./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/busybox-1.22.0/tee-2.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/busybox-1.22.0/tee-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash bab52eb5923c15e4bc9c70f58b3e07f531d9c2f4fa12be32117f6f5f5ee2181e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:48:10,070 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:48:10,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-26 10:48:10,158 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:48:10,158 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:48:10,187 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:48:10,188 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:48:10,188 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:48:10,189 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:48:10,190 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:48:10,190 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:48:10,191 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:48:10,192 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:48:10,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:48:10,201 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:48:10,202 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:48:10,203 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:48:10,204 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:48:10,205 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:48:10,205 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:48:10,206 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:48:10,206 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:48:10,207 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:48:10,207 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:48:10,208 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:48:10,208 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:48:10,209 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:48:10,210 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:48:10,210 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:48:10,211 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:48:10,212 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:10,212 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:48:10,213 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:48:10,213 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:48:10,213 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:48:10,214 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:48:10,214 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:48:10,214 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:48:10,215 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:48:10,215 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:48:10,215 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:48:10,216 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_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bab52eb5923c15e4bc9c70f58b3e07f531d9c2f4fa12be32117f6f5f5ee2181e [2023-11-26 10:48:10,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:48:10,630 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:48:10,633 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:48:10,634 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:48:10,635 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:48:10,636 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/busybox-1.22.0/tee-2.i [2023-11-26 10:48:13,680 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:48:14,217 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:48:14,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/sv-benchmarks/c/busybox-1.22.0/tee-2.i [2023-11-26 10:48:14,259 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/data/0c9b26d4b/426da229e7c44ec4853d13d15603d248/FLAG9d0cff11f [2023-11-26 10:48:14,281 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/data/0c9b26d4b/426da229e7c44ec4853d13d15603d248 [2023-11-26 10:48:14,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:48:14,290 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:48:14,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:14,296 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:48:14,301 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:48:14,302 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:14" (1/1) ... [2023-11-26 10:48:14,303 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68af5279 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:14, skipping insertion in model container [2023-11-26 10:48:14,303 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:48:14" (1/1) ... [2023-11-26 10:48:14,407 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:48:15,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:15,964 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:48:16,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:48:16,353 WARN L675 CHandler]: The function fflush is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:16,353 WARN L675 CHandler]: The function strerror is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:16,353 WARN L675 CHandler]: The function fopen is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:16,354 WARN L675 CHandler]: The function ferror is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:16,354 WARN L675 CHandler]: The function setbuf is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:16,359 WARN L675 CHandler]: The function strtoul is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:16,359 WARN L675 CHandler]: The function fwrite is called, but not defined or handled by StandardFunctionHandler. [2023-11-26 10:48:16,368 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:48:16,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16 WrapperNode [2023-11-26 10:48:16,369 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:48:16,370 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:16,370 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:48:16,372 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:48:16,379 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,566 INFO L138 Inliner]: procedures = 575, calls = 420, calls flagged for inlining = 28, calls inlined = 26, statements flattened = 1755 [2023-11-26 10:48:16,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:48:16,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:48:16,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:48:16,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:48:16,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,594 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,607 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2023-11-26 10:48:16,608 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,608 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,741 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,785 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:48:16,786 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:48:16,787 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:48:16,787 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:48:16,788 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (1/1) ... [2023-11-26 10:48:16,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:48:16,806 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:16,823 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:48:16,849 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:48:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure strerror [2023-11-26 10:48:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:48:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2023-11-26 10:48:16,866 INFO L130 BoogieDeclarations]: Found specification of procedure xzalloc [2023-11-26 10:48:16,866 INFO L138 BoogieDeclarations]: Found implementation of procedure xzalloc [2023-11-26 10:48:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-26 10:48:16,868 INFO L130 BoogieDeclarations]: Found specification of procedure bb_verror_msg [2023-11-26 10:48:16,869 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_verror_msg [2023-11-26 10:48:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-26 10:48:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-26 10:48:16,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:48:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2023-11-26 10:48:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:48:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-26 10:48:16,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:48:16,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:48:16,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2023-11-26 10:48:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2023-11-26 10:48:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure xmalloc [2023-11-26 10:48:16,872 INFO L138 BoogieDeclarations]: Found implementation of procedure xmalloc [2023-11-26 10:48:16,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-26 10:48:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-26 10:48:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2023-11-26 10:48:16,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2023-11-26 10:48:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2023-11-26 10:48:16,874 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-26 10:48:16,874 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-26 10:48:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:48:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-26 10:48:16,875 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2023-11-26 10:48:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-26 10:48:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-26 10:48:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-11-26 10:48:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure bb_error_msg_and_die [2023-11-26 10:48:16,876 INFO L138 BoogieDeclarations]: Found implementation of procedure bb_error_msg_and_die [2023-11-26 10:48:16,876 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2023-11-26 10:48:16,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-26 10:48:17,439 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:48:17,442 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:48:19,147 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:48:19,252 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:48:19,253 INFO L309 CfgBuilder]: Removed 30 assume(true) statements. [2023-11-26 10:48:19,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:19 BoogieIcfgContainer [2023-11-26 10:48:19,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:48:19,258 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:48:19,258 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:48:19,261 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:48:19,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:48:14" (1/3) ... [2023-11-26 10:48:19,263 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dce98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:19, skipping insertion in model container [2023-11-26 10:48:19,263 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:48:16" (2/3) ... [2023-11-26 10:48:19,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27dce98e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:48:19, skipping insertion in model container [2023-11-26 10:48:19,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:48:19" (3/3) ... [2023-11-26 10:48:19,269 INFO L112 eAbstractionObserver]: Analyzing ICFG tee-2.i [2023-11-26 10:48:19,291 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:48:19,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2023-11-26 10:48:19,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:48:19,368 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;@22224868, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:48:19,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2023-11-26 10:48:19,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 480 states, 383 states have (on average 1.7467362924281984) internal successors, (669), 447 states have internal predecessors, (669), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2023-11-26 10:48:19,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 10:48:19,384 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:19,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 10:48:19,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:19,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:19,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1647434, now seen corresponding path program 1 times [2023-11-26 10:48:19,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:19,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964673597] [2023-11-26 10:48:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:19,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:19,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:19,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964673597] [2023-11-26 10:48:19,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964673597] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:19,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:19,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 10:48:19,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868500417] [2023-11-26 10:48:19,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:19,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:19,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:19,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:19,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:19,998 INFO L87 Difference]: Start difference. First operand has 480 states, 383 states have (on average 1.7467362924281984) internal successors, (669), 447 states have internal predecessors, (669), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:20,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:20,242 INFO L93 Difference]: Finished difference Result 953 states and 1449 transitions. [2023-11-26 10:48:20,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:20,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2023-11-26 10:48:20,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:20,261 INFO L225 Difference]: With dead ends: 953 [2023-11-26 10:48:20,261 INFO L226 Difference]: Without dead ends: 474 [2023-11-26 10:48:20,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:20,272 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1266 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:20,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1266 