./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pg.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 86380eb8807c8834472c3c5bc5f358e156df083f7e4b141cf7faa18b94c9fafb --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:38:26,800 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:38:26,880 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:38:26,886 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:38:26,887 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:38:26,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:38:26,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:38:26,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:38:26,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:38:26,913 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:38:26,914 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:38:26,914 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:38:26,915 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:38:26,915 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:38:26,916 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:38:26,916 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:38:26,917 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:38:26,917 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:38:26,918 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:38:26,919 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:38:26,919 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:38:26,920 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:38:26,921 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:38:26,921 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:38:26,922 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:38:26,922 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:38:26,922 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:38:26,923 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:38:26,923 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:38:26,924 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:38:26,924 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:38:26,924 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:38:26,925 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:38:26,925 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:38:26,925 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:38:26,925 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:38:26,926 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:38:26,926 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:38:26,926 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:38:26,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:38:26,926 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:38:26,926 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:38:26,927 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:38:26,927 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:38:26,927 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_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 86380eb8807c8834472c3c5bc5f358e156df083f7e4b141cf7faa18b94c9fafb [2023-12-02 13:38:27,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:38:27,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:38:27,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:38:27,185 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:38:27,186 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:38:27,187 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pg.ko-entry_point.cil.out.i [2023-12-02 13:38:29,968 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:38:30,344 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:38:30,345 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pg.ko-entry_point.cil.out.i [2023-12-02 13:38:30,372 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/data/20ede4afe/a4a7382524964c159b0ee6310796e1c1/FLAG61484c8f4 [2023-12-02 13:38:30,387 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/data/20ede4afe/a4a7382524964c159b0ee6310796e1c1 [2023-12-02 13:38:30,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:38:30,391 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:38:30,392 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:38:30,392 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:38:30,398 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:38:30,398 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:30" (1/1) ... [2023-12-02 13:38:30,400 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c97765d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:30, skipping insertion in model container [2023-12-02 13:38:30,400 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:38:30" (1/1) ... [2023-12-02 13:38:30,493 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:38:30,907 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3070] [2023-12-02 13:38:30,908 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3071-3072] [2023-12-02 13:38:31,013 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pg.ko-entry_point.cil.out.i[91143,91156] [2023-12-02 13:38:31,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:38:31,347 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:38:31,432 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3070] [2023-12-02 13:38:31,433 WARN L1274 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3071-3072] [2023-12-02 13:38:31,436 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; btr %1,%0": "+m" (*((long volatile *)addr)): "Ir" (nr)); [3152] [2023-12-02 13:38:31,438 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile (".pushsection .smp_locks,\"a\"\n.balign 4\n.long 671f - .\n.popsection\n671:\n\tlock; bts %2, %0; setc %1": "+m" (*addr), "=qm" (c): "Ir" (nr): "memory"); [3160-3161] [2023-12-02 13:38:31,446 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pg.ko-entry_point.cil.out.i[91143,91156] [2023-12-02 13:38:31,528 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:38:31,561 WARN L675 CHandler]: The function memcmp is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:38:31,570 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:38:31,571 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31 WrapperNode [2023-12-02 13:38:31,571 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:38:31,572 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:38:31,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:38:31,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:38:31,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,618 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,685 INFO L138 Inliner]: procedures = 111, calls = 523, calls flagged for inlining = 42, calls inlined = 40, statements flattened = 1301 [2023-12-02 13:38:31,686 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:38:31,687 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:38:31,687 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:38:31,687 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:38:31,697 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,697 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,713 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,771 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,781 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,791 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,827 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:38:31,828 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:38:31,828 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:38:31,828 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:38:31,829 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (1/1) ... [2023-12-02 13:38:31,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:38:31,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:38:31,862 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:38:31,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:38:31,903 INFO L130 BoogieDeclarations]: Found specification of procedure pi_release [2023-12-02 13:38:31,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_release [2023-12-02 13:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2023-12-02 13:38:31,904 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2023-12-02 13:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure pi_disconnect [2023-12-02 13:38:31,904 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_disconnect [2023-12-02 13:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure status_reg [2023-12-02 13:38:31,904 INFO L138 BoogieDeclarations]: Found implementation of procedure status_reg [2023-12-02 13:38:31,904 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2023-12-02 13:38:31,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2023-12-02 13:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 13:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure read_reg [2023-12-02 13:38:31,905 INFO L138 BoogieDeclarations]: Found implementation of procedure read_reg [2023-12-02 13:38:31,905 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-12-02 13:38:31,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-12-02 13:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure pg_sleep [2023-12-02 13:38:31,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_sleep [2023-12-02 13:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure pg_completion [2023-12-02 13:38:31,906 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_completion [2023-12-02 13:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:38:31,906 INFO L130 BoogieDeclarations]: Found specification of procedure copy_to_user [2023-12-02 13:38:31,906 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_to_user [2023-12-02 13:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure pg_wait [2023-12-02 13:38:31,907 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_wait [2023-12-02 13:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-12-02 13:38:31,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-12-02 13:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-12-02 13:38:31,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-12-02 13:38:31,907 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2023-12-02 13:38:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2023-12-02 13:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-02 13:38:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-02 13:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 13:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2023-12-02 13:38:31,908 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2023-12-02 13:38:31,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 13:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure DRIVE [2023-12-02 13:38:31,909 INFO L138 BoogieDeclarations]: Found implementation of procedure DRIVE [2023-12-02 13:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure pg_write [2023-12-02 13:38:31,909 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_write [2023-12-02 13:38:31,909 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2023-12-02 13:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_to_user [2023-12-02 13:38:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_to_user [2023-12-02 13:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 13:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_unregister_chrdev_20 [2023-12-02 13:38:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_unregister_chrdev_20 [2023-12-02 13:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure pg_reset [2023-12-02 13:38:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_reset [2023-12-02 13:38:31,910 INFO L130 BoogieDeclarations]: Found specification of procedure pg_identify [2023-12-02 13:38:31,910 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_identify [2023-12-02 13:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure pi_write_block [2023-12-02 13:38:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_write_block [2023-12-02 13:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-12-02 13:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure pi_init [2023-12-02 13:38:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_init [2023-12-02 13:38:31,911 INFO L130 BoogieDeclarations]: Found specification of procedure pi_read_regr [2023-12-02 13:38:31,911 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_read_regr [2023-12-02 13:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2023-12-02 13:38:31,912 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2023-12-02 13:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-12-02 13:38:31,912 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-12-02 13:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure pg_probe [2023-12-02 13:38:31,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_probe [2023-12-02 13:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure pi_connect [2023-12-02 13:38:31,912 INFO L138 BoogieDeclarations]: Found implementation of procedure pi_connect [2023-12-02 13:38:31,912 INFO L130 BoogieDeclarations]: Found specification of procedure pg_command [2023-12-02 13:38:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure pg_command [2023-12-02 13:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2023-12-02 13:38:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2023-12-02 13:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2023-12-02 13:38:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2023-12-02 13:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:38:31,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:38:31,913 INFO L130 BoogieDeclarations]: Found specification of procedure xs [2023-12-02 13:38:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure xs [2023-12-02 13:38:31,914 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2023-12-02 13:38:31,914 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2023-12-02 13:38:32,215 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:38:32,218 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:38:32,634 INFO L775 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2023-12-02 13:38:33,899 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:38:34,295 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:38:34,295 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:38:34,297 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:38:34 BoogieIcfgContainer [2023-12-02 13:38:34,298 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:38:34,300 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:38:34,300 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:38:34,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:38:34,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:38:30" (1/3) ... [2023-12-02 13:38:34,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b6dc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:38:34, skipping insertion in model container [2023-12-02 13:38:34,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:38:31" (2/3) ... [2023-12-02 13:38:34,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47b6dc41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:38:34, skipping insertion in model container [2023-12-02 13:38:34,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:38:34" (3/3) ... [2023-12-02 13:38:34,306 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--block--paride--pg.ko-entry_point.cil.out.i [2023-12-02 13:38:34,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:38:34,323 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:38:34,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:38:34,383 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;@70a00055, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:38:34,383 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:38:34,389 INFO L276 IsEmpty]: Start isEmpty. Operand has 412 states, 264 states have (on average 1.375) internal successors, (363), 272 states have internal predecessors, (363), 113 states have call successors, (113), 34 states have call predecessors, (113), 33 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) [2023-12-02 13:38:34,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-12-02 13:38:34,414 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:34,414 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:34,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:38:34,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:34,420 INFO L85 PathProgramCache]: Analyzing trace with hash 77169073, now seen corresponding path program 1 times [2023-12-02 13:38:34,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:38:34,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959669875] [2023-12-02 13:38:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:34,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:38:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:34,972 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-02 13:38:34,973 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:38:34,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959669875] [2023-12-02 13:38:34,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959669875] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:34,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:34,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:38:34,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113363279] [2023-12-02 13:38:34,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:34,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:34,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:38:35,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:35,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:38:35,017 INFO L87 Difference]: Start difference. First operand has 412 states, 264 states have (on average 1.375) internal successors, (363), 272 states have internal predecessors, (363), 113 states have call successors, (113), 34 states have call predecessors, (113), 33 states have return successors, (110), 110 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:38:35,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:35,489 INFO L93 Difference]: Finished difference Result 1067 states and 1506 transitions. [2023-12-02 13:38:35,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:35,492 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 84 [2023-12-02 13:38:35,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:35,510 INFO L225 Difference]: With dead ends: 1067 [2023-12-02 13:38:35,510 INFO L226 Difference]: Without dead ends: 642 [2023-12-02 13:38:35,518 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 [2023-12-02 13:38:35,522 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 364 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 364 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:35,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [364 Valid, 1043 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:38:35,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2023-12-02 13:38:35,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 642. [2023-12-02 13:38:35,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 410 states have (on average 1.329268292682927) internal successors, (545), 415 states have internal predecessors, (545), 175 states have call successors, (175), 57 states have call predecessors, (175), 56 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-02 13:38:35,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 894 transitions. [2023-12-02 13:38:35,630 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 894 transitions. Word has length 84 [2023-12-02 13:38:35,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:35,631 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 894 transitions. [2023-12-02 13:38:35,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (14), 2 states have call predecessors, (14), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-12-02 13:38:35,631 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 894 transitions. [2023-12-02 13:38:35,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-12-02 13:38:35,640 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:35,640 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:35,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:38:35,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:38:35,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:35,641 INFO L85 PathProgramCache]: Analyzing trace with hash -576765991, now seen corresponding path program 1 times [2023-12-02 13:38:35,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:38:35,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031808134] [2023-12-02 13:38:35,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:35,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:38:35,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:35,992 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-02 13:38:35,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:38:35,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031808134] [2023-12-02 13:38:35,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031808134] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:35,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:38:35,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:38:35,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497964554] [2023-12-02 13:38:35,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:35,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:35,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:38:35,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:35,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:38:35,996 INFO L87 Difference]: Start difference. First operand 642 states and 894 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 13:38:36,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:36,287 INFO L93 Difference]: Finished difference Result 1267 states and 1772 transitions. [2023-12-02 13:38:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:36,287 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 122 [2023-12-02 13:38:36,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:36,293 INFO L225 Difference]: With dead ends: 1267 [2023-12-02 13:38:36,293 INFO L226 Difference]: Without dead ends: 650 [2023-12-02 13:38:36,295 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 [2023-12-02 13:38:36,297 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 3 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:36,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 985 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:38:36,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2023-12-02 13:38:36,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 644. [2023-12-02 13:38:36,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 644 states, 412 states have (on average 1.3276699029126213) internal successors, (547), 417 states have internal predecessors, (547), 175 states have call successors, (175), 57 states have call predecessors, (175), 56 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-02 13:38:36,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 896 transitions. [2023-12-02 13:38:36,369 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 896 transitions. Word has length 122 [2023-12-02 13:38:36,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:36,369 INFO L495 AbstractCegarLoop]: Abstraction has 644 states and 896 transitions. [2023-12-02 13:38:36,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2023-12-02 13:38:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 896 transitions. [2023-12-02 13:38:36,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-12-02 13:38:36,374 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:36,374 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:36,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:38:36,375 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:38:36,375 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:36,375 INFO L85 PathProgramCache]: Analyzing trace with hash -191837757, now seen corresponding path program 1 times [2023-12-02 13:38:36,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:38:36,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375649236] [2023-12-02 13:38:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:36,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:38:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:36,793 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-12-02 13:38:36,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:38:36,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375649236] [2023-12-02 13:38:36,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375649236] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:38:36,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246760968] [2023-12-02 13:38:36,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:36,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:38:36,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:38:36,798 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:38:36,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-02 13:38:37,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:37,446 INFO L262 TraceCheckSpWp]: Trace formula consists of 1596 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:38:37,460 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-12-02 13:38:37,495 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:37,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246760968] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:37,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:38:37,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-02 13:38:37,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626300881] [2023-12-02 13:38:37,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:37,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:37,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:38:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:37,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:38:37,499 INFO L87 Difference]: Start difference. First operand 644 states and 896 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 13:38:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:37,830 INFO L93 Difference]: Finished difference Result 1285 states and 1798 transitions. [2023-12-02 13:38:37,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:37,830 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 128 [2023-12-02 13:38:37,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:37,836 INFO L225 Difference]: With dead ends: 1285 [2023-12-02 13:38:37,836 INFO L226 Difference]: Without dead ends: 666 [2023-12-02 13:38:37,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:38:37,841 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 10 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:37,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 993 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:38:37,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2023-12-02 13:38:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 646. [2023-12-02 13:38:37,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 646 states, 414 states have (on average 1.326086956521739) internal successors, (549), 419 states have internal predecessors, (549), 175 states have call successors, (175), 57 states have call predecessors, (175), 56 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-02 13:38:37,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 646 states to 646 states and 898 transitions. [2023-12-02 13:38:37,877 INFO L78 Accepts]: Start accepts. Automaton has 646 states and 898 transitions. Word has length 128 [2023-12-02 13:38:37,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:37,878 INFO L495 AbstractCegarLoop]: Abstraction has 646 states and 898 transitions. [2023-12-02 13:38:37,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 13:38:37,878 INFO L276 IsEmpty]: Start isEmpty. Operand 646 states and 898 transitions. [2023-12-02 13:38:37,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-12-02 13:38:37,883 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:37,883 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:37,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-02 13:38:38,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:38:38,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:38:38,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:38,084 INFO L85 PathProgramCache]: Analyzing trace with hash -776656821, now seen corresponding path program 1 times [2023-12-02 13:38:38,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:38:38,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963682725] [2023-12-02 13:38:38,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:38,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:38:38,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:38,452 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-12-02 13:38:38,453 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:38:38,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963682725] [2023-12-02 13:38:38,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963682725] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:38:38,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810707396] [2023-12-02 13:38:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:38,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:38:38,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:38:38,455 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:38:38,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-02 13:38:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:39,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 1611 conjuncts, 2 conjunts are in the unsatisfiable core [2023-12-02 13:38:39,020 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:39,041 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 13:38:39,042 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:39,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810707396] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:39,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:38:39,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-02 13:38:39,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203685958] [2023-12-02 13:38:39,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:39,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:39,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:38:39,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:39,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:38:39,045 INFO L87 Difference]: Start difference. First operand 646 states and 898 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 13:38:39,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:39,351 INFO L93 Difference]: Finished difference Result 1277 states and 1782 transitions. [2023-12-02 13:38:39,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:39,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 131 [2023-12-02 13:38:39,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:39,357 INFO L225 Difference]: With dead ends: 1277 [2023-12-02 13:38:39,357 INFO L226 Difference]: Without dead ends: 656 [2023-12-02 13:38:39,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:38:39,361 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 8 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 977 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:39,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 977 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-02 13:38:39,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-12-02 13:38:39,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 648. [2023-12-02 13:38:39,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 416 states have (on average 1.3245192307692308) internal successors, (551), 421 states have internal predecessors, (551), 175 states have call successors, (175), 57 states have call predecessors, (175), 56 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2023-12-02 13:38:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 900 transitions. [2023-12-02 13:38:39,413 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 900 transitions. Word has length 131 [2023-12-02 13:38:39,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:39,414 INFO L495 AbstractCegarLoop]: Abstraction has 648 states and 900 transitions. [2023-12-02 13:38:39,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 13:38:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 900 transitions. [2023-12-02 13:38:39,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-12-02 13:38:39,420 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:39,420 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:39,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-12-02 13:38:39,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:38:39,626 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:38:39,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1210448501, now seen corresponding path program 1 times [2023-12-02 13:38:39,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:38:39,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647610050] [2023-12-02 13:38:39,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:39,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:38:39,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-12-02 13:38:39,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:38:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647610050] [2023-12-02 13:38:39,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647610050] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:38:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972061552] [2023-12-02 13:38:39,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:39,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:38:39,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:38:39,946 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:38:39,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-02 13:38:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:40,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 1622 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:38:40,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:40,568 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-12-02 13:38:40,568 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:38:40,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972061552] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:38:40,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-02 13:38:40,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-12-02 13:38:40,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063818488] [2023-12-02 13:38:40,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:38:40,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:38:40,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:38:40,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:38:40,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:38:40,571 INFO L87 Difference]: Start difference. First operand 648 states and 900 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 13:38:40,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:38:40,847 INFO L93 Difference]: Finished difference Result 1297 states and 1812 transitions. [2023-12-02 13:38:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:38:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 134 [2023-12-02 13:38:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:38:40,853 INFO L225 Difference]: With dead ends: 1297 [2023-12-02 13:38:40,854 INFO L226 Difference]: Without dead ends: 674 [2023-12-02 13:38:40,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:38:40,858 INFO L413 NwaCegarLoop]: 491 mSDtfsCounter, 16 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:38:40,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 965 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:38:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2023-12-02 13:38:40,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 672. [2023-12-02 13:38:40,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 434 states have (on average 1.3294930875576036) internal successors, (577), 439 states have internal predecessors, (577), 181 states have call successors, (181), 57 states have call predecessors, (181), 56 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2023-12-02 13:38:40,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 938 transitions. [2023-12-02 13:38:40,898 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 938 transitions. Word has length 134 [2023-12-02 13:38:40,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:38:40,899 INFO L495 AbstractCegarLoop]: Abstraction has 672 states and 938 transitions. [2023-12-02 13:38:40,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2023-12-02 13:38:40,899 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 938 transitions. [2023-12-02 13:38:40,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-12-02 13:38:40,903 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:38:40,904 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:38:40,913 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-12-02 13:38:41,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:38:41,105 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:38:41,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:38:41,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1856914685, now seen corresponding path program 1 times [2023-12-02 13:38:41,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:38:41,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134844266] [2023-12-02 13:38:41,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:41,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:38:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-02 13:38:41,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:38:41,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134844266] [2023-12-02 13:38:41,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134844266] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:38:41,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1024102895] [2023-12-02 13:38:41,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:38:41,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:38:41,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:38:41,472 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:38:41,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:38:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:38:42,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 1643 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:38:42,083 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:38:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-12-02 13:38:42,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:38:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-12-02 13:38:42,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1024102895] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:38:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2001346856] [2023-12-02 13:38:42,262 INFO L159 IcfgInterpreter]: Started Sifa with 110 locations of interest [2023-12-02 13:38:42,262 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:38:42,266 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:38:42,272 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:38:42,273 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:39:33,668 INFO L197 IcfgInterpreter]: Interpreting procedure clear_bit with input of size 313 for LOIs [2023-12-02 13:39:33,910 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 805 for LOIs [2023-12-02 13:39:39,311 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 88 for LOIs [2023-12-02 13:39:39,325 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:39:44,394 WARN L293 SmtUtils]: Spent 5.01s on a formula simplification that was a NOOP. DAG size: 790 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:40:01,506 WARN L293 SmtUtils]: Spent 6.24s on a formula simplification that was a NOOP. DAG size: 995 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:40:08,389 WARN L293 SmtUtils]: Spent 6.57s on a formula simplification that was a NOOP. DAG size: 1011 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:40:15,619 WARN L876 $PredicateComparison]: unable to prove that (or (let ((.cse2 (+ |c_ULTIMATE.start_pg_init_units_~dev~0#1.offset| 200)) (.cse3 (+ 176 |c_ULTIMATE.start_pg_init_units_~dev~0#1.offset|)) (.cse5 (+ 212 |c_ULTIMATE.start_pg_init_units_~dev~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_pg_init_units_~dev~0#1.offset| 216))) (and (exists ((|v_#memory_$Pointer$.offset_108| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_109| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_395| (Array Int (Array Int Int)))) (let ((.cse4 (select |v_#memory_$Pointer$.offset_109| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|)) (.cse0 (select |v_#memory_$Pointer$.offset_108| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|))) (and (= (store |v_#memory_$Pointer$.offset_108| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (store .cse0 .cse1 0) .cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse2))) |c_#memory_$Pointer$.offset|) (= (store |v_#memory_$Pointer$.offset_395| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (select |v_#memory_$Pointer$.offset_395| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse3 (select .cse4 .cse3))) |v_#memory_$Pointer$.offset_109|) (= |v_#memory_$Pointer$.offset_108| (store |v_#memory_$Pointer$.offset_109| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store .cse4 .cse5 (select .cse0 .cse5))))))) (exists ((|v_#memory_$Pointer$.base_109| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_108| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_395| (Array Int (Array Int Int)))) (let ((.cse6 (select |v_#memory_$Pointer$.base_108| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|)) (.cse7 (select |v_#memory_$Pointer$.base_109| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|))) (and (= (store |v_#memory_$Pointer$.base_108| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store .cse6 .cse5 (select .cse7 .cse5))) |v_#memory_$Pointer$.base_109|) (= (store |v_#memory_$Pointer$.base_395| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (select |v_#memory_$Pointer$.base_395| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse3 (select .cse6 .cse3))) |v_#memory_$Pointer$.base_108|) (= (store |v_#memory_$Pointer$.base_109| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (store .cse7 .cse1 0) .cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse2))) |c_#memory_$Pointer$.base|)))) (exists ((|v_#memory_int_335| (Array Int (Array Int Int))) (|v_#memory_int_117| (Array Int (Array Int Int)))) (let ((.cse8 (select |v_#memory_int_117| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|))) (and (= |c_#memory_int| (store |v_#memory_int_117| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store .cse8 .cse2 (select (select |v_#memory_int_117| |c_ULTIMATE.start_pg_init_units_~parm~0#1.base|) (+ 16 |c_ULTIMATE.start_pg_init_units_~parm~0#1.offset|))))) (= (store |v_#memory_int_335| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (store (store (select |v_#memory_int_335| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse3 0) .cse5 0) .cse1 (select .cse8 .cse1))) |v_#memory_int_117|)))))) (and (<= |c_ULTIMATE.start_main_~ldvarg1~0#1| 9223372036854775807) (<= 0 (+ |c_ULTIMATE.start_main_~ldvarg6~0#1| 2147483648)) (= 40 |c_~#pg_mutex~0.base|) (= c_~LDV_IN_INTERRUPT~0 1) (= |c_~#pg_fops~0.offset| 0) (= |c_~#drive1~0.base| 36) (= |c_~#pg_mutex~0.offset| 0) (not (= |c_ULTIMATE.start_pg_init_~#__key~0#1.base| 0)) (= |c_ULTIMATE.start_main_~ldvarg5~0#1.offset| 0) (= |c_ULTIMATE.start_main_~tmp___6~0#1.offset| 0) (= |c_ULTIMATE.start_main_~tmp___2~8#1.base| 0) (= 0 |c_ULTIMATE.start_main_~ldvarg2~0#1.base|) (= |c_ULTIMATE.start_pg_init_units_~unit~0#1| 0) (= 97 c_~major~0) (<= 0 (+ |c_ULTIMATE.start_main_~ldvarg1~0#1| 9223372036854775808)) (= c_~pg_class~0.base 0) (= 3 c_~name~0.base) (= |c_ULTIMATE.start_main_~tmp~22#1.base| 0) (= |c_ULTIMATE.start_main_~tmp___6~0#1.base| 0) (= c_~name~0.offset 0) (= c_~ldv_state_variable_0~0 1) (= 41 |c_~#devices~0.base|) |c_ULTIMATE.start_main_#t~switch287#1| (<= 1 |c_#StackHeapBarrier|) (= c_~pg_class~0.offset 0) (= c_~disable~0 0) (= |c_~#drive1~0.offset| 0) (= c_~ldv_state_variable_1~0 0) (= |c_~#pg_fops~0.base| 43) (<= |c_ULTIMATE.start_main_~ldvarg0~0#1| 2147483647) (= |c_~#drive2~0.base| 37) (= |c_ULTIMATE.start_main_~ldvarg7~0#1.base| 0) (= |c_~#devices~0.offset| 0) (exists ((|v_#valid_176| (Array Int Int))) (and (= |c_#valid| (store |v_#valid_176| |c_ULTIMATE.start_pg_init_~#__key~0#1.base| 1)) (= (select |v_#valid_176| |c_ULTIMATE.start_pg_init_~#__key~0#1.base|) 0))) (= c_~pg_fops_group1~0.offset 0) (= 35 |c_~#drive0~0.base|) (= c_~pg_fops_group1~0.base 0) (= c_~verbose~0 0) (<= 0 (+ |c_ULTIMATE.start_main_~ldvarg0~0#1| 2147483648)) (<= 0 (+ |c_ULTIMATE.start_main_~tmp___4~0#1| 9223372036854775808)) (<= |c_ULTIMATE.start_main_~tmp___1~12#1| 2147483647) (= |c_ULTIMATE.start_main_~tmp___5~0#1.base| 0) (= |c_ULTIMATE.start_main_~tmp___9~0#1| 1) (<= 0 (+ 2147483648 |c_ULTIMATE.start_main_~ldvarg3~0#1|)) (exists ((|v_#length_81| (Array Int Int))) (= (store |v_#length_81| |c_ULTIMATE.start_pg_init_~#__key~0#1.base| 8) |c_#length|)) (= |c_ULTIMATE.start_main_~ldvarg7~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~ldvarg3~0#1| 2147483647) (= 42 |c_~#pg_scratch~0.base|) (<= |c_ULTIMATE.start_main_~tmp___4~0#1| 9223372036854775807) (= |c_ULTIMATE.start_main_~tmp___7~0#1| 1) (<= 0 (+ |c_ULTIMATE.start_main_~tmp___0~15#1| 2147483648)) (= c_~pg_drive_count~0 0) (= |c_ULTIMATE.start_main_~tmp~22#1.offset| 0) (= 0 c_~ldv_spin~0) (= c_~pg_fops_group2~0.base 0) (= |c_~#drive2~0.offset| 0) (<= 0 (+ |c_ULTIMATE.start_main_~tmp___3~0#1| 2147483648)) (= |c_ULTIMATE.start_pg_init_~#__key~0#1.offset| 0) (<= 0 (+ |c_ULTIMATE.start_main_~tmp___1~12#1| 2147483648)) (= c_~ref_cnt~0 0) (= |c_~#drives~0.offset| 0) (<= |c_ULTIMATE.start_main_~tmp___3~0#1| 2147483647) (= c_~pg_fops_group2~0.offset 0) (= |c_ULTIMATE.start_main_~ldvarg5~0#1.base| 0) (= |c_~#drive3~0.base| 38) (= |c_ULTIMATE.start_main_~tmp___2~8#1.offset| 0) (= |c_ULTIMATE.start_main_~ldvarg2~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~ldvarg6~0#1| 2147483647) (= c_~ldv_retval_1~0 0) (= |c_ULTIMATE.start_main_~ldvarg4~0#1.offset| 0) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_pg_init_~#__key~0#1.base|) (= |c_ULTIMATE.start_main_~tmp___5~0#1.offset| 0) (= c_~ldv_retval_0~0 0) |c_ULTIMATE.start_main_#t~switch277#1| (= |c_~#drive3~0.offset| 0) (<= |c_ULTIMATE.start_main_~tmp___0~15#1| 2147483647) (= |c_~#drives~0.base| 39) (= |c_~#pg_scratch~0.offset| 0) (= |c_ULTIMATE.start_main_~ldvarg4~0#1.base| 0) (= 0 |c_~#drive0~0.offset|))) is different from true [2023-12-02 13:40:41,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSifa [2001346856] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:40:41,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2023-12-02 13:40:41,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [4, 4, 4] total 44 [2023-12-02 13:40:41,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275873348] [2023-12-02 13:40:41,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:40:41,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-12-02 13:40:41,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:40:41,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-12-02 13:40:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1675, Unknown=2, NotChecked=82, Total=1892 [2023-12-02 13:40:41,893 INFO L87 Difference]: Start difference. First operand 672 states and 938 transitions. Second operand has 39 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-02 13:40:55,416 WARN L293 SmtUtils]: Spent 5.26s on a formula simplification that was a NOOP. DAG size: 801 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:40:57,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:40:59,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:41:05,214 WARN L293 SmtUtils]: Spent 5.24s on a formula simplification that was a NOOP. DAG size: 807 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:41:07,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:41:21,998 WARN L293 SmtUtils]: Spent 13.24s on a formula simplification. DAG size of input: 1177 DAG size of output: 1177 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:41:24,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:41:39,342 WARN L293 SmtUtils]: Spent 14.16s on a formula simplification. DAG size of input: 1193 DAG size of output: 1193 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:41:41,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:41:45,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:42:04,542 WARN L293 SmtUtils]: Spent 14.52s on a formula simplification. DAG size of input: 1203 DAG size of output: 1197 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:42:06,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:42:24,666 WARN L293 SmtUtils]: Spent 14.91s on a formula simplification. DAG size of input: 1221 DAG size of output: 1215 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:42:26,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:42:29,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:42:52,106 WARN L293 SmtUtils]: Spent 15.54s on a formula simplification. DAG size of input: 1244 DAG size of output: 1238 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:43:09,458 WARN L293 SmtUtils]: Spent 16.02s on a formula simplification. DAG size of input: 1248 DAG size of output: 1242 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:43:29,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:31,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:33,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:38,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:40,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:42,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:44,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:47,330 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:50,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:52,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:54,743 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:56,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:57,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:43:59,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:01,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:03,692 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:05,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:07,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:10,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:12,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:13,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:15,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:20,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:24,114 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:26,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:28,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:30,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:32,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:44:34,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:45:06,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:45:28,644 WARN L293 SmtUtils]: Spent 7.45s on a formula simplification. DAG size of input: 166 DAG size of output: 166 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:45:55,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:45:57,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:09,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:14,070 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:16,989 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:18,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:25,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:34,147 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:37,390 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:40,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:46:50,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:47:09,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:47:17,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:47:22,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:47:45,589 WARN L293 SmtUtils]: Spent 17.48s on a formula simplification. DAG size of input: 1258 DAG size of output: 1246 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:47:47,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:48:06,775 WARN L293 SmtUtils]: Spent 11.54s on a formula simplification. DAG size of input: 315 DAG size of output: 312 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:48:17,170 WARN L293 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 1039 DAG size of output: 1033 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:48:52,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:48:56,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:48:57,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:48:59,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:07,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:09,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:11,164 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:15,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:16,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:18,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:20,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:21,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:23,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:25,301 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:27,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:29,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:31,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:34,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:37,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:39,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:41,248 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:44,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:47,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:49,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:50,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:55,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:49:58,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:50:01,985 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:50:06,340 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:50:23,835 WARN L293 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 1066 DAG size of output: 1060 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:50:36,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-02 13:50:43,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:50:43,016 INFO L93 Difference]: Finished difference Result 1457 states and 2049 transitions. [2023-12-02 13:50:43,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-02 13:50:43,016 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 138 [2023-12-02 13:50:43,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:50:43,023 INFO L225 Difference]: With dead ends: 1457 [2023-12-02 13:50:43,023 INFO L226 Difference]: Without dead ends: 810 [2023-12-02 13:50:43,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 948 ImplicationChecksByTransitivity, 271.5s TimeCoverageRelationStatistics Valid=251, Invalid=3280, Unknown=13, NotChecked=116, Total=3660 [2023-12-02 13:50:43,028 INFO L413 NwaCegarLoop]: 498 mSDtfsCounter, 62 mSDsluCounter, 10813 mSDsCounter, 0 mSdLazyCounter, 4624 mSolverCounterSat, 32 mSolverCounterUnsat, 46 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 388.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 11311 SdHoareTripleChecker+Invalid, 5468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 4624 IncrementalHoareTripleChecker+Invalid, 46 IncrementalHoareTripleChecker+Unknown, 766 IncrementalHoareTripleChecker+Unchecked, 391.7s IncrementalHoareTripleChecker+Time [2023-12-02 13:50:43,028 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 11311 Invalid, 5468 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [32 Valid, 4624 Invalid, 46 Unknown, 766 Unchecked, 391.7s Time] [2023-12-02 13:50:43,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2023-12-02 13:50:43,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 762. [2023-12-02 13:50:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 762 states, 499 states have (on average 1.3266533066132264) internal successors, (662), 505 states have internal predecessors, (662), 200 states have call successors, (200), 62 states have call predecessors, (200), 62 states have return successors, (205), 199 states have call predecessors, (205), 199 states have call successors, (205) [2023-12-02 13:50:43,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 762 states to 762 states and 1067 transitions. [2023-12-02 13:50:43,108 INFO L78 Accepts]: Start accepts. Automaton has 762 states and 1067 transitions. Word has length 138 [2023-12-02 13:50:43,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:50:43,108 INFO L495 AbstractCegarLoop]: Abstraction has 762 states and 1067 transitions. [2023-12-02 13:50:43,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 30 states have (on average 2.7) internal successors, (81), 29 states have internal predecessors, (81), 8 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2023-12-02 13:50:43,109 INFO L276 IsEmpty]: Start isEmpty. Operand 762 states and 1067 transitions. [2023-12-02 13:50:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2023-12-02 13:50:43,113 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:50:43,113 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:50:43,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:50:43,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-12-02 13:50:43,314 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:50:43,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:50:43,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1657484910, now seen corresponding path program 1 times [2023-12-02 13:50:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:50:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983313679] [2023-12-02 13:50:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:50:43,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:50:43,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:50:43,542 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-02 13:50:43,542 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:50:43,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983313679] [2023-12-02 13:50:43,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983313679] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-02 13:50:43,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [545990449] [2023-12-02 13:50:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:50:43,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:50:43,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:50:43,544 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:50:43,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7b027ff9-22ce-490d-9e69-2e7f03deee3b/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-02 13:50:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:50:44,172 INFO L262 TraceCheckSpWp]: Trace formula consists of 1698 conjuncts, 3 conjunts are in the unsatisfiable core [2023-12-02 13:50:44,178 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:50:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 34 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-12-02 13:50:44,202 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:50:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-12-02 13:50:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [545990449] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:50:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [611154154] [2023-12-02 13:50:44,307 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2023-12-02 13:50:44,307 INFO L166 IcfgInterpreter]: Building call graph [2023-12-02 13:50:44,308 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2023-12-02 13:50:44,308 INFO L176 IcfgInterpreter]: Starting interpretation [2023-12-02 13:50:44,308 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2023-12-02 13:51:24,801 INFO L197 IcfgInterpreter]: Interpreting procedure clear_bit with input of size 313 for LOIs [2023-12-02 13:51:25,021 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 805 for LOIs [2023-12-02 13:51:30,628 INFO L197 IcfgInterpreter]: Interpreting procedure printk with input of size 15 for LOIs [2023-12-02 13:51:30,632 INFO L197 IcfgInterpreter]: Interpreting procedure pi_init with input of size 189 for LOIs [2023-12-02 13:51:30,853 INFO L180 IcfgInterpreter]: Interpretation finished [2023-12-02 13:51:36,296 WARN L293 SmtUtils]: Spent 5.38s on a formula simplification that was a NOOP. DAG size: 790 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:51:53,843 WARN L293 SmtUtils]: Spent 6.69s on a formula simplification that was a NOOP. DAG size: 995 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:52:01,206 WARN L293 SmtUtils]: Spent 7.02s on a formula simplification that was a NOOP. DAG size: 1011 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:52:09,002 WARN L876 $PredicateComparison]: unable to prove that (or (let ((.cse2 (+ |c_ULTIMATE.start_pg_init_units_~dev~0#1.offset| 200)) (.cse5 (+ 176 |c_ULTIMATE.start_pg_init_units_~dev~0#1.offset|)) (.cse4 (+ 212 |c_ULTIMATE.start_pg_init_units_~dev~0#1.offset|)) (.cse1 (+ |c_ULTIMATE.start_pg_init_units_~dev~0#1.offset| 216))) (and (exists ((|v_#memory_$Pointer$.offset_108| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_109| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.offset_452| (Array Int (Array Int Int)))) (let ((.cse0 (select |v_#memory_$Pointer$.offset_108| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|)) (.cse3 (select |v_#memory_$Pointer$.offset_109| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|))) (and (= (store |v_#memory_$Pointer$.offset_108| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (store .cse0 .cse1 0) .cse2 (select (select |c_#memory_$Pointer$.offset| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse2))) |c_#memory_$Pointer$.offset|) (= |v_#memory_$Pointer$.offset_108| (store |v_#memory_$Pointer$.offset_109| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store .cse3 .cse4 (select .cse0 .cse4)))) (= (store |v_#memory_$Pointer$.offset_452| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (select |v_#memory_$Pointer$.offset_452| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse5 (select .cse3 .cse5))) |v_#memory_$Pointer$.offset_109|)))) (exists ((|v_#memory_$Pointer$.base_109| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_108| (Array Int (Array Int Int))) (|v_#memory_$Pointer$.base_452| (Array Int (Array Int Int)))) (let ((.cse6 (select |v_#memory_$Pointer$.base_108| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|)) (.cse7 (select |v_#memory_$Pointer$.base_109| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|))) (and (= (store |v_#memory_$Pointer$.base_108| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store .cse6 .cse4 (select .cse7 .cse4))) |v_#memory_$Pointer$.base_109|) (= (store |v_#memory_$Pointer$.base_452| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (select |v_#memory_$Pointer$.base_452| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse5 (select .cse6 .cse5))) |v_#memory_$Pointer$.base_108|) (= (store |v_#memory_$Pointer$.base_109| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (store .cse7 .cse1 0) .cse2 (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse2))) |c_#memory_$Pointer$.base|)))) (exists ((|v_#memory_int_380| (Array Int (Array Int Int))) (|v_#memory_int_117| (Array Int (Array Int Int)))) (let ((.cse8 (select |v_#memory_int_117| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|))) (and (= |c_#memory_int| (store |v_#memory_int_117| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store .cse8 .cse2 (select (select |v_#memory_int_117| |c_ULTIMATE.start_pg_init_units_~parm~0#1.base|) (+ 16 |c_ULTIMATE.start_pg_init_units_~parm~0#1.offset|))))) (= (store |v_#memory_int_380| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base| (store (store (store (select |v_#memory_int_380| |c_ULTIMATE.start_pg_init_units_~dev~0#1.base|) .cse5 0) .cse4 0) .cse1 (select .cse8 .cse1))) |v_#memory_int_117|)))))) (and (<= |c_ULTIMATE.start_main_~ldvarg1~0#1| 9223372036854775807) (<= 0 (+ |c_ULTIMATE.start_main_~ldvarg6~0#1| 2147483648)) (= 40 |c_~#pg_mutex~0.base|) (= c_~LDV_IN_INTERRUPT~0 1) (= |c_~#pg_fops~0.offset| 0) (= |c_~#drive1~0.base| 36) (= |c_~#pg_mutex~0.offset| 0) (not (= |c_ULTIMATE.start_pg_init_~#__key~0#1.base| 0)) (= |c_ULTIMATE.start_main_~ldvarg5~0#1.offset| 0) (= |c_ULTIMATE.start_main_~tmp___6~0#1.offset| 0) (= |c_ULTIMATE.start_main_~tmp___2~8#1.base| 0) (= 0 |c_ULTIMATE.start_main_~ldvarg2~0#1.base|) (= |c_ULTIMATE.start_pg_init_units_~unit~0#1| 0) (= 97 c_~major~0) (<= 0 (+ |c_ULTIMATE.start_main_~ldvarg1~0#1| 9223372036854775808)) (= c_~pg_class~0.base 0) (= 3 c_~name~0.base) (= |c_ULTIMATE.start_main_~tmp~22#1.base| 0) (= |c_ULTIMATE.start_main_~tmp___6~0#1.base| 0) (= c_~name~0.offset 0) (= c_~ldv_state_variable_0~0 1) (= 41 |c_~#devices~0.base|) |c_ULTIMATE.start_main_#t~switch287#1| (<= 1 |c_#StackHeapBarrier|) (= c_~pg_class~0.offset 0) (= c_~disable~0 0) (= |c_~#drive1~0.offset| 0) (= c_~ldv_state_variable_1~0 0) (= |c_~#pg_fops~0.base| 43) (<= |c_ULTIMATE.start_main_~ldvarg0~0#1| 2147483647) (= |c_~#drive2~0.base| 37) (= |c_ULTIMATE.start_main_~ldvarg7~0#1.base| 0) (= |c_~#devices~0.offset| 0) (= c_~pg_fops_group1~0.offset 0) (= 35 |c_~#drive0~0.base|) (= c_~pg_fops_group1~0.base 0) (= c_~verbose~0 0) (<= 0 (+ |c_ULTIMATE.start_main_~ldvarg0~0#1| 2147483648)) (<= 0 (+ |c_ULTIMATE.start_main_~tmp___4~0#1| 9223372036854775808)) (<= |c_ULTIMATE.start_main_~tmp___1~12#1| 2147483647) (= |c_ULTIMATE.start_main_~tmp___5~0#1.base| 0) (= |c_ULTIMATE.start_main_~tmp___9~0#1| 1) (<= 0 (+ 2147483648 |c_ULTIMATE.start_main_~ldvarg3~0#1|)) (= |c_ULTIMATE.start_main_~ldvarg7~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~ldvarg3~0#1| 2147483647) (= 42 |c_~#pg_scratch~0.base|) (<= |c_ULTIMATE.start_main_~tmp___4~0#1| 9223372036854775807) (= |c_ULTIMATE.start_main_~tmp___7~0#1| 1) (<= 0 (+ |c_ULTIMATE.start_main_~tmp___0~15#1| 2147483648)) (= c_~pg_drive_count~0 0) (= |c_ULTIMATE.start_main_~tmp~22#1.offset| 0) (= 0 c_~ldv_spin~0) (= c_~pg_fops_group2~0.base 0) (= |c_~#drive2~0.offset| 0) (<= 0 (+ |c_ULTIMATE.start_main_~tmp___3~0#1| 2147483648)) (= |c_ULTIMATE.start_pg_init_~#__key~0#1.offset| 0) (<= 0 (+ |c_ULTIMATE.start_main_~tmp___1~12#1| 2147483648)) (= c_~ref_cnt~0 0) (= |c_~#drives~0.offset| 0) (<= |c_ULTIMATE.start_main_~tmp___3~0#1| 2147483647) (= c_~pg_fops_group2~0.offset 0) (= |c_ULTIMATE.start_main_~ldvarg5~0#1.base| 0) (= |c_~#drive3~0.base| 38) (= |c_ULTIMATE.start_main_~tmp___2~8#1.offset| 0) (exists ((|v_#length_96| (Array Int Int))) (= |c_#length| (store |v_#length_96| |c_ULTIMATE.start_pg_init_~#__key~0#1.base| 8))) (= |c_ULTIMATE.start_main_~ldvarg2~0#1.offset| 0) (<= |c_ULTIMATE.start_main_~ldvarg6~0#1| 2147483647) (= c_~ldv_retval_1~0 0) (= |c_ULTIMATE.start_main_~ldvarg4~0#1.offset| 0) (<= (+ |c_#StackHeapBarrier| 1) |c_ULTIMATE.start_pg_init_~#__key~0#1.base|) (= |c_ULTIMATE.start_main_~tmp___5~0#1.offset| 0) (= c_~ldv_retval_0~0 0) |c_ULTIMATE.start_main_#t~switch277#1| (= |c_~#drive3~0.offset| 0) (<= |c_ULTIMATE.start_main_~tmp___0~15#1| 2147483647) (= |c_~#drives~0.base| 39) (= |c_~#pg_scratch~0.offset| 0) (= |c_ULTIMATE.start_main_~ldvarg4~0#1.base| 0) (exists ((|v_#valid_193| (Array Int Int))) (and (= (select |v_#valid_193| |c_ULTIMATE.start_pg_init_~#__key~0#1.base|) 0) (= |c_#valid| (store |v_#valid_193| |c_ULTIMATE.start_pg_init_~#__key~0#1.base| 1)))) (= 0 |c_~#drive0~0.offset|))) is different from true [2023-12-02 13:53:03,007 WARN L293 SmtUtils]: Spent 10.16s on a formula simplification. DAG size of input: 189 DAG size of output: 189 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)