./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i --full-output --architecture 32bit -------------------------------------------------------------------------------- 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_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/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_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/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 32bit --witnessprinter.graph.data.programhash b3d7899c651fa61cfb9cf623e0f4ceb470fe32eb0d0272d2277c965ed07c2f88 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 12:02:36,559 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 12:02:36,642 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 12:02:36,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 12:02:36,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 12:02:36,672 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 12:02:36,673 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 12:02:36,674 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 12:02:36,674 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 12:02:36,675 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 12:02:36,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 12:02:36,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 12:02:36,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 12:02:36,678 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 12:02:36,678 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 12:02:36,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 12:02:36,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 12:02:36,680 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 12:02:36,680 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 12:02:36,681 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 12:02:36,682 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 12:02:36,682 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 12:02:36,683 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 12:02:36,683 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 12:02:36,684 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 12:02:36,684 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 12:02:36,685 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 12:02:36,685 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 12:02:36,686 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 12:02:36,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 12:02:36,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 12:02:36,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 12:02:36,688 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 12:02:36,688 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:36,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 12:02:36,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 12:02:36,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 12:02:36,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 12:02:36,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 12:02:36,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 12:02:36,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 12:02:36,691 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 12:02:36,691 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 12:02:36,691 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 12:02:36,691 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_82f913fa-3980-4a67-865f-b2ca2fa919bd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3d7899c651fa61cfb9cf623e0f4ceb470fe32eb0d0272d2277c965ed07c2f88 [2023-11-26 12:02:37,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 12:02:37,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 12:02:37,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 12:02:37,067 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 12:02:37,068 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 12:02:37,069 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2023-11-26 12:02:40,245 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 12:02:40,573 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 12:02:40,574 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/sv-benchmarks/c/list-simple/sll2n_remove_all_reverse.i [2023-11-26 12:02:40,617 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/data/3e1e759c0/23db21a109094f44b315fd8cae4fc57c/FLAG2acd3d327 [2023-11-26 12:02:40,637 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/data/3e1e759c0/23db21a109094f44b315fd8cae4fc57c [2023-11-26 12:02:40,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 12:02:40,645 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 12:02:40,647 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:40,647 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 12:02:40,655 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 12:02:40,655 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:40" (1/1) ... [2023-11-26 12:02:40,657 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ed998ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:40, skipping insertion in model container [2023-11-26 12:02:40,657 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:02:40" (1/1) ... [2023-11-26 12:02:40,704 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 12:02:41,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:41,079 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 12:02:41,171 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 12:02:41,212 INFO L206 MainTranslator]: Completed translation [2023-11-26 12:02:41,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41 WrapperNode [2023-11-26 12:02:41,213 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 12:02:41,214 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:41,214 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 12:02:41,215 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 12:02:41,223 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,261 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,298 INFO L138 Inliner]: procedures = 126, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 112 [2023-11-26 12:02:41,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 12:02:41,300 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 12:02:41,300 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 12:02:41,300 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 12:02:41,312 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,348 INFO L175 MemorySlicer]: Split 15 memory accesses to 3 slices as follows [2, 7, 6]. 47 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 5 writes are split as follows [0, 4, 1]. [2023-11-26 12:02:41,349 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,349 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,357 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,361 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,369 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 12:02:41,376 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 12:02:41,376 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 12:02:41,377 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 12:02:41,378 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (1/1) ... [2023-11-26 12:02:41,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 12:02:41,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 12:02:41,414 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 12:02:41,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 12:02:41,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 12:02:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 12:02:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 12:02:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 12:02:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 12:02:41,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 12:02:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 12:02:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 12:02:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 12:02:41,455 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 12:02:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 12:02:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 12:02:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 12:02:41,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-26 12:02:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-26 