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:20,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2023-11-26 10:48:20,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 474. [2023-11-26 10:48:20,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 379 states have (on average 1.646437994722955) internal successors, (624), 447 states have internal predecessors, (624), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:20,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 668 transitions. [2023-11-26 10:48:20,353 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 668 transitions. Word has length 3 [2023-11-26 10:48:20,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:20,353 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 668 transitions. [2023-11-26 10:48:20,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:20,354 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 668 transitions. [2023-11-26 10:48:20,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:48:20,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:20,355 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 10:48:20,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:48:20,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:20,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:20,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1834407473, now seen corresponding path program 1 times [2023-11-26 10:48:20,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:20,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264304277] [2023-11-26 10:48:20,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:20,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:20,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264304277] [2023-11-26 10:48:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264304277] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:20,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473979880] [2023-11-26 10:48:20,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:20,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:20,553 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:20,559 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:20,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:48:20,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:20,944 INFO L262 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:20,949 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:20,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:20,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:20,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473979880] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:20,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:20,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-26 10:48:20,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594642712] [2023-11-26 10:48:20,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:20,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:20,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:21,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:21,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:21,002 INFO L87 Difference]: Start difference. First operand 474 states and 668 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:21,171 INFO L93 Difference]: Finished difference Result 474 states and 668 transitions. [2023-11-26 10:48:21,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:21,173 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 10:48:21,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:21,180 INFO L225 Difference]: With dead ends: 474 [2023-11-26 10:48:21,181 INFO L226 Difference]: Without dead ends: 473 [2023-11-26 10:48:21,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:21,183 INFO L413 NwaCegarLoop]: 630 mSDtfsCounter, 5 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:21,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1259 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:21,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-26 10:48:21,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 473. [2023-11-26 10:48:21,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 473 states, 379 states have (on average 1.6437994722955145) internal successors, (623), 446 states have internal predecessors, (623), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:21,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 667 transitions. [2023-11-26 10:48:21,226 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 667 transitions. Word has length 6 [2023-11-26 10:48:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:21,226 INFO L495 AbstractCegarLoop]: Abstraction has 473 states and 667 transitions. [2023-11-26 10:48:21,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 667 transitions. [2023-11-26 10:48:21,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 10:48:21,227 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:21,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 10:48:21,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:21,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:21,435 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:21,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:21,437 INFO L85 PathProgramCache]: Analyzing trace with hash 1032057159, now seen corresponding path program 1 times [2023-11-26 10:48:21,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:21,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87679830] [2023-11-26 10:48:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:21,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:21,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:21,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87679830] [2023-11-26 10:48:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87679830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:21,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:21,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:21,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56348385] [2023-11-26 10:48:21,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:21,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:21,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:21,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:21,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:21,592 INFO L87 Difference]: Start difference. First operand 473 states and 667 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:21,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:21,719 INFO L93 Difference]: Finished difference Result 473 states and 667 transitions. [2023-11-26 10:48:21,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:21,720 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 10:48:21,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:21,725 INFO L225 Difference]: With dead ends: 473 [2023-11-26 10:48:21,725 INFO L226 Difference]: Without dead ends: 472 [2023-11-26 10:48:21,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:21,733 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 0 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:21,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1260 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:21,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2023-11-26 10:48:21,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 470. [2023-11-26 10:48:21,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 470 states, 377 states have (on average 1.6445623342175066) internal successors, (620), 443 states have internal predecessors, (620), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 664 transitions. [2023-11-26 10:48:21,758 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 664 transitions. Word has length 7 [2023-11-26 10:48:21,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:21,759 INFO L495 AbstractCegarLoop]: Abstraction has 470 states and 664 transitions. [2023-11-26 10:48:21,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:48:21,760 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 664 transitions. [2023-11-26 10:48:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 10:48:21,761 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:21,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:21,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:48:21,762 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:21,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:21,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1674550236, now seen corresponding path program 1 times [2023-11-26 10:48:21,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:21,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303758373] [2023-11-26 10:48:21,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:21,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:21,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 10:48:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:22,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:22,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303758373] [2023-11-26 10:48:22,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303758373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:22,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175503118] [2023-11-26 10:48:22,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:22,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:22,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:22,003 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:22,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:48:22,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:22,298 INFO L262 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 10:48:22,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:22,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 10:48:22,315 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:22,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175503118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:22,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:22,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-11-26 10:48:22,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292765919] [2023-11-26 10:48:22,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:22,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:22,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:22,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:22,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:22,318 INFO L87 Difference]: Start difference. First operand 470 states and 664 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:22,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:22,453 INFO L93 Difference]: Finished difference Result 470 states and 664 transitions. [2023-11-26 10:48:22,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:22,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-26 10:48:22,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:22,458 INFO L225 Difference]: With dead ends: 470 [2023-11-26 10:48:22,458 INFO L226 Difference]: Without dead ends: 468 [2023-11-26 10:48:22,459 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:22,459 INFO L413 NwaCegarLoop]: 622 mSDtfsCounter, 480 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:22,460 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 780 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:22,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 468 states. [2023-11-26 10:48:22,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 468. [2023-11-26 10:48:22,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 377 states have (on average 1.6392572944297081) internal successors, (618), 441 states have internal predecessors, (618), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 662 transitions. [2023-11-26 10:48:22,481 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 662 transitions. Word has length 12 [2023-11-26 10:48:22,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:22,482 INFO L495 AbstractCegarLoop]: Abstraction has 468 states and 662 transitions. [2023-11-26 10:48:22,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:22,483 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 662 transitions. [2023-11-26 10:48:22,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 10:48:22,483 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:22,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:22,493 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:22,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:22,690 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:22,691 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash -371449411, now seen corresponding path program 1 times [2023-11-26 10:48:22,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:22,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585490032] [2023-11-26 10:48:22,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:22,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:22,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:22,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-26 10:48:22,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:22,905 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:22,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:22,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585490032] [2023-11-26 10:48:22,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585490032] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:22,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46649678] [2023-11-26 10:48:22,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:22,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:22,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:22,913 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:22,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:48:23,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:23,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:23,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:23,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:23,261 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:23,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46649678] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:23,292 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:23,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 7 [2023-11-26 10:48:23,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445732052] [2023-11-26 10:48:23,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:23,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:48:23,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:23,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:48:23,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:23,295 INFO L87 Difference]: Start difference. First operand 468 states and 662 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:23,480 INFO L93 Difference]: Finished difference Result 940 states and 1330 transitions. [2023-11-26 10:48:23,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:23,480 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 13 [2023-11-26 10:48:23,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:23,484 INFO L225 Difference]: With dead ends: 940 [2023-11-26 10:48:23,484 INFO L226 Difference]: Without dead ends: 477 [2023-11-26 10:48:23,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:23,487 INFO L413 NwaCegarLoop]: 629 mSDtfsCounter, 4 mSDsluCounter, 1254 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1883 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:23,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1883 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:23,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2023-11-26 10:48:23,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2023-11-26 10:48:23,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 386 states have (on average 1.6243523316062176) internal successors, (627), 450 states have internal predecessors, (627), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:23,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 671 transitions. [2023-11-26 10:48:23,513 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 671 transitions. Word has length 13 [2023-11-26 10:48:23,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:23,513 INFO L495 AbstractCegarLoop]: Abstraction has 477 states and 671 transitions. [2023-11-26 10:48:23,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:23,514 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 671 transitions. [2023-11-26 10:48:23,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 10:48:23,515 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:23,515 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:23,527 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:23,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:23,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:23,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:23,724 INFO L85 PathProgramCache]: Analyzing trace with hash 160833860, now seen corresponding path program 2 times [2023-11-26 10:48:23,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:23,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030775009] [2023-11-26 10:48:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:23,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:24,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:48:24,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:24,054 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:48:24,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030775009] [2023-11-26 10:48:24,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030775009] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:24,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000352584] [2023-11-26 10:48:24,055 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:24,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:24,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:24,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:24,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:48:24,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:48:24,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:24,346 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:48:24,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:24,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:48:24,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:24,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000352584] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:24,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:24,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2023-11-26 10:48:24,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081378256] [2023-11-26 10:48:24,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:24,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:24,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:24,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 10:48:24,394 INFO L87 Difference]: Start difference. First operand 477 states and 671 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:24,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:24,696 INFO L93 Difference]: Finished difference Result 477 states and 671 transitions. [2023-11-26 10:48:24,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:48:24,696 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2023-11-26 10:48:24,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:24,700 INFO L225 Difference]: With dead ends: 477 [2023-11-26 10:48:24,700 INFO L226 Difference]: Without dead ends: 475 [2023-11-26 10:48:24,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:48:24,701 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 479 mSDsluCounter, 1369 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:24,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 1984 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:48:24,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2023-11-26 10:48:24,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2023-11-26 10:48:24,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 386 states have (on average 1.6191709844559585) internal successors, (625), 448 states have internal predecessors, (625), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:24,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 669 transitions. [2023-11-26 10:48:24,724 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 669 transitions. Word has length 22 [2023-11-26 10:48:24,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:24,724 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 669 transitions. [2023-11-26 10:48:24,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:24,725 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 669 transitions. [2023-11-26 10:48:24,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 10:48:24,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:24,726 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:24,738 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:24,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:24,934 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:24,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1548907114, now seen corresponding path program 1 times [2023-11-26 10:48:24,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:24,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224530598] [2023-11-26 10:48:24,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:24,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:24,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:48:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:48:25,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:25,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224530598] [2023-11-26 10:48:25,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224530598] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:25,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:25,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:25,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36839612] [2023-11-26 10:48:25,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:25,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:25,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:25,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:25,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:25,153 INFO L87 Difference]: Start difference. First operand 475 states and 669 transitions. Second operand has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:25,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:25,297 INFO L93 Difference]: Finished difference Result 933 states and 1322 transitions. [2023-11-26 10:48:25,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:25,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2023-11-26 10:48:25,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:25,301 INFO L225 Difference]: With dead ends: 933 [2023-11-26 10:48:25,301 INFO L226 Difference]: Without dead ends: 478 [2023-11-26 10:48:25,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:25,304 INFO L413 NwaCegarLoop]: 627 mSDtfsCounter, 1 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1249 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:25,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1249 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:25,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 478 states. [2023-11-26 10:48:25,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 478 to 478. [2023-11-26 10:48:25,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 389 states have (on average 1.6143958868894601) internal successors, (628), 451 states have internal predecessors, (628), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:25,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 672 transitions. [2023-11-26 10:48:25,327 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 672 transitions. Word has length 27 [2023-11-26 10:48:25,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:25,327 INFO L495 AbstractCegarLoop]: Abstraction has 478 states and 672 transitions. [2023-11-26 10:48:25,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.0) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:25,328 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 672 transitions. [2023-11-26 10:48:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 10:48:25,329 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:25,329 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:25,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:48:25,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:25,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:25,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1855194900, now seen corresponding path program 1 times [2023-11-26 10:48:25,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:25,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221029318] [2023-11-26 10:48:25,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:25,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:25,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:48:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:25,497 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:48:25,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:25,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221029318] [2023-11-26 10:48:25,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221029318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:25,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:25,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:25,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901704867] [2023-11-26 10:48:25,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:25,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:25,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:25,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:25,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:25,500 INFO L87 Difference]: Start difference. First operand 478 states and 672 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:25,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:25,688 INFO L93 Difference]: Finished difference Result 749 states and 1080 transitions. [2023-11-26 10:48:25,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:25,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2023-11-26 10:48:25,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:25,694 INFO L225 Difference]: With dead ends: 749 [2023-11-26 10:48:25,694 INFO L226 Difference]: Without dead ends: 747 [2023-11-26 10:48:25,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:25,695 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 386 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1237 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:25,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1237 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:25,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2023-11-26 10:48:25,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 482. [2023-11-26 10:48:25,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 393 states have (on average 1.6106870229007633) internal successors, (633), 455 states have internal predecessors, (633), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:25,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 677 transitions. [2023-11-26 10:48:25,722 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 677 transitions. Word has length 29 [2023-11-26 10:48:25,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:25,722 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 677 transitions. [2023-11-26 10:48:25,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:25,722 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 677 transitions. [2023-11-26 10:48:25,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 10:48:25,723 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:25,724 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:25,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 10:48:25,724 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:25,724 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:25,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1636419853, now seen corresponding path program 1 times [2023-11-26 10:48:25,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:25,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225200585] [2023-11-26 10:48:25,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:25,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:25,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 10:48:25,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-26 10:48:25,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:25,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225200585] [2023-11-26 10:48:25,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225200585] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:25,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090360456] [2023-11-26 10:48:25,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:25,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:25,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:25,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:25,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:48:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:26,327 INFO L262 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:48:26,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:26,429 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:26,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:26,546 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 10:48:26,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090360456] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:26,547 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:26,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 7] total 14 [2023-11-26 10:48:26,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931290820] [2023-11-26 10:48:26,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:26,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:48:26,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:26,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:48:26,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:48:26,549 INFO L87 Difference]: Start difference. First operand 482 states and 677 transitions. Second operand has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:48:26,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:26,900 INFO L93 Difference]: Finished difference Result 967 states and 1363 transitions. [2023-11-26 10:48:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 10:48:26,901 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2023-11-26 10:48:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:26,904 INFO L225 Difference]: With dead ends: 967 [2023-11-26 10:48:26,905 INFO L226 Difference]: Without dead ends: 499 [2023-11-26 10:48:26,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:48:26,907 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 7 mSDsluCounter, 3095 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3716 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:26,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3716 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:48:26,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2023-11-26 10:48:26,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 499. [2023-11-26 10:48:26,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 411 states have (on average 1.5815085158150852) internal successors, (650), 472 states have internal predecessors, (650), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:26,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 694 transitions. [2023-11-26 10:48:26,931 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 694 transitions. Word has length 30 [2023-11-26 10:48:26,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:26,931 INFO L495 AbstractCegarLoop]: Abstraction has 499 states and 694 transitions. [2023-11-26 10:48:26,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.285714285714286) internal successors, (60), 14 states have internal predecessors, (60), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 10:48:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 694 transitions. [2023-11-26 10:48:26,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:48:26,933 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:26,933 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:26,949 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:27,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:27,141 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:27,142 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:27,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1765536262, now seen corresponding path program 1 times [2023-11-26 10:48:27,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:27,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636093876] [2023-11-26 10:48:27,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:27,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:27,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:27,432 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 10:48:27,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:27,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636093876] [2023-11-26 10:48:27,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636093876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:27,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:27,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:27,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533253928] [2023-11-26 10:48:27,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:27,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:27,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:27,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:27,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:27,434 INFO L87 Difference]: Start difference. First operand 499 states and 694 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:27,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:27,587 INFO L93 Difference]: Finished difference Result 513 states and 710 transitions. [2023-11-26 10:48:27,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:27,588 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-11-26 10:48:27,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:27,591 INFO L225 Difference]: With dead ends: 513 [2023-11-26 10:48:27,592 INFO L226 Difference]: Without dead ends: 511 [2023-11-26 10:48:27,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:27,593 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 3 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:27,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1244 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:27,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2023-11-26 10:48:27,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2023-11-26 10:48:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 509 states, 421 states have (on average 1.5748218527315914) internal successors, (663), 482 states have internal predecessors, (663), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:27,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 707 transitions. [2023-11-26 10:48:27,619 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 707 transitions. Word has length 49 [2023-11-26 10:48:27,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:27,619 INFO L495 AbstractCegarLoop]: Abstraction has 509 states and 707 transitions. [2023-11-26 10:48:27,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:27,620 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 707 transitions. [2023-11-26 10:48:27,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 10:48:27,621 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:27,621 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:27,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-26 10:48:27,622 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:27,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1765537991, now seen corresponding path program 1 times [2023-11-26 10:48:27,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:27,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554542798] [2023-11-26 10:48:27,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:27,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:27,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2023-11-26 10:48:27,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:27,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554542798] [2023-11-26 10:48:27,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554542798] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:27,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:27,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:48:27,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550342174] [2023-11-26 10:48:27,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:27,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:48:27,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:27,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:48:27,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:27,859 INFO L87 Difference]: Start difference. First operand 509 states and 707 transitions. Second operand has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:28,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:28,003 INFO L93 Difference]: Finished difference Result 509 states and 707 transitions. [2023-11-26 10:48:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:48:28,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2023-11-26 10:48:28,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:28,007 INFO L225 Difference]: With dead ends: 509 [2023-11-26 10:48:28,008 INFO L226 Difference]: Without dead ends: 508 [2023-11-26 10:48:28,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:48:28,011 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 0 mSDsluCounter, 622 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:28,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1247 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2023-11-26 10:48:28,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 504. [2023-11-26 10:48:28,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 504 states, 417 states have (on average 1.5755395683453237) internal successors, (657), 477 states have internal predecessors, (657), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:28,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 701 transitions. [2023-11-26 10:48:28,042 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 701 transitions. Word has length 49 [2023-11-26 10:48:28,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:28,042 INFO L495 AbstractCegarLoop]: Abstraction has 504 states and 701 transitions. [2023-11-26 10:48:28,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:28,043 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 701 transitions. [2023-11-26 10:48:28,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 10:48:28,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:28,045 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:28,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 10:48:28,046 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:28,046 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:28,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1136824805, now seen corresponding path program 1 times [2023-11-26 10:48:28,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:28,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843831115] [2023-11-26 10:48:28,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:28,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:28,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:28,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:28,279 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:48:28,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843831115] [2023-11-26 10:48:28,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843831115] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:28,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95430010] [2023-11-26 10:48:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:28,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:28,280 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:28,281 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:28,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:48:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:28,742 INFO L262 TraceCheckSpWp]: Trace formula consists of 664 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:28,746 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:48:28,769 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:28,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95430010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:28,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:28,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-26 10:48:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891774318] [2023-11-26 10:48:28,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:28,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:28,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:28,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:28,772 INFO L87 Difference]: Start difference. First operand 504 states and 701 transitions. Second operand has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:29,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:29,038 INFO L93 Difference]: Finished difference Result 772 states and 1106 transitions. [2023-11-26 10:48:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:29,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 51 [2023-11-26 10:48:29,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:29,043 INFO L225 Difference]: With dead ends: 772 [2023-11-26 10:48:29,043 INFO L226 Difference]: Without dead ends: 771 [2023-11-26 10:48:29,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:29,044 INFO L413 NwaCegarLoop]: 1005 mSDtfsCounter, 772 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:29,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1866 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:48:29,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2023-11-26 10:48:29,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 503. [2023-11-26 10:48:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 417 states have (on average 1.5731414868105515) internal successors, (656), 476 states have internal predecessors, (656), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:29,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 700 transitions. [2023-11-26 10:48:29,071 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 700 transitions. Word has length 51 [2023-11-26 10:48:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:29,071 INFO L495 AbstractCegarLoop]: Abstraction has 503 states and 700 transitions. [2023-11-26 10:48:29,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 7.333333333333333) internal successors, (22), 4 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:29,071 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 700 transitions. [2023-11-26 10:48:29,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 10:48:29,072 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:29,072 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:29,085 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 10:48:29,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:29,280 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:29,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:29,280 INFO L85 PathProgramCache]: Analyzing trace with hash 881830992, now seen corresponding path program 1 times [2023-11-26 10:48:29,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:29,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604562455] [2023-11-26 10:48:29,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:29,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:29,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:29,562 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:48:29,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:29,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604562455] [2023-11-26 10:48:29,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604562455] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:29,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996149447] [2023-11-26 10:48:29,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:29,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:29,563 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:29,564 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:29,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:48:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:29,993 INFO L262 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:30,000 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:30,035 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:48:30,035 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:30,072 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:48:30,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996149447] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:30,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:30,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 10:48:30,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371467382] [2023-11-26 10:48:30,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:30,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:48:30,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:30,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:48:30,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:30,075 INFO L87 Difference]: Start difference. First operand 503 states and 700 transitions. Second operand has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:30,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:30,590 INFO L93 Difference]: Finished difference Result 1576 states and 2322 transitions. [2023-11-26 10:48:30,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:30,590 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2023-11-26 10:48:30,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:30,602 INFO L225 Difference]: With dead ends: 1576 [2023-11-26 10:48:30,602 INFO L226 Difference]: Without dead ends: 1575 [2023-11-26 10:48:30,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:30,604 INFO L413 NwaCegarLoop]: 619 mSDtfsCounter, 2310 mSDsluCounter, 2638 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2334 SdHoareTripleChecker+Valid, 3257 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:30,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2334 Valid, 3257 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:48:30,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2023-11-26 10:48:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 515. [2023-11-26 10:48:30,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 429 states have (on average 1.564102564102564) internal successors, (671), 488 states have internal predecessors, (671), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:30,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 715 transitions. [2023-11-26 10:48:30,653 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 715 transitions. Word has length 52 [2023-11-26 10:48:30,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:30,654 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 715 transitions. [2023-11-26 10:48:30,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.166666666666667) internal successors, (37), 7 states have internal predecessors, (37), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:30,654 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 715 transitions. [2023-11-26 10:48:30,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 10:48:30,655 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:30,656 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:30,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:30,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 10:48:30,864 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:30,865 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:30,865 INFO L85 PathProgramCache]: Analyzing trace with hash 810645167, now seen corresponding path program 1 times [2023-11-26 10:48:30,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:30,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197116201] [2023-11-26 10:48:30,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:30,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:31,182 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 10:48:31,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:31,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197116201] [2023-11-26 10:48:31,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197116201] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:31,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809722093] [2023-11-26 10:48:31,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:31,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:31,183 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:31,184 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:31,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:48:31,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:31,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 711 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 10:48:31,632 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 10:48:31,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 10:48:31,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809722093] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:31,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:31,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-11-26 10:48:31,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886346747] [2023-11-26 10:48:31,670 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:31,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 10:48:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:31,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 10:48:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:31,672 INFO L87 Difference]: Start difference. First operand 515 states and 715 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:31,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:31,859 INFO L93 Difference]: Finished difference Result 1005 states and 1407 transitions. [2023-11-26 10:48:31,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:31,860 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2023-11-26 10:48:31,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:31,864 INFO L225 Difference]: With dead ends: 1005 [2023-11-26 10:48:31,864 INFO L226 Difference]: Without dead ends: 533 [2023-11-26 10:48:31,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:31,866 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 4 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1866 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:31,866 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1866 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:48:31,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2023-11-26 10:48:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 533. [2023-11-26 10:48:31,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 533 states, 447 states have (on average 1.541387024608501) internal successors, (689), 506 states have internal predecessors, (689), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-11-26 10:48:31,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 533 states to 533 states and 733 transitions. [2023-11-26 10:48:31,893 INFO L78 Accepts]: Start accepts. Automaton has 533 states and 733 transitions. Word has length 57 [2023-11-26 10:48:31,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:31,894 INFO L495 AbstractCegarLoop]: Abstraction has 533 states and 733 transitions. [2023-11-26 10:48:31,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:31,894 INFO L276 IsEmpty]: Start isEmpty. Operand 533 states and 733 transitions. [2023-11-26 10:48:31,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 10:48:31,895 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:31,895 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:31,907 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-26 10:48:32,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 10:48:32,103 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:32,103 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:32,104 INFO L85 PathProgramCache]: Analyzing trace with hash -208490749, now seen corresponding path program 1 times [2023-11-26 10:48:32,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:32,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545183456] [2023-11-26 10:48:32,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:32,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:32,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:48:32,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:48:32,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:32,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545183456] [2023-11-26 10:48:32,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545183456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:32,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:32,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:32,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347831854] [2023-11-26 10:48:32,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:32,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:32,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:32,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:32,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:32,400 INFO L87 Difference]: Start difference. First operand 533 states and 733 transitions. Second operand has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:48:33,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:33,131 INFO L93 Difference]: Finished difference Result 1080 states and 1522 transitions. [2023-11-26 10:48:33,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:33,132 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2023-11-26 10:48:33,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:33,138 INFO L225 Difference]: With dead ends: 1080 [2023-11-26 10:48:33,138 INFO L226 Difference]: Without dead ends: 650 [2023-11-26 10:48:33,139 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:33,140 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 166 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:33,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1625 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:48:33,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-11-26 10:48:33,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 573. [2023-11-26 10:48:33,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 486 states have (on average 1.52880658436214) internal successors, (743), 545 states have internal predecessors, (743), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 789 transitions. [2023-11-26 10:48:33,173 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 789 transitions. Word has length 60 [2023-11-26 10:48:33,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:33,173 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 789 transitions. [2023-11-26 10:48:33,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:48:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 789 transitions. [2023-11-26 10:48:33,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 10:48:33,174 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:33,175 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:33,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 10:48:33,175 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:33,175 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:33,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1503867464, now seen corresponding path program 1 times [2023-11-26 10:48:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:33,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125837847] [2023-11-26 10:48:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:33,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:33,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:33,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 10:48:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:33,366 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:48:33,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:33,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125837847] [2023-11-26 10:48:33,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125837847] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:33,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:33,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:33,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28172931] [2023-11-26 10:48:33,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:33,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:33,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:33,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:33,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:33,369 INFO L87 Difference]: Start difference. First operand 573 states and 789 transitions. Second operand has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:33,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:33,975 INFO L93 Difference]: Finished difference Result 597 states and 820 transitions. [2023-11-26 10:48:33,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:33,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 62 [2023-11-26 10:48:33,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:33,979 INFO L225 Difference]: With dead ends: 597 [2023-11-26 10:48:33,979 INFO L226 Difference]: Without dead ends: 595 [2023-11-26 10:48:33,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:33,980 