./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 97427099fd8bef469ca09935f2571171b3c2da310fd359d755dfdaf75f2e6e9e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:37:54,014 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:37:54,088 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-19 07:37:54,094 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:37:54,095 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:37:54,124 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:37:54,124 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:37:54,125 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:37:54,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:37:54,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:37:54,134 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:37:54,134 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:37:54,135 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:37:54,137 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:37:54,137 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:37:54,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:37:54,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:37:54,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:37:54,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:37:54,140 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:37:54,140 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:37:54,141 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:37:54,141 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:37:54,142 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:37:54,142 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:37:54,143 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:37:54,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:37:54,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:37:54,144 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:37:54,144 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:37:54,145 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:37:54,145 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:37:54,146 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:37:54,146 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:37:54,146 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:37:54,146 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:37:54,146 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:37:54,147 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:37:54,147 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_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 97427099fd8bef469ca09935f2571171b3c2da310fd359d755dfdaf75f2e6e9e [2023-11-19 07:37:54,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:37:54,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:37:54,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:37:54,489 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:37:54,490 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:37:54,492 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i [2023-11-19 07:37:57,743 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:37:58,321 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:37:58,322 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/sv-benchmarks/c/busybox-1.22.0/ls-incomplete-1.i [2023-11-19 07:37:58,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/data/562cb811c/f6e6c785fae847b18030816875a5a441/FLAG21fd633f3 [2023-11-19 07:37:58,395 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/data/562cb811c/f6e6c785fae847b18030816875a5a441 [2023-11-19 07:37:58,401 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:37:58,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:37:58,409 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:37:58,409 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:37:58,414 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:37:58,417 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,418 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596aab3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:37:58, skipping insertion in model container [2023-11-19 07:37:58,419 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:37:58" (1/1) ... [2023-11-19 07:37:58,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:38:01,398 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:01,435 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:38:01,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:38:02,265 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,266 WARN L675 CHandler]: The function x2x_utoa is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,266 WARN L675 CHandler]: The function sprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,266 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,266 WARN L675 CHandler]: The function strncmp is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,266 WARN L675 CHandler]: The function strstr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,267 WARN L675 CHandler]: The function strrchr is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,268 WARN L675 CHandler]: The function putchar is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,268 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,272 WARN L675 CHandler]: The function fputs is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,274 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,274 WARN L675 CHandler]: The function ctime is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,274 WARN L675 CHandler]: The function time is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:38:02,282 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:38:02,283 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02 WrapperNode [2023-11-19 07:38:02,284 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:38:02,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:02,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:38:02,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:38:02,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,412 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,602 INFO L138 Inliner]: procedures = 743, calls = 1282, calls flagged for inlining = 68, calls inlined = 66, statements flattened = 4693 [2023-11-19 07:38:02,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:38:02,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:38:02,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:38:02,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:38:02,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,682 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,682 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,786 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,941 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:38:02,942 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:38:02,943 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:38:02,943 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:38:02,944 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (1/1) ... [2023-11-19 07:38:02,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:38:02,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:02,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:38:03,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:38:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2023-11-19 07:38:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2023-11-19 07:38:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure ctime [2023-11-19 07:38:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached [2023-11-19 07:38:03,026 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached [2023-11-19 07:38:03,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_realloc [2023-11-19 07:38:03,027 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_realloc [2023-11-19 07:38:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure vasprintf [2023-11-19 07:38:03,027 INFO L138 BoogieDeclarations]: Found implementation of procedure vasprintf [2023-11-19 07:38:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure utoa [2023-11-19 07:38:03,027 INFO L138 BoogieDeclarations]: Found implementation of procedure utoa [2023-11-19 07:38:03,027 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2023-11-19 07:38:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure print_name [2023-11-19 07:38:03,028 INFO L138 BoogieDeclarations]: Found implementation of procedure print_name [2023-11-19 07:38:03,028 INFO L130 BoogieDeclarations]: Found specification of procedure xrealloc [2023-11-19 07:38:03,029 INFO L138 BoogieDeclarations]: Found implementation of procedure xrealloc [2023-11-19 07:38:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-19 07:38:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure strstr [2023-11-19 07:38:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:38:03,029 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-19 07:38:03,030 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-19 07:38:03,030 INFO L130 BoogieDeclarations]: Found specification of procedure count_dirs [2023-11-19 07:38:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure count_dirs [2023-11-19 07:38:03,031 INFO L130 BoogieDeclarations]: Found specification of procedure my_stat [2023-11-19 07:38:03,031 INFO L138 BoogieDeclarations]: Found implementation of procedure my_stat [2023-11-19 07:38:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 07:38:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-19 07:38:03,032 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-19 07:38:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 07:38:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:38:03,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:38:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2023-11-19 07:38:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-19 07:38:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:38:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:38:03,033 INFO L130 BoogieDeclarations]: Found specification of procedure dnsort [2023-11-19 07:38:03,033 INFO L138 BoogieDeclarations]: Found implementation of procedure dnsort [2023-11-19 07:38:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure printable_string [2023-11-19 07:38:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure printable_string [2023-11-19 07:38:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:38:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:38:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-11-19 07:38:03,034 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-11-19 