./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 cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/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_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX --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-cf1a783 [2023-11-12 00:14:47,923 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 00:14:47,999 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-12 00:14:48,005 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 00:14:48,006 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 00:14:48,033 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 00:14:48,034 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 00:14:48,035 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 00:14:48,036 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 00:14:48,037 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 00:14:48,038 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-12 00:14:48,038 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-12 00:14:48,039 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-12 00:14:48,040 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-12 00:14:48,041 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-12 00:14:48,041 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-12 00:14:48,042 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-12 00:14:48,043 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-12 00:14:48,054 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-12 00:14:48,055 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-12 00:14:48,056 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-12 00:14:48,057 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-12 00:14:48,058 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 00:14:48,059 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 00:14:48,059 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 00:14:48,060 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 00:14:48,061 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 00:14:48,061 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 00:14:48,062 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 00:14:48,062 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 00:14:48,063 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 00:14:48,063 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 00:14:48,064 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 00:14:48,064 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 00:14:48,065 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 00:14:48,065 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:48,066 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 00:14:48,066 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 00:14:48,067 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 00:14:48,067 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-12 00:14:48,068 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 00:14:48,068 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 00:14:48,069 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-12 00:14:48,069 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 00:14:48,070 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_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3a88d220dbbb3b8b830b41f15ad66094bc858c7c21fc995876c56b7a27538e4 [2023-11-12 00:14:48,326 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 00:14:48,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 00:14:48,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 00:14:48,353 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 00:14:48,354 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 00:14:48,355 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-12 00:14:51,420 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 00:14:52,014 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 00:14:52,015 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-12 00:14:52,061 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/data/4ffce2918/248d4cb35c044f9e8f61218ad06ce458/FLAG3db91f2f0 [2023-11-12 00:14:52,080 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/data/4ffce2918/248d4cb35c044f9e8f61218ad06ce458 [2023-11-12 00:14:52,088 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 00:14:52,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 00:14:52,096 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:52,096 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 00:14:52,102 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 00:14:52,103 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:52" (1/1) ... [2023-11-12 00:14:52,104 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b75516b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:52, skipping insertion in model container [2023-11-12 00:14:52,104 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 12:14:52" (1/1) ... [2023-11-12 00:14:52,261 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 00:14:54,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:54,244 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 00:14:54,386 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3253] [2023-11-12 00:14:54,388 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3260] [2023-11-12 00:14:54,389 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [3267] [2023-11-12 00:14:54,395 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3300] [2023-11-12 00:14:54,395 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3303] [2023-11-12 00:14:54,396 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3306] [2023-11-12 00:14:54,409 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3309] [2023-11-12 00:14:54,483 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3993] [2023-11-12 00:14:54,484 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3997] [2023-11-12 00:14:54,487 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [4020] [2023-11-12 00:14:54,488 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [4025] [2023-11-12 00:14:54,488 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [4030] [2023-11-12 00:14:54,492 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [4035] [2023-11-12 00:14:54,536 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4494] [2023-11-12 00:14:54,723 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 00:14:54,818 WARN L672 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:54,818 WARN L672 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 00:14:54,826 INFO L206 MainTranslator]: Completed translation [2023-11-12 00:14:54,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54 WrapperNode [2023-11-12 00:14:54,827 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 00:14:54,829 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:54,830 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 00:14:54,830 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 00:14:54,838 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:54,991 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,166 INFO L138 Inliner]: procedures = 240, calls = 2469, calls flagged for inlining = 112, calls inlined = 63, statements flattened = 2665 [2023-11-12 00:14:55,166 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 00:14:55,167 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 00:14:55,167 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 00:14:55,168 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 00:14:55,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,203 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,203 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,301 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,321 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,336 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,385 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 00:14:55,386 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 00:14:55,386 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 00:14:55,386 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 00:14:55,387 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (1/1) ... [2023-11-12 00:14:55,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 00:14:55,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:14:55,429 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 00:14:55,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 00:14:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-12 00:14:55,481 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-12 00:14:55,481 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-12 00:14:55,482 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-12 00:14:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-12 00:14:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-12 00:14:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-12 00:14:55,484 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-12 00:14:55,484 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-12 00:14:55,485 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-12 00:14:55,485 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-12 00:14:55,486 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-12 00:14:55,486 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-12 00:14:55,487 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 00:14:55,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 00:14:55,489 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-12 00:14:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-12 00:14:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-12 00:14:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-12 00:14:55,490 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-12 00:14:55,490 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-12 00:14:55,491 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-12 00:14:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-12 00:14:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 00:14:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 00:14:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-12 00:14:55,492 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-12 00:14:55,492 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-12 00:14:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-12 00:14:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-12 00:14:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-12 00:14:55,493 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-12 00:14:55,493 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-12 00:14:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2023-11-12 00:14:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2023-11-12 00:14:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 00:14:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-12 00:14:55,494 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-12 00:14:55,494 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 00:14:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-12 00:14:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-12 00:14:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-12 00:14:55,495 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-12 00:14:55,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 00:14:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 00:14:55,496 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 00:14:55,496 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 00:14:55,497 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-12 00:14:55,497 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-12 00:14:55,498 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-12 00:14:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-12 00:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-12 00:14:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-12 00:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-12 00:14:55,499 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-12 00:14:55,499 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-12 00:14:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-12 00:14:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-12 00:14:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-12 00:14:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-12 00:14:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-12 00:14:55,500 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-12 00:14:55,500 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-12 00:14:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-12 00:14:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-12 00:14:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-12 00:14:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-12 00:14:55,501 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-12 00:14:55,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-12 00:14:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-12 00:14:55,502 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-12 00:14:55,502 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-12 00:14:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-12 00:14:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-12 00:14:55,503 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-12 00:14:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 00:14:55,503 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-12 00:14:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-12 00:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-12 00:14:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-12 00:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 00:14:55,504 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 00:14:55,504 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-12 00:14:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-12 00:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-12 00:14:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-12 00:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-12 00:14:55,505 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-12 00:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 00:14:55,505 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-12 00:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-12 00:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-12 00:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-12 00:14:55,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 00:14:55,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 00:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2023-11-12 00:14:55,507 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2023-11-12 00:14:55,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 00:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-12 00:14:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-12 00:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-12 00:14:55,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-12 00:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 00:14:55,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 00:14:55,509 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-12 00:14:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-12 00:14:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-12 00:14:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-12 00:14:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-12 00:14:55,510 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-12 00:14:55,510 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-12 00:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2023-11-12 00:14:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2023-11-12 00:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-12 00:14:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-12 00:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-12 00:14:55,511 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-12 00:14:55,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 00:14:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-12 00:14:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-12 00:14:55,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 00:14:55,512 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 00:14:55,995 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 00:14:55,998 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 00:15:00,417 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 00:15:01,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 00:15:01,375 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 00:15:01,381 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:01 BoogieIcfgContainer [2023-11-12 00:15:01,381 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 00:15:01,386 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 00:15:01,387 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 00:15:01,390 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 00:15:01,391 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 12:14:52" (1/3) ... [2023-11-12 00:15:01,393 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf944b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:01, skipping insertion in model container [2023-11-12 00:15:01,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 12:14:54" (2/3) ... [2023-11-12 00:15:01,398 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2dcf944b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 12:15:01, skipping insertion in model container [2023-11-12 00:15:01,400 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 12:15:01" (3/3) ... [2023-11-12 00:15:01,402 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-12 00:15:01,427 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 00:15:01,427 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-12 00:15:01,531 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 00:15:01,540 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;@4600dc0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-12 00:15:01,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-12 00:15:01,559 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) [2023-11-12 00:15:01,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-12 00:15:01,580 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:01,581 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] [2023-11-12 00:15:01,582 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)] === [2023-11-12 00:15:01,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:01,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1801832502, now seen corresponding path program 1 times [2023-11-12 00:15:01,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:01,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126403503] [2023-11-12 00:15:01,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:01,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:02,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 00:15:02,706 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:02,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [126403503] [2023-11-12 00:15:02,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [126403503] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:02,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:02,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 00:15:02,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819395450] [2023-11-12 00:15:02,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:02,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:02,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:02,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:02,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:02,767 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) [2023-11-12 00:15:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:04,472 INFO L93 Difference]: Finished difference Result 1368 states and 1928 transitions. [2023-11-12 00:15:04,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:04,475 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 [2023-11-12 00:15:04,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:04,502 INFO L225 Difference]: With dead ends: 1368 [2023-11-12 00:15:04,502 INFO L226 Difference]: Without dead ends: 682 [2023-11-12 00:15:04,518 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 [2023-11-12 00:15:04,522 INFO L413 NwaCegarLoop]: 829 mSDtfsCounter, 249 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:04,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 1322 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:15:04,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-12 00:15:04,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 682. [2023-11-12 00:15:04,635 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) [2023-11-12 00:15:04,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 940 transitions. [2023-11-12 00:15:04,644 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 940 transitions. Word has length 34 [2023-11-12 00:15:04,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:04,646 INFO L495 AbstractCegarLoop]: Abstraction has 682 states and 940 transitions. [2023-11-12 00:15:04,646 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) [2023-11-12 00:15:04,647 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 940 transitions. [2023-11-12 00:15:04,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-12 00:15:04,654 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:04,655 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] [2023-11-12 00:15:04,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 00:15:04,655 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)] === [2023-11-12 00:15:04,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:04,656 INFO L85 PathProgramCache]: Analyzing trace with hash -557275613, now seen corresponding path program 1 times [2023-11-12 00:15:04,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:04,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136884660] [2023-11-12 00:15:04,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:04,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:04,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:05,466 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:15:05,466 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:05,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136884660] [2023-11-12 00:15:05,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136884660] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:05,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 00:15:05,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 00:15:05,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333335610] [2023-11-12 00:15:05,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:05,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 00:15:05,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:05,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 00:15:05,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 00:15:05,472 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) [2023-11-12 00:15:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:07,064 INFO L93 Difference]: Finished difference Result 724 states and 1006 transitions. [2023-11-12 00:15:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 00:15:07,064 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 [2023-11-12 00:15:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:07,074 INFO L225 Difference]: With dead ends: 724 [2023-11-12 00:15:07,074 INFO L226 Difference]: Without dead ends: 722 [2023-11-12 00:15:07,075 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 [2023-11-12 00:15:07,077 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 36 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:07,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1649 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:15:07,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2023-11-12 00:15:07,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 697. [2023-11-12 00:15:07,135 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) [2023-11-12 00:15:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 964 transitions. [2023-11-12 00:15:07,142 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 964 transitions. Word has length 92 [2023-11-12 00:15:07,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:07,143 INFO L495 AbstractCegarLoop]: Abstraction has 697 states and 964 transitions. [2023-11-12 00:15:07,144 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) [2023-11-12 00:15:07,144 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 964 transitions. [2023-11-12 00:15:07,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-12 00:15:07,150 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:07,150 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] [2023-11-12 00:15:07,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 00:15:07,151 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)] === [2023-11-12 00:15:07,151 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:07,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1206809071, now seen corresponding path program 1 times [2023-11-12 00:15:07,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:07,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763078753] [2023-11-12 00:15:07,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:07,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:07,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:15:07,887 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:07,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763078753] [2023-11-12 00:15:07,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763078753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:15:07,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1181519711] [2023-11-12 00:15:07,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:07,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:07,890 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:07,893 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:15:07,921 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 00:15:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:08,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 3611 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:15:08,998 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:09,078 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:15:09,081 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 00:15:09,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1181519711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 00:15:09,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 00:15:09,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 00:15:09,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432817418] [2023-11-12 00:15:09,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 00:15:09,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 00:15:09,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-12 00:15:09,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 00:15:09,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 00:15:09,092 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) [2023-11-12 00:15:10,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 00:15:10,688 INFO L93 Difference]: Finished difference Result 722 states and 1004 transitions. [2023-11-12 00:15:10,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 00:15:10,691 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 [2023-11-12 00:15:10,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 00:15:10,698 INFO L225 Difference]: With dead ends: 722 [2023-11-12 00:15:10,698 INFO L226 Difference]: Without dead ends: 721 [2023-11-12 00:15:10,699 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 [2023-11-12 00:15:10,700 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 84 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s 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, 1.5s IncrementalHoareTripleChecker+Time [2023-11-12 00:15:10,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1656 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-12 00:15:10,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 721 states. [2023-11-12 00:15:10,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 721 to 696. [2023-11-12 00:15:10,763 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) [2023-11-12 00:15:10,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 963 transitions. [2023-11-12 00:15:10,769 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 963 transitions. Word has length 97 [2023-11-12 00:15:10,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 00:15:10,770 INFO L495 AbstractCegarLoop]: Abstraction has 696 states and 963 transitions. [2023-11-12 00:15:10,770 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) [2023-11-12 00:15:10,770 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 963 transitions. [2023-11-12 00:15:10,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-12 00:15:10,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 00:15:10,773 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] [2023-11-12 00:15:10,786 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 00:15:10,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:10,986 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)] === [2023-11-12 00:15:10,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 00:15:10,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1243624858, now seen corresponding path program 1 times [2023-11-12 00:15:10,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-12 00:15:10,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911099142] [2023-11-12 00:15:10,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:10,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 00:15:11,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:15:11,507 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-12 00:15:11,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911099142] [2023-11-12 00:15:11,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911099142] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 00:15:11,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392093398] [2023-11-12 00:15:11,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 00:15:11,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 00:15:11,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 [2023-11-12 00:15:11,509 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 00:15:11,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7fed2c26-8420-427f-9038-49164e663fc9/bin/utaipan-verify-NcY6lQBIFX/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 00:15:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 00:15:12,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 3612 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 00:15:12,530 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 00:15:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:15:12,565 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 00:15:12,700 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-12 00:15:12,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392093398] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 00:15:12,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [888316076] [2023-11-12 00:15:12,726 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2023-11-12 00:15:12,726 INFO L166 IcfgInterpreter]: Building call graph [2023-11-12 00:15:12,730 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-12 00:15:12,736 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-12 00:15:12,737 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs