./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/stty-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/stty-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme --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 e0ada5a793906a8c21c0c37214d90767529226ee2d6e9139376b7842d17987b9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:49,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:49,680 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 10:48:49,687 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:49,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:49,725 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:49,725 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:49,726 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:49,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:48:49,732 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:48:49,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:49,733 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:49,734 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:49,735 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:49,736 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:49,736 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:49,737 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:49,737 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:49,738 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:49,738 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:49,738 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:49,739 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:49,739 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:48:49,740 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:48:49,740 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:49,741 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:49,741 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:49,742 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:49,742 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:48:49,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:49,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:49,744 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:49,744 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:49,745 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:49,745 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:49,745 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:49,745 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:49,746 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:49,746 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:49,746 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:49,746 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:49,747 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_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e0ada5a793906a8c21c0c37214d90767529226ee2d6e9139376b7842d17987b9 [2023-11-26 10:48:50,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:50,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:50,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:50,038 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:50,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:50,040 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/stty-1.i [2023-11-26 10:48:53,170 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:53,745 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:53,746 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/sv-benchmarks/c/busybox-1.22.0/stty-1.i [2023-11-26 10:48:53,782 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/data/961b78366/ecd6cfb652914738a02913bbb03aa877/FLAG55186d8ac [2023-11-26 10:48:53,799 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/data/961b78366/ecd6cfb652914738a02913bbb03aa877 [2023-11-26 10:48:53,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:53,806 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:53,810 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:53,810 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:53,816 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:53,817 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:53" (1/1) ... [2023-11-26 10:48:53,819 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b636307 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:53, skipping insertion in model container [2023-11-26 10:48:53,819 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:53" (1/1) ... [2023-11-26 10:48:54,038 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:56,600 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:56,671 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:56,962 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:57,304 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,305 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,305 WARN L675 CHandler]: The function strtoull is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,306 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,306 WARN L675 CHandler]: The function output_func is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,310 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,310 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,311 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,312 WARN L675 CHandler]: The function vsnprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,312 WARN L675 CHandler]: The function close is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:57,320 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:57,321 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57 WrapperNode [2023-11-26 10:48:57,321 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:57,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:57,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:57,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:57,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,468 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,657 INFO L138 Inliner]: procedures = 676, calls = 2288, calls flagged for inlining = 37, calls inlined = 35, statements flattened = 4481 [2023-11-26 10:48:57,658 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:57,659 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:57,659 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:57,659 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:57,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,671 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,708 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,731 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 10:48:57,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,905 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:57,978 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:58,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:58,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:58,041 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:58,041 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:58,041 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:58,042 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (1/1) ... [2023-11-26 10:48:58,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:58,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:58,075 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:58,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-26 10:48:58,114 INFO L130 BoogieDeclarations]: Found specification of procedure bb_putchar [2023-11-26 10:48:58,116 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_putchar [2023-11-26 10:48:58,116 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2023-11-26 10:48:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure fcntl [2023-11-26 10:48:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure get_terminal_width_height [2023-11-26 10:48:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure get_terminal_width_height [2023-11-26 10:48:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure close [2023-11-26 10:48:58,117 INFO L130 BoogieDeclarations]: Found specification of procedure set_control_char_or_die [2023-11-26 10:48:58,117 INFO L138 BoogieDeclarations]: Found implementation of procedure set_control_char_or_die [2023-11-26 10:48:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-11-26 10:48:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-26 10:48:58,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:48:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device_and_die [2023-11-26 10:48:58,119 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device_and_die [2023-11-26 10:48:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure set_window_size [2023-11-26 10:48:58,119 INFO L138 BoogieDeclarations]: Found implementation of procedure set_window_size [2023-11-26 10:48:58,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-26 10:48:58,120 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-26 10:48:58,121 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-26 10:48:58,121 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_sfx [2023-11-26 10:48:58,121 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_sfx [2023-11-26 10:48:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure find_param [2023-11-26 10:48:58,122 INFO L138 BoogieDeclarations]: Found implementation of procedure find_param [2023-11-26 10:48:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure xatoul_range_sfx [2023-11-26 