07:38:03,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-19 07:38:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-19 07:38:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-19 07:38:03,035 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-19 07:38:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 07:38:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 07:38:03,035 INFO L130 BoogieDeclarations]: Found specification of procedure bb_simple_perror_msg [2023-11-19 07:38:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_simple_perror_msg [2023-11-19 07:38:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure get_cached_groupname [2023-11-19 07:38:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure get_cached_groupname [2023-11-19 07:38:03,036 INFO L130 BoogieDeclarations]: Found specification of procedure sort_and_display_files [2023-11-19 07:38:03,036 INFO L138 BoogieDeclarations]: Found implementation of procedure sort_and_display_files [2023-11-19 07:38:03,037 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2023-11-19 07:38:03,037 INFO L138 BoogieDeclarations]: Found implementation of procedure stat [2023-11-19 07:38:03,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-19 07:38:03,038 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-19 07:38:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure fgcolor [2023-11-19 07:38:03,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fgcolor [2023-11-19 07:38:03,039 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-19 07:38:03,040 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-19 07:38:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:38:03,040 INFO L130 BoogieDeclarations]: Found specification of procedure splitdnarray [2023-11-19 07:38:03,041 INFO L138 BoogieDeclarations]: Found implementation of procedure splitdnarray [2023-11-19 07:38:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:38:03,041 INFO L130 BoogieDeclarations]: Found specification of procedure bold [2023-11-19 07:38:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure bold [2023-11-19 07:38:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 07:38:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure append_char [2023-11-19 07:38:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure append_char [2023-11-19 07:38:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure scan_and_display_dirs_recur [2023-11-19 07:38:03,042 INFO L138 BoogieDeclarations]: Found implementation of procedure scan_and_display_dirs_recur [2023-11-19 07:38:03,042 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2023-11-19 07:38:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure lstat [2023-11-19 07:38:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure time [2023-11-19 07:38:03,043 INFO L130 BoogieDeclarations]: Found specification of procedure wh_helper [2023-11-19 07:38:03,043 INFO L138 BoogieDeclarations]: Found implementation of procedure wh_helper [2023-11-19 07:38:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:38:03,044 INFO L130 BoogieDeclarations]: Found specification of procedure bb_perror_msg [2023-11-19 07:38:03,044 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_perror_msg [2023-11-19 07:38:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure strrchr [2023-11-19 07:38:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure isatty [2023-11-19 07:38:03,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isatty [2023-11-19 07:38:03,045 INFO L130 BoogieDeclarations]: Found specification of procedure dnalloc [2023-11-19 07:38:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure dnalloc [2023-11-19 07:38:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-19 07:38:03,046 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-19 07:38:03,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-19 07:38:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:38:03,047 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-19 07:38:03,752 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:38:03,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:38:08,998 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:38:09,018 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:38:09,019 INFO L302 CfgBuilder]: Removed 66 assume(true) statements. [2023-11-19 07:38:09,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:09 BoogieIcfgContainer [2023-11-19 07:38:09,029 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:38:09,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:38:09,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:38:09,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:38:09,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:37:58" (1/3) ... [2023-11-19 07:38:09,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206b131a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:09, skipping insertion in model container [2023-11-19 07:38:09,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:38:02" (2/3) ... [2023-11-19 07:38:09,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206b131a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:38:09, skipping insertion in model container [2023-11-19 07:38:09,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:38:09" (3/3) ... [2023-11-19 07:38:09,039 INFO L112 eAbstractionObserver]: Analyzing ICFG ls-incomplete-1.i [2023-11-19 07:38:09,061 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:38:09,061 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 135 error locations. [2023-11-19 07:38:09,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:38:09,154 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;@6813027a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:38:09,154 INFO L358 AbstractCegarLoop]: Starting to check reachability of 135 error locations. [2023-11-19 07:38:09,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 1510 states, 1242 states have (on average 1.6626409017713366) internal successors, (2065), 1385 states have internal predecessors, (2065), 101 states have call successors, (101), 32 states have call predecessors, (101), 32 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) [2023-11-19 07:38:09,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 07:38:09,173 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:09,174 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 07:38:09,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:09,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:09,181 INFO L85 PathProgramCache]: Analyzing trace with hash 87952133, now seen corresponding path program 1 times [2023-11-19 07:38:09,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:09,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765681955] [2023-11-19 07:38:09,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:09,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:09,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:09,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:09,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765681955] [2023-11-19 07:38:09,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765681955] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:09,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:09,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:09,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026124618] [2023-11-19 07:38:09,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:09,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:09,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:10,035 INFO L87 Difference]: Start difference. First operand has 1510 states, 1242 states have (on average 1.6626409017713366) internal successors, (2065), 1385 states have internal predecessors, (2065), 101 states have call successors, (101), 32 states have call predecessors, (101), 32 states have return successors, (101), 100 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:10,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:10,342 INFO L93 Difference]: Finished difference Result 2960 states and 4536 transitions. [2023-11-19 07:38:10,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:10,346 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 07:38:10,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:10,389 INFO L225 Difference]: With dead ends: 2960 [2023-11-19 07:38:10,389 INFO L226 Difference]: Without dead ends: 1446 [2023-11-19 07:38:10,403 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:10,407 INFO L413 NwaCegarLoop]: 2078 mSDtfsCounter, 1 mSDsluCounter, 2072 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4150 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:10,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4150 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:10,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2023-11-19 07:38:10,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1446. [2023-11-19 07:38:10,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1446 states, 1201 states have (on average 1.575353871773522) internal successors, (1892), 1330 states have internal predecessors, (1892), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1446 states to 1446 states and 2073 transitions. [2023-11-19 07:38:10,542 INFO L78 Accepts]: Start accepts. Automaton has 1446 states and 2073 transitions. Word has length 4 [2023-11-19 07:38:10,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:10,543 INFO L495 AbstractCegarLoop]: Abstraction has 1446 states and 2073 transitions. [2023-11-19 07:38:10,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:10,545 INFO L276 IsEmpty]: Start isEmpty. Operand 1446 states and 2073 transitions. [2023-11-19 07:38:10,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 07:38:10,546 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:10,546 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-19 07:38:10,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:38:10,547 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:10,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:10,548 INFO L85 PathProgramCache]: Analyzing trace with hash 254795382, now seen corresponding path program 1 times [2023-11-19 07:38:10,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:10,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057037208] [2023-11-19 07:38:10,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:10,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:10,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:10,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057037208] [2023-11-19 07:38:10,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057037208] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:10,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142451852] [2023-11-19 