293 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1097 transitions. [2023-11-28 20:38:21,293 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), 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) [2023-11-28 20:38:21,293 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1097 transitions. [2023-11-28 20:38:21,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-28 20:38:21,294 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:21,294 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] [2023-11-28 20:38:21,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-28 20:38:21,294 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:21,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:21,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1836208737, now seen corresponding path program 2 times [2023-11-28 20:38:21,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:21,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418026977] [2023-11-28 20:38:21,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:21,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:21,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:21,573 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-28 20:38:21,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:21,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418026977] [2023-11-28 20:38:21,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418026977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:21,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099906747] [2023-11-28 20:38:21,574 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:38:21,574 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:21,574 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:21,575 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:21,585 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-28 20:38:22,040 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-28 20:38:22,040 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:38:22,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-28 20:38:22,047 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:22,122 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-28 20:38:22,122 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:22,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099906747] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:22,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:22,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-28 20:38:22,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770880169] [2023-11-28 20:38:22,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:22,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-28 20:38:22,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:22,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-28 20:38:22,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:38:22,125 INFO L87 Difference]: Start difference. First operand 793 states and 1097 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2023-11-28 20:38:22,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:22,586 INFO L93 Difference]: Finished difference Result 1512 states and 2114 transitions. [2023-11-28 20:38:22,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:22,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 64 [2023-11-28 20:38:22,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:22,590 INFO L225 Difference]: With dead ends: 1512 [2023-11-28 20:38:22,590 INFO L226 Difference]: Without dead ends: 793 [2023-11-28 20:38:22,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-28 20:38:22,593 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 691 mSDsluCounter, 2847 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 3745 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:22,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 3745 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-28 20:38:22,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2023-11-28 20:38:22,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 793. [2023-11-28 20:38:22,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 793 states, 640 states have (on average 1.55) internal successors, (992), 736 states have internal predecessors, (992), 58 states have call successors, (58), 12 states have call predecessors, (58), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:22,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 793 states to 793 states and 1096 transitions. [2023-11-28 20:38:22,618 INFO L78 Accepts]: Start accepts. Automaton has 793 states and 1096 transitions. Word has length 64 [2023-11-28 20:38:22,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:22,618 INFO L495 AbstractCegarLoop]: Abstraction has 793 states and 1096 transitions. [2023-11-28 20:38:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2023-11-28 20:38:22,618 INFO L276 IsEmpty]: Start isEmpty. Operand 793 states and 1096 transitions. [2023-11-28 20:38:22,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-28 20:38:22,619 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:22,619 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:22,627 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-28 20:38:22,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-28 20:38:22,820 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:22,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:22,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1116818298, now seen corresponding path program 2 times [2023-11-28 20:38:22,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:22,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224250908] [2023-11-28 20:38:22,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:22,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:23,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:23,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:23,194 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-28 20:38:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:23,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224250908] [2023-11-28 20:38:23,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224250908] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:23,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095158575] [2023-11-28 20:38:23,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:38:23,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:23,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:23,196 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:23,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-28 20:38:23,767 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:38:23,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:38:23,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 898 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:38:23,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:23,837 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-28 20:38:23,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-28 20:38:23,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095158575] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:23,944 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:23,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-28 20:38:23,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727159792] [2023-11-28 20:38:23,944 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:23,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-28 20:38:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:23,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-28 20:38:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-28 20:38:23,946 INFO L87 Difference]: Start difference. First operand 793 states and 1096 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2023-11-28 20:38:24,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:24,684 INFO L93 Difference]: Finished difference Result 1569 states and 2185 transitions. [2023-11-28 20:38:24,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 20:38:24,685 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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 75 [2023-11-28 20:38:24,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:24,690 INFO L225 Difference]: With dead ends: 1569 [2023-11-28 20:38:24,690 INFO L226 Difference]: Without dead ends: 828 [2023-11-28 20:38:24,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2023-11-28 20:38:24,693 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 11 mSDsluCounter, 6461 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7388 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:24,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 7388 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 393 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-28 20:38:24,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2023-11-28 20:38:24,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 828. [2023-11-28 20:38:24,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 676 states have (on average 1.5192307692307692) internal successors, (1027), 771 states have internal predecessors, (1027), 58 states have call successors, (58), 12 states have call predecessors, (58), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:24,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1131 transitions. [2023-11-28 20:38:24,752 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1131 transitions. Word has length 75 [2023-11-28 20:38:24,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:24,753 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1131 transitions. [2023-11-28 20:38:24,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 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) [2023-11-28 20:38:24,753 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1131 transitions. [2023-11-28 20:38:24,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-28 20:38:24,754 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:24,754 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:24,763 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-28 20:38:24,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-28 20:38:24,955 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:24,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1396524060, now seen corresponding path program 1 times [2023-11-28 20:38:24,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:24,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397365842] [2023-11-28 20:38:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:25,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:25,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:38:25,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:25,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397365842] [2023-11-28 20:38:25,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397365842] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:25,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939322115] [2023-11-28 20:38:25,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:25,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:25,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:25,394 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:25,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-28 20:38:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:26,059 INFO L262 TraceCheckSpWp]: Trace formula consists of 1099 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-28 20:38:26,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:26,111 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:38:26,111 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:38:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939322115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:26,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:26,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-28 20:38:26,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755102310] [2023-11-28 20:38:26,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:26,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-28 20:38:26,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:26,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-28 20:38:26,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:38:26,255 INFO L87 Difference]: Start difference. First operand 828 states and 1131 transitions. Second operand has 13 states, 12 states have (on average 5.75) internal successors, (69), 13 states have internal predecessors, (69), 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) [2023-11-28 20:38:27,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:27,243 INFO L93 Difference]: Finished difference Result 3933 states and 5767 transitions. [2023-11-28 20:38:27,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-28 20:38:27,244 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 13 states have internal predecessors, (69), 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 99 [2023-11-28 20:38:27,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:27,269 INFO L225 Difference]: With dead ends: 3933 [2023-11-28 20:38:27,269 INFO L226 Difference]: Without dead ends: 3932 [2023-11-28 20:38:27,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-28 20:38:27,272 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 5744 mSDsluCounter, 7375 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5824 SdHoareTripleChecker+Valid, 8300 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:27,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5824 Valid, 8300 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-28 20:38:27,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2023-11-28 20:38:27,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 852. [2023-11-28 20:38:27,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 700 states have (on average 1.51) internal successors, (1057), 795 states have internal predecessors, (1057), 58 states have call successors, (58), 12 states have call predecessors, (58), 10 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:27,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1161 transitions. [2023-11-28 20:38:27,382 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1161 transitions. Word has length 99 [2023-11-28 20:38:27,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:27,382 INFO L495 AbstractCegarLoop]: Abstraction has 852 states and 1161 transitions. [2023-11-28 20:38:27,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 13 states have internal predecessors, (69), 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) [2023-11-28 20:38:27,383 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1161 transitions. [2023-11-28 20:38:27,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-28 20:38:27,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:27,384 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:27,393 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-28 20:38:27,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:27,584 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:27,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash 945150769, now seen corresponding path program 1 times [2023-11-28 20:38:27,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:27,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516649296] [2023-11-28 20:38:27,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:27,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:28,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:28,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:28,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:38:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:38:28,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:28,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516649296] [2023-11-28 20:38:28,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516649296] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:28,205 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:28,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:28,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818548414] [2023-11-28 20:38:28,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:28,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:28,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:28,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:28,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:28,206 INFO L87 Difference]: Start difference. First operand 852 states and 1161 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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) [2023-11-28 20:38:31,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:31,402 INFO L93 Difference]: Finished difference Result 1490 states and 2068 transitions. [2023-11-28 20:38:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:38:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 104 [2023-11-28 20:38:31,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:31,407 INFO L225 Difference]: With dead ends: 1490 [2023-11-28 20:38:31,407 