./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-rc-imon--32_7a--a9e7fb5.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-rc-imon--32_7a--a9e7fb5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash c3a88d220dbbb3b8b830b41f15ad66094bc858c7c21fc995876c56b7a27538e4 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 05:12:20,466 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 05:12:20,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-19 05:12:20,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 05:12:20,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 05:12:20,611 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 05:12:20,612 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 05:12:20,612 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 05:12:20,613 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 05:12:20,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 05:12:20,614 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 05:12:20,615 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 05:12:20,616 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 05:12:20,616 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 05:12:20,617 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 05:12:20,617 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 05:12:20,618 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 05:12:20,618 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 05:12:20,619 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 05:12:20,620 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 05:12:20,620 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 05:12:20,621 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 05:12:20,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 05:12:20,622 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 05:12:20,623 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 05:12:20,624 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 05:12:20,624 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 05:12:20,625 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 05:12:20,625 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 05:12:20,626 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 05:12:20,626 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 05:12:20,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 05:12:20,627 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 05:12:20,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 05:12:20,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 05:12:20,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:20,629 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 05:12:20,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 05:12:20,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 05:12:20,631 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 05:12:20,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 05:12:20,632 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 05:12:20,632 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 05:12:20,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 05:12:20,633 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3a88d220dbbb3b8b830b41f15ad66094bc858c7c21fc995876c56b7a27538e4 [2023-11-19 05:12:20,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 05:12:20,890 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 05:12:20,893 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 05:12:20,895 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 05:12:20,896 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 05:12:20,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-19 05:12:24,030 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 05:12:24,870 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 05:12:24,871 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-19 05:12:24,925 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/data/d74541ed5/9f6013e284724a778e051430b559b181/FLAGdf8a37c19 [2023-11-19 05:12:24,944 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/data/d74541ed5/9f6013e284724a778e051430b559b181 [2023-11-19 05:12:24,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 05:12:24,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 05:12:24,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:24,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 05:12:24,967 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 05:12:24,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:24" (1/1) ... [2023-11-19 05:12:24,973 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f49f136 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:24, skipping insertion in model container [2023-11-19 05:12:24,973 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:12:24" (1/1) ... [2023-11-19 05:12:25,125 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 05:12:27,344 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:27,380 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 05:12:27,448 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3253] [2023-11-19 05:12:27,450 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3260] [2023-11-19 05:12:27,451 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [3267] [2023-11-19 05:12:27,452 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3300] [2023-11-19 05:12:27,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3303] [2023-11-19 05:12:27,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3306] [2023-11-19 05:12:27,453 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3309] [2023-11-19 05:12:27,571 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3993] [2023-11-19 05:12:27,573 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3997] [2023-11-19 05:12:27,576 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [4020] [2023-11-19 05:12:27,577 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [4025] [2023-11-19 05:12:27,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [4030] [2023-11-19 05:12:27,578 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [4035] [2023-11-19 05:12:27,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4494] [2023-11-19 05:12:27,781 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 05:12:27,873 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:12:27,873 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 05:12:27,881 INFO L206 MainTranslator]: Completed translation [2023-11-19 05:12:27,881 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27 WrapperNode [2023-11-19 05:12:27,882 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 05:12:27,883 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 05:12:27,883 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 05:12:27,883 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 05:12:27,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:27,997 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,159 INFO L138 Inliner]: procedures = 240, calls = 2469, calls flagged for inlining = 112, calls inlined = 63, statements flattened = 2665 [2023-11-19 05:12:28,160 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 05:12:28,161 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 05:12:28,161 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 05:12:28,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 05:12:28,171 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,188 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,189 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,270 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,282 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,306 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,327 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 05:12:28,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 05:12:28,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 05:12:28,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 05:12:28,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (1/1) ... [2023-11-19 05:12:28,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 05:12:28,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:28,393 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 05:12:28,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 05:12:28,428 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-19 05:12:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-19 05:12:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-19 05:12:28,429 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-19 05:12:28,429 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-19 05:12:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-19 05:12:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-19 05:12:28,430 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-19 05:12:28,430 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-19 05:12:28,431 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-19 05:12:28,431 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-19 05:12:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-19 05:12:28,432 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-19 05:12:28,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-19 05:12:28,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-19 05:12:28,434 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-19 05:12:28,434 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-19 05:12:28,435 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-19 05:12:28,435 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-19 05:12:28,435 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-19 05:12:28,435 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-19 05:12:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-19 05:12:28,436 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-19 05:12:28,436 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-19 05:12:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-19 05:12:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-19 05:12:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-19 05:12:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-19 05:12:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-19 05:12:28,437 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-19 05:12:28,437 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-19 05:12:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-19 05:12:28,438 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-19 05:12:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2023-11-19 05:12:28,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2023-11-19 05:12:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 05:12:28,438 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-19 05:12:28,439 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-19 05:12:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 05:12:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-19 05:12:28,439 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-19 05:12:28,439 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-19 05:12:28,439 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-19 05:12:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 05:12:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-19 05:12:28,440 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-19 05:12:28,440 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-19 05:12:28,441 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-19 05:12:28,442 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-19 05:12:28,442 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-19 05:12:28,442 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-19 05:12:28,442 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-19 05:12:28,443 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-19 05:12:28,443 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-19 05:12:28,443 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-19 05:12:28,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-19 05:12:28,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-19 05:12:28,443 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-19 05:12:28,444 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-19 05:12:28,444 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-19 05:12:28,444 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-19 05:12:28,444 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-19 05:12:28,444 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-19 05:12:28,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-19 05:12:28,445 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-19 05:12:28,445 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-19 05:12:28,445 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-19 05:12:28,445 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-19 05:12:28,445 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-19 05:12:28,446 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-19 05:12:28,446 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-19 05:12:28,446 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-19 05:12:28,447 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-19 05:12:28,447 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-19 05:12:28,447 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-19 05:12:28,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 05:12:28,447 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-19 05:12:28,448 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-19 05:12:28,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-19 05:12:28,448 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-19 05:12:28,448 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-19 05:12:28,448 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-19 05:12:28,448 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-19 05:12:28,448 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-19 05:12:28,449 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-19 05:12:28,449 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-19 05:12:28,449 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-19 05:12:28,449 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-19 05:12:28,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 05:12:28,449 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-19 05:12:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-19 05:12:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-19 05:12:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-19 05:12:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-19 05:12:28,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-19 05:12:28,450 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2023-11-19 05:12:28,451 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2023-11-19 05:12:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 05:12:28,451 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-19 05:12:28,452 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-19 05:12:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-19 05:12:28,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-19 05:12:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 05:12:28,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 05:12:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-19 05:12:28,453 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-19 05:12:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-19 05:12:28,453 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-19 05:12:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-19 05:12:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-19 05:12:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-19 05:12:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2023-11-19 05:12:28,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2023-11-19 05:12:28,454 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-19 05:12:28,455 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-19 05:12:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-19 05:12:28,455 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-19 05:12:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 05:12:28,455 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-19 05:12:28,456 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-19 05:12:28,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 05:12:28,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 05:12:28,926 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 05:12:28,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 05:12:33,331 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 05:12:34,069 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 05:12:34,070 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 05:12:34,080 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:34 BoogieIcfgContainer [2023-11-19 05:12:34,080 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 05:12:34,082 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 05:12:34,082 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 05:12:34,085 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 05:12:34,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:12:24" (1/3) ... [2023-11-19 05:12:34,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760ee9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:12:34, skipping insertion in model container [2023-11-19 05:12:34,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:12:27" (2/3) ... [2023-11-19 05:12:34,087 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760ee9ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:12:34, skipping insertion in model container [2023-11-19 05:12:34,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:12:34" (3/3) ... [2023-11-19 05:12:34,088 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-19 05:12:34,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 05:12:34,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-19 05:12:34,176 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 05:12:34,182 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=FINITE_AUTOMATA, 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;@7c8755a2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 05:12:34,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-19 05:12:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 678 states, 394 states have (on average 1.3071065989847717) internal successors, (515), 426 states have internal predecessors, (515), 213 states have call successors, (213), 52 states have call predecessors, (213), 52 states have return successors, (213), 212 states have call predecessors, (213), 213 states have call successors, (213) [2023-11-19 05:12:34,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-19 05:12:34,202 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:34,202 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:34,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __create_pipeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __create_pipeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 05:12:34,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:34,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1801832502, now seen corresponding path program 1 times [2023-11-19 05:12:34,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:34,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984773742] [2023-11-19 05:12:34,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:34,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 05:12:35,153 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:35,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984773742] [2023-11-19 05:12:35,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984773742] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:35,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:35,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 05:12:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82983494] [2023-11-19 05:12:35,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:35,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:35,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:35,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:35,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:35,205 INFO L87 Difference]: Start difference. First operand has 678 states, 394 states have (on average 1.3071065989847717) internal successors, (515), 426 states have internal predecessors, (515), 213 states have call successors, (213), 52 states have call predecessors, (213), 52 states have return successors, (213), 212 states have call predecessors, (213), 213 states have call successors, (213) Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 05:12:36,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:36,757 INFO L93 Difference]: Finished difference Result 1368 states and 1928 transitions. [2023-11-19 05:12:36,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:36,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 34 [2023-11-19 05:12:36,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:36,785 INFO L225 Difference]: With dead ends: 1368 [2023-11-19 05:12:36,785 INFO L226 Difference]: Without dead ends: 682 [2023-11-19 05:12:36,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:36,799 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 249 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:36,800 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1322 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-19 05:12:36,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-19 05:12:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2023-11-19 05:12:36,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 682 states, 405 states have (on average 1.2839506172839505) internal successors, (520), 427 states have internal predecessors, (520), 210 states have call successors, (210), 51 states have call predecessors, (210), 51 states have return successors, (210), 209 states have call predecessors, (210), 210 states have call successors, (210) [2023-11-19 05:12:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 940 transitions. [2023-11-19 05:12:36,945 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 940 transitions. Word has length 34 [2023-11-19 05:12:36,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:36,946 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 940 transitions. [2023-11-19 05:12:36,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-19 05:12:36,947 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 940 transitions. [2023-11-19 05:12:36,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-19 05:12:36,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:36,962 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:36,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 05:12:36,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting imon_find_endpointsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __create_pipeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __create_pipeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 05:12:36,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:36,964 INFO L85 PathProgramCache]: Analyzing trace with hash -557275613, now seen corresponding path program 1 times [2023-11-19 05:12:36,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:36,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986460619] [2023-11-19 05:12:36,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:36,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:12:37,788 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:37,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986460619] [2023-11-19 05:12:37,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986460619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:37,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 05:12:37,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 05:12:37,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731183753] [2023-11-19 05:12:37,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:37,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 05:12:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:37,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 05:12:37,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:37,794 INFO L87 Difference]: Start difference. First operand 682 states and 940 transitions. Second operand has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 05:12:38,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:38,976 INFO L93 Difference]: Finished difference Result 724 states and 1006 transitions. [2023-11-19 05:12:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 05:12:38,977 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 92 [2023-11-19 05:12:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:38,986 INFO L225 Difference]: With dead ends: 724 [2023-11-19 05:12:38,986 INFO L226 Difference]: Without dead ends: 722 [2023-11-19 05:12:38,987 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 05:12:38,988 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 36 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1649 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:38,989 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1649 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-19 05:12:38,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-19 05:12:39,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 697. [2023-11-19 05:12:39,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 416 states have (on average 1.2884615384615385) internal successors, (536), 438 states have internal predecessors, (536), 214 states have call successors, (214), 51 states have call predecessors, (214), 51 states have return successors, (214), 213 states have call predecessors, (214), 214 states have call successors, (214) [2023-11-19 05:12:39,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 964 transitions. [2023-11-19 05:12:39,057 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 964 transitions. Word has length 92 [2023-11-19 05:12:39,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:39,058 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 964 transitions. [2023-11-19 05:12:39,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 23.5) internal successors, (47), 3 states have internal predecessors, (47), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 05:12:39,059 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 964 transitions. [2023-11-19 05:12:39,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-19 05:12:39,062 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:39,062 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:39,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 05:12:39,063 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting imon_find_endpointsErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [__create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __create_pipeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __create_pipeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 05:12:39,064 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:39,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1206809071, now seen corresponding path program 1 times [2023-11-19 05:12:39,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:39,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583964352] [2023-11-19 05:12:39,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:39,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:39,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:12:39,834 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:39,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583964352] [2023-11-19 05:12:39,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583964352] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:12:39,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502336937] [2023-11-19 05:12:39,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:39,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:39,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:39,838 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:39,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 05:12:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:40,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 3611 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:12:40,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:40,907 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:12:40,907 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 05:12:40,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502336937] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 05:12:40,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 05:12:40,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 05:12:40,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144175947] [2023-11-19 05:12:40,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 05:12:40,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 05:12:40,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 05:12:40,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 05:12:40,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:12:40,920 INFO L87 Difference]: Start difference. First operand 697 states and 964 transitions. Second operand has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 05:12:41,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 05:12:41,989 INFO L93 Difference]: Finished difference Result 722 states and 1004 transitions. [2023-11-19 05:12:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 05:12:41,990 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 97 [2023-11-19 05:12:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 05:12:41,997 INFO L225 Difference]: With dead ends: 722 [2023-11-19 05:12:41,997 INFO L226 Difference]: Without dead ends: 721 [2023-11-19 05:12:41,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 05:12:41,999 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 84 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1656 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-19 05:12:41,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1656 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-19 05:12:42,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-11-19 05:12:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 696. [2023-11-19 05:12:42,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 416 states have (on average 1.2860576923076923) internal successors, (535), 437 states have internal predecessors, (535), 214 states have call successors, (214), 51 states have call predecessors, (214), 51 states have return successors, (214), 213 states have call predecessors, (214), 214 states have call successors, (214) [2023-11-19 05:12:42,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 963 transitions. [2023-11-19 05:12:42,045 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 963 transitions. Word has length 97 [2023-11-19 05:12:42,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 05:12:42,046 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 963 transitions. [2023-11-19 05:12:42,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.333333333333332) internal successors, (52), 4 states have internal predecessors, (52), 1 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2023-11-19 05:12:42,046 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 963 transitions. [2023-11-19 05:12:42,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-19 05:12:42,049 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 05:12:42,049 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 05:12:42,082 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 05:12:42,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:42,272 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting imon_find_endpointsErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [__create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, __create_pipeErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, __create_pipeErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-11-19 05:12:42,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 05:12:42,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1243624858, now seen corresponding path program 1 times [2023-11-19 05:12:42,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 05:12:42,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161551565] [2023-11-19 05:12:42,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:42,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 05:12:42,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:12:42,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 05:12:42,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161551565] [2023-11-19 05:12:42,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161551565] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 05:12:42,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773099741] [2023-11-19 05:12:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 05:12:42,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 05:12:42,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 05:12:42,947 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 05:12:42,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_49142e03-ab60-47cf-9266-9fb7731d4b17/bin/utaipan-verify-t7M7D8N6sZ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 05:12:43,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 05:12:43,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 3612 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 05:12:43,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 05:12:44,017 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:12:44,017 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 05:12:44,132 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 05:12:44,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773099741] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 05:12:44,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [101576619] [2023-11-19 05:12:44,162 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2023-11-19 05:12:44,162 INFO L166 IcfgInterpreter]: Building call graph [2023-11-19 05:12:44,167 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-19 05:12:44,174 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-19 05:12:44,174 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs