./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/expand-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/expand-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ --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 aa9575a9d6782b3f681109b33c8859a1aefcf9cb32eb5af53f59cc43db765f1e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:39:19,493 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:39:19,607 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-23 22:39:19,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:39:19,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:39:19,652 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:39:19,655 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:39:19,655 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:39:19,656 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:39:19,662 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:39:19,663 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:39:19,664 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:39:19,665 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:39:19,667 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:39:19,667 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:39:19,668 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:39:19,668 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:39:19,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:39:19,669 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:39:19,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:39:19,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:39:19,671 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:39:19,671 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:39:19,672 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:39:19,672 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:39:19,673 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:39:19,674 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:39:19,674 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:39:19,675 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:39:19,675 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:39:19,677 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:39:19,677 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:39:19,678 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:39:19,678 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:39:19,678 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:39:19,679 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:39:19,679 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:39:19,679 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:39:19,679 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:39:19,680 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:39:19,680 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:39:19,680 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_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa9575a9d6782b3f681109b33c8859a1aefcf9cb32eb5af53f59cc43db765f1e [2023-11-23 22:39:20,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:39:20,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:39:20,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:39:20,060 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:39:20,061 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:39:20,062 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/busybox-1.22.0/expand-2.i [2023-11-23 22:39:23,202 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:39:23,762 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:39:23,763 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/sv-benchmarks/c/busybox-1.22.0/expand-2.i [2023-11-23 22:39:23,801 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/data/a0046f4ae/8de8cf0dd0a54471996ea40082ea640a/FLAGe9e98225d [2023-11-23 22:39:23,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/data/a0046f4ae/8de8cf0dd0a54471996ea40082ea640a [2023-11-23 22:39:23,827 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:39:23,831 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:39:23,837 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:23,837 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:39:23,845 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:39:23,845 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:39:23" (1/1) ... [2023-11-23 22:39:23,847 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a5b433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:23, skipping insertion in model container [2023-11-23 22:39:23,847 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:39:23" (1/1) ... [2023-11-23 22:39:23,946 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:39:25,882 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:25,929 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:39:26,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:39:26,368 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,368 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,368 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,369 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,369 WARN L675 CHandler]: The function clearerr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,369 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,369 WARN L675 CHandler]: The function fclose is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,369 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,369 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,370 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,370 WARN L675 CHandler]: The function strcspn is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,370 WARN L675 CHandler]: The function fgetc is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:39:26,378 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:39:26,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26 WrapperNode [2023-11-23 22:39:26,379 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:39:26,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:26,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:39:26,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:39:26,388 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,478 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,582 INFO L138 Inliner]: procedures = 591, calls = 644, calls flagged for inlining = 37, calls inlined = 36, statements flattened = 2519 [2023-11-23 22:39:26,583 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:39:26,584 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:39:26,584 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:39:26,584 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:39:26,597 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,617 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,656 WARN L107 HeapSplitter]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-23 22:39:26,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,657 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,737 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,757 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,787 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,823 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:39:26,824 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:39:26,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:39:26,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:39:26,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (1/1) ... [2023-11-23 22:39:26,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:39:26,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:26,863 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:39:26,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:39:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure getopt32 [2023-11-23 22:39:26,907 INFO L138 BoogieDeclarations]: Found implementation of procedure getopt32 [2023-11-23 22:39:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-23 22:39:26,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-23 22:39:26,908 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-23 22:39:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-23 22:39:26,908 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-23 22:39:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-23 22:39:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-23 22:39:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:39:26,908 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2023-11-23 22:39:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-23 22:39:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-23 22:39:26,909 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-23 22:39:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2023-11-23 22:39:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-23 22:39:26,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 22:39:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:39:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-23 22:39:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-23 22:39:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:39:26,910 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 22:39:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:39:26,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:39:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-23 22:39:26,911 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-23 22:39:26,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-23 22:39:26,911 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-23 22:39:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-23 22:39:26,912 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-23 22:39:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-23 22:39:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-23 22:39:26,912 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-23 22:39:26,912 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-23 22:39:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-23 22:39:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-23 22:39:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-23 22:39:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-23 22:39:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-23 22:39:26,913 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 22:39:26,913 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 22:39:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:39:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 22:39:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-23 22:39:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 22:39:26,914 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2023-11-23 22:39:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure xatou_range [2023-11-23 22:39:26,915 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou_range [2023-11-23 22:39:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure unicode_strwidth [2023-11-23 22:39:26,915 INFO L138 BoogieDeclarations]: Found implementation of procedure unicode_strwidth [2023-11-23 22:39:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 22:39:26,915 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc_fgets [2023-11-23 22:39:26,916 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc_fgets [2023-11-23 22:39:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure strcspn [2023-11-23 22:39:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-23 22:39:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-23 22:39:26,916 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-23 22:39:26,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 22:39:27,462 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:39:27,466 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:39:29,757 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:39:29,856 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:39:29,856 INFO L309 CfgBuilder]: Removed 45 assume(true) statements. [2023-11-23 22:39:29,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:29 BoogieIcfgContainer [2023-11-23 22:39:29,857 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:39:29,860 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:39:29,860 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:39:29,863 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:39:29,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:39:23" (1/3) ... [2023-11-23 22:39:29,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5418ac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:29, skipping insertion in model container [2023-11-23 22:39:29,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:39:26" (2/3) ... [2023-11-23 22:39:29,865 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5418ac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:39:29, skipping insertion in model container [2023-11-23 22:39:29,865 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:39:29" (3/3) ... [2023-11-23 22:39:29,866 INFO L112 eAbstractionObserver]: Analyzing ICFG expand-2.i [2023-11-23 22:39:29,886 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:39:29,886 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 76 error locations. [2023-11-23 22:39:29,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:39:29,962 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;@597768c2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:39:29,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-11-23 22:39:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand has 712 states, 577 states have (on average 1.7244367417677644) internal successors, (995), 656 states have internal predecessors, (995), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2023-11-23 22:39:29,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-23 22:39:29,978 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:29,978 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-23 22:39:29,979 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:29,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:29,984 INFO L85 PathProgramCache]: Analyzing trace with hash 2538358, now seen corresponding path program 1 times [2023-11-23 22:39:29,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:29,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892523030] [2023-11-23 22:39:29,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:29,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:30,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:30,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:30,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:30,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892523030] [2023-11-23 22:39:30,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892523030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:30,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:30,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:39:30,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140301468] [2023-11-23 22:39:30,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:30,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:30,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:30,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:30,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:30,643 INFO L87 Difference]: Start difference. First operand has 712 states, 577 states have (on average 1.7244367417677644) internal successors, (995), 656 states have internal predecessors, (995), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) 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) [2023-11-23 22:39:31,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:31,012 INFO L93 Difference]: Finished difference Result 1413 states and 2192 transitions. [2023-11-23 22:39:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:31,017 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 [2023-11-23 22:39:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:31,042 INFO L225 Difference]: With dead ends: 1413 [2023-11-23 22:39:31,043 INFO L226 Difference]: Without dead ends: 696 [2023-11-23 22:39:31,059 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 [2023-11-23 22:39:31,063 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 1 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:31,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1912 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:39:31,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-11-23 22:39:31,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 696. [2023-11-23 22:39:31,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 567 states have (on average 1.6102292768959436) internal successors, (913), 649 states have internal predecessors, (913), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:31,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 987 transitions. [2023-11-23 22:39:31,208 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 987 transitions. Word has length 3 [2023-11-23 22:39:31,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:31,209 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 987 transitions. [2023-11-23 22:39:31,209 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) [2023-11-23 22:39:31,212 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 987 transitions. [2023-11-23 22:39:31,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 22:39:31,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:31,213 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 22:39:31,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:39:31,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:31,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:31,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1687323453, now seen corresponding path program 1 times [2023-11-23 22:39:31,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:31,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978332907] [2023-11-23 22:39:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:31,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:31,516 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:31,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:31,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978332907] [2023-11-23 22:39:31,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978332907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:31,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462147253] [2023-11-23 22:39:31,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:31,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:31,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:31,520 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:31,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:39:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:31,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:39:31,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:31,966 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:31,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:39:31,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462147253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:31,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:39:31,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-23 22:39:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515186296] [2023-11-23 22:39:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:31,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:39:31,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:31,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:39:31,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:31,971 INFO L87 Difference]: Start difference. First operand 696 states and 987 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) [2023-11-23 22:39:32,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:32,212 INFO L93 Difference]: Finished difference Result 696 states and 987 transitions. [2023-11-23 22:39:32,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:39:32,213 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 [2023-11-23 22:39:32,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:32,219 INFO L225 Difference]: With dead ends: 696 [2023-11-23 22:39:32,220 INFO L226 Difference]: Without dead ends: 695 [2023-11-23 22:39:32,221 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 [2023-11-23 22:39:32,222 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 3 mSDsluCounter, 1886 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:32,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 2830 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:39:32,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2023-11-23 22:39:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2023-11-23 22:39:32,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 567 states have (on average 1.6084656084656084) internal successors, (912), 648 states have internal predecessors, (912), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 986 transitions. [2023-11-23 22:39:32,256 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 986 transitions. Word has length 6 [2023-11-23 22:39:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:32,257 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 986 transitions. [2023-11-23 22:39:32,257 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) [2023-11-23 22:39:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 986 transitions. [2023-11-23 22:39:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 22:39:32,258 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:32,258 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 22:39:32,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:32,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:32,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:32,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:32,473 INFO L85 PathProgramCache]: Analyzing trace with hash -767417613, now seen corresponding path program 1 times [2023-11-23 22:39:32,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:32,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189081551] [2023-11-23 22:39:32,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:32,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:32,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:32,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:39:32,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:32,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189081551] [2023-11-23 22:39:32,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189081551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:32,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:32,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:39:32,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280920233] [2023-11-23 22:39:32,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:32,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:32,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:32,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:32,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:32,700 INFO L87 Difference]: Start difference. First operand 695 states and 986 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) [2023-11-23 22:39:32,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:32,884 INFO L93 Difference]: Finished difference Result 695 states and 986 transitions. [2023-11-23 22:39:32,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:32,886 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 [2023-11-23 22:39:32,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:32,893 INFO L225 Difference]: With dead ends: 695 [2023-11-23 22:39:32,893 INFO L226 Difference]: Without dead ends: 694 [2023-11-23 22:39:32,897 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 [2023-11-23 22:39:32,904 INFO L413 NwaCegarLoop]: 945 mSDtfsCounter, 0 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1888 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:32,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1888 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:39:32,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2023-11-23 22:39:32,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 692. [2023-11-23 22:39:32,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 565 states have (on average 1.608849557522124) internal successors, (909), 645 states have internal predecessors, (909), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 983 transitions. [2023-11-23 22:39:32,948 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 983 transitions. Word has length 7 [2023-11-23 22:39:32,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:32,949 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 983 transitions. [2023-11-23 22:39:32,949 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) [2023-11-23 22:39:32,949 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 983 transitions. [2023-11-23 22:39:32,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 22:39:32,950 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:32,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:32,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:39:32,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:32,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash -474051737, now seen corresponding path program 1 times [2023-11-23 22:39:32,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:32,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680908779] [2023-11-23 22:39:32,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:32,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:33,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:39:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:33,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:33,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680908779] [2023-11-23 22:39:33,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680908779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:33,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665132845] [2023-11-23 22:39:33,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:33,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:33,198 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:33,199 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:33,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:39:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:33,584 INFO L262 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-23 22:39:33,586 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:39:33,602 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:39:33,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665132845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:33,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:39:33,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-23 22:39:33,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713657825] [2023-11-23 22:39:33,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:33,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:33,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:33,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:33,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:33,605 INFO L87 Difference]: Start difference. First operand 692 states and 983 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) [2023-11-23 22:39:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:33,800 INFO L93 Difference]: Finished difference Result 692 states and 983 transitions. [2023-11-23 22:39:33,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:33,801 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 [2023-11-23 22:39:33,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:33,806 INFO L225 Difference]: With dead ends: 692 [2023-11-23 22:39:33,806 INFO L226 Difference]: Without dead ends: 690 [2023-11-23 22:39:33,807 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 [2023-11-23 22:39:33,808 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 157 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 1717 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:33,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 1717 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:39:33,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2023-11-23 22:39:33,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 690. [2023-11-23 22:39:33,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 565 states have (on average 1.6053097345132743) internal successors, (907), 643 states have internal predecessors, (907), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:33,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 981 transitions. [2023-11-23 22:39:33,838 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 981 transitions. Word has length 12 [2023-11-23 22:39:33,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:33,839 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 981 transitions. [2023-11-23 22:39:33,839 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) [2023-11-23 22:39:33,839 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 981 transitions. [2023-11-23 22:39:33,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 22:39:33,840 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:33,840 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:33,873 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:34,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:34,074 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:34,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:34,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1810700072, now seen corresponding path program 1 times [2023-11-23 22:39:34,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:34,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196323234] [2023-11-23 22:39:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:34,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-23 22:39:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:34,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:34,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196323234] [2023-11-23 22:39:34,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196323234] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:34,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1490522832] [2023-11-23 22:39:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:34,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:34,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:34,328 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:34,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:39:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:34,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:39:34,691 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:34,715 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:34,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:34,766 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:34,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1490522832] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:34,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:39:34,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-23 22:39:34,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409926845] [2023-11-23 22:39:34,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:34,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:34,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:34,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:34,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:34,771 INFO L87 Difference]: Start difference. First operand 690 states and 981 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) [2023-11-23 22:39:35,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:35,123 INFO L93 Difference]: Finished difference Result 1384 states and 1968 transitions. [2023-11-23 22:39:35,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:35,124 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 [2023-11-23 22:39:35,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:35,130 INFO L225 Difference]: With dead ends: 1384 [2023-11-23 22:39:35,131 INFO L226 Difference]: Without dead ends: 699 [2023-11-23 22:39:35,134 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 [2023-11-23 22:39:35,135 INFO L413 NwaCegarLoop]: 943 mSDtfsCounter, 4 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4707 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:35,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4707 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:39:35,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2023-11-23 22:39:35,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2023-11-23 22:39:35,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 574 states have (on average 1.5958188153310104) internal successors, (916), 652 states have internal predecessors, (916), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:35,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 990 transitions. [2023-11-23 22:39:35,169 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 990 transitions. Word has length 13 [2023-11-23 22:39:35,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:35,169 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 990 transitions. [2023-11-23 22:39:35,170 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) [2023-11-23 22:39:35,170 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 990 transitions. [2023-11-23 22:39:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 22:39:35,171 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:35,171 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:35,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:35,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:35,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:35,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:35,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1319945979, now seen corresponding path program 2 times [2023-11-23 22:39:35,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:35,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32977649] [2023-11-23 22:39:35,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:35,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:35,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:35,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:35,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:35,906 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:39:35,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:35,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32977649] [2023-11-23 22:39:35,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32977649] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:35,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353518056] [2023-11-23 22:39:35,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:39:35,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:35,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:35,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:35,928 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:39:36,263 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:39:36,264 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:39:36,266 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:39:36,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:36,321 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:39:36,321 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:39:36,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353518056] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:36,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:39:36,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-23 22:39:36,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374696897] [2023-11-23 22:39:36,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:36,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:39:36,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:36,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:39:36,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:39:36,325 INFO L87 Difference]: Start difference. First operand 699 states and 990 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) [2023-11-23 22:39:36,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:36,650 INFO L93 Difference]: Finished difference Result 699 states and 990 transitions. [2023-11-23 22:39:36,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:39:36,651 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 [2023-11-23 22:39:36,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:36,657 INFO L225 Difference]: With dead ends: 699 [2023-11-23 22:39:36,657 INFO L226 Difference]: Without dead ends: 697 [2023-11-23 22:39:36,658 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 [2023-11-23 22:39:36,659 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 156 mSDsluCounter, 2627 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:36,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 3558 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:39:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2023-11-23 22:39:36,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2023-11-23 22:39:36,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 574 states have (on average 1.5923344947735192) internal successors, (914), 650 states have internal predecessors, (914), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:36,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 988 transitions. [2023-11-23 22:39:36,689 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 988 transitions. Word has length 22 [2023-11-23 22:39:36,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:36,689 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 988 transitions. [2023-11-23 22:39:36,690 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) [2023-11-23 22:39:36,690 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 988 transitions. [2023-11-23 22:39:36,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-23 22:39:36,691 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:36,691 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:36,715 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:36,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:36,905 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:36,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:36,905 INFO L85 PathProgramCache]: Analyzing trace with hash -490442297, now seen corresponding path program 1 times [2023-11-23 22:39:36,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:36,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808997481] [2023-11-23 22:39:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:37,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:37,111 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:39:37,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:37,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808997481] [2023-11-23 22:39:37,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808997481] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:37,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:37,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:39:37,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679410402] [2023-11-23 22:39:37,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:37,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:37,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:37,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:37,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:37,114 INFO L87 Difference]: Start difference. First operand 697 states and 988 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) [2023-11-23 22:39:37,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:37,295 INFO L93 Difference]: Finished difference Result 1377 states and 1960 transitions. [2023-11-23 22:39:37,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:37,296 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 [2023-11-23 22:39:37,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:37,301 INFO L225 Difference]: With dead ends: 1377 [2023-11-23 22:39:37,301 INFO L226 Difference]: Without dead ends: 700 [2023-11-23 22:39:37,304 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 [2023-11-23 22:39:37,305 INFO L413 NwaCegarLoop]: 941 mSDtfsCounter, 1 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:37,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1877 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:39:37,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2023-11-23 22:39:37,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 700. [2023-11-23 22:39:37,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 577 states have (on average 1.5892547660311958) internal successors, (917), 653 states have internal predecessors, (917), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:37,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 991 transitions. [2023-11-23 22:39:37,334 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 991 transitions. Word has length 27 [2023-11-23 22:39:37,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:37,334 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 991 transitions. [2023-11-23 22:39:37,335 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) [2023-11-23 22:39:37,335 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 991 transitions. [2023-11-23 