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 47 mSDsluCounter, 1039 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:33,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1657 Invalid, 300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-26 10:48:33,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 595 states. [2023-11-26 10:48:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 595 to 573. [2023-11-26 10:48:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 486 states have (on average 1.5246913580246915) internal successors, (741), 545 states have internal predecessors, (741), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:34,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 787 transitions. [2023-11-26 10:48:34,014 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 787 transitions. Word has length 62 [2023-11-26 10:48:34,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:34,014 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 787 transitions. [2023-11-26 10:48:34,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:34,015 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 787 transitions. [2023-11-26 10:48:34,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 10:48:34,016 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:34,016 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:34,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 10:48:34,016 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:34,017 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:34,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1030455963, now seen corresponding path program 2 times [2023-11-26 10:48:34,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:34,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030481495] [2023-11-26 10:48:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:34,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:34,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:34,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:34,349 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2023-11-26 10:48:34,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:34,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030481495] [2023-11-26 10:48:34,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030481495] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:34,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796717468] [2023-11-26 10:48:34,350 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:34,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:34,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:34,353 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:34,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 10:48:34,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 10:48:34,777 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:34,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-26 10:48:34,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:34,874 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2023-11-26 10:48:34,874 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:34,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796717468] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:34,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:34,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 11 [2023-11-26 10:48:34,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892189727] [2023-11-26 10:48:34,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:34,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:48:34,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:34,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:48:34,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:48:34,876 INFO L87 Difference]: Start difference. First operand 573 states and 787 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:35,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:35,245 INFO L93 Difference]: Finished difference Result 1072 states and 1494 transitions. [2023-11-26 10:48:35,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:48:35,246 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 64 [2023-11-26 10:48:35,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:35,249 INFO L225 Difference]: With dead ends: 1072 [2023-11-26 10:48:35,250 INFO L226 Difference]: Without dead ends: 573 [2023-11-26 10:48:35,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-11-26 10:48:35,252 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 488 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:35,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [498 Valid, 2410 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:48:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2023-11-26 10:48:35,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2023-11-26 10:48:35,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 486 states have (on average 1.522633744855967) internal successors, (740), 545 states have internal predecessors, (740), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:35,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 786 transitions. [2023-11-26 10:48:35,282 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 786 transitions. Word has length 64 [2023-11-26 10:48:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:35,283 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 786 transitions. [2023-11-26 10:48:35,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 786 transitions. [2023-11-26 10:48:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 10:48:35,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:35,284 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:35,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:35,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 10:48:35,492 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:35,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:35,493 INFO L85 PathProgramCache]: Analyzing trace with hash -764056931, now seen corresponding path program 2 times [2023-11-26 10:48:35,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:35,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714420288] [2023-11-26 10:48:35,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:35,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:35,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:35,812 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2023-11-26 10:48:35,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:35,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714420288] [2023-11-26 10:48:35,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714420288] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:35,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944506085] [2023-11-26 10:48:35,813 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:48:35,813 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:35,813 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:35,814 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:35,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 10:48:36,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:48:36,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:48:36,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:48:36,449 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:36,520 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-26 10:48:36,520 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:36,605 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 58 proven. 22 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2023-11-26 10:48:36,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944506085] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:36,606 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:36,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2023-11-26 10:48:36,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665575704] [2023-11-26 10:48:36,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:36,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:48:36,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:36,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:48:36,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:48:36,608 INFO L87 Difference]: Start difference. First operand 573 states and 786 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:37,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:37,263 INFO L93 Difference]: Finished difference Result 1129 states and 1565 transitions. [2023-11-26 10:48:37,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 10:48:37,264 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 75 [2023-11-26 10:48:37,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:37,267 INFO L225 Difference]: With dead ends: 1129 [2023-11-26 10:48:37,267 INFO L226 Difference]: Without dead ends: 608 [2023-11-26 10:48:37,269 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=330, Invalid=792, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 10:48:37,270 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 11 mSDsluCounter, 3080 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3700 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:37,270 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3700 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:48:37,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2023-11-26 10:48:37,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 608. [2023-11-26 10:48:37,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 522 states have (on average 1.4846743295019158) internal successors, (775), 580 states have internal predecessors, (775), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 821 transitions. [2023-11-26 10:48:37,302 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 821 transitions. Word has length 75 [2023-11-26 10:48:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:37,302 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 821 transitions. [2023-11-26 10:48:37,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:37,302 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 821 transitions. [2023-11-26 10:48:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-26 10:48:37,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:37,304 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:37,316 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-26 10:48:37,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 10:48:37,515 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:37,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1033351347, now seen corresponding path program 1 times [2023-11-26 10:48:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:37,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400413194] [2023-11-26 10:48:37,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:37,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:38,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:38,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:38,016 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400413194] [2023-11-26 10:48:38,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400413194] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:38,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [919216946] [2023-11-26 10:48:38,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:38,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:38,021 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:38,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 10:48:38,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:38,580 INFO L262 TraceCheckSpWp]: Trace formula consists of 933 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 10:48:38,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:38,626 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:38,626 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:48:38,728 INFO L134 CoverageAnalysis]: Checked inductivity of 331 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:38,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [919216946] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:48:38,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:48:38,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-26 10:48:38,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604495731] [2023-11-26 10:48:38,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:48:38,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 10:48:38,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:38,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 10:48:38,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:48:38,731 INFO L87 Difference]: Start difference. First operand 608 states and 821 transitions. Second operand has 13 states, 12 states have (on average 5.75) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:39,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:39,647 INFO L93 Difference]: Finished difference Result 3683 states and 5407 transitions. [2023-11-26 10:48:39,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:48:39,647 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 99 [2023-11-26 10:48:39,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:39,670 INFO L225 Difference]: With dead ends: 3683 [2023-11-26 10:48:39,671 INFO L226 Difference]: Without dead ends: 3682 [2023-11-26 10:48:39,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 10:48:39,673 INFO L413 NwaCegarLoop]: 618 mSDtfsCounter, 6138 mSDsluCounter, 5437 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6198 SdHoareTripleChecker+Valid, 6055 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:39,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6198 Valid, 6055 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:48:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3682 states. [2023-11-26 10:48:39,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3682 to 632. [2023-11-26 10:48:39,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 546 states have (on average 1.4743589743589745) internal successors, (805), 604 states have internal predecessors, (805), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:39,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 851 transitions. [2023-11-26 10:48:39,740 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 851 transitions. Word has length 99 [2023-11-26 10:48:39,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:39,740 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 851 transitions. [2023-11-26 10:48:39,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.75) internal successors, (69), 13 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 10:48:39,741 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 851 transitions. [2023-11-26 10:48:39,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 10:48:39,742 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:39,742 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:39,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:39,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:39,951 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:39,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:39,951 INFO L85 PathProgramCache]: Analyzing trace with hash 338693230, now seen corresponding path program 1 times [2023-11-26 10:48:39,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:39,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500237444] [2023-11-26 10:48:39,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:39,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:40,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:40,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:48:40,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:40,700 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:40,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:40,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500237444] [2023-11-26 10:48:40,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500237444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:40,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:40,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:48:40,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926639554] [2023-11-26 10:48:40,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:40,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:40,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:40,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:40,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:48:40,704 INFO L87 Difference]: Start difference. First operand 632 states and 851 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:41,479 INFO L93 Difference]: Finished difference Result 1227 states and 1735 transitions. [2023-11-26 10:48:41,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:48:41,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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 104 [2023-11-26 10:48:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:41,485 INFO L225 Difference]: With dead ends: 1227 [2023-11-26 10:48:41,485 INFO L226 Difference]: Without dead ends: 849 [2023-11-26 10:48:41,486 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 [2023-11-26 10:48:41,487 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 1226 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:41,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1236 Valid, 1631 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:48:41,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2023-11-26 10:48:41,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 634. [2023-11-26 10:48:41,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 548 states have (on average 1.4726277372262773) internal successors, (807), 606 states have internal predecessors, (807), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 853 transitions. [2023-11-26 10:48:41,537 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 853 transitions. Word has length 104 [2023-11-26 10:48:41,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:41,537 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 853 transitions. [2023-11-26 10:48:41,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 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) [2023-11-26 10:48:41,538 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 853 transitions. [2023-11-26 10:48:41,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 10:48:41,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:41,539 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:41,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-26 10:48:41,540 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:41,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash 2113700592, now seen corresponding path program 1 times [2023-11-26 10:48:41,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:41,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003806372] [2023-11-26 10:48:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:41,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:41,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:41,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:48:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:41,828 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:41,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:41,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003806372] [2023-11-26 10:48:41,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003806372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:41,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:41,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:41,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089109988] [2023-11-26 10:48:41,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:41,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:41,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:41,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:41,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:41,831 INFO L87 Difference]: Start difference. First operand 634 states and 853 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:42,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:42,555 INFO L93 Difference]: Finished difference Result 1107 states and 1548 transitions. [2023-11-26 10:48:42,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:42,556 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2023-11-26 10:48:42,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:42,561 INFO L225 Difference]: With dead ends: 1107 [2023-11-26 10:48:42,561 INFO L226 Difference]: Without dead ends: 729 [2023-11-26 10:48:42,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:42,562 INFO L413 NwaCegarLoop]: 703 mSDtfsCounter, 161 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:42,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1745 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:48:42,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2023-11-26 10:48:42,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 637. [2023-11-26 10:48:42,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 637 states, 553 states have (on average 1.4665461121157324) internal successors, (811), 609 states have internal predecessors, (811), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:42,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 857 transitions. [2023-11-26 10:48:42,607 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 857 transitions. Word has length 104 [2023-11-26 10:48:42,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:42,608 INFO L495 AbstractCegarLoop]: Abstraction has 637 states and 857 transitions. [2023-11-26 10:48:42,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:42,608 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 857 transitions. [2023-11-26 10:48:42,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-11-26 10:48:42,610 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:42,611 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:42,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 10:48:42,613 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:42,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash 2114333083, now seen corresponding path program 1 times [2023-11-26 10:48:42,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:42,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446979279] [2023-11-26 10:48:42,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:42,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:42,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:42,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:48:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:42,983 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:42,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:42,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446979279] [2023-11-26 10:48:42,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446979279] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:42,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:42,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:42,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776741248] [2023-11-26 10:48:42,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:42,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:42,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:42,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:42,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:42,986 INFO L87 Difference]: Start difference. First operand 637 states and 857 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:43,719 INFO L93 Difference]: Finished difference Result 662 states and 892 transitions. [2023-11-26 10:48:43,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:43,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 104 [2023-11-26 10:48:43,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:43,724 INFO L225 Difference]: With dead ends: 662 [2023-11-26 10:48:43,724 INFO L226 Difference]: Without dead ends: 659 [2023-11-26 10:48:43,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:43,725 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 385 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 1212 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:43,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 1212 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:48:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-26 10:48:43,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 634. [2023-11-26 10:48:43,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 553 states have (on average 1.461121157323689) internal successors, (808), 606 states have internal predecessors, (808), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:43,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 854 transitions. [2023-11-26 10:48:43,768 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 854 transitions. Word has length 104 [2023-11-26 10:48:43,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:43,768 INFO L495 AbstractCegarLoop]: Abstraction has 634 states and 854 transitions. [2023-11-26 10:48:43,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:43,769 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 854 transitions. [2023-11-26 10:48:43,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-26 10:48:43,770 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:43,771 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:43,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-26 10:48:43,771 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:43,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:43,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1100209552, now seen corresponding path program 1 times [2023-11-26 10:48:43,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:43,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728931940] [2023-11-26 10:48:43,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:43,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:43,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:44,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:48:44,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:44,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:44,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728931940] [2023-11-26 10:48:44,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728931940] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:44,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:44,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:44,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524425079] [2023-11-26 10:48:44,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:44,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:44,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:44,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:44,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:44,019 INFO L87 Difference]: Start difference. First operand 634 states and 854 transitions. Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-11-26 10:48:44,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:44,765 INFO L93 Difference]: Finished difference Result 1114 states and 1556 transitions. [2023-11-26 10:48:44,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:44,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 105 [2023-11-26 10:48:44,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:44,770 INFO L225 Difference]: With dead ends: 1114 [2023-11-26 10:48:44,770 INFO L226 Difference]: Without dead ends: 732 [2023-11-26 10:48:44,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:44,773 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 281 mSDsluCounter, 895 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:44,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 1518 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:48:44,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2023-11-26 10:48:44,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 619. [2023-11-26 10:48:44,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 619 states, 542 states have (on average 1.4538745387453875) internal successors, (788), 591 states have internal predecessors, (788), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:44,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 834 transitions. [2023-11-26 10:48:44,820 INFO L78 Accepts]: Start accepts. Automaton has 619 states and 834 transitions. Word has length 105 [2023-11-26 10:48:44,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:44,820 INFO L495 AbstractCegarLoop]: Abstraction has 619 states and 834 transitions. [2023-11-26 10:48:44,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-11-26 10:48:44,820 INFO L276 IsEmpty]: Start isEmpty. Operand 619 states and 834 transitions. [2023-11-26 10:48:44,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-26 10:48:44,822 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:44,822 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:44,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-26 10:48:44,822 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:44,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:44,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1119816833, now seen corresponding path program 1 times [2023-11-26 10:48:44,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:44,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893555739] [2023-11-26 10:48:44,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:44,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:44,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:45,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:45,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:48:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:45,152 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:45,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:45,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893555739] [2023-11-26 10:48:45,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893555739] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:45,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:45,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:45,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980838976] [2023-11-26 10:48:45,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:45,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:45,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:45,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:45,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:45,155 INFO L87 Difference]: Start difference. First operand 619 states and 834 transitions. Second operand has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-11-26 10:48:45,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:45,937 INFO L93 Difference]: Finished difference Result 690 states and 938 transitions. [2023-11-26 10:48:45,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:45,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 105 [2023-11-26 10:48:45,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:45,943 INFO L225 Difference]: With dead ends: 690 [2023-11-26 10:48:45,943 INFO L226 Difference]: Without dead ends: 689 [2023-11-26 10:48:45,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:45,944 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 413 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:45,944 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1339 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 10:48:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2023-11-26 10:48:46,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 618. [2023-11-26 10:48:46,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 542 states have (on average 1.452029520295203) internal successors, (787), 590 states have internal predecessors, (787), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:46,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 833 transitions. [2023-11-26 10:48:46,007 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 833 transitions. Word has length 105 [2023-11-26 10:48:46,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:46,007 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 833 transitions. [2023-11-26 10:48:46,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-11-26 10:48:46,008 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 833 transitions. [2023-11-26 10:48:46,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-26 10:48:46,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:46,009 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:46,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-26 10:48:46,010 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:46,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:46,010 INFO L85 PathProgramCache]: Analyzing trace with hash 135977052, now seen corresponding path program 1 times [2023-11-26 10:48:46,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:46,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397788522] [2023-11-26 10:48:46,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:46,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:46,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:46,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:48:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:46,385 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:46,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:46,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397788522] [2023-11-26 10:48:46,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397788522] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:46,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1182102211] [2023-11-26 10:48:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:46,388 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:46,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:46,393 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:46,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 10:48:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:47,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 1024 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:48:47,073 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:47,126 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2023-11-26 10:48:47,126 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:48:47,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1182102211] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:47,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:48:47,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 6 [2023-11-26 10:48:47,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330570023] [2023-11-26 10:48:47,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:47,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:48:47,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:47,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:48:47,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:47,129 INFO L87 Difference]: Start difference. First operand 618 states and 833 transitions. Second operand has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:48:47,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:47,482 INFO L93 Difference]: Finished difference Result 1121 states and 1556 transitions. [2023-11-26 10:48:47,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:48:47,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 106 [2023-11-26 10:48:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:47,487 INFO L225 Difference]: With dead ends: 1121 [2023-11-26 10:48:47,487 INFO L226 Difference]: Without dead ends: 691 [2023-11-26 10:48:47,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-26 10:48:47,489 INFO L413 NwaCegarLoop]: 641 mSDtfsCounter, 549 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 558 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:47,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [558 Valid, 1770 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:48:47,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2023-11-26 10:48:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 617. [2023-11-26 10:48:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 543 states have (on average 1.4438305709023942) internal successors, (784), 589 states have internal predecessors, (784), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 830 transitions. [2023-11-26 10:48:47,533 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 830 transitions. Word has length 106 [2023-11-26 10:48:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:47,534 INFO L495 AbstractCegarLoop]: Abstraction has 617 states and 830 transitions. [2023-11-26 10:48:47,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 10:48:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 830 transitions. [2023-11-26 10:48:47,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-11-26 10:48:47,536 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:47,536 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:47,550 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 10:48:47,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 10:48:47,750 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:47,750 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:47,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1824942495, now seen corresponding path program 1 times [2023-11-26 10:48:47,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:47,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810498819] [2023-11-26 10:48:47,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:47,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:47,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:47,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:47,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:48:47,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2023-11-26 10:48:47,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:47,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810498819] [2023-11-26 10:48:47,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810498819] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:48:47,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:48:47,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 10:48:47,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47196664] [2023-11-26 10:48:47,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:48:47,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:48:47,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:48:47,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:48:47,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:47,995 INFO L87 Difference]: Start difference. First operand 617 states and 830 transitions. Second operand has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:48:48,547 INFO L93 Difference]: Finished difference Result 639 states and 861 transitions. [2023-11-26 10:48:48,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:48:48,552 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 108 [2023-11-26 10:48:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:48:48,557 INFO L225 Difference]: With dead ends: 639 [2023-11-26 10:48:48,557 INFO L226 Difference]: Without dead ends: 638 [2023-11-26 10:48:48,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:48:48,558 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 48 mSDsluCounter, 1012 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:48:48,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1617 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:48:48,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2023-11-26 10:48:48,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 616. [2023-11-26 10:48:48,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 543 states have (on average 1.441988950276243) internal successors, (783), 588 states have internal predecessors, (783), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-11-26 10:48:48,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 829 transitions. [2023-11-26 10:48:48,606 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 829 transitions. Word has length 108 [2023-11-26 10:48:48,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:48:48,606 INFO L495 AbstractCegarLoop]: Abstraction has 616 states and 829 transitions. [2023-11-26 10:48:48,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:48:48,606 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 829 transitions. [2023-11-26 10:48:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-11-26 10:48:48,608 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:48:48,608 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:48:48,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-26 10:48:48,608 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [bb_verror_msgErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, bb_verror_msgErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 61 more)] === [2023-11-26 10:48:48,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:48:48,609 INFO L85 PathProgramCache]: Analyzing trace with hash 738642952, now seen corresponding path program 1 times [2023-11-26 10:48:48,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:48:48,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66427093] [2023-11-26 10:48:48,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:48,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:48:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 10:48:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:55,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-26 10:48:55,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:55,661 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 54 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2023-11-26 10:48:55,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:48:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66427093] [2023-11-26 10:48:55,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66427093] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:48:55,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590228676] [2023-11-26 10:48:55,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:48:55,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:48:55,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:48:55,665 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:48:55,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5923c8da-2881-41ad-b3ef-39782ce76486/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 10:48:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:48:56,411 INFO L262 TraceCheckSpWp]: Trace formula consists of 1029 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-26 10:48:56,422 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:48:56,480 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:48:56,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:48:56,517 INFO L349 Elim1Store]: treesize reduction 28, result has 31.7 percent of original size [2023-11-26 10:48:56,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2023-11-26 10:48:56,540 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:48:56,558 INFO L349 Elim1Store]: treesize reduction 13, result has 43.5 percent of original size [2023-11-26 10:48:56,559 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 21 [2023-11-26 10:48:56,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 10:48:56,621 INFO L349 Elim1Store]: treesize reduction 39, result has 37.1 percent of original size [2023-11-26 10:48:56,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2023-11-26 10:48:56,644 INFO L190 IndexEqualityManager]: detected not equals via solver