./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/reducercommutativity/max05-1.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_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/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_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/reducercommutativity/max05-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/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_77c8f172-91da-4b50-be79-475a4db66642/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 4e48915cf0eaefe43320bbe59bf88f5c68b2f305d293e808fa6ece9112b5c238 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:52:09,445 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:52:09,556 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:52:09,560 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:52:09,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:52:09,605 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:52:09,607 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:52:09,607 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:52:09,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:52:09,614 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:52:09,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:52:09,616 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:52:09,617 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:52:09,618 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:52:09,619 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:52:09,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:52:09,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:52:09,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:52:09,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:52:09,622 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:52:09,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:52:09,623 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:52:09,623 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:52:09,624 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:52:09,624 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:52:09,625 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:52:09,625 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:52:09,626 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:52:09,626 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:52:09,627 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:52:09,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:52:09,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:52:09,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:52:09,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:09,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:52:09,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:52:09,631 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:52:09,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:52:09,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:52:09,633 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:52:09,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:52:09,634 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:52:09,634 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:52:09,634 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:52:09,635 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_77c8f172-91da-4b50-be79-475a4db66642/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e48915cf0eaefe43320bbe59bf88f5c68b2f305d293e808fa6ece9112b5c238 [2023-11-26 11:52:09,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:52:09,987 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:52:09,990 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:52:09,992 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:52:09,993 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:52:09,994 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/reducercommutativity/max05-1.i [2023-11-26 11:52:13,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:52:13,519 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:52:13,520 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/sv-benchmarks/c/reducercommutativity/max05-1.i [2023-11-26 11:52:13,529 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/data/3c9fcf14f/6afe72c253ae4d4199e102d2a08c5f16/FLAGc3479215a [2023-11-26 11:52:13,548 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/data/3c9fcf14f/6afe72c253ae4d4199e102d2a08c5f16 [2023-11-26 11:52:13,554 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:52:13,556 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:52:13,561 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:13,561 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:52:13,567 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:52:13,569 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,570 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d861c91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13, skipping insertion in model container [2023-11-26 11:52:13,571 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,596 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:52:13,798 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:13,807 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:52:13,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:52:13,847 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:52:13,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13 WrapperNode [2023-11-26 11:52:13,848 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:52:13,849 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:13,849 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:52:13,849 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:52:13,857 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,903 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 78 [2023-11-26 11:52:13,904 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:52:13,905 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:52:13,905 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:52:13,905 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:52:13,918 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,918 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,921 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,955 INFO L175 MemorySlicer]: Split 13 memory accesses to 2 slices as follows [2, 11]. 85 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 5 writes are split as follows [0, 5]. [2023-11-26 11:52:13,955 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,967 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,968 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,979 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,986 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:52:13,987 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:52:13,987 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:52:13,987 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:52:13,988 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (1/1) ... [2023-11-26 11:52:13,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:52:14,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:14,026 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:52:14,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:52:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:52:14,063 INFO L130 BoogieDeclarations]: Found specification of procedure max [2023-11-26 11:52:14,064 INFO L138 BoogieDeclarations]: Found implementation of procedure max [2023-11-26 11:52:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:52:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:52:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:52:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:52:14,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:52:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:52:14,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:52:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:52:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:52:14,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:52:14,152 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:52:14,155 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:52:14,390 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:52:14,424 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:52:14,424 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-26 11:52:14,425 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:14 BoogieIcfgContainer [2023-11-26 11:52:14,425 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:52:14,429 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:52:14,429 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:52:14,433 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:52:14,433 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:52:13" (1/3) ... [2023-11-26 11:52:14,434 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e87d61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:14, skipping insertion in model container [2023-11-26 11:52:14,434 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:52:13" (2/3) ... [2023-11-26 11:52:14,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e87d61f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:52:14, skipping insertion in model container [2023-11-26 11:52:14,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:14" (3/3) ... [2023-11-26 11:52:14,436 INFO L112 eAbstractionObserver]: Analyzing ICFG max05-1.i [2023-11-26 11:52:14,457 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:52:14,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-26 11:52:14,510 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:52:14,517 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;@4a4c9446, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:52:14,518 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2023-11-26 11:52:14,523 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 25 states have (on average 1.68) internal successors, (42), 33 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 11:52:14,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2023-11-26 11:52:14,530 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:14,531 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2023-11-26 11:52:14,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:14,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:14,538 INFO L85 PathProgramCache]: Analyzing trace with hash 131077, now seen corresponding path program 1 times [2023-11-26 11:52:14,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:14,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075563499] [2023-11-26 11:52:14,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:14,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:14,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:14,815 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 11:52:14,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:14,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075563499] [2023-11-26 11:52:14,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075563499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:14,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:14,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:14,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344726164] [2023-11-26 11:52:14,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:14,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:14,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:14,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:14,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:14,884 INFO L87 Difference]: Start difference. First operand has 38 states, 25 states have (on average 1.68) internal successors, (42), 33 states have internal predecessors, (42), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 11:52:15,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:15,027 INFO L93 Difference]: Finished difference Result 74 states and 97 transitions. [2023-11-26 11:52:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:15,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 11:52:15,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:15,038 INFO L225 Difference]: With dead ends: 74 [2023-11-26 11:52:15,038 INFO L226 Difference]: Without dead ends: 35 [2023-11-26 11:52:15,041 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 11:52:15,045 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:15,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 99 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:15,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2023-11-26 11:52:15,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2023-11-26 11:52:15,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 23 states have (on average 1.5217391304347827) internal successors, (35), 31 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:52:15,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2023-11-26 11:52:15,085 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 3 [2023-11-26 11:52:15,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:15,085 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2023-11-26 11:52:15,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 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 11:52:15,086 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2023-11-26 11:52:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:52:15,086 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:15,086 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-26 11:52:15,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:52:15,087 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:15,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:15,088 INFO L85 PathProgramCache]: Analyzing trace with hash -389978011, now seen corresponding path program 1 times [2023-11-26 11:52:15,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:15,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372043633] [2023-11-26 11:52:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:15,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:15,262 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 11:52:15,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:15,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372043633] [2023-11-26 11:52:15,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372043633] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:15,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1635873612] [2023-11-26 11:52:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:15,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:15,264 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:15,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:15,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:52:15,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:15,371 INFO L262 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:15,379 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:15,491 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 11:52:15,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:15,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1635873612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:15,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:15,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 8 [2023-11-26 11:52:15,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512064709] [2023-11-26 11:52:15,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:15,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:15,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:15,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:15,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:15,503 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 11:52:15,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:15,612 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2023-11-26 11:52:15,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:15,614 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 11:52:15,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:15,616 INFO L225 Difference]: With dead ends: 35 [2023-11-26 11:52:15,617 INFO L226 Difference]: Without dead ends: 34 [2023-11-26 11:52:15,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:15,619 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:15,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 107 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:15,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2023-11-26 11:52:15,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2023-11-26 11:52:15,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.4782608695652173) internal successors, (34), 30 states have internal predecessors, (34), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:52:15,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2023-11-26 11:52:15,636 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 6 [2023-11-26 11:52:15,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:15,636 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2023-11-26 11:52:15,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 5 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 11:52:15,638 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2023-11-26 11:52:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:52:15,639 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:15,639 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1] [2023-11-26 11:52:15,650 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:15,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:15,845 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:15,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:15,846 INFO L85 PathProgramCache]: Analyzing trace with hash 795583620, now seen corresponding path program 1 times [2023-11-26 11:52:15,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:15,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353932582] [2023-11-26 11:52:15,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:15,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:15,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:15,934 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 11:52:15,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:15,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353932582] [2023-11-26 11:52:15,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353932582] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:15,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097537848] [2023-11-26 11:52:15,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:15,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:15,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:15,937 INFO L87 Difference]: Start difference. First operand 34 states and 39 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 11:52:15,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:15,965 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2023-11-26 11:52:15,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:15,966 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 11:52:15,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:15,967 INFO L225 Difference]: With dead ends: 34 [2023-11-26 11:52:15,967 INFO L226 Difference]: Without dead ends: 33 [2023-11-26 11:52:15,968 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 11:52:15,969 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:15,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:15,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-26 11:52:15,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2023-11-26 11:52:15,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:52:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2023-11-26 11:52:15,978 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 7 [2023-11-26 11:52:15,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:15,978 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2023-11-26 11:52:15,979 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 11:52:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2023-11-26 