22:39:37,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-23 22:39:37,336 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:37,336 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] [2023-11-23 22:39:37,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 22:39:37,336 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:37,337 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:37,337 INFO L85 PathProgramCache]: Analyzing trace with hash 714169524, now seen corresponding path program 1 times [2023-11-23 22:39:37,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:37,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120113316] [2023-11-23 22:39:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:37,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:37,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:39:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:37,600 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:39:37,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:37,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120113316] [2023-11-23 22:39:37,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120113316] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:37,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491556741] [2023-11-23 22:39:37,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:37,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:37,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:37,605 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:37,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:39:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:38,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 733 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:39:38,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:39:38,107 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:38,213 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:39:38,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491556741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:38,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:39:38,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-23 22:39:38,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461017150] [2023-11-23 22:39:38,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:38,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:39:38,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:38,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:39:38,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:39:38,216 INFO L87 Difference]: Start difference. First operand 700 states and 991 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) [2023-11-23 22:39:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:38,721 INFO L93 Difference]: Finished difference Result 1403 states and 1991 transitions. [2023-11-23 22:39:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:39:38,722 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 [2023-11-23 22:39:38,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:38,728 INFO L225 Difference]: With dead ends: 1403 [2023-11-23 22:39:38,729 INFO L226 Difference]: Without dead ends: 717 [2023-11-23 22:39:38,732 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 [2023-11-23 22:39:38,733 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 7 mSDsluCounter, 5598 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 6533 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:38,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 6533 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:39:38,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 717 states. [2023-11-23 22:39:38,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 717 to 717. [2023-11-23 22:39:38,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 717 states, 595 states have (on average 1.5697478991596638) internal successors, (934), 670 states have internal predecessors, (934), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:38,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 717 states to 717 states and 1008 transitions. [2023-11-23 22:39:38,769 INFO L78 Accepts]: Start accepts. Automaton has 717 states and 1008 transitions. Word has length 30 [2023-11-23 22:39:38,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:38,769 INFO L495 AbstractCegarLoop]: Abstraction has 717 states and 1008 transitions. [2023-11-23 22:39:38,769 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) [2023-11-23 22:39:38,770 INFO L276 IsEmpty]: Start isEmpty. Operand 717 states and 1008 transitions. [2023-11-23 22:39:38,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 22:39:38,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:38,774 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] [2023-11-23 22:39:38,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:38,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:38,989 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:38,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:38,989 INFO L85 PathProgramCache]: Analyzing trace with hash 472233251, now seen corresponding path program 1 times [2023-11-23 22:39:38,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:38,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639760211] [2023-11-23 22:39:38,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:38,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:39,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:39,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:39,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:39,330 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 22:39:39,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:39,330 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639760211] [2023-11-23 22:39:39,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639760211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:39,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:39,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:39:39,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735603705] [2023-11-23 22:39:39,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:39,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:39,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:39,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:39,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:39,336 INFO L87 Difference]: Start difference. First operand 717 states and 1008 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) [2023-11-23 22:39:39,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:39,567 INFO L93 Difference]: Finished difference Result 731 states and 1024 transitions. [2023-11-23 22:39:39,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:39,568 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 [2023-11-23 22:39:39,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:39,578 INFO L225 Difference]: With dead ends: 731 [2023-11-23 22:39:39,578 INFO L226 Difference]: Without dead ends: 729 [2023-11-23 22:39:39,579 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 [2023-11-23 22:39:39,581 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 3 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:39,581 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1872 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:39:39,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-11-23 22:39:39,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 727. [2023-11-23 22:39:39,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 727 states, 605 states have (on average 1.5652892561983471) internal successors, (947), 680 states have internal predecessors, (947), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:39,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 727 states to 727 states and 1021 transitions. [2023-11-23 22:39:39,623 INFO L78 Accepts]: Start accepts. Automaton has 727 states and 1021 transitions. Word has length 49 [2023-11-23 22:39:39,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:39,624 INFO L495 AbstractCegarLoop]: Abstraction has 727 states and 1021 transitions. [2023-11-23 22:39:39,624 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) [2023-11-23 22:39:39,625 INFO L276 IsEmpty]: Start isEmpty. Operand 727 states and 1021 transitions. [2023-11-23 22:39:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 22:39:39,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:39,628 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] [2023-11-23 22:39:39,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:39:39,629 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:39,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:39,631 INFO L85 PathProgramCache]: Analyzing trace with hash 472234980, now seen corresponding path program 1 times [2023-11-23 22:39:39,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:39,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431319289] [2023-11-23 22:39:39,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:39,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:39,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:39,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:39,862 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-23 22:39:39,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:39,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431319289] [2023-11-23 22:39:39,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431319289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:39,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:39,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:39:39,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122045381] [2023-11-23 22:39:39,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:39,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:39,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:39,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:39,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:39,867 INFO L87 Difference]: Start difference. First operand 727 states and 1021 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) [2023-11-23 22:39:40,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:40,065 INFO L93 Difference]: Finished difference Result 727 states and 1021 transitions. [2023-11-23 22:39:40,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:40,066 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 [2023-11-23 22:39:40,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:40,071 INFO L225 Difference]: With dead ends: 727 [2023-11-23 22:39:40,071 INFO L226 Difference]: Without dead ends: 726 [2023-11-23 22:39:40,071 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 [2023-11-23 22:39:40,072 INFO L413 NwaCegarLoop]: 939 mSDtfsCounter, 0 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:40,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1875 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:39:40,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2023-11-23 22:39:40,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 722. [2023-11-23 22:39:40,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 722 states, 601 states have (on average 1.5657237936772046) internal successors, (941), 675 states have internal predecessors, (941), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:40,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 722 states to 722 states and 1015 transitions. [2023-11-23 22:39:40,106 INFO L78 Accepts]: Start accepts. Automaton has 722 states and 1015 transitions. Word has length 49 [2023-11-23 22:39:40,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:40,106 INFO L495 AbstractCegarLoop]: Abstraction has 722 states and 1015 transitions. [2023-11-23 22:39:40,107 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) [2023-11-23 22:39:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 722 states and 1015 transitions. [2023-11-23 22:39:40,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 22:39:40,109 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:40,109 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] [2023-11-23 22:39:40,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:39:40,109 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting getopt32Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:40,110 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:40,110 INFO L85 PathProgramCache]: Analyzing trace with hash 193785555, now seen corresponding path program 1 times [2023-11-23 22:39:40,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:40,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647015429] [2023-11-23 22:39:40,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:40,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:40,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,389 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:40,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:40,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647015429] [2023-11-23 22:39:40,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647015429] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:40,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:40,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:39:40,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490175303] [2023-11-23 22:39:40,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:40,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:39:40,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:40,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:39:40,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:39:40,392 INFO L87 Difference]: Start difference. First operand 722 states and 1015 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:40,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:40,591 INFO L93 Difference]: Finished difference Result 970 states and 1390 transitions. [2023-11-23 22:39:40,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:39:40,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-11-23 22:39:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:40,600 INFO L225 Difference]: With dead ends: 970 [2023-11-23 22:39:40,600 INFO L226 Difference]: Without dead ends: 968 [2023-11-23 22:39:40,601 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 [2023-11-23 22:39:40,602 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 350 mSDsluCounter, 927 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1861 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:40,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1861 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 22:39:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-23 22:39:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 726. [2023-11-23 22:39:40,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 605 states have (on average 1.5636363636363637) internal successors, (946), 679 states have internal predecessors, (946), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 1020 transitions. [2023-11-23 22:39:40,635 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 1020 transitions. Word has length 52 [2023-11-23 22:39:40,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:40,635 INFO L495 AbstractCegarLoop]: Abstraction has 726 states and 1020 transitions. [2023-11-23 22:39:40,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:40,636 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 1020 transitions. [2023-11-23 22:39:40,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 22:39:40,637 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:40,637 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:40,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 22:39:40,637 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting getopt32Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:40,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:40,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1944164884, now seen corresponding path program 1 times [2023-11-23 22:39:40,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:40,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116403039] [2023-11-23 22:39:40,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:40,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:40,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:40,884 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:40,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:40,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116403039] [2023-11-23 22:39:40,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116403039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:40,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957673848] [2023-11-23 22:39:40,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:40,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:40,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:40,887 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:40,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:39:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:41,396 INFO L262 TraceCheckSpWp]: Trace formula consists of 936 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:39:41,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:41,422 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:41,422 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:39:41,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957673848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:41,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:39:41,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-23 22:39:41,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555099723] [2023-11-23 22:39:41,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:41,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:39:41,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:41,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:39:41,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:41,425 INFO L87 Difference]: Start difference. First operand 726 states and 1020 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:41,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:41,776 INFO L93 Difference]: Finished difference Result 972 states and 1394 transitions. [2023-11-23 22:39:41,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:39:41,777 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 56 [2023-11-23 22:39:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:41,783 INFO L225 Difference]: With dead ends: 972 [2023-11-23 22:39:41,784 INFO L226 Difference]: Without dead ends: 971 [2023-11-23 22:39:41,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:41,785 INFO L413 NwaCegarLoop]: 1287 mSDtfsCounter, 700 mSDsluCounter, 1527 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2814 SdHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:41,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2814 Invalid, 147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:39:41,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2023-11-23 22:39:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 725. [2023-11-23 22:39:41,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 605 states have (on average 1.56198347107438) internal successors, (945), 678 states have internal predecessors, (945), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:41,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1019 transitions. [2023-11-23 22:39:41,823 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1019 transitions. Word has length 56 [2023-11-23 22:39:41,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:41,823 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1019 transitions. [2023-11-23 22:39:41,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:41,824 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1019 transitions. [2023-11-23 22:39:41,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 22:39:41,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:41,825 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:41,852 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:42,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:42,039 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting getopt32Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:42,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:42,039 INFO L85 PathProgramCache]: Analyzing trace with hash -139568657, now seen corresponding path program 1 times [2023-11-23 22:39:42,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:42,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291524653] [2023-11-23 22:39:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:42,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:42,408 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:42,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:42,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291524653] [2023-11-23 22:39:42,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291524653] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:42,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436441547] [2023-11-23 22:39:42,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:42,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:42,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:42,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:42,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:39:42,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:42,937 INFO L262 TraceCheckSpWp]: Trace formula consists of 937 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:39:42,940 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:42,968 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:42,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:43,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436441547] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:43,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:39:43,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-23 22:39:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951331182] [2023-11-23 22:39:43,002 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:43,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:43,004 INFO L87 Difference]: Start difference. First operand 725 states and 1019 transitions. Second operand has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:43,475 INFO L93 Difference]: Finished difference Result 1706 states and 2509 transitions. [2023-11-23 22:39:43,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:43,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-11-23 22:39:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:43,488 INFO L225 Difference]: With dead ends: 1706 [2023-11-23 22:39:43,488 INFO L226 Difference]: Without dead ends: 1705 [2023-11-23 22:39:43,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:43,491 INFO L413 NwaCegarLoop]: 933 mSDtfsCounter, 2125 mSDsluCounter, 2582 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:43,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 3515 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:39:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1705 states. [2023-11-23 22:39:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 737. [2023-11-23 22:39:43,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 617 states have (on average 1.5559157212317667) internal successors, (960), 690 states have internal predecessors, (960), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:43,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1034 transitions. [2023-11-23 22:39:43,539 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1034 transitions. Word has length 57 [2023-11-23 22:39:43,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:43,539 INFO L495 AbstractCegarLoop]: Abstraction has 737 states and 1034 transitions. [2023-11-23 22:39:43,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.833333333333333) internal successors, (41), 7 states have internal predecessors, (41), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:43,540 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1034 transitions. [2023-11-23 22:39:43,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-23 22:39:43,541 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:43,542 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] [2023-11-23 22:39:43,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:43,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:43,769 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:43,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:43,769 INFO L85 PathProgramCache]: Analyzing trace with hash -631886900, now seen corresponding path program 1 times [2023-11-23 22:39:43,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:43,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448711353] [2023-11-23 22:39:43,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:43,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:44,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:44,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:44,114 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 22:39:44,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:44,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448711353] [2023-11-23 22:39:44,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448711353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:44,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1056230393] [2023-11-23 22:39:44,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:44,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:44,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:44,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:44,156 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 22:39:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:44,641 INFO L262 TraceCheckSpWp]: Trace formula consists of 904 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 22:39:44,644 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 22:39:44,660 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-23 22:39:44,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1056230393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:44,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:39:44,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-23 22:39:44,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215380612] [2023-11-23 22:39:44,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:44,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:39:44,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:44,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:39:44,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:39:44,686 INFO L87 Difference]: Start difference. First operand 737 states and 1034 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) [2023-11-23 22:39:44,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:44,999 INFO L93 Difference]: Finished difference Result 1449 states and 2045 transitions. [2023-11-23 22:39:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:45,000 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 [2023-11-23 22:39:45,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:45,005 INFO L225 Difference]: With dead ends: 1449 [2023-11-23 22:39:45,005 INFO L226 Difference]: Without dead ends: 755 [2023-11-23 22:39:45,008 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 [2023-11-23 22:39:45,009 INFO L413 NwaCegarLoop]: 938 mSDtfsCounter, 4 mSDsluCounter, 2805 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3743 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:45,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 3743 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 22:39:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2023-11-23 22:39:45,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 755. [2023-11-23 22:39:45,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 755 states, 635 states have (on average 1.5401574803149607) internal successors, (978), 708 states have internal predecessors, (978), 41 states have call successors, (41), 14 states have call predecessors, (41), 12 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2023-11-23 22:39:45,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 755 states to 755 states and 1052 transitions. [2023-11-23 22:39:45,040 INFO L78 Accepts]: Start accepts. Automaton has 755 states and 1052 transitions. Word has length 57 [2023-11-23 22:39:45,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:45,040 INFO L495 AbstractCegarLoop]: Abstraction has 755 states and 1052 transitions. [2023-11-23 22:39:45,041 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) [2023-11-23 22:39:45,041 INFO L276 IsEmpty]: Start isEmpty. Operand 755 states and 1052 transitions. [2023-11-23 22:39:45,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 22:39:45,042 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:45,042 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:45,071 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:45,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 22:39:45,258 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting getopt32Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:45,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:45,259 INFO L85 PathProgramCache]: Analyzing trace with hash 231011900, now seen corresponding path program 1 times [2023-11-23 22:39:45,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:45,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375739648] [2023-11-23 22:39:45,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:45,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:45,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:45,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:45,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 22:39:45,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:45,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:45,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375739648] [2023-11-23 22:39:45,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375739648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:45,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:45,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:39:45,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644665837] [2023-11-23 22:39:45,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:45,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:39:45,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:45,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:39:45,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:39:45,550 INFO L87 Difference]: Start difference. First operand 755 states and 1052 transitions. Second operand has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:39:46,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:46,948 INFO L93 Difference]: Finished difference Result 1783 states and 2574 transitions. [2023-11-23 22:39:46,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:39:46,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 65 [2023-11-23 22:39:46,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:46,958 INFO L225 Difference]: With dead ends: 1783 [2023-11-23 22:39:46,958 INFO L226 Difference]: Without dead ends: 1151 [2023-11-23 22:39:46,961 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 [2023-11-23 22:39:46,962 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 676 mSDsluCounter, 1459 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 2338 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:46,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [682 Valid, 2338 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 22:39:46,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2023-11-23 22:39:47,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 795. [2023-11-23 22:39:47,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 674 states have (on average 1.5311572700296736) internal successors, (1032), 747 states have internal predecessors, (1032), 42 states have call successors, (42), 14 states have call predecessors, (42), 12 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 22:39:47,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1108 transitions. [2023-11-23 22:39:47,017 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1108 transitions. Word has length 65 [2023-11-23 22:39:47,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:47,018 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1108 transitions. [2023-11-23 22:39:47,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:39:47,019 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1108 transitions. [2023-11-23 22:39:47,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-23 22:39:47,020 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:47,020 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:47,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-23 22:39:47,021 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting getopt32Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:47,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:47,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1308087613, now seen corresponding path program 1 times [2023-11-23 22:39:47,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:47,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723177330] [2023-11-23 22:39:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:47,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:47,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-23 22:39:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:47,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:47,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723177330] [2023-11-23 22:39:47,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723177330] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:47,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:47,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:39:47,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825564810] [2023-11-23 22:39:47,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:47,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:39:47,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:47,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:39:47,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:39:47,286 INFO L87 Difference]: Start difference. First operand 795 states and 1108 transitions. Second operand has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:39:48,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:48,433 INFO L93 Difference]: Finished difference Result 1051 states and 1509 transitions. [2023-11-23 22:39:48,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:39:48,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2023-11-23 22:39:48,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:48,441 INFO L225 Difference]: With dead ends: 1051 [2023-11-23 22:39:48,441 INFO L226 Difference]: Without dead ends: 1049 [2023-11-23 22:39:48,442 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 [2023-11-23 22:39:48,443 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 420 mSDsluCounter, 1497 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:48,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 2380 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-23 22:39:48,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1049 states. [2023-11-23 22:39:48,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1049 to 795. [2023-11-23 22:39:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 674 states have (on average 1.5281899109792285) internal successors, (1030), 747 states have internal predecessors, (1030), 42 states have call successors, (42), 14 states have call predecessors, (42), 12 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 22:39:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1106 transitions. [2023-11-23 22:39:48,487 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1106 transitions. Word has length 67 [2023-11-23 22:39:48,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:48,488 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1106 transitions. [2023-11-23 22:39:48,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:39:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1106 transitions. [2023-11-23 22:39:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 22:39:48,490 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:48,490 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:48,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-23 22:39:48,490 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting getopt32Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:48,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:48,491 INFO L85 PathProgramCache]: Analyzing trace with hash -791054076, now seen corresponding path program 2 times [2023-11-23 22:39:48,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:48,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157293580] [2023-11-23 22:39:48,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:48,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:48,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:48,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-23 22:39:48,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:48,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157293580] [2023-11-23 22:39:48,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157293580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:48,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981394958] [2023-11-23 22:39:48,921 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:39:48,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:48,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:48,922 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:48,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 22:39:49,421 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:39:49,421 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:39:49,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 738 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 22:39:49,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:49,514 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-23 22:39:49,515 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:39:49,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981394958] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:49,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:39:49,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-23 22:39:49,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089575553] [2023-11-23 22:39:49,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:49,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:39:49,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:49,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:39:49,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:39:49,517 INFO L87 Difference]: Start difference. First operand 795 states and 1106 transitions. Second operand has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:49,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:49,956 INFO L93 Difference]: Finished difference Result 1516 states and 2132 transitions. [2023-11-23 22:39:49,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:49,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 69 [2023-11-23 22:39:49,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:49,963 INFO L225 Difference]: With dead ends: 1516 [2023-11-23 22:39:49,963 INFO L226 Difference]: Without dead ends: 795 [2023-11-23 22:39:49,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:39:49,967 INFO L413 NwaCegarLoop]: 925 mSDtfsCounter, 166 mSDsluCounter, 2751 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:49,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 3676 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:39:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2023-11-23 22:39:49,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 795. [2023-11-23 22:39:49,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 795 states, 674 states have (on average 1.5267062314540059) internal successors, (1029), 747 states have internal predecessors, (1029), 42 states have call successors, (42), 14 states have call predecessors, (42), 12 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 22:39:50,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795 states to 795 states and 1105 transitions. [2023-11-23 22:39:50,003 INFO L78 Accepts]: Start accepts. Automaton has 795 states and 1105 transitions. Word has length 69 [2023-11-23 22:39:50,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:50,003 INFO L495 AbstractCegarLoop]: Abstraction has 795 states and 1105 transitions. [2023-11-23 22:39:50,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:50,004 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states and 1105 transitions. [2023-11-23 22:39:50,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-23 22:39:50,004 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:50,005 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] [2023-11-23 22:39:50,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:50,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-23 22:39:50,225 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:50,225 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash -759631814, now seen corresponding path program 2 times [2023-11-23 