07:38:10,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:10,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:10,914 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:10,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:10,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:38:11,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:11,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:38:11,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:11,643 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:11,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142451852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:11,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:38:11,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:38:11,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590872396] [2023-11-19 07:38:11,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:11,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:11,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:11,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:11,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:11,647 INFO L87 Difference]: Start difference. First operand 1446 states and 2073 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:11,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:11,746 INFO L93 Difference]: Finished difference Result 1446 states and 2073 transitions. [2023-11-19 07:38:11,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:11,747 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 07:38:11,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:11,757 INFO L225 Difference]: With dead ends: 1446 [2023-11-19 07:38:11,758 INFO L226 Difference]: Without dead ends: 1445 [2023-11-19 07:38:11,759 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:11,760 INFO L413 NwaCegarLoop]: 2064 mSDtfsCounter, 3 mSDsluCounter, 4124 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6188 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:11,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6188 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:11,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2023-11-19 07:38:11,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1445. [2023-11-19 07:38:11,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1445 states, 1201 states have (on average 1.5745212323064113) internal successors, (1891), 1329 states have internal predecessors, (1891), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:11,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1445 states to 1445 states and 2072 transitions. [2023-11-19 07:38:11,825 INFO L78 Accepts]: Start accepts. Automaton has 1445 states and 2072 transitions. Word has length 7 [2023-11-19 07:38:11,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:11,825 INFO L495 AbstractCegarLoop]: Abstraction has 1445 states and 2072 transitions. [2023-11-19 07:38:11,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:11,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1445 states and 2072 transitions. [2023-11-19 07:38:11,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 07:38:11,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:11,826 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2023-11-19 07:38:11,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:38:12,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:12,053 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:12,054 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:12,054 INFO L85 PathProgramCache]: Analyzing trace with hash -691274878, now seen corresponding path program 1 times [2023-11-19 07:38:12,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:12,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498598015] [2023-11-19 07:38:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:12,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:12,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:12,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:12,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498598015] [2023-11-19 07:38:12,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498598015] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:12,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:12,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:12,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365000013] [2023-11-19 07:38:12,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:12,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:12,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:12,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:12,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:12,296 INFO L87 Difference]: Start difference. First operand 1445 states and 2072 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:12,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:12,373 INFO L93 Difference]: Finished difference Result 1445 states and 2072 transitions. [2023-11-19 07:38:12,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:12,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 07:38:12,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:12,385 INFO L225 Difference]: With dead ends: 1445 [2023-11-19 07:38:12,385 INFO L226 Difference]: Without dead ends: 1444 [2023-11-19 07:38:12,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:12,391 INFO L413 NwaCegarLoop]: 2065 mSDtfsCounter, 0 mSDsluCounter, 2062 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4127 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:12,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4127 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:12,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2023-11-19 07:38:12,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 1442. [2023-11-19 07:38:12,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1442 states, 1199 states have (on average 1.5746455379482902) internal successors, (1888), 1326 states have internal predecessors, (1888), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1442 states to 1442 states and 2069 transitions. [2023-11-19 07:38:12,453 INFO L78 Accepts]: Start accepts. Automaton has 1442 states and 2069 transitions. Word has length 8 [2023-11-19 07:38:12,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:12,454 INFO L495 AbstractCegarLoop]: Abstraction has 1442 states and 2069 transitions. [2023-11-19 07:38:12,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:38:12,454 INFO L276 IsEmpty]: Start isEmpty. Operand 1442 states and 2069 transitions. [2023-11-19 07:38:12,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 07:38:12,455 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:12,455 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:12,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:38:12,455 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:12,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:12,456 INFO L85 PathProgramCache]: Analyzing trace with hash -370219416, now seen corresponding path program 1 times [2023-11-19 07:38:12,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:12,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675469711] [2023-11-19 07:38:12,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:12,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:12,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:12,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:12,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:12,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675469711] [2023-11-19 07:38:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675469711] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:12,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113340294] [2023-11-19 07:38:12,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:12,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:12,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:12,752 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:12,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:38:13,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:13,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 1090 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-19 07:38:13,428 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:13,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:38:13,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:13,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113340294] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:13,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:38:13,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-19 07:38:13,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203033226] [2023-11-19 07:38:13,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:13,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:13,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:13,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:13,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:13,449 INFO L87 Difference]: Start difference. First operand 1442 states and 2069 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:13,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:13,540 INFO L93 Difference]: Finished difference Result 1442 states and 2069 transitions. [2023-11-19 07:38:13,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:13,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-11-19 07:38:13,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:13,551 INFO L225 Difference]: With dead ends: 1442 [2023-11-19 07:38:13,552 INFO L226 Difference]: Without dead ends: 1440 [2023-11-19 07:38:13,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:13,555 INFO L413 NwaCegarLoop]: 2056 mSDtfsCounter, 713 mSDsluCounter, 1329 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:13,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 3385 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:13,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2023-11-19 07:38:13,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1440. [2023-11-19 07:38:13,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1199 states have (on average 1.572977481234362) internal successors, (1886), 1324 states have internal predecessors, (1886), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:13,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2067 transitions. [2023-11-19 07:38:13,625 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2067 transitions. Word has length 13 [2023-11-19 07:38:13,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:13,626 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 2067 transitions. [2023-11-19 07:38:13,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:13,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2067 transitions. [2023-11-19 07:38:13,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 07:38:13,627 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:13,627 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:13,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:13,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-19 07:38:13,844 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:13,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:13,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1408102873, now seen corresponding path program 1 times [2023-11-19 07:38:13,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:13,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715835540] [2023-11-19 07:38:13,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:13,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:13,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-19 07:38:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:14,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715835540] [2023-11-19 07:38:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715835540] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:14,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960769145] [2023-11-19 07:38:14,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:14,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:14,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:14,110 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:14,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:38:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:14,735 INFO L262 TraceCheckSpWp]: Trace formula consists of 1091 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:38:14,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:14,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:14,757 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:14,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:14,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [960769145] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:14,799 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:14,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:38:14,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002818783] [2023-11-19 07:38:14,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:14,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:14,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:14,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:14,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:14,803 INFO L87 Difference]: Start difference. First operand 1440 states and 2067 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:38:14,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:14,987 INFO L93 Difference]: Finished difference Result 2883 states and 4139 transitions. [2023-11-19 07:38:14,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:14,988 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 14 [2023-11-19 07:38:14,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:14,998 INFO L225 Difference]: With dead ends: 2883 [2023-11-19 07:38:14,998 INFO L226 Difference]: Without dead ends: 1449 [2023-11-19 07:38:15,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:15,004 INFO L413 NwaCegarLoop]: 2063 mSDtfsCounter, 4 mSDsluCounter, 6180 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8243 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:15,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8243 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:15,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1449 states. [2023-11-19 07:38:15,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1449 to 1449. [2023-11-19 07:38:15,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1449 states, 1208 states have (on average 1.5687086092715232) internal successors, (1895), 1333 states have internal predecessors, (1895), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1449 states to 1449 states and 2076 transitions. [2023-11-19 07:38:15,069 INFO L78 Accepts]: Start accepts. Automaton has 1449 states and 2076 transitions. Word has length 14 [2023-11-19 07:38:15,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:15,070 INFO L495 AbstractCegarLoop]: Abstraction has 1449 states and 2076 transitions. [2023-11-19 07:38:15,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:38:15,070 INFO L276 IsEmpty]: Start isEmpty. Operand 1449 states and 2076 transitions. [2023-11-19 07:38:15,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 07:38:15,071 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:15,071 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:15,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:15,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:15,292 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:15,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash 663800234, now seen corresponding path program 2 times [2023-11-19 07:38:15,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:15,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507551116] [2023-11-19 07:38:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:15,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:15,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:15,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:38:15,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:38:15,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507551116] [2023-11-19 07:38:15,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507551116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:15,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979448972] [2023-11-19 07:38:15,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:38:15,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:15,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:15,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:15,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:38:16,337 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-19 07:38:16,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:38:16,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:16,345 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:38:16,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:16,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979448972] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:16,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:38:16,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-19 07:38:16,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070467650] [2023-11-19 07:38:16,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:16,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:16,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:16,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:16,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-19 07:38:16,421 INFO L87 Difference]: Start difference. First operand 1449 states and 2076 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:16,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:16,651 INFO L93 Difference]: Finished difference Result 1449 states and 2076 transitions. [2023-11-19 07:38:16,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:16,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-19 07:38:16,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:16,663 INFO L225 Difference]: With dead ends: 1449 [2023-11-19 07:38:16,663 INFO L226 Difference]: Without dead ends: 1447 [2023-11-19 07:38:16,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:38:16,665 INFO L413 NwaCegarLoop]: 2044 mSDtfsCounter, 712 mSDsluCounter, 5382 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 733 SdHoareTripleChecker+Valid, 7426 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:16,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [733 Valid, 7426 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:38:16,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2023-11-19 07:38:16,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1447. [2023-11-19 07:38:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1447 states, 1208 states have (on average 1.5670529801324504) internal successors, (1893), 1331 states have internal predecessors, (1893), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:16,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1447 states to 1447 states and 2074 transitions. [2023-11-19 07:38:16,742 INFO L78 Accepts]: Start accepts. Automaton has 1447 states and 2074 transitions. Word has length 23 [2023-11-19 07:38:16,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:16,743 INFO L495 AbstractCegarLoop]: Abstraction has 1447 states and 2074 transitions. [2023-11-19 07:38:16,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:16,743 INFO L276 IsEmpty]: Start isEmpty. Operand 1447 states and 2074 transitions. [2023-11-19 07:38:16,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-19 07:38:16,744 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:16,745 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:16,778 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:16,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:16,960 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:16,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:16,960 INFO L85 PathProgramCache]: Analyzing trace with hash -694506588, now seen corresponding path program 1 times [2023-11-19 07:38:16,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:16,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926694966] [2023-11-19 07:38:16,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:16,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:17,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:38:17,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:17,239 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:38:17,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926694966] [2023-11-19 07:38:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926694966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:17,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:17,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:17,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157190977] [2023-11-19 07:38:17,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:17,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:17,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:17,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:17,241 