12:02:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-26 12:02:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 12:02:41,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 12:02:41,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 12:02:41,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 12:02:41,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 12:02:41,604 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 12:02:41,607 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 12:02:41,863 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 12:02:41,923 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 12:02:41,923 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 12:02:41,924 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:41 BoogieIcfgContainer [2023-11-26 12:02:41,924 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 12:02:41,927 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 12:02:41,927 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 12:02:41,931 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 12:02:41,932 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:02:40" (1/3) ... [2023-11-26 12:02:41,932 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1e5273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:41, skipping insertion in model container [2023-11-26 12:02:41,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:02:41" (2/3) ... [2023-11-26 12:02:41,933 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d1e5273 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:02:41, skipping insertion in model container [2023-11-26 12:02:41,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:41" (3/3) ... [2023-11-26 12:02:41,935 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2n_remove_all_reverse.i [2023-11-26 12:02:41,959 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 12:02:41,960 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 12:02:42,022 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 12:02:42,028 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;@50f5f772, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 12:02:42,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 12:02:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 28 states have internal predecessors, (38), 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 12:02:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-26 12:02:42,038 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:42,038 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-26 12:02:42,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:02:42,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash 3794247, now seen corresponding path program 1 times [2023-11-26 12:02:42,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:42,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710267006] [2023-11-26 12:02:42,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:42,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:42,452 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 12:02:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710267006] [2023-11-26 12:02:42,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710267006] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:42,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:42,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:42,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992345341] [2023-11-26 12:02:42,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:42,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:42,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:42,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:42,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:42,516 INFO L87 Difference]: Start difference. First operand has 29 states, 22 states have (on average 1.7272727272727273) internal successors, (38), 28 states have internal predecessors, (38), 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:42,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:42,592 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2023-11-26 12:02:42,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:42,595 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-26 12:02:42,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:42,604 INFO L225 Difference]: With dead ends: 56 [2023-11-26 12:02:42,604 INFO L226 Difference]: Without dead ends: 28 [2023-11-26 12:02:42,608 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 12:02:42,614 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 7 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:42,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 44 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-26 12:02:42,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2023-11-26 12:02:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 22 states have internal predecessors, (26), 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 12:02:42,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2023-11-26 12:02:42,669 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 4 [2023-11-26 12:02:42,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:42,670 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2023-11-26 12:02:42,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:42,671 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2023-11-26 12:02:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-26 12:02:42,671 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:42,671 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-26 12:02:42,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 12:02:42,672 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:02:42,673 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:42,673 INFO L85 PathProgramCache]: Analyzing trace with hash 3796128, now seen corresponding path program 1 times [2023-11-26 12:02:42,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:42,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462117214] [2023-11-26 12:02:42,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:42,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:42,834 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 12:02:42,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:42,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462117214] [2023-11-26 12:02:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462117214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:42,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:42,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:02:42,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581998555] [2023-11-26 12:02:42,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:42,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:42,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:42,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:42,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:42,845 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:42,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:42,907 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2023-11-26 12:02:42,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:42,908 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-26 12:02:42,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:42,910 INFO L225 Difference]: With dead ends: 23 [2023-11-26 12:02:42,910 INFO L226 Difference]: Without dead ends: 22 [2023-11-26 12:02:42,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:02:42,914 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:42,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 47 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2023-11-26 12:02:42,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2023-11-26 12:02:42,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 21 states have internal predecessors, (25), 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 12:02:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2023-11-26 12:02:42,928 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 4 [2023-11-26 12:02:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:42,928 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2023-11-26 12:02:42,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:42,929 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2023-11-26 12:02:42,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 12:02:42,930 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:42,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 12:02:42,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 12:02:42,931 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:02:42,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:42,932 INFO L85 PathProgramCache]: Analyzing trace with hash 117680024, now seen corresponding path program 1 times [2023-11-26 12:02:42,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:42,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667757758] [2023-11-26 12:02:42,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:42,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:43,161 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 12:02:43,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:43,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667757758] [2023-11-26 12:02:43,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667757758] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:43,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:43,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 12:02:43,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353634938] [2023-11-26 12:02:43,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:43,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:43,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:43,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:43,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:43,170 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 12:02:43,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:43,211 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2023-11-26 12:02:43,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:43,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-11-26 12:02:43,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:43,218 INFO L225 Difference]: With dead ends: 22 [2023-11-26 12:02:43,219 INFO L226 Difference]: Without dead ends: 21 [2023-11-26 12:02:43,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 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 12:02:43,226 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:43,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 45 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:43,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-26 12:02:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-26 12:02:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.411764705882353) internal successors, (24), 20 states have internal predecessors, (24), 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 12:02:43,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2023-11-26 12:02:43,231 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 5 [2023-11-26 12:02:43,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:43,231 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2023-11-26 12:02:43,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 12:02:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2023-11-26 12:02:43,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 12:02:43,232 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:43,233 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:43,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 12:02:43,233 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:02:43,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1112322029, now seen corresponding path program 1 times [2023-11-26 12:02:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:43,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346681010] [2023-11-26 12:02:43,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:43,351 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 12:02:43,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:43,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346681010] [2023-11-26 12:02:43,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346681010] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:43,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:02:43,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436552964] [2023-11-26 12:02:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:43,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:43,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:43,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:43,357 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:43,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:43,382 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2023-11-26 12:02:43,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:43,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 12:02:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:43,384 INFO L225 Difference]: With dead ends: 21 [2023-11-26 12:02:43,385 INFO L226 Difference]: Without dead ends: 20 [2023-11-26 12:02:43,385 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 12:02:43,393 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:43,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 15 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:43,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-11-26 12:02:43,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-11-26 12:02:43,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 19 states have internal predecessors, (23), 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 12:02:43,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2023-11-26 12:02:43,404 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2023-11-26 12:02:43,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:43,405 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2023-11-26 12:02:43,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 12:02:43,405 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2023-11-26 12:02:43,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 12:02:43,406 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:43,406 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:43,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 12:02:43,406 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:02:43,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:43,407 INFO L85 PathProgramCache]: Analyzing trace with hash 122244597, now seen corresponding path program 1 times [2023-11-26 12:02:43,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:43,410 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582922198] [2023-11-26 12:02:43,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:43,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:43,484 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 12:02:43,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:43,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582922198] [2023-11-26 12:02:43,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582922198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:43,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:43,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-26 12:02:43,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667355609] [2023-11-26 12:02:43,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:43,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 12:02:43,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:43,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 12:02:43,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 12:02:43,488 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 12:02:43,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:43,503 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2023-11-26 12:02:43,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 12:02:43,504 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2023-11-26 12:02:43,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:43,504 INFO L225 Difference]: With dead ends: 20 [2023-11-26 12:02:43,504 INFO L226 Difference]: Without dead ends: 19 [2023-11-26 12:02:43,505 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 12:02:43,506 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:43,506 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:43,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2023-11-26 12:02:43,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2023-11-26 12:02:43,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 18 