10:48:58,122 INFO L138 BoogieDeclarations]: Found implementation of procedure xatoul_range_sfx [2023-11-26 10:48:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-26 10:48:58,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 10:48:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure tty_value_to_baud [2023-11-26 10:48:58,123 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_value_to_baud [2023-11-26 10:48:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:48:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-26 10:48:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-26 10:48:58,123 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 10:48:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2023-11-26 10:48:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure nth_string [2023-11-26 10:48:58,124 INFO L138 BoogieDeclarations]: Found implementation of procedure nth_string [2023-11-26 10:48:58,124 INFO L130 BoogieDeclarations]: Found specification of procedure find_mode [2023-11-26 10:48:58,124 INFO L138 BoogieDeclarations]: Found implementation of procedure find_mode [2023-11-26 10:48:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-26 10:48:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-26 10:48:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-26 10:48:58,125 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-26 10:48:58,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-26 10:48:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-26 10:48:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure display_speed [2023-11-26 10:48:58,126 INFO L138 BoogieDeclarations]: Found implementation of procedure display_speed [2023-11-26 10:48:58,126 INFO L130 BoogieDeclarations]: Found specification of procedure tty_baud_to_value [2023-11-26 10:48:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_baud_to_value [2023-11-26 10:48:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg_and_die [2023-11-26 10:48:58,127 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg_and_die [2023-11-26 10:48:58,127 INFO L130 BoogieDeclarations]: Found specification of procedure get_ptr_to_tcflag [2023-11-26 10:48:58,128 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ptr_to_tcflag [2023-11-26 10:48:58,129 INFO L130 BoogieDeclarations]: Found specification of procedure tcgetattr [2023-11-26 10:48:58,129 INFO L138 BoogieDeclarations]: Found implementation of procedure tcgetattr [2023-11-26 10:48:58,129 INFO L130 BoogieDeclarations]: Found specification of procedure recover_mode [2023-11-26 10:48:58,130 INFO L138 BoogieDeclarations]: Found implementation of procedure recover_mode [2023-11-26 10:48:58,130 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-26 10:48:58,130 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-26 10:48:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:48:58,131 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:48:58,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:48:58,132 INFO L130 BoogieDeclarations]: Found specification of procedure set_speed_or_die [2023-11-26 10:48:58,132 INFO L138 BoogieDeclarations]: Found implementation of procedure set_speed_or_die [2023-11-26 10:48:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 10:48:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure xstrtoull_range_sfx [2023-11-26 10:48:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure xstrtoull_range_sfx [2023-11-26 10:48:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 10:48:58,133 INFO L130 BoogieDeclarations]: Found specification of procedure ioctl [2023-11-26 10:48:58,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ioctl [2023-11-26 10:48:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure find_control [2023-11-26 10:48:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure find_control [2023-11-26 10:48:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure xatou [2023-11-26 10:48:58,134 INFO L138 BoogieDeclarations]: Found implementation of procedure xatou [2023-11-26 10:48:58,134 INFO L130 BoogieDeclarations]: Found specification of procedure perror_on_device [2023-11-26 10:48:58,135 INFO L138 BoogieDeclarations]: Found implementation of procedure perror_on_device [2023-11-26 10:48:58,135 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-26 10:48:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-26 10:48:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure set_mode [2023-11-26 10:48:58,136 INFO L138 BoogieDeclarations]: Found implementation of procedure set_mode [2023-11-26 10:48:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-11-26 10:48:58,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 10:48:58,137 INFO L130 BoogieDeclarations]: Found specification of procedure index_in_strings [2023-11-26 10:48:58,137 INFO L138 BoogieDeclarations]: Found implementation of procedure index_in_strings [2023-11-26 10:48:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure newline [2023-11-26 10:48:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure newline [2023-11-26 10:48:58,138 INFO L130 BoogieDeclarations]: Found specification of procedure wrapf [2023-11-26 10:48:58,138 INFO L138 BoogieDeclarations]: Found implementation of procedure wrapf [2023-11-26 10:48:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-26 10:48:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-26 10:48:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-26 10:48:58,139 INFO L130 BoogieDeclarations]: Found specification of procedure display_window_size [2023-11-26 10:48:58,139 INFO L138 BoogieDeclarations]: Found implementation of procedure display_window_size [2023-11-26 10:48:58,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 10:48:58,820 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:58,824 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:49:03,709 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:49:03,971 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:49:03,972 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-26 10:49:03,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:03 BoogieIcfgContainer [2023-11-26 10:49:03,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:49:03,976 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:49:03,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:49:03,979 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:49:03,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:53" (1/3) ... [2023-11-26 10:49:03,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc5d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:03, skipping insertion in model container [2023-11-26 10:49:03,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:57" (2/3) ... [2023-11-26 10:49:03,984 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cc5d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:03, skipping insertion in model container [2023-11-26 10:49:03,984 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:03" (3/3) ... [2023-11-26 10:49:03,986 INFO L112 eAbstractionObserver]: Analyzing ICFG stty-1.i [2023-11-26 10:49:04,006 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:49:04,007 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 140 error locations. [2023-11-26 10:49:04,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:04,106 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;@6e111c66, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:04,106 INFO L358 AbstractCegarLoop]: Starting to check reachability of 140 error locations. [2023-11-26 10:49:04,117 INFO L276 IsEmpty]: Start isEmpty. Operand has 1250 states, 926 states have (on average 1.683585313174946) internal successors, (1559), 1108 states have internal predecessors, (1559), 147 states have call successors, (147), 36 states have call predecessors, (147), 36 states have return successors, (147), 143 states have call predecessors, (147), 147 states have call successors, (147) [2023-11-26 10:49:04,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 10:49:04,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:04,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 10:49:04,125 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:04,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:04,131 INFO L85 PathProgramCache]: Analyzing trace with hash 3879933, now seen corresponding path program 1 times [2023-11-26 10:49:04,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:04,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851554545] [2023-11-26 10:49:04,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:04,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:05,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:05,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:05,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851554545] [2023-11-26 10:49:05,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851554545] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:05,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:05,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:49:05,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421399416] [2023-11-26 10:49:05,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:05,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:05,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:05,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:05,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:05,402 INFO L87 Difference]: Start difference. First