INFO L87 Difference]: Start difference. First operand 1447 states and 2074 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:17,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:17,324 INFO L93 Difference]: Finished difference Result 2876 states and 4131 transitions. [2023-11-19 07:38:17,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:17,325 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2023-11-19 07:38:17,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:17,335 INFO L225 Difference]: With dead ends: 2876 [2023-11-19 07:38:17,335 INFO L226 Difference]: Without dead ends: 1450 [2023-11-19 07:38:17,340 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:17,341 INFO L413 NwaCegarLoop]: 2061 mSDtfsCounter, 1 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4116 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:17,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4116 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:17,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1450 states. [2023-11-19 07:38:17,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1450 to 1450. [2023-11-19 07:38:17,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1450 states, 1211 states have (on average 1.565648224607762) internal successors, (1896), 1334 states have internal predecessors, (1896), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:17,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1450 states to 1450 states and 2077 transitions. [2023-11-19 07:38:17,396 INFO L78 Accepts]: Start accepts. Automaton has 1450 states and 2077 transitions. Word has length 28 [2023-11-19 07:38:17,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:17,396 INFO L495 AbstractCegarLoop]: Abstraction has 1450 states and 2077 transitions. [2023-11-19 07:38:17,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 1450 states and 2077 transitions. [2023-11-19 07:38:17,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 07:38:17,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:17,398 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:17,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:38:17,398 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:17,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:17,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1185412775, now seen corresponding path program 1 times [2023-11-19 07:38:17,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:17,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718585637] [2023-11-19 07:38:17,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:17,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:17,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 07:38:17,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:17,737 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-19 07:38:17,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718585637] [2023-11-19 07:38:17,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718585637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:17,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363093523] [2023-11-19 07:38:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:17,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:17,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:17,740 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:17,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:38:18,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:18,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 1268 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:18,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:38:18,513 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:38:18,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363093523] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:18,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:18,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:38:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153489938] [2023-11-19 07:38:18,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:18,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:38:18,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:18,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:38:18,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:38:18,664 INFO L87 Difference]: Start difference. First operand 1450 states and 2077 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:38:18,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:18,971 INFO L93 Difference]: Finished difference Result 2902 states and 4162 transitions. [2023-11-19 07:38:18,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 07:38:18,972 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 31 [2023-11-19 07:38:18,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:18,983 INFO L225 Difference]: With dead ends: 2902 [2023-11-19 07:38:18,983 INFO L226 Difference]: Without dead ends: 1467 [2023-11-19 07:38:18,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:38:18,990 INFO L413 NwaCegarLoop]: 2055 mSDtfsCounter, 7 mSDsluCounter, 14364 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16419 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:18,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16419 Invalid, 111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:38:18,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2023-11-19 07:38:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1467. [2023-11-19 07:38:19,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1467 states, 1229 states have (on average 1.5565500406834825) internal successors, (1913), 1351 states have internal predecessors, (1913), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:19,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1467 states to 1467 states and 2094 transitions. [2023-11-19 07:38:19,047 INFO L78 Accepts]: Start accepts. Automaton has 1467 states and 2094 transitions. Word has length 31 [2023-11-19 07:38:19,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:19,048 INFO L495 AbstractCegarLoop]: Abstraction has 1467 states and 2094 transitions. [2023-11-19 07:38:19,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-19 07:38:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1467 states and 2094 transitions. [2023-11-19 07:38:19,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:38:19,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:19,052 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:19,080 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:19,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:19,268 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:19,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:19,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2146687360, now seen corresponding path program 1 times [2023-11-19 07:38:19,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:19,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892169989] [2023-11-19 07:38:19,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:19,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:19,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:19,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:19,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:19,591 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:38:19,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:19,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892169989] [2023-11-19 07:38:19,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892169989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:19,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:19,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:19,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316769802] [2023-11-19 07:38:19,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:19,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:19,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:19,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:19,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:19,593 INFO L87 Difference]: Start difference. First operand 1467 states and 2094 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:19,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:19,675 INFO L93 Difference]: Finished difference Result 1481 states and 2110 transitions. [2023-11-19 07:38:19,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:19,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-11-19 07:38:19,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:19,686 INFO L225 Difference]: With dead ends: 1481 [2023-11-19 07:38:19,687 INFO L226 Difference]: Without dead ends: 1479 [2023-11-19 07:38:19,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:19,689 INFO L413 NwaCegarLoop]: 2058 mSDtfsCounter, 3 mSDsluCounter, 2053 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4111 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:19,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4111 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:19,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2023-11-19 07:38:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 1477. [2023-11-19 07:38:19,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1477 states, 1239 states have (on average 1.5544794188861986) internal successors, (1926), 1361 states have internal predecessors, (1926), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1477 states to 1477 states and 2107 transitions. [2023-11-19 07:38:19,747 INFO L78 Accepts]: Start accepts. Automaton has 1477 states and 2107 transitions. Word has length 50 [2023-11-19 07:38:19,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:19,747 INFO L495 AbstractCegarLoop]: Abstraction has 1477 states and 2107 transitions. [2023-11-19 07:38:19,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:19,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1477 states and 2107 transitions. [2023-11-19 07:38:19,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-19 07:38:19,749 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:19,749 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:19,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 07:38:19,749 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:19,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:19,750 INFO L85 PathProgramCache]: Analyzing trace with hash 2146689089, now seen corresponding path program 1 times [2023-11-19 07:38:19,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:19,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555471479] [2023-11-19 07:38:19,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:19,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:19,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:20,009 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-19 07:38:20,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:20,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555471479] [2023-11-19 07:38:20,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555471479] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:20,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:20,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:38:20,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143187272] [2023-11-19 07:38:20,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:20,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:38:20,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:20,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:38:20,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:20,012 INFO L87 Difference]: Start difference. First operand 1477 states and 2107 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:20,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:20,072 INFO L93 Difference]: Finished difference Result 1477 states and 2107 transitions. [2023-11-19 07:38:20,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:38:20,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2023-11-19 07:38:20,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:20,082 INFO L225 Difference]: With dead ends: 1477 [2023-11-19 07:38:20,082 INFO L226 Difference]: Without dead ends: 1476 [2023-11-19 07:38:20,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:38:20,084 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 0 mSDsluCounter, 2055 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4114 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:20,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4114 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:20,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2023-11-19 07:38:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1472. [2023-11-19 07:38:20,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1472 states, 1235 states have (on average 1.5546558704453441) internal successors, (1920), 1356 states have internal predecessors, (1920), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:20,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1472 states to 1472 states and 2101 transitions. [2023-11-19 07:38:20,140 INFO L78 Accepts]: Start accepts. Automaton has 1472 states and 2101 transitions. Word has length 50 [2023-11-19 07:38:20,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:20,142 INFO L495 AbstractCegarLoop]: Abstraction has 1472 states and 2101 transitions. [2023-11-19 07:38:20,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:20,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1472 states and 2101 transitions. [2023-11-19 07:38:20,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-19 07:38:20,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:20,145 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:20,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 07:38:20,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:20,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:20,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1550175191, now seen corresponding path program 1 times [2023-11-19 07:38:20,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:20,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479891566] [2023-11-19 07:38:20,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:20,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:20,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:20,548 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:38:20,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:20,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479891566] [2023-11-19 07:38:20,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479891566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:20,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69380716] [2023-11-19 07:38:20,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:20,549 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:20,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:20,550 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:20,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:38:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:21,358 INFO L262 TraceCheckSpWp]: Trace formula consists of 1439 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:38:21,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:38:21,383 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:21,420 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-19 07:38:21,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69380716] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:21,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:21,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-19 07:38:21,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387885594] [2023-11-19 07:38:21,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:21,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:38:21,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:21,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:38:21,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:21,425 INFO L87 Difference]: Start difference. First operand 1472 states and 2101 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:21,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:21,532 INFO L93 Difference]: Finished difference Result 2918 states and 4178 transitions. [2023-11-19 07:38:21,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:38:21,533 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2023-11-19 07:38:21,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:21,544 INFO L225 Difference]: With dead ends: 2918 [2023-11-19 07:38:21,545 INFO L226 Difference]: Without dead ends: 1490 [2023-11-19 07:38:21,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:21,551 INFO L413 NwaCegarLoop]: 2059 mSDtfsCounter, 4 mSDsluCounter, 4110 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 6169 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:21,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 6169 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 07:38:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2023-11-19 07:38:21,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1490. [2023-11-19 07:38:21,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1253 states have (on average 1.5466879489225858) internal successors, (1938), 1374 states have internal predecessors, (1938), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:21,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2119 transitions. [2023-11-19 07:38:21,608 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2119 transitions. Word has length 58 [2023-11-19 07:38:21,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:21,609 INFO L495 AbstractCegarLoop]: Abstraction has 1490 states and 2119 transitions. [2023-11-19 07:38:21,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2119 transitions. [2023-11-19 07:38:21,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-19 07:38:21,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:21,615 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:21,644 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:21,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-19 07:38:21,828 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:21,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:21,828 INFO L85 PathProgramCache]: Analyzing trace with hash 1330861276, now seen corresponding path program 1 times [2023-11-19 07:38:21,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:21,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426409626] [2023-11-19 07:38:21,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:21,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:22,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:22,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:22,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:38:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:38:22,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:22,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426409626] [2023-11-19 07:38:22,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426409626] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:22,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:22,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-19 07:38:22,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316699019] [2023-11-19 07:38:22,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:22,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:22,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:22,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:22,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:22,610 INFO L87 Difference]: Start difference. First operand 1490 states and 2119 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:38:26,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:26,008 INFO L93 Difference]: Finished difference Result 3168 states and 4577 transitions. [2023-11-19 07:38:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:26,009 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 67 [2023-11-19 07:38:26,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:26,024 INFO L225 Difference]: With dead ends: 3168 [2023-11-19 07:38:26,024 INFO L226 Difference]: Without dead ends: 1799 [2023-11-19 07:38:26,030 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:26,031 INFO L413 NwaCegarLoop]: 1879 mSDtfsCounter, 2909 mSDsluCounter, 3184 mSDsCounter, 0 mSdLazyCounter, 1021 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2959 SdHoareTripleChecker+Valid, 5063 SdHoareTripleChecker+Invalid, 1220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1021 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:26,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2959 Valid, 5063 Invalid, 1220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1021 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2023-11-19 07:38:26,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2023-11-19 07:38:26,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 1490. [2023-11-19 07:38:26,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1253 states have (on average 1.5458898643256185) internal successors, (1937), 1374 states have internal