INFO L226 Difference]: Without dead ends: 891 [2023-11-28 20:38:31,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-28 20:38:31,410 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1099 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 2259 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:31,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 2259 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-28 20:38:31,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2023-11-28 20:38:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 855. [2023-11-28 20:38:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 702 states have (on average 1.5071225071225072) internal successors, (1058), 797 states have internal predecessors, (1058), 58 states have call successors, (58), 13 states have call predecessors, (58), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:31,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1162 transitions. [2023-11-28 20:38:31,453 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1162 transitions. Word has length 104 [2023-11-28 20:38:31,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:31,454 INFO L495 AbstractCegarLoop]: Abstraction has 855 states and 1162 transitions. [2023-11-28 20:38:31,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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) [2023-11-28 20:38:31,454 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1162 transitions. [2023-11-28 20:38:31,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-28 20:38:31,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:31,455 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:31,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-28 20:38:31,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:31,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:31,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1173878081, now seen corresponding path program 1 times [2023-11-28 20:38:31,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:31,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760071332] [2023-11-28 20:38:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:31,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:31,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:31,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:38:31,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:31,744 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:38:31,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:31,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760071332] [2023-11-28 20:38:31,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760071332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:31,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044065798] [2023-11-28 20:38:31,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:31,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:31,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:31,745 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:31,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-28 20:38:32,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:32,377 INFO L262 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-28 20:38:32,380 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:32,424 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:38:32,424 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-28 20:38:32,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2044065798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:32,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-28 20:38:32,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-28 20:38:32,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327565741] [2023-11-28 20:38:32,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:32,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:32,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:32,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:32,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:32,427 INFO L87 Difference]: Start difference. First operand 855 states and 1162 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 20:38:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:32,736 INFO L93 Difference]: Finished difference Result 1578 states and 2204 transitions. [2023-11-28 20:38:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:32,737 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 106 [2023-11-28 20:38:32,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:32,741 INFO L225 Difference]: With dead ends: 1578 [2023-11-28 20:38:32,741 INFO L226 Difference]: Without dead ends: 911 [2023-11-28 20:38:32,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:32,744 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 459 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 2466 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:32,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 2466 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-28 20:38:32,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 911 states. [2023-11-28 20:38:32,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 911 to 837. [2023-11-28 20:38:32,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 837 states, 693 states have (on average 1.4935064935064934) internal successors, (1035), 779 states have internal predecessors, (1035), 58 states have call successors, (58), 13 states have call predecessors, (58), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:32,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 837 states to 837 states and 1139 transitions. [2023-11-28 20:38:32,779 INFO L78 Accepts]: Start accepts. Automaton has 837 states and 1139 transitions. Word has length 106 [2023-11-28 20:38:32,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:32,779 INFO L495 AbstractCegarLoop]: Abstraction has 837 states and 1139 transitions. [2023-11-28 20:38:32,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-28 20:38:32,780 INFO L276 IsEmpty]: Start isEmpty. Operand 837 states and 1139 transitions. [2023-11-28 20:38:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-28 20:38:32,781 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:32,781 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:32,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-28 20:38:32,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:32,986 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:32,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:32,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1479579554, now seen corresponding path program 1 times [2023-11-28 20:38:32,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:32,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043818363] [2023-11-28 20:38:32,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:32,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:33,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:33,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:33,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:33,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:38:33,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-28 20:38:33,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:33,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043818363] [2023-11-28 20:38:33,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043818363] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:33,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:33,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-28 20:38:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403439088] [2023-11-28 20:38:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:33,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-28 20:38:33,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-28 20:38:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-28 20:38:33,204 INFO L87 Difference]: Start difference. First operand 837 states and 1139 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2023-11-28 20:38:36,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-28 20:38:37,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:37,144 INFO L93 Difference]: Finished difference Result 873 states and 1185 transitions. [2023-11-28 20:38:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-28 20:38:37,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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 108 [2023-11-28 20:38:37,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:37,148 INFO L225 Difference]: With dead ends: 873 [2023-11-28 20:38:37,149 INFO L226 Difference]: Without dead ends: 872 [2023-11-28 20:38:37,149 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 [2023-11-28 20:38:37,149 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 78 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:37,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 2308 Invalid, 514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-11-28 20:38:37,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-28 20:38:37,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 836. [2023-11-28 20:38:37,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 693 states have (on average 1.492063492063492) internal successors, (1034), 778 states have internal predecessors, (1034), 58 states have call successors, (58), 13 states have call predecessors, (58), 11 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:37,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1138 transitions. [2023-11-28 20:38:37,213 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1138 transitions. Word has length 108 [2023-11-28 20:38:37,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:37,213 INFO L495 AbstractCegarLoop]: Abstraction has 836 states and 1138 transitions. [2023-11-28 20:38:37,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 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) [2023-11-28 20:38:37,213 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1138 transitions. [2023-11-28 20:38:37,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-28 20:38:37,214 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:37,215 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:37,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-28 20:38:37,215 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:37,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:37,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1377673560, now seen corresponding path program 1 times [2023-11-28 20:38:37,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:37,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146700708] [2023-11-28 20:38:37,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:37,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:37,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:37,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:38:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:38,128 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:38:38,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:38,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146700708] [2023-11-28 20:38:38,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146700708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-28 20:38:38,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-28 20:38:38,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-28 20:38:38,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709089344] [2023-11-28 20:38:38,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-28 20:38:38,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-28 20:38:38,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:38,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-28 20:38:38,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-28 20:38:38,131 INFO L87 Difference]: Start difference. First operand 836 states and 1138 transitions. Second operand has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:39,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-28 20:38:41,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-28 20:38:43,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:43,986 INFO L93 Difference]: Finished difference Result 1551 states and 2148 transitions. [2023-11-28 20:38:43,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-28 20:38:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 109 [2023-11-28 20:38:43,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:43,992 INFO L225 Difference]: With dead ends: 1551 [2023-11-28 20:38:43,992 INFO L226 Difference]: Without dead ends: 872 [2023-11-28 20:38:43,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:38:43,994 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 77 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:43,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 3173 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2023-11-28 20:38:43,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2023-11-28 20:38:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 838. [2023-11-28 20:38:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 694 states have (on average 1.4927953890489913) internal successors, (1036), 780 states have internal predecessors, (1036), 58 states have call successors, (58), 13 states have call predecessors, (58), 12 states have return successors, (48), 46 states have call predecessors, (48), 46 states have call successors, (48) [2023-11-28 20:38:44,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1142 transitions. [2023-11-28 20:38:44,026 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1142 transitions. Word has length 109 [2023-11-28 20:38:44,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:44,026 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1142 transitions. [2023-11-28 20:38:44,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-28 20:38:44,027 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1142 transitions. [2023-11-28 20:38:44,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-11-28 20:38:44,028 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:44,028 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:44,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-28 20:38:44,029 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:44,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:44,029 INFO L85 PathProgramCache]: Analyzing trace with hash 842637794, now seen corresponding path program 1 times [2023-11-28 20:38:44,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:44,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086312666] [2023-11-28 20:38:44,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:44,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:44,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:44,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:38:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:38:44,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:44,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086312666] [2023-11-28 20:38:44,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086312666] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:44,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314321976] [2023-11-28 20:38:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:44,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:44,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:44,735 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:44,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-28 20:38:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:45,721 INFO L262 TraceCheckSpWp]: Trace formula consists of 1210 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-28 20:38:45,726 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:45,776 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:38:45,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:45,889 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:38:45,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314321976] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:45,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:45,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-28 20:38:45,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890449305] [2023-11-28 20:38:45,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:45,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-28 20:38:45,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:45,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-28 20:38:45,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-11-28 20:38:45,892 INFO L87 Difference]: Start difference. First operand 838 states and 1142 transitions. Second operand has 11 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:50,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:50,140 INFO L93 Difference]: Finished difference Result 1567 states and 2176 transitions. [2023-11-28 20:38:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-28 20:38:50,140 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 110 [2023-11-28 20:38:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:50,145 INFO L225 Difference]: With dead ends: 1567 [2023-11-28 20:38:50,145 INFO L226 Difference]: Without dead ends: 885 [2023-11-28 20:38:50,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-28 20:38:50,147 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 83 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 3172 SdHoareTripleChecker+Invalid, 652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:50,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 3172 Invalid, 652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-11-28 20:38:50,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2023-11-28 20:38:50,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 845. [2023-11-28 20:38:50,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 845 states, 701 states have (on average 1.4935805991440798) internal successors, (1047), 786 states have internal predecessors, (1047), 58 states have call successors, (58), 14 states have call predecessors, (58), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:50,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 845 states to 845 states and 1151 transitions. [2023-11-28 20:38:50,197 INFO L78 Accepts]: Start accepts. Automaton has 845 states and 1151 transitions. Word has length 110 [2023-11-28 20:38:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:50,197 INFO L495 AbstractCegarLoop]: Abstraction has 845 states and 1151 transitions. [2023-11-28 20:38:50,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 6.625) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 845 states and 1151 transitions. [2023-11-28 20:38:50,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-28 20:38:50,199 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:50,200 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:50,210 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-28 20:38:50,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:50,401 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:50,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:50,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1422500568, now seen corresponding path program 2 times [2023-11-28 20:38:50,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:50,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494188944] [2023-11-28 20:38:50,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:50,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:38:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:38:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:38:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:38:51,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:38:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494188944] [2023-11-28 20:38:51,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494188944] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:38:51,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762149716] [2023-11-28 20:38:51,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:38:51,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:38:51,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:38:51,378 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:38:51,385 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-28 20:38:52,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:38:52,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:38:52,901 INFO L262 TraceCheckSpWp]: Trace formula consists of 1255 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-28 20:38:52,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:38:52,978 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:38:52,979 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:38:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:38:53,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762149716] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:38:53,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:38:53,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-11-28 20:38:53,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781989783] [2023-11-28 20:38:53,186 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:38:53,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-28 20:38:53,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:38:53,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-28 20:38:53,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-11-28 20:38:53,188 INFO L87 Difference]: Start difference. First operand 845 states and 1151 transitions. Second operand has 20 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 19 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:59,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:38:59,621 INFO L93 Difference]: Finished difference Result 1589 states and 2210 transitions. [2023-11-28 20:38:59,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-28 20:38:59,622 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 19 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 113 [2023-11-28 20:38:59,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:38:59,627 INFO L225 Difference]: With dead ends: 1589 [2023-11-28 20:38:59,628 INFO L226 Difference]: Without dead ends: 904 [2023-11-28 20:38:59,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=386, Invalid=946, Unknown=0, NotChecked=0, Total=1332 [2023-11-28 20:38:59,630 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 92 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 6616 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:38:59,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 6616 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2023-11-28 20:38:59,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2023-11-28 20:38:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 853. [2023-11-28 20:38:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 853 states, 709 states have (on average 1.4851904090267982) internal successors, (1053), 794 states have internal predecessors, (1053), 58 states have call successors, (58), 14 states have call predecessors, (58), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:38:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1157 transitions. [2023-11-28 20:38:59,685 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1157 transitions. Word has length 113 [2023-11-28 20:38:59,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:38:59,686 INFO L495 AbstractCegarLoop]: Abstraction has 853 states and 1157 transitions. [2023-11-28 20:38:59,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 19 states have internal predecessors, (62), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:38:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1157 transitions. [2023-11-28 20:38:59,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-28 20:38:59,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:38:59,688 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:38:59,700 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-28 20:38:59,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-28 20:38:59,893 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:38:59,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:38:59,894 INFO L85 PathProgramCache]: Analyzing trace with hash 515281728, now seen corresponding path program 1 times [2023-11-28 20:38:59,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:38:59,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051887622] [2023-11-28 20:38:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:38:59,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:38:59,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:39:00,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-28 20:39:00,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:00,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051887622] [2023-11-28 20:39:00,193 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051887622] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:00,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032505873] [2023-11-28 20:39:00,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:00,193 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:00,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:00,194 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:00,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-28 20:39:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:00,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 1127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-28 20:39:00,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:39:00,880 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-28 20:39:00,880 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:39:00,964 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2023-11-28 20:39:00,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032505873] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:39:00,965 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:39:00,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-28 20:39:00,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675598216] [2023-11-28 20:39:00,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:39:00,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-28 20:39:00,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:39:00,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-28 20:39:00,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:39:00,967 INFO L87 Difference]: Start difference. First operand 853 states and 1157 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 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) [2023-11-28 20:39:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:39:01,226 INFO L93 Difference]: Finished difference Result 962 states and 1274 transitions. [2023-11-28 20:39:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-28 20:39:01,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 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 112 [2023-11-28 20:39:01,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:39:01,231 INFO L225 Difference]: With dead ends: 962 [2023-11-28 20:39:01,232 INFO L226 Difference]: Without dead ends: 961 [2023-11-28 20:39:01,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-28 20:39:01,233 INFO L413 NwaCegarLoop]: 917 mSDtfsCounter, 4 mSDsluCounter, 2750 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3667 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-28 20:39:01,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3667 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-28 20:39:01,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2023-11-28 20:39:01,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 958. [2023-11-28 20:39:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 814 states have (on average 1.42997542997543) internal successors, (1164), 899 states have internal predecessors, (1164), 58 states have call successors, (58), 14 states have call predecessors, (58), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:39:01,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1268 transitions. [2023-11-28 20:39:01,276 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1268 transitions. Word has length 112 [2023-11-28 20:39:01,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:39:01,276 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1268 transitions. [2023-11-28 20:39:01,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 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) [2023-11-28 20:39:01,276 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1268 transitions. [2023-11-28 20:39:01,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2023-11-28 20:39:01,277 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:39:01,277 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:39:01,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2023-11-28 20:39:01,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-28 20:39:01,478 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:39:01,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:39:01,478 INFO L85 PathProgramCache]: Analyzing trace with hash -2045492504, now seen corresponding path program 3 times [2023-11-28 20:39:01,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:39:01,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65966025] [2023-11-28 20:39:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:39:01,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:39:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:02,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:39:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:39:02,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:39:02,811 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:39:02,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:39:02,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65966025] [2023-11-28 20:39:02,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65966025] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:39:02,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2024033887] [2023-11-28 20:39:02,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-28 20:39:02,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:39:02,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:39:02,812 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:39:02,813 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-28 20:40:13,644 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-28 20:40:13,644 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:40:13,663 INFO L262 TraceCheckSpWp]: Trace formula consists of 1136 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-28 20:40:13,666 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:40:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:40:13,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:40:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 353 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:40:14,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2024033887] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:40:14,538 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:40:14,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 38 [2023-11-28 20:40:14,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029915788] [2023-11-28 20:40:14,539 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:40:14,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-11-28 20:40:14,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:40:14,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-11-28 20:40:14,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1049, Unknown=0, NotChecked=0, Total=1406 [2023-11-28 20:40:14,541 INFO L87 Difference]: Start difference. First operand 958 states and 1268 transitions. Second operand has 38 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 37 states have internal predecessors, (80), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:40:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:40:33,466 INFO L93 Difference]: Finished difference Result 1736 states and 2387 transitions. [2023-11-28 20:40:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2023-11-28 20:40:33,466 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 37 states have internal predecessors, (80), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 119 [2023-11-28 20:40:33,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:40:33,471 INFO L225 Difference]: With dead ends: 1736 [2023-11-28 20:40:33,471 INFO L226 Difference]: Without dead ends: 1045 [2023-11-28 20:40:33,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=1430, Invalid=3826, Unknown=0, NotChecked=0, Total=5256 [2023-11-28 20:40:33,475 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 123 mSDsluCounter, 13466 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 14358 SdHoareTripleChecker+Invalid, 2655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.8s IncrementalHoareTripleChecker+Time [2023-11-28 20:40:33,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 14358 Invalid, 2655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 2573 Invalid, 0 Unknown, 0 Unchecked, 10.8s Time] [2023-11-28 20:40:33,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1045 states. [2023-11-28 20:40:33,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1045 to 976. [2023-11-28 20:40:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 832 states have (on average 1.4206730769230769) internal successors, (1182), 917 states have internal predecessors, (1182), 58 states have call successors, (58), 14 states have call predecessors, (58), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:40:33,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1286 transitions. [2023-11-28 20:40:33,518 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1286 transitions. Word has length 119 [2023-11-28 20:40:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:40:33,518 INFO L495 AbstractCegarLoop]: Abstraction has 976 states and 1286 transitions. [2023-11-28 20:40:33,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 2.2857142857142856) internal successors, (80), 37 states have internal predecessors, (80), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:40:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1286 transitions. [2023-11-28 20:40:33,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-28 20:40:33,520 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:40:33,520 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:40:33,544 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-28 20:40:33,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:40:33,720 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:40:33,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:40:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash 519995206, now seen corresponding path program 2 times [2023-11-28 20:40:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:40:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085910999] [2023-11-28 20:40:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:40:33,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:40:33,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:34,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:40:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:34,157 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:40:34,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:40:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085910999] [2023-11-28 20:40:34,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085910999] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:40:34,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1588992383] [2023-11-28 20:40:34,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-28 20:40:34,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:40:34,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:40:34,159 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:40:34,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-28 20:40:35,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-28 20:40:35,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:40:35,009 INFO L262 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-28 20:40:35,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:40:35,082 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:40:35,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:40:35,347 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 220 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-28 20:40:35,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1588992383] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:40:35,348 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:40:35,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-28 20:40:35,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661341211] [2023-11-28 20:40:35,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:40:35,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-28 20:40:35,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:40:35,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-28 20:40:35,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-28 20:40:35,350 INFO L87 Difference]: Start difference. First operand 976 states and 1286 transitions. Second operand has 25 states, 24 states have (on average 4.875) internal successors, (117), 25 states have internal predecessors, (117), 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) [2023-11-28 20:40:37,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:40:37,543 INFO L93 Difference]: Finished difference Result 7383 states and 10906 transitions. [2023-11-28 20:40:37,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-28 20:40:37,543 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 4.875) internal successors, (117), 25 states have internal predecessors, (117), 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 123 [2023-11-28 20:40:37,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:40:37,558 INFO L225 Difference]: With dead ends: 7383 [2023-11-28 20:40:37,558 INFO L226 Difference]: Without dead ends: 7382 [2023-11-28 20:40:37,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-28 20:40:37,560 INFO L413 NwaCegarLoop]: 914 mSDtfsCounter, 12620 mSDsluCounter, 15904 mSDsCounter, 0 mSdLazyCounter, 1034 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12796 SdHoareTripleChecker+Valid, 16818 SdHoareTripleChecker+Invalid, 1122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-28 20:40:37,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12796 Valid, 16818 Invalid, 1122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [88 Valid, 1034 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-28 20:40:37,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7382 states. [2023-11-28 20:40:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7382 to 1024. [2023-11-28 20:40:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 880 states have (on average 1.4113636363636364) internal successors, (1242), 965 states have internal predecessors, (1242), 58 states have call successors, (58), 14 states have call predecessors, (58), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:40:37,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1346 transitions. [2023-11-28 20:40:37,686 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1346 transitions. Word has length 123 [2023-11-28 20:40:37,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:40:37,687 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 1346 transitions. [2023-11-28 20:40:37,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 4.875) internal successors, (117), 25 states have internal predecessors, (117), 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) [2023-11-28 20:40:37,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1346 transitions. [2023-11-28 20:40:37,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-11-28 20:40:37,689 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:40:37,689 INFO L195 NwaCegarLoop]: trace histogram [22, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:40:37,698 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-28 20:40:37,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:40:37,890 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:40:37,890 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:40:37,890 INFO L85 PathProgramCache]: Analyzing trace with hash 894574184, now seen corresponding path program 4 times [2023-11-28 20:40:37,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:40:37,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346963581] [2023-11-28 20:40:37,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:40:37,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:40:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:40:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:40:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:40:40,297 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:40:40,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:40:40,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346963581] [2023-11-28 20:40:40,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346963581] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:40:40,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1232892888] [2023-11-28 20:40:40,297 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-28 20:40:40,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:40:40,298 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:40:40,298 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:40:40,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-28 20:40:46,354 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-28 20:40:46,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-28 20:40:46,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 1525 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-28 20:40:46,368 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-28 20:40:47,276 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:40:47,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-28 20:40:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:40:54,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1232892888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-28 20:40:54,377 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-28 20:40:54,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26, 26] total 74 [2023-11-28 20:40:54,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283980421] [2023-11-28 20:40:54,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-28 20:40:54,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 74 states [2023-11-28 20:40:54,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-28 20:40:54,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2023-11-28 20:40:54,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1295, Invalid=4107, Unknown=0, NotChecked=0, Total=5402 [2023-11-28 20:40:54,381 INFO L87 Difference]: Start difference. First operand 1024 states and 1346 transitions. Second operand has 74 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 73 states have internal predecessors, (116), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:41:35,586 WARN L293 SmtUtils]: Spent 13.86s on a formula simplification. DAG size of input: 143 DAG size of output: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:42:09,656 WARN L293 SmtUtils]: Spent 15.56s on a formula simplification. DAG size of input: 137 DAG size of output: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:42:43,497 WARN L293 SmtUtils]: Spent 8.53s on a formula simplification. DAG size of input: 131 DAG size of output: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:43:05,197 WARN L293 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 125 DAG size of output: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:43:21,560 WARN L293 SmtUtils]: Spent 7.00s on a formula simplification. DAG size of input: 119 DAG size of output: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:43:46,812 WARN L293 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 113 DAG size of output: 15 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:50:20,693 WARN L293 SmtUtils]: Spent 3.03m on a formula simplification that was a NOOP. DAG size: 141 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-11-28 20:50:24,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.33s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:28,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:31,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.38s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:32,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:36,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:38,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:41,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:44,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.82s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:48,295 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.89s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:52,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:54,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:55,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:58,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.76s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:50:59,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:03,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:05,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:07,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:09,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:11,500 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:17,953 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:22,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:33,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-28 20:51:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-28 20:51:33,781 INFO L93 Difference]: Finished difference Result 1868 states and 2579 transitions. [2023-11-28 20:51:33,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-11-28 20:51:33,781 INFO L78 Accepts]: Start accepts. Automaton has has 74 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 73 states have internal predecessors, (116), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 131 [2023-11-28 20:51:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-28 20:51:33,784 INFO L225 Difference]: With dead ends: 1868 [2023-11-28 20:51:33,784 INFO L226 Difference]: Without dead ends: 1164 [2023-11-28 20:51:33,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 359 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1966 ImplicationChecksByTransitivity, 574.7s TimeCoverageRelationStatistics Valid=5454, Invalid=15134, Unknown=4, NotChecked=0, Total=20592 [2023-11-28 20:51:33,791 INFO L413 NwaCegarLoop]: 891 mSDtfsCounter, 163 mSDsluCounter, 22037 mSDsCounter, 0 mSdLazyCounter, 5965 mSolverCounterSat, 103 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 71.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 22928 SdHoareTripleChecker+Invalid, 6071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 5965 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.4s IncrementalHoareTripleChecker+Time [2023-11-28 20:51:33,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 22928 Invalid, 6071 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 5965 Invalid, 3 Unknown, 0 Unchecked, 72.4s Time] [2023-11-28 20:51:33,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2023-11-28 20:51:33,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1061. [2023-11-28 20:51:33,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 917 states have (on average 1.3947655398037078) internal successors, (1279), 1002 states have internal predecessors, (1279), 58 states have call successors, (58), 14 states have call predecessors, (58), 12 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2023-11-28 20:51:33,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1383 transitions. [2023-11-28 20:51:33,886 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1383 transitions. Word has length 131 [2023-11-28 20:51:33,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-28 20:51:33,887 INFO L495 AbstractCegarLoop]: Abstraction has 1061 states and 1383 transitions. [2023-11-28 20:51:33,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 74 states, 71 states have (on average 1.6338028169014085) internal successors, (116), 73 states have internal predecessors, (116), 1 states have call successors, (3), 2 states have call predecessors, (3), 4 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-28 20:51:33,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1383 transitions. [2023-11-28 20:51:33,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-11-28 20:51:33,889 INFO L187 NwaCegarLoop]: Found error trace [2023-11-28 20:51:33,889 INFO L195 NwaCegarLoop]: trace histogram [46, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-28 20:51:33,932 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-28 20:51:34,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-28 20:51:34,090 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_ascii_isalnumErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_ascii_isalnumErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 93 more)] === [2023-11-28 20:51:34,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-28 20:51:34,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1150937752, now seen corresponding path program 5 times [2023-11-28 20:51:34,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-28 20:51:34,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779330363] [2023-11-28 20:51:34,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-28 20:51:34,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-28 20:51:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:51:36,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-28 20:51:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:51:36,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-28 20:51:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-28 20:51:39,219 INFO L134 CoverageAnalysis]: Checked inductivity of 1379 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-28 20:51:39,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-28 20:51:39,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779330363] [2023-11-28 20:51:39,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779330363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-28 20:51:39,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2338947] [2023-11-28 20:51:39,220 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-28 20:51:39,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-28 20:51:39,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-28 20:51:39,221 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-28 20:51:39,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ed23efa-e258-41d3-b5f2-0e3dec7eb8c8/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process