operand has 1250 states, 926 states have (on average 1.683585313174946) internal successors, (1559), 1108 states have internal predecessors, (1559), 147 states have call successors, (147), 36 states have call predecessors, (147), 36 states have return successors, (147), 143 states have call predecessors, (147), 147 states have call successors, (147) 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) [2023-11-26 10:49:05,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:05,996 INFO L93 Difference]: Finished difference Result 2474 states and 3774 transitions. [2023-11-26 10:49:05,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:06,000 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 [2023-11-26 10:49:06,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:06,030 INFO L225 Difference]: With dead ends: 2474 [2023-11-26 10:49:06,031 INFO L226 Difference]: Without dead ends: 1192 [2023-11-26 10:49:06,043 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 [2023-11-26 10:49:06,047 INFO L413 NwaCegarLoop]: 1668 mSDtfsCounter, 1 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:06,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3332 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:49:06,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2023-11-26 10:49:06,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1192. [2023-11-26 10:49:06,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1192 states, 906 states have (on average 1.5783664459161149) internal successors, (1430), 1069 states have internal predecessors, (1430), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:06,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1192 states to 1192 states and 1642 transitions. [2023-11-26 10:49:06,171 INFO L78 Accepts]: Start accepts. Automaton has 1192 states and 1642 transitions. Word has length 3 [2023-11-26 10:49:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:06,171 INFO L495 AbstractCegarLoop]: Abstraction has 1192 states and 1642 transitions. [2023-11-26 10:49:06,172 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) [2023-11-26 10:49:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 1192 states and 1642 transitions. [2023-11-26 10:49:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:49:06,172 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:06,173 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:49:06,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:49:06,173 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:06,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:06,174 INFO L85 PathProgramCache]: Analyzing trace with hash -374780029, now seen corresponding path program 1 times [2023-11-26 10:49:06,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:06,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419620175] [2023-11-26 10:49:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:06,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:06,912 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:06,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:06,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419620175] [2023-11-26 10:49:06,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419620175] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:06,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261323205] [2023-11-26 10:49:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:06,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:06,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:06,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:06,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:49:08,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:08,027 INFO L262 TraceCheckSpWp]: Trace formula consists of 2939 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:49:08,034 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:08,076 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:49:08,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261323205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:08,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:49:08,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-26 10:49:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752594519] [2023-11-26 10:49:08,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:08,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:08,080 INFO L87 Difference]: Start difference. First operand 1192 states and 1642 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) [2023-11-26 10:49:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:08,860 INFO L93 Difference]: Finished difference Result 1192 states and 1642 transitions. [2023-11-26 10:49:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:08,860 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 [2023-11-26 10:49:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:08,872 INFO L225 Difference]: With dead ends: 1192 [2023-11-26 10:49:08,872 INFO L226 Difference]: Without dead ends: 1191 [2023-11-26 10:49:08,874 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 [2023-11-26 10:49:08,875 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 3 mSDsluCounter, 3198 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4798 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:08,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4798 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:49:08,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1191 states. [2023-11-26 10:49:08,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1191 to 1191. [2023-11-26 10:49:08,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1191 states, 906 states have (on average 1.5772626931567328) internal successors, (1429), 1068 states have internal predecessors, (1429), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:08,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1641 transitions. [2023-11-26 10:49:08,948 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1641 transitions. Word has length 6 [2023-11-26 10:49:08,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:08,949 INFO L495 AbstractCegarLoop]: Abstraction has 1191 states and 1641 transitions. [2023-11-26 10:49:08,949 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) [2023-11-26 10:49:08,949 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1641 transitions. [2023-11-26 10:49:08,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 10:49:08,949 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:08,950 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:49:08,967 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:49:09,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:09,162 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:09,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:09,163 INFO L85 PathProgramCache]: Analyzing trace with hash 1266723258, now seen corresponding path program 1 times [2023-11-26 10:49:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:09,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352579959] [2023-11-26 10:49:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:09,613 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:49:09,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:09,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352579959] [2023-11-26 10:49:09,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352579959] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:09,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:09,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:09,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487824672] [2023-11-26 10:49:09,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:09,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:09,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:09,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:09,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:09,616 INFO L87 Difference]: Start difference. First operand 1191 states and 1641 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) [2023-11-26 10:49:10,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:10,059 INFO L93 Difference]: Finished difference Result 1191 states and 1641 transitions. [2023-11-26 10:49:10,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:10,059 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 [2023-11-26 10:49:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:10,070 INFO L225 Difference]: With dead ends: 1191 [2023-11-26 10:49:10,070 INFO L226 Difference]: Without dead ends: 1190 [2023-11-26 10:49:10,071 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 [2023-11-26 10:49:10,077 INFO L413 NwaCegarLoop]: 1601 mSDtfsCounter, 0 mSDsluCounter, 1599 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:10,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3200 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:49:10,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2023-11-26 10:49:10,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2023-11-26 10:49:10,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1188 states, 904 states have (on average 1.5774336283185841) internal successors, (1426), 1065 states have internal predecessors, (1426), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1638 transitions. [2023-11-26 10:49:10,137 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1638 transitions. Word has length 7 [2023-11-26 10:49:10,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:10,137 INFO L495 AbstractCegarLoop]: Abstraction has 1188 states and 1638 transitions. [2023-11-26 10:49:10,138 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) [2023-11-26 10:49:10,138 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1638 transitions. [2023-11-26 10:49:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:49:10,138 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:10,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:10,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:49:10,140 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:10,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:10,144 INFO L85 PathProgramCache]: Analyzing trace with hash 813354597, now seen corresponding path program 1 times [2023-11-26 10:49:10,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:10,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287763362] [2023-11-26 10:49:10,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:10,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:10,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 10:49:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:10,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:10,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:10,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287763362] [2023-11-26 10:49:10,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287763362] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:10,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920340069] [2023-11-26 10:49:10,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:10,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:10,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:10,906 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:10,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:49:11,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:11,912 INFO L262 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:49:11,916 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:11,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:49:11,932 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:49:11,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920340069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:11,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:49:11,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 10:49:11,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407435890] [2023-11-26 10:49:11,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:11,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:11,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:11,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:11,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:11,935 INFO L87 Difference]: Start difference. First operand 1188 states and 1638 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) [2023-11-26 10:49:12,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:12,614 INFO L93 Difference]: Finished difference Result 1188 states and 1638 transitions. [2023-11-26 10:49:12,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:12,615 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 [2023-11-26 10:49:12,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:12,623 INFO L225 Difference]: With dead ends: 1188 [2023-11-26 10:49:12,624 INFO L226 Difference]: Without dead ends: 1186 [2023-11-26 10:49:12,625 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 [2023-11-26 10:49:12,626 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 501 mSDsluCounter, 1049 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 556 SdHoareTripleChecker+Valid, 2641 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:12,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [556 Valid, 2641 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:49:12,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2023-11-26 10:49:12,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1186. [2023-11-26 10:49:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 904 states have (on average 1.575221238938053) internal successors, (1424), 1063 states have internal predecessors, (1424), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:12,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1636 transitions. [2023-11-26 10:49:12,704 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1636 transitions. Word has length 12 [2023-11-26 10:49:12,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:12,706 INFO L495 AbstractCegarLoop]: Abstraction has 1186 states and 1636 transitions. [2023-11-26 10:49:12,706 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) [2023-11-26 10:49:12,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1636 transitions. [2023-11-26 10:49:12,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 10:49:12,707 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:12,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:12,723 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 10:49:12,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:12,920 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:12,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:12,920 INFO L85 PathProgramCache]: Analyzing trace with hash -555808991, now seen corresponding path program 1 times [2023-11-26 10:49:12,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:12,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062056731] [2023-11-26 10:49:12,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:12,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:13,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:13,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 10:49:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:13,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:13,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062056731] [2023-11-26 10:49:13,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062056731] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:13,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215576093] [2023-11-26 10:49:13,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:13,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:13,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:13,472 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:13,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:49:14,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:14,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:49:14,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:14,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:14,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:14,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215576093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:14,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:14,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-26 10:49:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042328646] [2023-11-26 10:49:14,507 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:14,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:49:14,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:14,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:49:14,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:49:14,508 INFO L87 Difference]: Start difference. First operand 1186 states and 1636 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) [2023-11-26 10:49:15,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:15,173 INFO L93 Difference]: Finished difference Result 2376 states and 3278 transitions. [2023-11-26 10:49:15,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:49:15,174 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 [2023-11-26 10:49:15,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:15,182 INFO L225 Difference]: With dead ends: 2376 [2023-11-26 10:49:15,182 INFO L226 Difference]: Without dead ends: 1195 [2023-11-26 10:49:15,187 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 [2023-11-26 10:49:15,188 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 4 mSDsluCounter, 4791 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6390 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:15,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6390 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:49:15,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2023-11-26 10:49:15,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1195. [2023-11-26 10:49:15,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1195 states, 913 states have (on average 1.5695509309967142) internal successors, (1433), 1072 states have internal predecessors, (1433), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:15,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1195 states to 1195 states and 1645 transitions. [2023-11-26 10:49:15,236 INFO L78 Accepts]: Start accepts. Automaton has 1195 states and 1645 transitions. Word has length 13 [2023-11-26 10:49:15,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:15,237 INFO L495 AbstractCegarLoop]: Abstraction has 1195 states and 1645 transitions. [2023-11-26 10:49:15,237 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) [2023-11-26 10:49:15,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1195 states and 1645 transitions. [2023-11-26 10:49:15,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 10:49:15,238 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:15,238 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:15,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:15,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:15,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:15,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:15,452 INFO L85 PathProgramCache]: Analyzing trace with hash -842231577, now seen corresponding path program 2 times [2023-11-26 10:49:15,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:15,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637353867] [2023-11-26 10:49:15,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:15,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:15,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:16,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:49:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:16,153 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:16,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:16,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637353867] [2023-11-26 10:49:16,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637353867] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:16,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266493865] [2023-11-26 10:49:16,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:49:16,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:16,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:16,155 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:16,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:49:17,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:49:17,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:49:17,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 2938 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:49:17,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:17,262 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:49:17,262 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:49:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266493865] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:17,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:49:17,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-26 10:49:17,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393664633] [2023-11-26 10:49:17,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:17,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:49:17,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:17,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:49:17,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:49:17,264 INFO L87 Difference]: Start difference. First operand 1195 states and 1645 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) [2023-11-26 10:49:18,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:18,618 INFO L93 Difference]: Finished difference Result 1195 states and 1645 transitions. [2023-11-26 10:49:18,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:49:18,619 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 [2023-11-26 10:49:18,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:18,627 INFO L225 Difference]: With dead ends: 1195 [2023-11-26 10:49:18,627 INFO L226 Difference]: Without dead ends: 1193 [2023-11-26 10:49:18,628 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 [2023-11-26 10:49:18,629 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 500 mSDsluCounter, 4175 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 5755 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:18,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [555 Valid, 5755 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-26 10:49:18,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2023-11-26 10:49:18,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1193. [2023-11-26 10:49:18,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1193 states, 913 states have (on average 1.5673603504928806) internal successors, (1431), 1070 states have internal predecessors, (1431), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:18,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1193 states to 1193 states and 1643 transitions. [2023-11-26 10:49:18,681 INFO L78 Accepts]: Start accepts. Automaton has 1193 states and 1643 transitions. Word has length 22 [2023-11-26 10:49:18,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:18,681 INFO L495 AbstractCegarLoop]: Abstraction has 1193 states and 1643 transitions. [2023-11-26 10:49:18,681 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) [2023-11-26 10:49:18,682 INFO L276 IsEmpty]: Start isEmpty. Operand 1193 states and 1643 transitions. [2023-11-26 10:49:18,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 10:49:18,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:18,683 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:18,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:18,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:18,895 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:18,896 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:18,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1217509652, now seen corresponding path program 1 times [2023-11-26 10:49:18,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:18,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551497736] [2023-11-26 10:49:18,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:18,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:19,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:19,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:49:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:19,502 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:49:19,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:19,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551497736] [2023-11-26 10:49:19,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551497736] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:19,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:19,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:19,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736968612] [2023-11-26 10:49:19,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:19,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:19,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:19,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:19,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:19,507 INFO L87 Difference]: Start difference. First operand 1193 states and 1643 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) [2023-11-26 10:49:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:20,391 INFO L93 Difference]: Finished difference Result 2369 states and 3270 transitions. [2023-11-26 10:49:20,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:20,392 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 [2023-11-26 10:49:20,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:20,402 INFO L225 Difference]: With dead ends: 2369 [2023-11-26 10:49:20,403 INFO L226 Difference]: Without dead ends: 1196 [2023-11-26 10:49:20,408 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 [2023-11-26 10:49:20,410 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 1 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:20,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3189 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:49:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2023-11-26 10:49:20,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1196. [2023-11-26 10:49:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1196 states, 916 states have (on average 1.5655021834061136) internal successors, (1434), 1073 states have internal predecessors, (1434), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1196 states to 1196 states and 1646 transitions. [2023-11-26 10:49:20,482 INFO L78 Accepts]: Start accepts. Automaton has 1196 states and 1646 transitions. Word has length 27 [2023-11-26 10:49:20,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:20,483 INFO L495 AbstractCegarLoop]: Abstraction has 1196 states and 1646 transitions. [2023-11-26 10:49:20,483 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) [2023-11-26 10:49:20,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1196 states and 1646 transitions. [2023-11-26 10:49:20,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 10:49:20,485 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:20,485 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:20,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:49:20,486 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:20,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:20,486 INFO L85 PathProgramCache]: Analyzing trace with hash 131010990, now seen corresponding path program 1 times [2023-11-26 10:49:20,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:20,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792220307] [2023-11-26 10:49:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:20,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:20,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:20,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:49:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:49:20,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:20,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792220307] [2023-11-26 10:49:20,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792220307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:20,985 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:20,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:20,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385891246] [2023-11-26 10:49:20,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:20,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:20,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:20,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:20,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:20,987 INFO L87 Difference]: Start difference. First operand 1196 states and 1646 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:49:21,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:21,902 INFO L93 Difference]: Finished difference Result 1204 states and 1654 transitions. [2023-11-26 10:49:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:21,902 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2023-11-26 10:49:21,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:21,912 INFO L225 Difference]: With dead ends: 1204 [2023-11-26 10:49:21,912 INFO L226 Difference]: Without dead ends: 1200 [2023-11-26 10:49:21,913 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 [2023-11-26 10:49:21,914 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 2 mSDsluCounter, 1558 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:21,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3154 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:49:21,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2023-11-26 10:49:21,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1200. [2023-11-26 10:49:21,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 920 states have (on average 1.5630434782608695) internal successors, (1438), 1077 states have internal predecessors, (1438), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:21,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1650 transitions. [2023-11-26 10:49:21,966 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1650 transitions. Word has length 30 [2023-11-26 10:49:21,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:21,967 INFO L495 AbstractCegarLoop]: Abstraction has 1200 states and 1650 transitions. [2023-11-26 10:49:21,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:49:21,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1650 transitions. [2023-11-26 10:49:21,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 10:49:21,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:21,968 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] [2023-11-26 10:49:21,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:49:21,969 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:21,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:21,970 INFO L85 PathProgramCache]: Analyzing trace with hash 171058710, now seen corresponding path program 1 times [2023-11-26 10:49:21,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:21,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71808089] [2023-11-26 10:49:21,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:21,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:49:22,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:22,587 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:49:22,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:22,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71808089] [2023-11-26 10:49:22,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71808089] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:22,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344447686] [2023-11-26 10:49:22,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:22,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:22,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:22,594 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:22,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:49:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:23,602 INFO L262 TraceCheckSpWp]: Trace formula consists of 3134 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:49:23,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:23,695 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:49:23,695 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:23,816 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:49:23,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344447686] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:23,816 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:23,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-26 10:49:23,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272527343] [2023-11-26 10:49:23,817 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:23,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:49:23,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:23,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:49:23,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:49:23,819 INFO L87 Difference]: Start difference. First operand 1200 states and 1650 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) [2023-11-26 10:49:24,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:24,884 INFO L93 Difference]: Finished difference Result 2403 states and 3309 transitions. [2023-11-26 10:49:24,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:49:24,885 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 [2023-11-26 10:49:24,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:24,895 INFO L225 Difference]: With dead ends: 2403 [2023-11-26 10:49:24,895 INFO L226 Difference]: Without dead ends: 1217 [2023-11-26 10:49:24,900 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 [2023-11-26 10:49:24,902 INFO L413 NwaCegarLoop]: 1591 mSDtfsCounter, 7 mSDsluCounter, 11123 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 12714 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:24,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 12714 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 10:49:24,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2023-11-26 10:49:24,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1217. [2023-11-26 10:49:24,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1217 states, 938 states have (on average 1.5511727078891258) internal successors, (1455), 1094 states have internal predecessors, (1455), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:24,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1217 states to 1217 states and 1667 transitions. [2023-11-26 10:49:24,956 INFO L78 Accepts]: Start accepts. Automaton has 1217 states and 1667 transitions. Word has length 30 [2023-11-26 10:49:24,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:24,957 INFO L495 AbstractCegarLoop]: Abstraction has 1217 states and 1667 transitions. [2023-11-26 10:49:24,958 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) [2023-11-26 10:49:24,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1217 states and 1667 transitions. [2023-11-26 10:49:24,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:49:24,963 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:24,964 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] [2023-11-26 10:49:24,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:25,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:25,177 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:25,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:25,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1385689688, now seen corresponding path program 1 times [2023-11-26 10:49:25,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:25,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133418703] [2023-11-26 10:49:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:25,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:25,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:49:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 10:49:25,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:25,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133418703] [2023-11-26 10:49:25,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133418703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:25,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:25,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:25,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460815066] [2023-11-26 10:49:25,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:25,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:25,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:25,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:25,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:25,744 INFO L87 Difference]: Start difference. First operand 1217 states and 1667 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) [2023-11-26 10:49:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:26,374 INFO L93 Difference]: Finished difference Result 1231 states and 1683 transitions. [2023-11-26 10:49:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:26,375 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 [2023-11-26 10:49:26,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:26,385 INFO L225 Difference]: With dead ends: 1231 [2023-11-26 10:49:26,385 INFO L226 Difference]: Without dead ends: 1229 [2023-11-26 10:49:26,386 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 [2023-11-26 10:49:26,387 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 3 mSDsluCounter, 1590 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:26,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 3184 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:49:26,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2023-11-26 10:49:26,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1227. [2023-11-26 10:49:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 948 states have (on average 1.5485232067510548) internal successors, (1468), 1104 states have internal predecessors, (1468), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 1680 transitions. [2023-11-26 10:49:26,438 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 1680 transitions. Word has length 49 [2023-11-26 10:49:26,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:26,439 INFO L495 AbstractCegarLoop]: Abstraction has 1227 states and 1680 transitions. [2023-11-26 10:49:26,439 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) [2023-11-26 10:49:26,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 1680 transitions. [2023-11-26 10:49:26,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:49:26,440 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:26,440 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] [2023-11-26 10:49:26,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:49:26,441 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:26,441 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:26,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1385687959, now seen corresponding path program 1 times [2023-11-26 10:49:26,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:26,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896110160] [2023-11-26 10:49:26,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:26,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:26,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:26,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:49:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 10:49:26,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:26,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896110160] [2023-11-26 10:49:26,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896110160] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:26,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:26,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:26,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953749645] [2023-11-26 10:49:26,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:26,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:26,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:26,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:26,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:26,933 INFO L87 Difference]: Start difference. First operand 1227 states and 1680 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) [2023-11-26 10:49:27,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:27,815 INFO L93 Difference]: Finished difference Result 1227 states and 1680 transitions. [2023-11-26 10:49:27,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:27,815 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 [2023-11-26 10:49:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:27,826 INFO L225 Difference]: With dead ends: 1227 [2023-11-26 10:49:27,826 INFO L226 Difference]: Without dead ends: 1226 [2023-11-26 10:49:27,828 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 [2023-11-26 10:49:27,828 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 0 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3187 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:27,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3187 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:49:27,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2023-11-26 10:49:27,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1222. [2023-11-26 10:49:27,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1222 states, 944 states have (on average 1.548728813559322) internal successors, (1462), 1099 states have internal predecessors, (1462), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:27,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1222 states to 1222 states and 1674 transitions. [2023-11-26 10:49:27,880 INFO L78 Accepts]: Start accepts. Automaton has 1222 states and 1674 transitions. Word has length 49 [2023-11-26 10:49:27,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:27,881 INFO L495 AbstractCegarLoop]: Abstraction has 1222 states and 1674 transitions. [2023-11-26 10:49:27,881 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) [2023-11-26 10:49:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1222 states and 1674 transitions. [2023-11-26 10:49:27,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 10:49:27,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:27,883 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] [2023-11-26 10:49:27,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:49:27,883 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:27,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:27,884 INFO L85 PathProgramCache]: Analyzing trace with hash 733121556, now seen corresponding path program 1 times [2023-11-26 10:49:27,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:27,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924119845] [2023-11-26 10:49:27,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:27,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:28,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:28,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:49:28,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:28,448 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:49:28,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:28,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924119845] [2023-11-26 10:49:28,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924119845] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:28,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:28,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:28,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28831210] [2023-11-26 10:49:28,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:28,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:28,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:28,452 INFO L87 Difference]: Start difference. First operand 1222 states and 1674 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:49:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:29,711 INFO L93 Difference]: Finished difference Result 1222 states and 1674 transitions. [2023-11-26 10:49:29,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:29,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2023-11-26 10:49:29,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:29,720 INFO L225 Difference]: With dead ends: 1222 [2023-11-26 10:49:29,721 INFO L226 Difference]: Without dead ends: 1213 [2023-11-26 10:49:29,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:29,722 INFO L413 NwaCegarLoop]: 1560 mSDtfsCounter, 456 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 4134 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:29,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [511 Valid, 4134 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 10:49:29,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2023-11-26 10:49:29,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1213. [2023-11-26 10:49:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1213 states, 944 states have (on average 1.5391949152542372) internal successors, (1453), 1090 states have internal predecessors, (1453), 116 states have call successors, (116), 35 states have call predecessors, (116), 32 states have return successors, (96), 92 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 10:49:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1665 transitions. [2023-11-26 10:49:29,772 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1665 transitions. Word has length 51 [2023-11-26 10:49:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:29,772 INFO L495 AbstractCegarLoop]: Abstraction has 1213 states and 1665 transitions. [2023-11-26 10:49:29,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:49:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1665 transitions. [2023-11-26 10:49:29,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:49:29,774 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:29,774 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, 1, 1, 1] [2023-11-26 10:49:29,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:49:29,774 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:29,774 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:29,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1251934101, now seen corresponding path program 1 times [2023-11-26 10:49:29,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:29,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811342081] [2023-11-26 10:49:29,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:29,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:30,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:49:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:30,454 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:49:30,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:30,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811342081] [2023-11-26 10:49:30,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811342081] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:30,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:30,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:49:30,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637306577] [2023-11-26 10:49:30,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:30,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:30,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:30,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:30,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:30,458 INFO L87 Difference]: Start difference. First operand 1213 states and 1665 transitions. Second operand has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:49:31,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:31,618 INFO L93 Difference]: Finished difference Result 1621 states and 2249 transitions. [2023-11-26 10:49:31,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:31,619 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-11-26 10:49:31,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:31,630 INFO L225 Difference]: With dead ends: 1621 [2023-11-26 10:49:31,630 INFO L226 Difference]: Without dead ends: 1612 [2023-11-26 10:49:31,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:31,633 INFO L413 NwaCegarLoop]: 1580 mSDtfsCounter, 446 mSDsluCounter, 1984 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 3564 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:31,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [500 Valid, 3564 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-26 10:49:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2023-11-26 10:49:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 1368. [2023-11-26 10:49:31,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1071 states have (on average 1.535014005602241) internal successors, (1644), 1223 states have internal predecessors, (1644), 144 states have call successors, (144), 35 states have call predecessors, (144), 32 states have return successors, (124), 116 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:49:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1912 transitions. [2023-11-26 10:49:31,703 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1912 transitions. Word has length 52 [2023-11-26 10:49:31,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:31,703 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 1912 transitions. [2023-11-26 10:49:31,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.666666666666667) internal successors, (23), 4 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:49:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1912 transitions. [2023-11-26 10:49:31,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 10:49:31,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:31,704 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] [2023-11-26 10:49:31,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-26 10:49:31,705 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:31,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:31,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1118657839, now seen corresponding path program 1 times [2023-11-26 10:49:31,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:31,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903965897] [2023-11-26 10:49:31,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:31,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:49:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:32,202 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 10:49:32,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903965897] [2023-11-26 10:49:32,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [903965897] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:32,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1122995220] [2023-11-26 10:49:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:32,203 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:32,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:32,206 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:32,229 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:49:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:33,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 3305 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:49:33,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:33,384 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 10:49:33,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:33,406 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 10:49:33,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1122995220] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:33,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:33,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 10:49:33,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039675326] [2023-11-26 10:49:33,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:33,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:49:33,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:33,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:49:33,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:49:33,409 INFO L87 Difference]: Start difference. First operand 1368 states and 1912 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) [2023-11-26 10:49:34,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:34,296 INFO L93 Difference]: Finished difference Result 2711 states and 3801 transitions. [2023-11-26 10:49:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:49:34,297 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 [2023-11-26 10:49:34,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:34,308 INFO L225 Difference]: With dead ends: 2711 [2023-11-26 10:49:34,308 INFO L226 Difference]: Without dead ends: 1386 [2023-11-26 10:49:34,314 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 [2023-11-26 10:49:34,315 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 4 mSDsluCounter, 3166 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4752 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:34,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 4752 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-26 10:49:34,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2023-11-26 10:49:34,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 1386. [2023-11-26 10:49:34,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1386 states, 1089 states have (on average 1.5261707988980717) internal successors, (1662), 1241 states have internal predecessors, (1662), 144 states have call successors, (144), 35 states have call predecessors, (144), 32 states have return successors, (124), 116 states have call predecessors, (124), 124 states have call successors, (124) [2023-11-26 10:49:34,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1930 transitions. [2023-11-26 10:49:34,386 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1930 transitions. Word has length 57 [2023-11-26 10:49:34,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:34,386 INFO L495 AbstractCegarLoop]: Abstraction has 1386 states and 1930 transitions. [2023-11-26 10:49:34,386 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) [2023-11-26 10:49:34,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1930 transitions. [2023-11-26 10:49:34,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 10:49:34,388 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:34,388 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] [2023-11-26 10:49:34,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 10:49:34,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bc64f0ad-2008-4193-b381-c0e141c02053/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 10:49:34,603 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting index_in_stringsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [set_control_char_or_dieErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, set_control_char_or_dieErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 138 more)] === [2023-11-26 10:49:34,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash -414489876, now seen corresponding path program 1 times [2023-11-26 10:49:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017297091] [2023-11-26 10:49:34,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:34,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:34,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:35,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:49:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:35,048 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:49:35,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:35,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017297091] [2023-11-26 10:49:35,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017297091] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:35,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:35,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:35,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634193442] [2023-11-26 10:49:35,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:35,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:35,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:35,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:35,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:35,051 INFO L87 Difference]: Start difference. First operand 1386 states and 1930 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)