22:39:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:50,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744338920] [2023-11-23 22:39:50,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:50,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:50,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:50,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:50,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:50,649 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-23 22:39:50,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744338920] [2023-11-23 22:39:50,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744338920] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:50,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226937888] [2023-11-23 22:39:50,650 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:39:50,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:50,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:50,652 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:50,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 22:39:51,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:39:51,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:39:51,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 1018 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:39:51,388 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:51,453 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-23 22:39:51,454 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:51,555 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-23 22:39:51,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226937888] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:51,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:39:51,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-23 22:39:51,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551671658] [2023-11-23 22:39:51,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:51,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:39:51,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:51,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:39:51,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:39:51,558 INFO L87 Difference]: Start difference. First operand 795 states and 1105 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) [2023-11-23 22:39:52,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:52,260 INFO L93 Difference]: Finished difference Result 1573 states and 2203 transitions. [2023-11-23 22:39:52,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-23 22:39:52,261 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 [2023-11-23 22:39:52,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:52,267 INFO L225 Difference]: With dead ends: 1573 [2023-11-23 22:39:52,267 INFO L226 Difference]: Without dead ends: 830 [2023-11-23 22:39:52,270 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 [2023-11-23 22:39:52,271 INFO L413 NwaCegarLoop]: 934 mSDtfsCounter, 11 mSDsluCounter, 4650 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 5584 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:52,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 5584 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:39:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2023-11-23 22:39:52,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 830. [2023-11-23 22:39:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 710 states have (on average 1.4985915492957746) internal successors, (1064), 782 states have internal predecessors, (1064), 42 states have call successors, (42), 14 states have call predecessors, (42), 12 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 22:39:52,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1140 transitions. [2023-11-23 22:39:52,309 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1140 transitions. Word has length 75 [2023-11-23 22:39:52,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:52,309 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 1140 transitions. [2023-11-23 22:39:52,310 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) [2023-11-23 22:39:52,310 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1140 transitions. [2023-11-23 22:39:52,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-23 22:39:52,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:52,311 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:52,340 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:52,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 22:39:52,533 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting getopt32Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:52,533 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:52,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1408693414, now seen corresponding path program 1 times [2023-11-23 22:39:52,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:52,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420413133] [2023-11-23 22:39:52,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:52,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:52,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:52,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-23 22:39:53,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:53,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420413133] [2023-11-23 22:39:53,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420413133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:39:53,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703803810] [2023-11-23 22:39:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:53,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:53,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:39:53,002 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:39:53,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 22:39:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:53,675 INFO L262 TraceCheckSpWp]: Trace formula consists of 1205 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:39:53,679 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:39:53,724 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-23 22:39:53,724 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:39:53,837 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-23 22:39:53,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703803810] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:39:53,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:39:53,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-23 22:39:53,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68033598] [2023-11-23 22:39:53,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:39:53,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 22:39:53,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:53,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 22:39:53,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:39:53,844 INFO L87 Difference]: Start difference. First operand 830 states and 1140 transitions. Second operand has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:54,894 INFO L93 Difference]: Finished difference Result 3675 states and 5396 transitions. [2023-11-23 22:39:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 22:39:54,895 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 104 [2023-11-23 22:39:54,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:54,919 INFO L225 Difference]: With dead ends: 3675 [2023-11-23 22:39:54,919 INFO L226 Difference]: Without dead ends: 3674 [2023-11-23 22:39:54,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:39:54,922 INFO L413 NwaCegarLoop]: 932 mSDtfsCounter, 4550 mSDsluCounter, 7312 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 8244 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:54,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4630 Valid, 8244 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 22:39:54,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2023-11-23 22:39:55,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 854. [2023-11-23 22:39:55,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 734 states have (on average 1.4904632152588555) internal successors, (1094), 806 states have internal predecessors, (1094), 42 states have call successors, (42), 14 states have call predecessors, (42), 12 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 22:39:55,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1170 transitions. [2023-11-23 22:39:55,061 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1170 transitions. Word has length 104 [2023-11-23 22:39:55,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:55,062 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 1170 transitions. [2023-11-23 22:39:55,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.083333333333333) internal successors, (73), 13 states have internal predecessors, (73), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-23 22:39:55,063 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1170 transitions. [2023-11-23 22:39:55,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 22:39:55,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:55,065 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:55,093 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 22:39:55,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:39:55,291 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting getopt32Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:55,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:55,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1668876271, now seen corresponding path program 1 times [2023-11-23 22:39:55,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:55,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770089817] [2023-11-23 22:39:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:55,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:56,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 22:39:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-23 22:39:56,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:56,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770089817] [2023-11-23 22:39:56,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770089817] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:56,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:56,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:39:56,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876540171] [2023-11-23 22:39:56,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:56,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:39:56,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:56,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:39:56,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:56,112 INFO L87 Difference]: Start difference. First operand 854 states and 1170 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:39:57,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:57,424 INFO L93 Difference]: Finished difference Result 1864 states and 2643 transitions. [2023-11-23 22:39:57,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:57,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 109 [2023-11-23 22:39:57,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:57,432 INFO L225 Difference]: With dead ends: 1864 [2023-11-23 22:39:57,432 INFO L226 Difference]: Without dead ends: 1284 [2023-11-23 22:39:57,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:39:57,436 INFO L413 NwaCegarLoop]: 942 mSDtfsCounter, 1776 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1790 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:57,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1790 Valid, 2462 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 22:39:57,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1284 states. [2023-11-23 22:39:57,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1284 to 949. [2023-11-23 22:39:57,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 825 states have (on average 1.4739393939393939) internal successors, (1216), 898 states have internal predecessors, (1216), 45 states have call successors, (45), 16 states have call predecessors, (45), 13 states have return successors, (37), 35 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-23 22:39:57,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1298 transitions. [2023-11-23 22:39:57,501 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1298 transitions. Word has length 109 [2023-11-23 22:39:57,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:57,501 INFO L495 AbstractCegarLoop]: Abstraction has 949 states and 1298 transitions. [2023-11-23 22:39:57,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:39:57,502 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1298 transitions. [2023-11-23 22:39:57,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-23 22:39:57,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:57,506 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:57,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-23 22:39:57,506 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting getopt32Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:57,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:57,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1721809171, now seen corresponding path program 1 times [2023-11-23 22:39:57,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:57,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718493074] [2023-11-23 22:39:57,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:57,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:39:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:58,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 22:39:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:39:58,222 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-23 22:39:58,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:39:58,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718493074] [2023-11-23 22:39:58,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718493074] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:39:58,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:39:58,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:39:58,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618475234] [2023-11-23 22:39:58,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:39:58,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:39:58,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:39:58,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:39:58,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:39:58,226 INFO L87 Difference]: Start difference. First operand 949 states and 1298 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:39:59,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:39:59,615 INFO L93 Difference]: Finished difference Result 1866 states and 2639 transitions. [2023-11-23 22:39:59,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:39:59,616 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 109 [2023-11-23 22:39:59,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:39:59,623 INFO L225 Difference]: With dead ends: 1866 [2023-11-23 22:39:59,623 INFO L226 Difference]: Without dead ends: 1289 [2023-11-23 22:39:59,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:39:59,627 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 1662 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1675 SdHoareTripleChecker+Valid, 2828 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-23 22:39:59,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1675 Valid, 2828 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-23 22:39:59,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1289 states. [2023-11-23 22:39:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 857. [2023-11-23 22:39:59,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 736 states have (on average 1.4877717391304348) internal successors, (1095), 808 states have internal predecessors, (1095), 42 states have call successors, (42), 15 states have call predecessors, (42), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 22:39:59,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1171 transitions. [2023-11-23 22:39:59,685 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1171 transitions. Word has length 109 [2023-11-23 22:39:59,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:39:59,686 INFO L495 AbstractCegarLoop]: Abstraction has 857 states and 1171 transitions. [2023-11-23 22:39:59,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:39:59,686 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1171 transitions. [2023-11-23 22:39:59,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2023-11-23 22:39:59,688 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:39:59,688 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:39:59,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-23 22:39:59,689 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting getopt32Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:39:59,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:39:59,689 INFO L85 PathProgramCache]: Analyzing trace with hash -697991169, now seen corresponding path program 1 times [2023-11-23 22:39:59,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:39:59,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811638603] [2023-11-23 22:39:59,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:39:59,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:39:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:40:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:00,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 22:40:00,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:00,089 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-23 22:40:00,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:00,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811638603] [2023-11-23 22:40:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811638603] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:40:00,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085749204] [2023-11-23 22:40:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:00,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:00,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:40:00,091 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:40:00,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 22:40:00,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:00,802 INFO L262 TraceCheckSpWp]: Trace formula consists of 1299 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:40:00,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:40:00,861 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-23 22:40:00,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:40:00,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085749204] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:40:00,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:40:00,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-23 22:40:00,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415862038] [2023-11-23 22:40:00,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:40:00,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:40:00,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:00,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:40:00,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:40:00,864 INFO L87 Difference]: Start difference. First operand 857 states and 1171 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:40:01,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:01,333 INFO L93 Difference]: Finished difference Result 1562 states and 2192 transitions. [2023-11-23 22:40:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:40:01,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 111 [2023-11-23 22:40:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:01,340 INFO L225 Difference]: With dead ends: 1562 [2023-11-23 22:40:01,341 INFO L226 Difference]: Without dead ends: 913 [2023-11-23 22:40:01,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:40:01,344 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 398 mSDsluCounter, 2392 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 3364 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:01,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 3364 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 22:40:01,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2023-11-23 22:40:01,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 839. [2023-11-23 22:40:01,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 839 states, 727 states have (on average 1.4745529573590097) internal successors, (1072), 790 states have internal predecessors, (1072), 42 states have call successors, (42), 15 states have call predecessors, (42), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 22:40:01,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 839 states to 839 states and 1148 transitions. [2023-11-23 22:40:01,400 INFO L78 Accepts]: Start accepts. Automaton has 839 states and 1148 transitions. Word has length 111 [2023-11-23 22:40:01,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:01,401 INFO L495 AbstractCegarLoop]: Abstraction has 839 states and 1148 transitions. [2023-11-23 22:40:01,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:40:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states and 1148 transitions. [2023-11-23 22:40:01,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 22:40:01,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:01,422 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:01,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 22:40:01,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2c3f5035-83b6-4bfe-9739-3b80f4de3734/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:40:01,637 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting getopt32Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:40:01,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2005713596, now seen corresponding path program 1 times [2023-11-23 22:40:01,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:01,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672050183] [2023-11-23 22:40:01,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:01,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:01,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:40:01,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:01,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 22:40:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:01,916 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-23 22:40:01,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:01,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672050183] [2023-11-23 22:40:01,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672050183] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:40:01,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:40:01,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:40:01,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095055991] [2023-11-23 22:40:01,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:40:01,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:40:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:40:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:40:01,919 INFO L87 Difference]: Start difference. First operand 839 states and 1148 transitions. Second operand has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:40:03,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:40:03,057 INFO L93 Difference]: Finished difference Result 1095 states and 1552 transitions. [2023-11-23 22:40:03,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:40:03,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2023-11-23 22:40:03,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:40:03,065 INFO L225 Difference]: With dead ends: 1095 [2023-11-23 22:40:03,065 INFO L226 Difference]: Without dead ends: 1094 [2023-11-23 22:40:03,066 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 [2023-11-23 22:40:03,067 INFO L413 NwaCegarLoop]: 1118 mSDtfsCounter, 417 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 2840 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:40:03,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 2840 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-23 22:40:03,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-11-23 22:40:03,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 838. [2023-11-23 22:40:03,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 838 states, 727 states have (on average 1.4731774415405776) internal successors, (1071), 789 states have internal predecessors, (1071), 42 states have call successors, (42), 15 states have call predecessors, (42), 13 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 22:40:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1147 transitions. [2023-11-23 22:40:03,126 INFO L78 Accepts]: Start accepts. Automaton has 838 states and 1147 transitions. Word has length 113 [2023-11-23 22:40:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:40:03,127 INFO L495 AbstractCegarLoop]: Abstraction has 838 states and 1147 transitions. [2023-11-23 22:40:03,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-23 22:40:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 838 states and 1147 transitions. [2023-11-23 22:40:03,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2023-11-23 22:40:03,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:40:03,129 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:40:03,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-23 22:40:03,130 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting getopt32Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [unicode_strwidthErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, unicode_strwidthErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-11-23 22:40:03,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:40:03,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1917592181, now seen corresponding path program 1 times [2023-11-23 22:40:03,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:40:03,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569140680] [2023-11-23 22:40:03,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:40:03,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:40:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:03,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-23 22:40:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:03,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-11-23 22:40:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:40:03,902 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2023-11-23 22:40:03,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:40:03,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569140680] [2023-11-23 22:40:03,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569140680] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:40:03,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:40:03,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:40:03,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842086039] [2023-11-23 22:40:03,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:40:03,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:40:03,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:40:03,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:40:03,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:40:03,905 INFO L87 Difference]: Start difference. First operand 838 states and 1147 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2)