predecessors, (1937), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:26,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2118 transitions. [2023-11-19 07:38:26,104 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2118 transitions. Word has length 67 [2023-11-19 07:38:26,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:26,105 INFO L495 AbstractCegarLoop]: Abstraction has 1490 states and 2118 transitions. [2023-11-19 07:38:26,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-19 07:38:26,105 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2118 transitions. [2023-11-19 07:38:26,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:38:26,106 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:26,107 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:26,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 07:38:26,107 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:26,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:26,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1088730289, now seen corresponding path program 1 times [2023-11-19 07:38:26,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:26,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818400163] [2023-11-19 07:38:26,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:26,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:26,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:38:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:38:26,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:26,537 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:38:26,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:26,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818400163] [2023-11-19 07:38:26,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818400163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:26,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:26,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:26,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242842279] [2023-11-19 07:38:26,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:26,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:26,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:26,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:26,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:26,541 INFO L87 Difference]: Start difference. First operand 1490 states and 2118 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:38:30,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:30,500 INFO L93 Difference]: Finished difference Result 2134 states and 3109 transitions. [2023-11-19 07:38:30,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:38:30,501 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 76 [2023-11-19 07:38:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:30,515 INFO L225 Difference]: With dead ends: 2134 [2023-11-19 07:38:30,516 INFO L226 Difference]: Without dead ends: 2132 [2023-11-19 07:38:30,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:30,518 INFO L413 NwaCegarLoop]: 1916 mSDtfsCounter, 1319 mSDsluCounter, 3528 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1337 SdHoareTripleChecker+Valid, 5444 SdHoareTripleChecker+Invalid, 1356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:30,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1337 Valid, 5444 Invalid, 1356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-19 07:38:30,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2132 states. [2023-11-19 07:38:30,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2132 to 1494. [2023-11-19 07:38:30,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1257 states have (on average 1.5449482895783613) internal successors, (1942), 1378 states have internal predecessors, (1942), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 2123 transitions. [2023-11-19 07:38:30,604 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 2123 transitions. Word has length 76 [2023-11-19 07:38:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:30,605 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 2123 transitions. [2023-11-19 07:38:30,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 3 states have internal predecessors, (43), 1 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:38:30,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 2123 transitions. [2023-11-19 07:38:30,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-19 07:38:30,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:30,626 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:30,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-19 07:38:30,627 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:30,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:30,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1925880215, now seen corresponding path program 2 times [2023-11-19 07:38:30,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:30,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44399534] [2023-11-19 07:38:30,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:30,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:30,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:31,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-19 07:38:31,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44399534] [2023-11-19 07:38:31,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44399534] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:31,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628817551] [2023-11-19 07:38:31,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:38:31,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:31,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:31,134 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:31,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:38:32,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:38:32,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:38:32,035 INFO L262 TraceCheckSpWp]: Trace formula consists of 1553 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:38:32,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-19 07:38:32,120 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:32,229 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-19 07:38:32,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628817551] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:32,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:32,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-19 07:38:32,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867703021] [2023-11-19 07:38:32,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:32,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-19 07:38:32,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:32,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-19 07:38:32,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:38:32,233 INFO L87 Difference]: Start difference. First operand 1494 states and 2123 transitions. Second operand has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:32,749 INFO L93 Difference]: Finished difference Result 2971 states and 4238 transitions. [2023-11-19 07:38:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-19 07:38:32,750 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 76 [2023-11-19 07:38:32,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:32,760 INFO L225 Difference]: With dead ends: 2971 [2023-11-19 07:38:32,760 INFO L226 Difference]: Without dead ends: 1530 [2023-11-19 07:38:32,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2023-11-19 07:38:32,766 INFO L413 NwaCegarLoop]: 2055 mSDtfsCounter, 12 mSDsluCounter, 10248 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 12303 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:32,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 12303 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 07:38:32,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1530 states. [2023-11-19 07:38:32,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1530 to 1529. [2023-11-19 07:38:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1529 states, 1293 states have (on average 1.5290023201856149) internal successors, (1977), 1413 states have internal predecessors, (1977), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:32,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1529 states to 1529 states and 2158 transitions. [2023-11-19 07:38:32,862 INFO L78 Accepts]: Start accepts. Automaton has 1529 states and 2158 transitions. Word has length 76 [2023-11-19 07:38:32,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:32,863 INFO L495 AbstractCegarLoop]: Abstraction has 1529 states and 2158 transitions. [2023-11-19 07:38:32,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.785714285714286) internal successors, (67), 14 states have internal predecessors, (67), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-19 07:38:32,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1529 states and 2158 transitions. [2023-11-19 07:38:32,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-19 07:38:32,869 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:32,869 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:32,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:33,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 07:38:33,092 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:33,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:33,093 INFO L85 PathProgramCache]: Analyzing trace with hash 650028810, now seen corresponding path program 1 times [2023-11-19 07:38:33,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:33,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707241033] [2023-11-19 07:38:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:33,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:33,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:33,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:33,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:38:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:33,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:38:33,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:33,534 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:38:33,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707241033] [2023-11-19 07:38:33,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707241033] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400262608] [2023-11-19 07:38:33,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:33,537 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:33,555 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:38:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:34,354 INFO L262 TraceCheckSpWp]: Trace formula consists of 1676 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:38:34,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:34,397 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:38:34,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:38:34,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400262608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:34,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:38:34,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-11-19 07:38:34,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140512470] [2023-11-19 07:38:34,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:34,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:38:34,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:34,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:38:34,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:34,400 INFO L87 Difference]: Start difference. First operand 1529 states and 2158 transitions. Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:38:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:34,524 INFO L93 Difference]: Finished difference Result 1810 states and 2576 transitions. [2023-11-19 07:38:34,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:38:34,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 80 [2023-11-19 07:38:34,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:34,536 INFO L225 Difference]: With dead ends: 1810 [2023-11-19 07:38:34,536 INFO L226 Difference]: Without dead ends: 1809 [2023-11-19 07:38:34,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:38:34,538 INFO L413 NwaCegarLoop]: 2455 mSDtfsCounter, 799 mSDsluCounter, 2050 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 4505 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:34,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 4505 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 07:38:34,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1809 states. [2023-11-19 07:38:34,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1809 to 1528. [2023-11-19 07:38:34,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1528 states, 1293 states have (on average 1.528228924980665) internal successors, (1976), 1412 states have internal predecessors, (1976), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:34,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1528 states to 1528 states and 2157 transitions. [2023-11-19 07:38:34,607 INFO L78 Accepts]: Start accepts. Automaton has 1528 states and 2157 transitions. Word has length 80 [2023-11-19 07:38:34,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:34,608 INFO L495 AbstractCegarLoop]: Abstraction has 1528 states and 2157 transitions. [2023-11-19 07:38:34,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:38:34,608 INFO L276 IsEmpty]: Start isEmpty. Operand 1528 states and 2157 transitions. [2023-11-19 07:38:34,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-19 07:38:34,609 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:34,610 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:34,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:34,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 07:38:34,824 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:34,824 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:34,824 INFO L85 PathProgramCache]: Analyzing trace with hash -1323940326, now seen corresponding path program 1 times [2023-11-19 07:38:34,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:34,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318701553] [2023-11-19 07:38:34,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:34,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:35,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:35,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:35,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:38:35,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:35,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:38:35,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:35,353 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:38:35,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:35,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318701553] [2023-11-19 07:38:35,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318701553] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:38:35,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706768417] [2023-11-19 07:38:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:35,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:38:35,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:38:35,360 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:38:35,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:38:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:36,229 INFO L262 TraceCheckSpWp]: Trace formula consists of 1677 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:38:36,234 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:38:36,279 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:38:36,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:38:36,333 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-19 07:38:36,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706768417] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:38:36,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:38:36,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2023-11-19 07:38:36,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474332451] [2023-11-19 07:38:36,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:38:36,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-19 07:38:36,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:36,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-19 07:38:36,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:38:36,337 INFO L87 Difference]: Start difference. First operand 1528 states and 2157 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:38:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 07:38:41,309 INFO L93 Difference]: Finished difference Result 3010 states and 4407 transitions. [2023-11-19 07:38:41,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:38:41,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 81 [2023-11-19 07:38:41,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 07:38:41,344 INFO L225 Difference]: With dead ends: 3010 [2023-11-19 07:38:41,351 INFO L226 Difference]: Without dead ends: 3009 [2023-11-19 07:38:41,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-11-19 07:38:41,353 INFO L413 NwaCegarLoop]: 2329 mSDtfsCounter, 2877 mSDsluCounter, 7781 mSDsCounter, 0 mSdLazyCounter, 1560 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2922 SdHoareTripleChecker+Valid, 10110 SdHoareTripleChecker+Invalid, 1835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-11-19 07:38:41,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2922 Valid, 10110 Invalid, 1835 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [275 Valid, 1560 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-11-19 07:38:41,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3009 states. [2023-11-19 07:38:41,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3009 to 1540. [2023-11-19 07:38:41,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1540 states, 1305 states have (on average 1.5256704980842912) internal successors, (1991), 1424 states have internal predecessors, (1991), 94 states have call successors, (94), 31 states have call predecessors, (94), 30 states have return successors, (87), 86 states have call predecessors, (87), 87 states have call successors, (87) [2023-11-19 07:38:41,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1540 states to 1540 states and 2172 transitions. [2023-11-19 07:38:41,434 INFO L78 Accepts]: Start accepts. Automaton has 1540 states and 2172 transitions. Word has length 81 [2023-11-19 07:38:41,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 07:38:41,434 INFO L495 AbstractCegarLoop]: Abstraction has 1540 states and 2172 transitions. [2023-11-19 07:38:41,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-19 07:38:41,435 INFO L276 IsEmpty]: Start isEmpty. Operand 1540 states and 2172 transitions. [2023-11-19 07:38:41,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-19 07:38:41,436 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 07:38:41,436 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:38:41,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:38:41,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_436992eb-2e65-46e1-a498-c01974138746/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 07:38:41,660 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [printable_stringErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, printable_stringErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 132 more)] === [2023-11-19 07:38:41,660 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:38:41,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1616257582, now seen corresponding path program 1 times [2023-11-19 07:38:41,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:38:41,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755081582] [2023-11-19 07:38:41,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:38:41,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:38:41,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-19 07:38:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-19 07:38:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-19 07:38:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2023-11-19 07:38:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:38:42,136 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2023-11-19 07:38:42,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:38:42,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755081582] [2023-11-19 07:38:42,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755081582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:38:42,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:38:42,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:38:42,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385246738] [2023-11-19 07:38:42,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:38:42,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:38:42,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:38:42,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:38:42,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:38:42,139 INFO L87 Difference]: Start difference. First operand 1540 states and 2172 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4)