11:52:15,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:52:15,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:15,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:15,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:52:15,981 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:15,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:15,982 INFO L85 PathProgramCache]: Analyzing trace with hash 205117829, now seen corresponding path program 1 times [2023-11-26 11:52:15,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:15,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189390425] [2023-11-26 11:52:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:15,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:16,087 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 11:52:16,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:16,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189390425] [2023-11-26 11:52:16,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189390425] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:16,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1887256056] [2023-11-26 11:52:16,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:16,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:16,091 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:16,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:52:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:16,160 INFO L262 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:16,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:16,192 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 11:52:16,193 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:16,236 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 11:52:16,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1887256056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:16,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:16,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-11-26 11:52:16,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109856661] [2023-11-26 11:52:16,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:16,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:52:16,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:16,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:52:16,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:16,241 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:16,316 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2023-11-26 11:52:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:16,317 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2023-11-26 11:52:16,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:16,319 INFO L225 Difference]: With dead ends: 63 [2023-11-26 11:52:16,319 INFO L226 Difference]: Without dead ends: 37 [2023-11-26 11:52:16,320 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:52:16,321 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 10 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 136 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:16,322 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 136 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:16,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2023-11-26 11:52:16,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2023-11-26 11:52:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 27 states have (on average 1.3703703703703705) internal successors, (37), 33 states have internal predecessors, (37), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:52:16,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2023-11-26 11:52:16,331 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 12 [2023-11-26 11:52:16,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:16,332 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2023-11-26 11:52:16,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.0) internal successors, (20), 9 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:16,332 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2023-11-26 11:52:16,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-26 11:52:16,333 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:16,334 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:16,342 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-26 11:52:16,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:16,540 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:16,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:16,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1776268677, now seen corresponding path program 2 times [2023-11-26 11:52:16,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:16,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164725408] [2023-11-26 11:52:16,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:16,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:16,667 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:52:16,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:16,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164725408] [2023-11-26 11:52:16,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164725408] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:16,668 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:16,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:16,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349074856] [2023-11-26 11:52:16,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:16,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:16,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:16,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:16,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:16,671 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:16,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:16,723 INFO L93 Difference]: Finished difference Result 66 states and 80 transitions. [2023-11-26 11:52:16,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:16,724 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-26 11:52:16,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:16,725 INFO L225 Difference]: With dead ends: 66 [2023-11-26 11:52:16,725 INFO L226 Difference]: Without dead ends: 42 [2023-11-26 11:52:16,726 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 11:52:16,727 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 4 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:16,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 75 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:16,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2023-11-26 11:52:16,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2023-11-26 11:52:16,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 32 states have (on average 1.34375) internal successors, (43), 38 states have internal predecessors, (43), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:52:16,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-26 11:52:16,736 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 18 [2023-11-26 11:52:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:16,737 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-26 11:52:16,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-26 11:52:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 11:52:16,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:16,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:16,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:52:16,739 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:16,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:16,739 INFO L85 PathProgramCache]: Analyzing trace with hash -1400990656, now seen corresponding path program 1 times [2023-11-26 11:52:16,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:16,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744885384] [2023-11-26 11:52:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:16,918 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:16,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:16,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744885384] [2023-11-26 11:52:16,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744885384] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:16,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021938238] [2023-11-26 11:52:16,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:16,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:16,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:16,921 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:16,949 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:52:17,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:17,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:17,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:17,117 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:17,117 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:17,214 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:52:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021938238] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:17,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:17,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 12 [2023-11-26 11:52:17,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456032171] [2023-11-26 11:52:17,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:17,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:52:17,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:17,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:52:17,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:52:17,222 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:17,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:17,319 INFO L93 Difference]: Finished difference Result 79 states and 92 transitions. [2023-11-26 11:52:17,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:52:17,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2023-11-26 11:52:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:17,324 INFO L225 Difference]: With dead ends: 79 [2023-11-26 11:52:17,325 INFO L226 Difference]: Without dead ends: 48 [2023-11-26 11:52:17,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:52:17,328 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 22 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:17,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 109 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:17,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2023-11-26 11:52:17,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2023-11-26 11:52:17,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 44 states have internal predecessors, (49), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:52:17,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 54 transitions. [2023-11-26 11:52:17,349 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 54 transitions. Word has length 23 [2023-11-26 11:52:17,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:17,349 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 54 transitions. [2023-11-26 11:52:17,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.1538461538461537) internal successors, (28), 12 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:17,350 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 54 transitions. [2023-11-26 11:52:17,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:52:17,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:17,352 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:17,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:17,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:52:17,558 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:17,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:17,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1876375616, now seen corresponding path program 2 times [2023-11-26 11:52:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:17,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530525037] [2023-11-26 11:52:17,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:17,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-26 11:52:17,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530525037] [2023-11-26 11:52:17,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530525037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:17,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1931447603] [2023-11-26 11:52:17,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:52:17,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:17,747 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:17,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:17,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:52:17,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:52:17,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:52:17,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:17,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:17,915 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-26 11:52:17,915 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:17,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1931447603] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:17,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:17,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-26 11:52:17,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063162022] [2023-11-26 11:52:17,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:17,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:52:17,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:17,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:52:17,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:52:17,919 INFO L87 Difference]: Start difference. First operand 48 states and 54 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:17,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:17,969 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2023-11-26 11:52:17,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:17,970 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2023-11-26 11:52:17,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:17,973 INFO L225 Difference]: With dead ends: 48 [2023-11-26 11:52:17,973 INFO L226 Difference]: Without dead ends: 47 [2023-11-26 11:52:17,974 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:17,975 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 9 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:17,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 67 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:17,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-26 11:52:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2023-11-26 11:52:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 38 states have (on average 1.263157894736842) internal successors, (48), 43 states have internal predecessors, (48), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:52:17,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2023-11-26 11:52:17,999 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 29 [2023-11-26 11:52:18,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:18,000 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2023-11-26 11:52:18,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:18,000 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2023-11-26 11:52:18,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 11:52:18,002 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:18,002 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:18,014 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:18,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:52:18,210 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:18,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:18,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1961897997, now seen corresponding path program 1 times [2023-11-26 11:52:18,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:18,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828042052] [2023-11-26 11:52:18,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:18,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:18,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,302 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:52:18,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:18,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828042052] [2023-11-26 11:52:18,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828042052] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:18,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:18,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:18,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815392945] [2023-11-26 11:52:18,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:18,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:18,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:18,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:18,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:18,312 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:18,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:18,348 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2023-11-26 11:52:18,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:18,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2023-11-26 11:52:18,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:18,349 INFO L225 Difference]: With dead ends: 47 [2023-11-26 11:52:18,349 INFO L226 Difference]: Without dead ends: 44 [2023-11-26 11:52:18,351 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 11:52:18,352 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 3 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:18,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 69 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-26 11:52:18,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2023-11-26 11:52:18,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 36 states have internal predecessors, (40), 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 11:52:18,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2023-11-26 11:52:18,364 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 30 [2023-11-26 11:52:18,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:18,364 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2023-11-26 11:52:18,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.666666666666667) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:52:18,365 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2023-11-26 11:52:18,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:52:18,368 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:18,368 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:18,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:52:18,368 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:18,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:18,369 INFO L85 PathProgramCache]: Analyzing trace with hash 414950324, now seen corresponding path program 1 times [2023-11-26 11:52:18,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:18,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812023733] [2023-11-26 11:52:18,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:52:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:52:18,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 11:52:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812023733] [2023-11-26 11:52:18,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812023733] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:18,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [900808835] [2023-11-26 11:52:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:18,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:18,504 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:18,532 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:52:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:52:18,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:18,633 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-26 11:52:18,633 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:18,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [900808835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:18,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:18,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 11:52:18,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053603374] [2023-11-26 11:52:18,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:18,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:18,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:18,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:18,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:18,637 INFO L87 Difference]: Start difference. First operand 40 states and 44 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, (2), 1 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 11:52:18,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:18,665 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2023-11-26 11:52:18,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:18,665 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, (2), 1 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 42 [2023-11-26 11:52:18,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:18,667 INFO L225 Difference]: With dead ends: 48 [2023-11-26 11:52:18,667 INFO L226 Difference]: Without dead ends: 47 [2023-11-26 11:52:18,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:18,668 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 41 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 11:52:18,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 41 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:18,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-26 11:52:18,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2023-11-26 11:52:18,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 35 states have (on average 1.2) internal successors, (42), 38 states have internal predecessors, (42), 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 11:52:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2023-11-26 11:52:18,675 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 42 [2023-11-26 11:52:18,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:18,677 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2023-11-26 11:52:18,677 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, (2), 1 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 11:52:18,677 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2023-11-26 11:52:18,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-26 11:52:18,678 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:18,679 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:18,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:18,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 11:52:18,886 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:18,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:18,887 INFO L85 PathProgramCache]: Analyzing trace with hash -21441751, now seen corresponding path program 1 times [2023-11-26 11:52:18,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:18,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793659090] [2023-11-26 11:52:18,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:18,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:18,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:52:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:52:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,028 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 11:52:19,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793659090] [2023-11-26 11:52:19,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793659090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:19,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313327792] [2023-11-26 11:52:19,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:19,029 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:19,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:19,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:19,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:52:19,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:52:19,148 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:19,163 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-26 11:52:19,165 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:52:19,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313327792] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:19,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:52:19,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-26 11:52:19,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518438412] [2023-11-26 11:52:19,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:19,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:19,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:19,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:19,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:19,173 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 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 11:52:19,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:19,215 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2023-11-26 11:52:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 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 43 [2023-11-26 11:52:19,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:19,217 INFO L225 Difference]: With dead ends: 48 [2023-11-26 11:52:19,217 INFO L226 Difference]: Without dead ends: 47 [2023-11-26 11:52:19,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:52:19,219 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 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 11:52:19,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:19,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2023-11-26 11:52:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2023-11-26 11:52:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 36 states have (on average 1.1944444444444444) internal successors, (43), 39 states have internal predecessors, (43), 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 11:52:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2023-11-26 11:52:19,239 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 43 [2023-11-26 11:52:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:19,240 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2023-11-26 11:52:19,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.5) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (2), 1 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 11:52:19,240 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2023-11-26 11:52:19,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-26 11:52:19,245 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:19,245 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:19,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:19,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:19,451 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:19,452 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash -664692882, now seen corresponding path program 1 times [2023-11-26 11:52:19,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:19,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154723948] [2023-11-26 11:52:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:19,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:52:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:52:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,592 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 11:52:19,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:19,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154723948] [2023-11-26 11:52:19,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154723948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:19,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900250489] [2023-11-26 11:52:19,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:19,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:19,593 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:19,594 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:19,626 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:52:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:19,710 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:52:19,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:19,739 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-26 11:52:19,739 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:19,801 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-11-26 11:52:19,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900250489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:19,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:19,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-26 11:52:19,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751307117] [2023-11-26 11:52:19,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:19,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:52:19,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:19,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:52:19,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:52:19,806 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:52:19,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:19,885 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2023-11-26 11:52:19,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:52:19,885 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2023-11-26 11:52:19,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:19,888 INFO L225 Difference]: With dead ends: 77 [2023-11-26 11:52:19,888 INFO L226 Difference]: Without dead ends: 53 [2023-11-26 11:52:19,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:52:19,890 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:19,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 122 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:19,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2023-11-26 11:52:19,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2023-11-26 11:52:19,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 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 11:52:19,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 59 transitions. [2023-11-26 11:52:19,898 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 59 transitions. Word has length 44 [2023-11-26 11:52:19,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:19,898 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 59 transitions. [2023-11-26 11:52:19,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.25) internal successors, (42), 8 states have internal predecessors, (42), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:52:19,899 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 59 transitions. [2023-11-26 11:52:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:52:19,900 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:19,900 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:19,909 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:20,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:20,107 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:20,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:20,108 INFO L85 PathProgramCache]: Analyzing trace with hash -972791186, now seen corresponding path program 2 times [2023-11-26 11:52:20,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:20,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101830312] [2023-11-26 11:52:20,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:20,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:20,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:20,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:52:20,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:20,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 11:52:20,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:20,245 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-26 11:52:20,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:20,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101830312] [2023-11-26 11:52:20,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101830312] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:20,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:20,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:20,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774202529] [2023-11-26 11:52:20,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:20,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:20,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:20,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:20,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:20,248 INFO L87 Difference]: Start difference. First operand 53 states and 59 transitions. Second operand has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 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 11:52:20,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:20,290 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2023-11-26 11:52:20,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:20,291 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 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 64 [2023-11-26 11:52:20,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:20,292 INFO L225 Difference]: With dead ends: 57 [2023-11-26 11:52:20,292 INFO L226 Difference]: Without dead ends: 55 [2023-11-26 11:52:20,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 11:52:20,293 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 3 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:20,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 59 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:20,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-26 11:52:20,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2023-11-26 11:52:20,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 48 states have (on average 1.1875) internal successors, (57), 51 states have internal predecessors, (57), 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 11:52:20,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2023-11-26 11:52:20,300 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 64 [2023-11-26 11:52:20,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:20,300 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2023-11-26 11:52:20,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.666666666666667) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 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 11:52:20,301 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2023-11-26 11:52:20,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 11:52:20,302 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:20,302 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:20,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 11:52:20,302 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:20,303 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:20,303 INFO L85 PathProgramCache]: Analyzing trace with hash 2017189271, now seen corresponding path program 1 times [2023-11-26 11:52:20,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:20,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276894412] [2023-11-26 11:52:20,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:20,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:20,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:52:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:20,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 11:52:20,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:20,496 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-26 11:52:20,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276894412] [2023-11-26 11:52:20,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276894412] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:52:20,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437436663] [2023-11-26 11:52:20,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:20,497 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:20,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:52:20,502 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:52:20,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:52:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:20,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:52:20,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:52:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 53 proven. 18 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 11:52:20,743 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:52:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-26 11:52:20,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437436663] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:52:20,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:52:20,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 9] total 14 [2023-11-26 11:52:20,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427605884] [2023-11-26 11:52:20,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:52:20,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:52:20,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:20,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:52:20,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:52:20,874 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:52:21,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:21,075 INFO L93 Difference]: Finished difference Result 108 states and 126 transitions. [2023-11-26 11:52:21,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:52:21,076 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2023-11-26 11:52:21,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:21,077 INFO L225 Difference]: With dead ends: 108 [2023-11-26 11:52:21,077 INFO L226 Difference]: Without dead ends: 72 [2023-11-26 11:52:21,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 123 SyntacticMatches, 5 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:52:21,079 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 34 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:21,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 147 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:52:21,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2023-11-26 11:52:21,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 67. [2023-11-26 11:52:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 60 states have (on average 1.1833333333333333) internal successors, (71), 63 states have internal predecessors, (71), 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 11:52:21,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2023-11-26 11:52:21,087 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 67 [2023-11-26 11:52:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:21,087 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2023-11-26 11:52:21,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.5) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-26 11:52:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2023-11-26 11:52:21,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-26 11:52:21,091 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:21,091 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:21,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:52:21,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:52:21,305 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:21,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:21,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1754255194, now seen corresponding path program 1 times [2023-11-26 11:52:21,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:21,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010652325] [2023-11-26 11:52:21,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:21,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:21,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:52:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:52:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,417 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-11-26 11:52:21,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:21,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010652325] [2023-11-26 11:52:21,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010652325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:21,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:21,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:52:21,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601458471] [2023-11-26 11:52:21,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:21,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:52:21,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:21,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:52:21,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:52:21,419 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 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 11:52:21,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:21,437 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2023-11-26 11:52:21,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:52:21,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 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 88 [2023-11-26 11:52:21,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:21,439 INFO L225 Difference]: With dead ends: 67 [2023-11-26 11:52:21,439 INFO L226 Difference]: Without dead ends: 66 [2023-11-26 11:52:21,440 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 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 11:52:21,440 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 5 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:21,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 37 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:21,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2023-11-26 11:52:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2023-11-26 11:52:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66 states, 60 states have (on average 1.1666666666666667) internal successors, (70), 62 states have internal predecessors, (70), 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 11:52:21,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2023-11-26 11:52:21,446 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 88 [2023-11-26 11:52:21,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:21,446 INFO L495 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2023-11-26 11:52:21,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 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 11:52:21,447 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2023-11-26 11:52:21,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-26 11:52:21,448 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:21,448 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:21,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-26 11:52:21,449 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:21,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:21,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1452665233, now seen corresponding path program 1 times [2023-11-26 11:52:21,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:21,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168950007] [2023-11-26 11:52:21,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:21,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:52:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:52:21,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,560 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2023-11-26 11:52:21,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:21,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168950007] [2023-11-26 11:52:21,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168950007] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:21,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:21,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:21,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540382834] [2023-11-26 11:52:21,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:21,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:21,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:21,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:21,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:21,563 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 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 11:52:21,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:21,592 INFO L93 Difference]: Finished difference Result 66 states and 74 transitions. [2023-11-26 11:52:21,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:21,592 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 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 89 [2023-11-26 11:52:21,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:21,593 INFO L225 Difference]: With dead ends: 66 [2023-11-26 11:52:21,593 INFO L226 Difference]: Without dead ends: 64 [2023-11-26 11:52:21,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:52:21,594 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:21,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 50 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:21,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-11-26 11:52:21,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 62. [2023-11-26 11:52:21,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 58 states have (on average 1.1379310344827587) internal successors, (66), 58 states have internal predecessors, (66), 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 11:52:21,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2023-11-26 11:52:21,600 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 89 [2023-11-26 11:52:21,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:21,601 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2023-11-26 11:52:21,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 1 states have call successors, (2), 1 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 11:52:21,601 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2023-11-26 11:52:21,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-26 11:52:21,602 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:52:21,602 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:21,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-26 11:52:21,603 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2023-11-26 11:52:21,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:52:21,603 INFO L85 PathProgramCache]: Analyzing trace with hash 2082949362, now seen corresponding path program 1 times [2023-11-26 11:52:21,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:52:21,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672978145] [2023-11-26 11:52:21,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:52:21,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:52:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-26 11:52:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:52:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:52:21,733 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2023-11-26 11:52:21,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:52:21,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672978145] [2023-11-26 11:52:21,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672978145] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:52:21,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:52:21,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:52:21,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060144196] [2023-11-26 11:52:21,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:52:21,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:52:21,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:52:21,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:52:21,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:52:21,736 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:52:21,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:52:21,761 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2023-11-26 11:52:21,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 11:52:21,761 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 90 [2023-11-26 11:52:21,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:52:21,762 INFO L225 Difference]: With dead ends: 62 [2023-11-26 11:52:21,762 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 11:52:21,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 11:52:21,763 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:52:21,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 50 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:52:21,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 11:52:21,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 11:52:21,764 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 11:52:21,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:52:21,765 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 90 [2023-11-26 11:52:21,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:52:21,765 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:52:21,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.666666666666666) internal successors, (26), 4 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:52:21,766 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:52:21,766 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 11:52:21,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 8 remaining) [2023-11-26 11:52:21,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 8 remaining) [2023-11-26 11:52:21,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 8 remaining) [2023-11-26 11:52:21,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 8 remaining) [2023-11-26 11:52:21,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 8 remaining) [2023-11-26 11:52:21,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 8 remaining) [2023-11-26 11:52:21,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 8 remaining) [2023-11-26 11:52:21,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 8 remaining) [2023-11-26 11:52:21,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:52:21,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 11:52:21,796 INFO L899 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2023-11-26 11:52:21,796 INFO L899 garLoopResultBuilder]: For program point L21-2(line 21) no Hoare annotation was computed. [2023-11-26 11:52:21,797 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 15 24) the Hoare annotation is: true [2023-11-26 11:52:21,797 INFO L899 garLoopResultBuilder]: For program point maxErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-26 11:52:21,797 INFO L899 garLoopResultBuilder]: For program point maxEXIT(lines 15 24) no Hoare annotation was computed. [2023-11-26 11:52:21,797 INFO L899 garLoopResultBuilder]: For program point L20-3(line 20) no Hoare annotation was computed. [2023-11-26 11:52:21,797 INFO L899 garLoopResultBuilder]: For program point L20-4(line 20) no Hoare annotation was computed. [2023-11-26 11:52:21,798 INFO L895 garLoopResultBuilder]: At program point L20-5(lines 20 22) the Hoare annotation is: (< 0 (+ 2147483649 max_~i~0)) [2023-11-26 11:52:21,798 INFO L899 garLoopResultBuilder]: For program point L20-6(lines 20 22) no Hoare annotation was computed. [2023-11-26 11:52:21,798 INFO L899 garLoopResultBuilder]: For program point maxErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2023-11-26 11:52:21,798 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-26 11:52:21,798 INFO L899 garLoopResultBuilder]: For program point L44(line 44) no Hoare annotation was computed. [2023-11-26 11:52:21,798 INFO L899 garLoopResultBuilder]: For program point L44-1(line 44) no Hoare annotation was computed. [2023-11-26 11:52:21,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2023-11-26 11:52:21,799 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 43) no Hoare annotation was computed. [2023-11-26 11:52:21,799 INFO L899 garLoopResultBuilder]: For program point L49(lines 49 51) no Hoare annotation was computed. [2023-11-26 11:52:21,799 INFO L899 garLoopResultBuilder]: For program point L49-2(lines 49 51) no Hoare annotation was computed. [2023-11-26 11:52:21,799 INFO L899 garLoopResultBuilder]: For program point L12(line 12) no Hoare annotation was computed. [2023-11-26 11:52:21,799 INFO L899 garLoopResultBuilder]: For program point L12-2(line 12) no Hoare annotation was computed. [2023-11-26 11:52:21,800 INFO L902 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: true [2023-11-26 11:52:21,800 INFO L899 garLoopResultBuilder]: For program point L41-1(line 41) no Hoare annotation was computed. [2023-11-26 11:52:21,800 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 34) no Hoare annotation was computed. [2023-11-26 11:52:21,800 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 11:52:21,800 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 43) no Hoare annotation was computed. [2023-11-26 11:52:21,800 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 11:52:21,801 INFO L902 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: true [2023-11-26 11:52:21,801 INFO L899 garLoopResultBuilder]: For program point L38-1(line 38) no Hoare annotation was computed. [2023-11-26 11:52:21,801 INFO L899 garLoopResultBuilder]: For program point L34-3(line 34) no Hoare annotation was computed. [2023-11-26 11:52:21,801 INFO L899 garLoopResultBuilder]: For program point L34-4(line 34) no Hoare annotation was computed. [2023-11-26 11:52:21,801 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 44) no Hoare annotation was computed. [2023-11-26 11:52:21,801 INFO L895 garLoopResultBuilder]: At program point L34-5(lines 34 36) the Hoare annotation is: (< 0 (+ 2147483649 |ULTIMATE.start_main_~i~1#1|)) [2023-11-26 11:52:21,802 INFO L899 garLoopResultBuilder]: For program point L34-6(lines 34 36) no Hoare annotation was computed. [2023-11-26 11:52:21,802 INFO L902 garLoopResultBuilder]: At program point L47(line 47) the Hoare annotation is: true [2023-11-26 11:52:21,802 INFO L899 garLoopResultBuilder]: For program point L47-1(line 47) no Hoare annotation was computed. [2023-11-26 11:52:21,802 INFO L899 garLoopResultBuilder]: For program point L43-3(line 43) no Hoare annotation was computed. [2023-11-26 11:52:21,802 INFO L899 garLoopResultBuilder]: For program point L43-4(line 43) no Hoare annotation was computed. [2023-11-26 11:52:21,802 INFO L895 garLoopResultBuilder]: At program point L43-5(lines 43 45) the Hoare annotation is: (< 0 (+ 2147483650 |ULTIMATE.start_main_~i~2#1|)) [2023-11-26 11:52:21,803 INFO L899 garLoopResultBuilder]: For program point L43-6(lines 43 45) no Hoare annotation was computed. [2023-11-26 11:52:21,806 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:52:21,808 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:52:21,819 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:52:21 BoogieIcfgContainer [2023-11-26 11:52:21,819 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:52:21,819 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:52:21,819 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:52:21,820 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:52:21,820 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:52:14" (3/4) ... [2023-11-26 11:52:21,822 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:52:21,826 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure max [2023-11-26 11:52:21,831 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2023-11-26 11:52:21,831 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2023-11-26 11:52:21,832 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:52:21,832 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 11:52:21,925 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:52:21,925 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:52:21,926 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:52:21,926 INFO L158 Benchmark]: Toolchain (without parser) took 8370.45ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 127.3MB in the beginning and 130.6MB in the end (delta: -3.3MB). Peak memory consumption was 31.6MB. Max. memory is 16.1GB. [2023-11-26 11:52:21,927 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:21,927 INFO L158 Benchmark]: CACSL2BoogieTranslator took 287.62ms. Allocated memory is still 165.7MB. Free memory was 126.6MB in the beginning and 116.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:52:21,927 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.09ms. Allocated memory is still 165.7MB. Free memory was 116.4MB in the beginning and 114.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:52:21,928 INFO L158 Benchmark]: Boogie Preprocessor took 81.53ms. Allocated memory is still 165.7MB. Free memory was 114.3MB in the beginning and 112.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:21,928 INFO L158 Benchmark]: RCFGBuilder took 438.57ms. Allocated memory is still 165.7MB. Free memory was 112.2MB in the beginning and 98.3MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:52:21,929 INFO L158 Benchmark]: TraceAbstraction took 7390.19ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 97.5MB in the beginning and 135.9MB in the end (delta: -38.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:52:21,929 INFO L158 Benchmark]: Witness Printer took 106.40ms. Allocated memory is still 199.2MB. Free memory was 135.9MB in the beginning and 130.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-26 11:52:21,931 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 107.0MB. Free memory is still 59.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 287.62ms. Allocated memory is still 165.7MB. Free memory was 126.6MB in the beginning and 116.4MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.09ms. Allocated memory is still 165.7MB. Free memory was 116.4MB in the beginning and 114.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 81.53ms. Allocated memory is still 165.7MB. Free memory was 114.3MB in the beginning and 112.9MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 438.57ms. Allocated memory is still 165.7MB. Free memory was 112.2MB in the beginning and 98.3MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 7390.19ms. Allocated memory was 165.7MB in the beginning and 199.2MB in the end (delta: 33.6MB). Free memory was 97.5MB in the beginning and 135.9MB in the end (delta: -38.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 106.40ms. Allocated memory is still 199.2MB. Free memory was 135.9MB in the beginning and 130.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * 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: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 34]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: 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 2 procedures, 38 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 16, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 1266 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 888 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 559 IncrementalHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 378 mSDtfsCounter, 559 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 517 GetRequests, 413 SyntacticMatches, 10 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=13, InterpolantAutomatonStates: 83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 16 MinimizatonAttempts, 22 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 37 PreInvPairs, 58 NumberOfFragments, 19 HoareAnnotationTreeSize, 37 FomulaSimplifications, 200 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 921 NumberOfCodeBlocks, 921 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1039 ConstructedInterpolants, 0 QuantifiedInterpolants, 1383 SizeOfPredicates, 10 NumberOfNonLiveVariables, 1229 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 28 InterpolantComputations, 12 PerfectInterpolantSequences, 1716/1898 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 8 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (0 < (2147483649 + i)) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (0 < (2147483649 + i)) - InvariantResult [Line: 43]: Loop Invariant Derived loop invariant: (0 < (2147483650 + i)) RESULT: Ultimate proved your program to be correct! [2023-11-26 11:52:21,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_77c8f172-91da-4b50-be79-475a4db66642/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