states have internal predecessors, (22), 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 12:02:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2023-11-26 12:02:43,511 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2023-11-26 12:02:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:43,511 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2023-11-26 12:02:43,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 12:02:43,511 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2023-11-26 12:02:43,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 12:02:43,512 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:43,512 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:43,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 12:02:43,513 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:02:43,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:43,513 INFO L85 PathProgramCache]: Analyzing trace with hash -2055593959, now seen corresponding path program 1 times [2023-11-26 12:02:43,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:43,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824621406] [2023-11-26 12:02:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:43,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:43,580 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 12:02:43,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:43,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824621406] [2023-11-26 12:02:43,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824621406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:43,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:43,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:02:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101449520] [2023-11-26 12:02:43,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:43,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 12:02:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 12:02:43,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 12:02:43,582 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12:02:43,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:43,614 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2023-11-26 12:02:43,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 12:02:43,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 13 [2023-11-26 12:02:43,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:43,615 INFO L225 Difference]: With dead ends: 19 [2023-11-26 12:02:43,615 INFO L226 Difference]: Without dead ends: 18 [2023-11-26 12:02:43,615 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 12:02:43,616 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 10 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:43,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 31 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:43,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2023-11-26 12:02:43,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2023-11-26 12:02:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.2352941176470589) internal successors, (21), 17 states have internal predecessors, (21), 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 12:02:43,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2023-11-26 12:02:43,621 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 13 [2023-11-26 12:02:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:43,621 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2023-11-26 12:02:43,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 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 12:02:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2023-11-26 12:02:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 12:02:43,622 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 12:02:43,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:43,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 12:02:43,623 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 12:02:43,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 12:02:43,623 INFO L85 PathProgramCache]: Analyzing trace with hash 701096812, now seen corresponding path program 1 times [2023-11-26 12:02:43,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 12:02:43,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790746231] [2023-11-26 12:02:43,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 12:02:43,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 12:02:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 12:02:43,698 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 12:02:43,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 12:02:43,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790746231] [2023-11-26 12:02:43,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790746231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 12:02:43,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 12:02:43,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 12:02:43,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487050217] [2023-11-26 12:02:43,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 12:02:43,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 12:02:43,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 12:02:43,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 12:02:43,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 12:02:43,701 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 12:02:43,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 12:02:43,743 INFO L93 Difference]: Finished difference Result 18 states and 21 transitions. [2023-11-26 12:02:43,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 12:02:43,743 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 14 [2023-11-26 12:02:43,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 12:02:43,744 INFO L225 Difference]: With dead ends: 18 [2023-11-26 12:02:43,744 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 12:02:43,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 12:02:43,745 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 18 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 12:02:43,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 24 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 12:02:43,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 12:02:43,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 12:02:43,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 12:02:43,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 12:02:43,747 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2023-11-26 12:02:43,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 12:02:43,747 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 12:02:43,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 12:02:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 12:02:43,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 12:02:43,750 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2023-11-26 12:02:43,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2023-11-26 12:02:43,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2023-11-26 12:02:43,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2023-11-26 12:02:43,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2023-11-26 12:02:43,751 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2023-11-26 12:02:43,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 12:02:43,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 12:02:43,788 INFO L899 garLoopResultBuilder]: For program point L576(lines 576 578) no Hoare annotation was computed. [2023-11-26 12:02:43,788 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2023-11-26 12:02:43,788 INFO L899 garLoopResultBuilder]: For program point L572(line 572) no Hoare annotation was computed. [2023-11-26 12:02:43,788 INFO L899 garLoopResultBuilder]: For program point L593(lines 593 605) no Hoare annotation was computed. [2023-11-26 12:02:43,789 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 607 621) no Hoare annotation was computed. [2023-11-26 12:02:43,789 INFO L899 garLoopResultBuilder]: For program point L585-3(line 585) no Hoare annotation was computed. [2023-11-26 12:02:43,789 INFO L899 garLoopResultBuilder]: For program point L585-4(line 585) no Hoare annotation was computed. [2023-11-26 12:02:43,789 INFO L895 garLoopResultBuilder]: At program point L585-5(lines 585 589) the Hoare annotation is: (and (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_sll_create_~len#1| 2)) [2023-11-26 12:02:43,789 INFO L899 garLoopResultBuilder]: For program point L585-6(lines 585 589) no Hoare annotation was computed. [2023-11-26 12:02:43,790 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2023-11-26 12:02:43,790 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2023-11-26 12:02:43,790 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-26 12:02:43,790 INFO L899 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2023-11-26 12:02:43,790 INFO L899 garLoopResultBuilder]: For program point L615(lines 615 617) no Hoare annotation was computed. [2023-11-26 12:02:43,791 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 585) no Hoare annotation was computed. [2023-11-26 12:02:43,791 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 12:02:43,791 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2023-11-26 12:02:43,791 INFO L899 garLoopResultBuilder]: For program point L599-1(lines 599 602) no Hoare annotation was computed. [2023-11-26 12:02:43,791 INFO L895 garLoopResultBuilder]: At program point L599-3(lines 599 602) the Hoare annotation is: (and (<= 0 |ULTIMATE.start_main_~i~0#1|) (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~i~0#1| 1)) [2023-11-26 12:02:43,791 INFO L899 garLoopResultBuilder]: For program point L599-4(lines 599 602) no Hoare annotation was computed. [2023-11-26 12:02:43,791 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 12:02:43,792 INFO L899 garLoopResultBuilder]: For program point L612(line 612) no Hoare annotation was computed. [2023-11-26 12:02:43,792 INFO L899 garLoopResultBuilder]: For program point L612-1(line 612) no Hoare annotation was computed. [2023-11-26 12:02:43,792 INFO L899 garLoopResultBuilder]: For program point L612-5(line 612) no Hoare annotation was computed. [2023-11-26 12:02:43,792 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 612) no Hoare annotation was computed. [2023-11-26 12:02:43,792 INFO L899 garLoopResultBuilder]: For program point L612-6(line 612) no Hoare annotation was computed. [2023-11-26 12:02:43,793 INFO L895 garLoopResultBuilder]: At program point L612-7(lines 612 614) the Hoare annotation is: (and (= |ULTIMATE.start_main_~len~0#1| 2) (<= |ULTIMATE.start_main_~i~0#1| 1)) [2023-11-26 12:02:43,793 INFO L899 garLoopResultBuilder]: For program point L612-8(lines 612 614) no Hoare annotation was computed. [2023-11-26 12:02:43,793 INFO L899 garLoopResultBuilder]: For program point L592(lines 592 606) no Hoare annotation was computed. [2023-11-26 12:02:43,796 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-11-26 12:02:43,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 12:02:43,809 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~i~0 [2023-11-26 12:02:43,809 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~len~0 [2023-11-26 12:02:43,810 WARN L1572 BoogieBacktranslator]: Unfinished Backtranslation: unknown boogie variable ~i~0 [2023-11-26 12:02:43,810 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:02:43 BoogieIcfgContainer [2023-11-26 12:02:43,810 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 12:02:43,811 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 12:02:43,811 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 12:02:43,811 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 12:02:43,812 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:02:41" (3/4) ... [2023-11-26 12:02:43,814 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 12:02:43,822 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-11-26 12:02:43,822 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-26 12:02:43,823 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 12:02:43,823 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 12:02:43,917 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 12:02:43,917 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 12:02:43,918 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 12:02:43,918 INFO L158 Benchmark]: Toolchain (without parser) took 3273.04ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 125.9MB in the beginning and 91.2MB in the end (delta: 34.7MB). Peak memory consumption was 65.9MB. Max. memory is 16.1GB. [2023-11-26 12:02:43,919 INFO L158 Benchmark]: CDTParser took 1.46ms. Allocated memory is still 125.8MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 12:02:43,919 INFO L158 Benchmark]: CACSL2BoogieTranslator took 566.45ms. Allocated memory is still 155.2MB. Free memory was 125.6MB in the beginning and 107.6MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2023-11-26 12:02:43,919 INFO L158 Benchmark]: Boogie Procedure Inliner took 85.01ms. Allocated memory is still 155.2MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:02:43,920 INFO L158 Benchmark]: Boogie Preprocessor took 69.05ms. Allocated memory is still 155.2MB. Free memory was 105.5MB in the beginning and 102.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 12:02:43,920 INFO L158 Benchmark]: RCFGBuilder took 548.56ms. Allocated memory is still 155.2MB. Free memory was 102.8MB in the beginning and 84.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-11-26 12:02:43,920 INFO L158 Benchmark]: TraceAbstraction took 1883.30ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 84.0MB in the beginning and 96.4MB in the end (delta: -12.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2023-11-26 12:02:43,921 INFO L158 Benchmark]: Witness Printer took 106.72ms. Allocated memory is still 186.6MB. Free memory was 96.4MB in the beginning and 91.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 12:02:43,923 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.46ms. Allocated memory is still 125.8MB. Free memory is still 92.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 566.45ms. Allocated memory is still 155.2MB. Free memory was 125.6MB in the beginning and 107.6MB in the end (delta: 18.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 85.01ms. Allocated memory is still 155.2MB. Free memory was 107.6MB in the beginning and 105.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 69.05ms. Allocated memory is still 155.2MB. Free memory was 105.5MB in the beginning and 102.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 548.56ms. Allocated memory is still 155.2MB. Free memory was 102.8MB in the beginning and 84.6MB in the end (delta: 18.3MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1883.30ms. Allocated memory was 155.2MB in the beginning and 186.6MB in the end (delta: 31.5MB). Free memory was 84.0MB in the beginning and 96.4MB in the end (delta: -12.5MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Witness Printer took 106.72ms. Allocated memory is still 186.6MB. Free memory was 96.4MB in the beginning and 91.2MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~i~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~len~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: unknown boogie variable ~i~0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 585]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 585]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 612]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 612]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 612]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 612]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 71 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 221 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 112 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 101 IncrementalHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 109 mSDtfsCounter, 101 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, InterpolantAutomatonStates: 26, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 6 NumberOfFragments, 24 HoareAnnotationTreeSize, 3 FomulaSimplifications, 12 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 14 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 130 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: ((len == 2) && (len <= 2)) - InvariantResult [Line: 599]: Loop Invariant Derived loop invariant: null - InvariantResult [Line: 612]: Loop Invariant Derived loop invariant: ((len == 2) && (i <= 1)) RESULT: Ultimate proved your program to be correct! [2023-11-26 12:02:43,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82f913fa-3980-4a67-865f-b2ca2fa919bd/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE