./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 0e0057cc 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_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/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_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91 --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 0.2.4-dev-0e0057c [2023-11-24 23:53:10,657 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-24 23:53:10,795 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/config/svcomp-Overflow-64bit-Taipan_Default.epf [2023-11-24 23:53:10,805 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-24 23:53:10,806 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-24 23:53:10,862 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-24 23:53:10,864 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-24 23:53:10,864 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-24 23:53:10,866 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-24 23:53:10,872 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-24 23:53:10,873 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-24 23:53:10,874 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-24 23:53:10,875 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-24 23:53:10,877 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-24 23:53:10,878 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-24 23:53:10,879 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-24 23:53:10,879 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-24 23:53:10,880 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-24 23:53:10,881 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-24 23:53:10,882 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-24 23:53:10,882 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-24 23:53:10,883 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-24 23:53:10,885 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-24 23:53:10,885 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-24 23:53:10,886 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-24 23:53:10,887 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-24 23:53:10,887 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-24 23:53:10,888 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-24 23:53:10,888 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-24 23:53:10,889 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-24 23:53:10,891 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-24 23:53:10,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-24 23:53:10,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-24 23:53:10,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-24 23:53:10,892 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-24 23:53:10,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-24 23:53:10,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:53:10,894 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-24 23:53:10,894 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-24 23:53:10,895 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-24 23:53:10,895 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-24 23:53:10,896 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-24 23:53:10,896 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-24 23:53:10,897 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-24 23:53:10,898 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-24 23:53:10,898 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-24 23:53:10,899 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_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3a88d220dbbb3b8b830b41f15ad66094bc858c7c21fc995876c56b7a27538e4 [2023-11-24 23:53:11,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-24 23:53:11,342 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-24 23:53:11,347 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-24 23:53:11,349 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-24 23:53:11,351 INFO L274 PluginConnector]: CDTParser initialized [2023-11-24 23:53:11,353 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/../../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-24 23:53:14,685 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-24 23:53:15,492 INFO L384 CDTParser]: Found 1 translation units. [2023-11-24 23:53:15,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-24 23:53:15,538 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/data/e2b2760b8/6711c2d9529c4ba6b5bb12d57a45a01a/FLAGae5afc8be [2023-11-24 23:53:15,561 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/data/e2b2760b8/6711c2d9529c4ba6b5bb12d57a45a01a [2023-11-24 23:53:15,574 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-24 23:53:15,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-24 23:53:15,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-24 23:53:15,585 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-24 23:53:15,592 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-24 23:53:15,593 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:53:15" (1/1) ... [2023-11-24 23:53:15,595 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d817ce3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:15, skipping insertion in model container [2023-11-24 23:53:15,595 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 11:53:15" (1/1) ... [2023-11-24 23:53:15,765 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-24 23:53:18,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:53:18,517 INFO L202 MainTranslator]: Completed pre-run [2023-11-24 23:53:18,593 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("bts %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr): "memory"); [3253] [2023-11-24 23:53:18,595 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapl %0": "=r" (val): "0" (val)); [3260] [2023-11-24 23:53:18,596 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("bswapq %0": "=r" (val): "0" (val)); [3267] [2023-11-24 23:53:18,597 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movb %%gs:%P1,%0": "=q" (pfo_ret__): "p" (& current_task)); [3300] [2023-11-24 23:53:18,598 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movw %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3303] [2023-11-24 23:53:18,598 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movl %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3306] [2023-11-24 23:53:18,599 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ ("movq %%gs:%P1,%0": "=r" (pfo_ret__): "p" (& current_task)); [3309] [2023-11-24 23:53:18,641 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3993] [2023-11-24 23:53:18,642 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [3997] [2023-11-24 23:53:18,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgb %0,%1": "=q" (__x), "+m" (*__ptr): "0" (__x): "memory"); [4020] [2023-11-24 23:53:18,644 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgw %0,%1": "=r" (__x), "+m" (*__ptr___0): "0" (__x): "memory"); [4025] [2023-11-24 23:53:18,645 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgl %0,%1": "=r" (__x), "+m" (*__ptr___1): "0" (__x): "memory"); [4030] [2023-11-24 23:53:18,646 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("xchgq %0,%1": "=r" (__x), "+m" (*__ptr___2): "0" (__x): "memory"); [4035] [2023-11-24 23:53:18,672 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("": : : "memory"); [4494] [2023-11-24 23:53:18,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-24 23:53:18,999 WARN L675 CHandler]: The function __xchg_wrong_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:18,999 WARN L675 CHandler]: The function __bad_percpu_size is called, but not defined or handled by StandardFunctionHandler. [2023-11-24 23:53:19,008 INFO L206 MainTranslator]: Completed translation [2023-11-24 23:53:19,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19 WrapperNode [2023-11-24 23:53:19,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-24 23:53:19,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-24 23:53:19,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-24 23:53:19,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-24 23:53:19,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,124 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,318 INFO L138 Inliner]: procedures = 240, calls = 2469, calls flagged for inlining = 112, calls inlined = 63, statements flattened = 2751 [2023-11-24 23:53:19,319 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-24 23:53:19,320 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-24 23:53:19,320 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-24 23:53:19,322 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-24 23:53:19,334 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,335 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,378 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,378 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,598 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,627 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,688 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,715 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-24 23:53:19,716 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-24 23:53:19,717 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-24 23:53:19,717 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-24 23:53:19,718 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (1/1) ... [2023-11-24 23:53:19,726 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-24 23:53:19,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:19,767 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-24 23:53:19,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-24 23:53:19,827 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2023-11-24 23:53:19,827 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2023-11-24 23:53:19,828 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-24 23:53:19,828 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-24 23:53:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2023-11-24 23:53:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2023-11-24 23:53:19,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2023-11-24 23:53:19,830 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2023-11-24 23:53:19,830 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2023-11-24 23:53:19,831 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2023-11-24 23:53:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2023-11-24 23:53:19,832 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2023-11-24 23:53:19,832 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2023-11-24 23:53:19,835 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-24 23:53:19,836 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-24 23:53:19,836 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2023-11-24 23:53:19,836 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2023-11-24 23:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure dev_printk [2023-11-24 23:53:19,837 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_printk [2023-11-24 23:53:19,837 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2023-11-24 23:53:19,838 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2023-11-24 23:53:19,838 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-11-24 23:53:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-11-24 23:53:19,839 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-24 23:53:19,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-24 23:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2023-11-24 23:53:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2023-11-24 23:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-24 23:53:19,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2023-11-24 23:53:19,840 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-11-24 23:53:19,841 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-11-24 23:53:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2023-11-24 23:53:19,841 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2023-11-24 23:53:19,841 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2023-11-24 23:53:19,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2023-11-24 23:53:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-24 23:53:19,842 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2023-11-24 23:53:19,842 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2023-11-24 23:53:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-24 23:53:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2023-11-24 23:53:19,843 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2023-11-24 23:53:19,843 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2023-11-24 23:53:19,844 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2023-11-24 23:53:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-24 23:53:19,844 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-24 23:53:19,845 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-24 23:53:19,846 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-24 23:53:19,847 INFO L130 BoogieDeclarations]: Found specification of procedure dev_err [2023-11-24 23:53:19,847 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_err [2023-11-24 23:53:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2023-11-24 23:53:19,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2023-11-24 23:53:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2023-11-24 23:53:19,848 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2023-11-24 23:53:19,848 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-24 23:53:19,849 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-24 23:53:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2023-11-24 23:53:19,849 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2023-11-24 23:53:19,849 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2023-11-24 23:53:19,850 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2023-11-24 23:53:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2023-11-24 23:53:19,850 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2023-11-24 23:53:19,850 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2023-11-24 23:53:19,851 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2023-11-24 23:53:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2023-11-24 23:53:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2023-11-24 23:53:19,852 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2023-11-24 23:53:19,852 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2023-11-24 23:53:19,853 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2023-11-24 23:53:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2023-11-24 23:53:19,853 INFO L130 BoogieDeclarations]: Found specification of procedure _dev_info [2023-11-24 23:53:19,854 INFO L138 BoogieDeclarations]: Found implementation of procedure _dev_info [2023-11-24 23:53:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2023-11-24 23:53:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2023-11-24 23:53:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2023-11-24 23:53:19,855 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2023-11-24 23:53:19,855 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-24 23:53:19,856 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2023-11-24 23:53:19,856 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2023-11-24 23:53:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2023-11-24 23:53:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2023-11-24 23:53:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-24 23:53:19,857 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-24 23:53:19,857 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2023-11-24 23:53:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2023-11-24 23:53:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2023-11-24 23:53:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2023-11-24 23:53:19,858 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2023-11-24 23:53:19,858 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2023-11-24 23:53:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-24 23:53:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2023-11-24 23:53:19,859 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2023-11-24 23:53:19,859 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2023-11-24 23:53:19,860 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2023-11-24 23:53:19,860 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-24 23:53:19,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-24 23:53:19,861 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2023-11-24 23:53:19,861 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2023-11-24 23:53:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-24 23:53:19,862 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2023-11-24 23:53:19,862 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2023-11-24 23:53:19,863 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-24 23:53:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2023-11-24 23:53:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-24 23:53:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-24 23:53:19,864 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2023-11-24 23:53:19,864 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2023-11-24 23:53:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2023-11-24 23:53:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2023-11-24 23:53:19,865 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2023-11-24 23:53:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2023-11-24 23:53:19,866 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2023-11-24 23:53:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2023-11-24 23:53:19,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2023-11-24 23:53:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2023-11-24 23:53:19,866 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2023-11-24 23:53:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2023-11-24 23:53:19,867 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2023-11-24 23:53:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-24 23:53:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2023-11-24 23:53:19,868 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2023-11-24 23:53:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-24 23:53:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-24 23:53:20,449 INFO L241 CfgBuilder]: Building ICFG [2023-11-24 23:53:20,453 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-24 23:53:25,304 INFO L282 CfgBuilder]: Performing block encoding [2023-11-24 23:53:26,142 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-24 23:53:26,142 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-24 23:53:26,145 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:53:26 BoogieIcfgContainer [2023-11-24 23:53:26,145 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-24 23:53:26,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-24 23:53:26,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-24 23:53:26,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-24 23:53:26,159 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 11:53:15" (1/3) ... [2023-11-24 23:53:26,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7240b724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:53:26, skipping insertion in model container [2023-11-24 23:53:26,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 11:53:19" (2/3) ... [2023-11-24 23:53:26,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7240b724 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 11:53:26, skipping insertion in model container [2023-11-24 23:53:26,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 11:53:26" (3/3) ... [2023-11-24 23:53:26,167 INFO L112 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-rc-imon--32_7a--a9e7fb5.i [2023-11-24 23:53:26,194 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-24 23:53:26,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2023-11-24 23:53:26,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-24 23:53:26,312 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;@1e1eba1c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-24 23:53:26,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-11-24 23:53:26,323 INFO L276 IsEmpty]: Start isEmpty. Operand has 680 states, 396 states have (on average 1.3055555555555556) internal successors, (517), 428 states have internal predecessors, (517), 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) [2023-11-24 23:53:26,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-24 23:53:26,338 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:26,339 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] [2023-11-24 23:53:26,340 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)] === [2023-11-24 23:53:26,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:26,355 INFO L85 PathProgramCache]: Analyzing trace with hash -462639680, now seen corresponding path program 1 times [2023-11-24 23:53:26,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:26,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620268326] [2023-11-24 23:53:26,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:26,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:27,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-24 23:53:27,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620268326] [2023-11-24 23:53:27,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620268326] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:27,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:27,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-24 23:53:27,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048815315] [2023-11-24 23:53:27,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:27,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:27,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:27,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:27,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:27,744 INFO L87 Difference]: Start difference. First operand has 680 states, 396 states have (on average 1.3055555555555556) internal successors, (517), 428 states have internal predecessors, (517), 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) [2023-11-24 23:53:29,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:29,794 INFO L93 Difference]: Finished difference Result 1372 states and 1932 transitions. [2023-11-24 23:53:29,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:29,797 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 [2023-11-24 23:53:29,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:29,822 INFO L225 Difference]: With dead ends: 1372 [2023-11-24 23:53:29,823 INFO L226 Difference]: Without dead ends: 684 [2023-11-24 23:53:29,838 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 [2023-11-24 23:53:29,843 INFO L413 NwaCegarLoop]: 831 mSDtfsCounter, 251 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 373 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:29,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [373 Valid, 1324 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-24 23:53:29,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2023-11-24 23:53:29,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 684. [2023-11-24 23:53:29,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 684 states, 407 states have (on average 1.2825552825552826) internal successors, (522), 429 states have internal predecessors, (522), 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) [2023-11-24 23:53:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 942 transitions. [2023-11-24 23:53:30,008 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 942 transitions. Word has length 34 [2023-11-24 23:53:30,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:30,010 INFO L495 AbstractCegarLoop]: Abstraction has 684 states and 942 transitions. [2023-11-24 23:53:30,011 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) [2023-11-24 23:53:30,011 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 942 transitions. [2023-11-24 23:53:30,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-24 23:53:30,019 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:30,020 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] [2023-11-24 23:53:30,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-24 23:53:30,021 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)] === [2023-11-24 23:53:30,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:30,022 INFO L85 PathProgramCache]: Analyzing trace with hash -970518378, now seen corresponding path program 1 times [2023-11-24 23:53:30,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:30,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761462784] [2023-11-24 23:53:30,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:30,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:30,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 23:53:30,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:30,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761462784] [2023-11-24 23:53:30,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761462784] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:30,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-24 23:53:30,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-24 23:53:30,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480906768] [2023-11-24 23:53:30,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:30,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-24 23:53:30,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:30,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-24 23:53:30,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-24 23:53:30,938 INFO L87 Difference]: Start difference. First operand 684 states and 942 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) [2023-11-24 23:53:32,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:32,946 INFO L93 Difference]: Finished difference Result 726 states and 1008 transitions. [2023-11-24 23:53:32,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-24 23:53:32,947 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 [2023-11-24 23:53:32,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:32,957 INFO L225 Difference]: With dead ends: 726 [2023-11-24 23:53:32,957 INFO L226 Difference]: Without dead ends: 724 [2023-11-24 23:53:32,958 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 [2023-11-24 23:53:32,960 INFO L413 NwaCegarLoop]: 841 mSDtfsCounter, 36 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:32,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1655 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 23:53:32,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2023-11-24 23:53:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 699. [2023-11-24 23:53:33,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 418 states have (on average 1.2870813397129186) internal successors, (538), 440 states have internal predecessors, (538), 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) [2023-11-24 23:53:33,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 966 transitions. [2023-11-24 23:53:33,033 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 966 transitions. Word has length 92 [2023-11-24 23:53:33,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:33,034 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 966 transitions. [2023-11-24 23:53:33,035 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) [2023-11-24 23:53:33,035 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 966 transitions. [2023-11-24 23:53:33,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-24 23:53:33,040 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:33,040 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] [2023-11-24 23:53:33,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-24 23:53:33,041 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)] === [2023-11-24 23:53:33,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:33,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1633918012, now seen corresponding path program 1 times [2023-11-24 23:53:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:33,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637948486] [2023-11-24 23:53:33,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:33,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:33,880 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 23:53:33,880 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637948486] [2023-11-24 23:53:33,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637948486] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:33,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410430179] [2023-11-24 23:53:33,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:33,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:33,882 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:33,887 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:33,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-24 23:53:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:35,191 INFO L262 TraceCheckSpWp]: Trace formula consists of 3609 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:53:35,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:35,336 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 23:53:35,336 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-24 23:53:35,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410430179] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-24 23:53:35,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-24 23:53:35,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-24 23:53:35,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014600491] [2023-11-24 23:53:35,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-24 23:53:35,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-24 23:53:35,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-24 23:53:35,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-24 23:53:35,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-24 23:53:35,352 INFO L87 Difference]: Start difference. First operand 699 states and 966 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) [2023-11-24 23:53:37,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-24 23:53:37,277 INFO L93 Difference]: Finished difference Result 724 states and 1006 transitions. [2023-11-24 23:53:37,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-24 23:53:37,279 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 [2023-11-24 23:53:37,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-24 23:53:37,288 INFO L225 Difference]: With dead ends: 724 [2023-11-24 23:53:37,288 INFO L226 Difference]: Without dead ends: 723 [2023-11-24 23:53:37,289 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 [2023-11-24 23:53:37,291 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 83 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-24 23:53:37,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1662 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-24 23:53:37,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2023-11-24 23:53:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 698. [2023-11-24 23:53:37,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 418 states have (on average 1.284688995215311) internal successors, (537), 439 states have internal predecessors, (537), 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) [2023-11-24 23:53:37,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 965 transitions. [2023-11-24 23:53:37,348 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 965 transitions. Word has length 97 [2023-11-24 23:53:37,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-24 23:53:37,350 INFO L495 AbstractCegarLoop]: Abstraction has 698 states and 965 transitions. [2023-11-24 23:53:37,350 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) [2023-11-24 23:53:37,350 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 965 transitions. [2023-11-24 23:53:37,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-24 23:53:37,354 INFO L187 NwaCegarLoop]: Found error trace [2023-11-24 23:53:37,354 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] [2023-11-24 23:53:37,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-24 23:53:37,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:37,585 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)] === [2023-11-24 23:53:37,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-24 23:53:37,586 INFO L85 PathProgramCache]: Analyzing trace with hash -888148785, now seen corresponding path program 1 times [2023-11-24 23:53:37,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-24 23:53:37,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285058833] [2023-11-24 23:53:37,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:37,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-24 23:53:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:38,266 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 23:53:38,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-24 23:53:38,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285058833] [2023-11-24 23:53:38,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285058833] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-24 23:53:38,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146518160] [2023-11-24 23:53:38,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-24 23:53:38,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-24 23:53:38,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 [2023-11-24 23:53:38,269 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-24 23:53:38,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f8a4ff8-85c5-490d-a6c8-f87529188425/bin/utaipan-verify-SwPr7d2a91/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-24 23:53:39,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-24 23:53:39,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 3610 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-24 23:53:39,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-24 23:53:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 23:53:39,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-24 23:53:39,855 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-24 23:53:39,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146518160] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-24 23:53:39,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [287035541] [2023-11-24 23:53:39,893 INFO L159 IcfgInterpreter]: Started Sifa with 78 locations of interest [2023-11-24 23:53:39,893 INFO L166 IcfgInterpreter]: Building call graph [2023-11-24 23:53:39,898 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-11-24 23:53:39,906 INFO L176 IcfgInterpreter]: Starting interpretation [2023-11-24 23:53:39,906 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs