./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire --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 82abe2bc16b32af306db7c09a41c9db0587ba64425916c43bed05447e1d05407 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:09,451 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:09,606 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-11-23 21:18:09,614 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:09,615 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:09,671 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:09,672 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:09,672 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:09,674 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:09,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:09,680 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:09,681 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:09,681 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:09,683 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:18:09,684 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:09,684 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:09,685 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:18:09,686 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:18:09,686 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:09,687 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:18:09,687 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:18:09,688 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:18:09,689 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:09,690 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:09,691 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:18:09,691 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:09,692 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:09,692 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:09,693 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:09,693 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:09,695 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:09,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:09,696 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:09,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:09,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:09,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:09,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:09,698 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:09,698 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:18:09,699 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:18:09,699 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:09,699 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:09,700 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:09,700 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:09,701 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_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82abe2bc16b32af306db7c09a41c9db0587ba64425916c43bed05447e1d05407 [2023-11-23 21:18:10,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:10,141 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:10,144 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:10,145 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:10,146 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:10,147 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2023-11-23 21:18:13,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:13,776 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:13,777 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2023-11-23 21:18:13,793 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/data/26982c823/0003b268f35d466b85d1c2a34f0086f3/FLAG05bdf60ba [2023-11-23 21:18:13,807 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/data/26982c823/0003b268f35d466b85d1c2a34f0086f3 [2023-11-23 21:18:13,809 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:13,811 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:13,812 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:13,813 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:13,818 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:13,819 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:13,820 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c78437e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:13, skipping insertion in model container [2023-11-23 21:18:13,820 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:13" (1/1) ... [2023-11-23 21:18:13,897 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:14,084 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_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1174,1187] [2023-11-23 21:18:14,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:14,503 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:14,521 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_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1174,1187] [2023-11-23 21:18:14,698 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:14,714 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:14,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14 WrapperNode [2023-11-23 21:18:14,715 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:14,718 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:14,718 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:14,718 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:14,727 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:14,812 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:15,491 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 4440 [2023-11-23 21:18:15,492 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:15,493 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:15,493 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:15,493 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:15,505 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:15,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:15,623 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:15,624 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:15,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:15,901 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:15,928 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:15,958 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:16,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:16,044 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:16,044 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:16,045 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:16,046 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (1/1) ... [2023-11-23 21:18:16,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:16,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:16,091 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:16,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:18:16,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:16,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:16,598 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:16,601 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:20,658 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:29,438 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:29,438 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:18:29,440 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:29 BoogieIcfgContainer [2023-11-23 21:18:29,440 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:29,445 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:29,445 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:29,448 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:29,449 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:13" (1/3) ... [2023-11-23 21:18:29,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d733815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:29, skipping insertion in model container [2023-11-23 21:18:29,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:14" (2/3) ... [2023-11-23 21:18:29,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d733815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:29, skipping insertion in model container [2023-11-23 21:18:29,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:29" (3/3) ... [2023-11-23 21:18:29,454 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.1.prop1-func-interl.c [2023-11-23 21:18:29,477 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:29,478 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:18:29,540 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:29,548 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;@28eec2af, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:29,549 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:18:29,555 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:29,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:18:29,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:29,562 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:18:29,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:29,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:29,572 INFO L85 PathProgramCache]: Analyzing trace with hash 173344046, now seen corresponding path program 1 times [2023-11-23 21:18:29,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:18:29,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258886695] [2023-11-23 21:18:29,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:29,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:18:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:30,375 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 21:18:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 21:18:30,954 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 21:18:30,957 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 21:18:30,958 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-23 21:18:30,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:18:30,967 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-11-23 21:18:30,975 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 21:18:31,022 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-11-23 21:18:31,037 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 09:18:31 BoogieIcfgContainer [2023-11-23 21:18:31,037 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 21:18:31,038 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 21:18:31,038 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 21:18:31,038 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 21:18:31,039 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:29" (3/4) ... [2023-11-23 21:18:31,041 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-23 21:18:31,043 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 21:18:31,044 INFO L158 Benchmark]: Toolchain (without parser) took 17232.77ms. Allocated memory was 178.3MB in the beginning and 1.2GB in the end (delta: 1.0GB). Free memory was 145.9MB in the beginning and 671.5MB in the end (delta: -525.6MB). Peak memory consumption was 512.3MB. Max. memory is 16.1GB. [2023-11-23 21:18:31,045 INFO L158 Benchmark]: CDTParser took 1.61ms. Allocated memory is still 125.8MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:31,045 INFO L158 Benchmark]: CACSL2BoogieTranslator took 903.53ms. Allocated memory is still 178.3MB. Free memory was 145.9MB in the beginning and 94.5MB in the end (delta: 51.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2023-11-23 21:18:31,046 INFO L158 Benchmark]: Boogie Procedure Inliner took 774.62ms. Allocated memory was 178.3MB in the beginning and 293.6MB in the end (delta: 115.3MB). Free memory was 94.5MB in the beginning and 201.8MB in the end (delta: -107.2MB). Peak memory consumption was 85.4MB. Max. memory is 16.1GB. [2023-11-23 21:18:31,047 INFO L158 Benchmark]: Boogie Preprocessor took 548.48ms. Allocated memory is still 293.6MB. Free memory was 201.8MB in the beginning and 164.0MB in the end (delta: 37.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. [2023-11-23 21:18:31,048 INFO L158 Benchmark]: RCFGBuilder took 13396.90ms. Allocated memory was 293.6MB in the beginning and 1.2GB in the end (delta: 922.7MB). Free memory was 164.0MB in the beginning and 762.7MB in the end (delta: -598.7MB). Peak memory consumption was 447.8MB. Max. memory is 16.1GB. [2023-11-23 21:18:31,049 INFO L158 Benchmark]: TraceAbstraction took 1592.89ms. Allocated memory is still 1.2GB. Free memory was 761.7MB in the beginning and 672.5MB in the end (delta: 89.1MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. [2023-11-23 21:18:31,049 INFO L158 Benchmark]: Witness Printer took 4.87ms. Allocated memory is still 1.2GB. Free memory is still 671.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 21:18:31,053 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.61ms. Allocated memory is still 125.8MB. Free memory is still 97.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 903.53ms. Allocated memory is still 178.3MB. Free memory was 145.9MB in the beginning and 94.5MB in the end (delta: 51.4MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 774.62ms. Allocated memory was 178.3MB in the beginning and 293.6MB in the end (delta: 115.3MB). Free memory was 94.5MB in the beginning and 201.8MB in the end (delta: -107.2MB). Peak memory consumption was 85.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 548.48ms. Allocated memory is still 293.6MB. Free memory was 201.8MB in the beginning and 164.0MB in the end (delta: 37.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.1GB. * RCFGBuilder took 13396.90ms. Allocated memory was 293.6MB in the beginning and 1.2GB in the end (delta: 922.7MB). Free memory was 164.0MB in the beginning and 762.7MB in the end (delta: -598.7MB). Peak memory consumption was 447.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1592.89ms. Allocated memory is still 1.2GB. Free memory was 761.7MB in the beginning and 672.5MB in the end (delta: 89.1MB). Peak memory consumption was 90.2MB. Max. memory is 16.1GB. * Witness Printer took 4.87ms. Allocated memory is still 1.2GB. Free memory is still 671.5MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 21]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 128. Possible FailurePath: [L26] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L27] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L29] const SORT_2 mask_SORT_2 = (SORT_2)-1 >> (sizeof(SORT_2) * 8 - 8); [L30] const SORT_2 msb_SORT_2 = (SORT_2)1 << (8 - 1); [L32] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 24); [L33] const SORT_3 msb_SORT_3 = (SORT_3)1 << (24 - 1); [L35] const SORT_4 mask_SORT_4 = (SORT_4)-1 >> (sizeof(SORT_4) * 8 - 32); [L36] const SORT_4 msb_SORT_4 = (SORT_4)1 << (32 - 1); [L38] const SORT_2 var_5 = 0; [L39] const SORT_1 var_14 = 0; [L40] const SORT_4 var_43 = 1; [L41] const SORT_4 var_44 = 0; [L42] const SORT_2 var_54 = 0; [L43] const SORT_2 var_56 = 3; [L44] const SORT_2 var_59 = 2; [L45] const SORT_2 var_62 = 1; [L46] const SORT_2 var_70 = 255; [L47] const SORT_3 var_74 = 0; [L48] const SORT_4 var_78 = 255; [L50] SORT_1 input_53; [L51] SORT_1 input_55; [L52] SORT_1 input_57; [L53] SORT_1 input_58; [L54] SORT_1 input_60; [L55] SORT_1 input_61; [L56] SORT_1 input_71; [L57] SORT_1 input_72; [L58] SORT_1 input_73; [L59] SORT_1 input_90; [L60] SORT_1 input_91; [L61] SORT_1 input_106; [L62] SORT_1 input_107; [L63] SORT_1 input_124; [L64] SORT_1 input_132; [L65] SORT_1 input_140; [L66] SORT_1 input_148; [L67] SORT_1 input_156; [L68] SORT_1 input_164; [L70] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L70] SORT_2 state_6 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L71] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L71] SORT_2 state_8 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L72] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L72] SORT_2 state_10 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L73] EXPR __VERIFIER_nondet_uchar() & mask_SORT_2 [L73] SORT_2 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_2; [L74] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L74] SORT_1 state_15 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L75] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L75] SORT_1 state_17 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L76] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L76] SORT_1 state_19 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L77] SORT_1 state_21 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L78] SORT_1 state_23 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L79] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L79] SORT_1 state_25 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L80] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L80] SORT_1 state_27 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L81] SORT_1 state_29 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L82] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L82] SORT_1 state_31 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L83] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L83] SORT_1 state_33 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L84] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L84] SORT_1 state_35 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L85] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L85] SORT_1 state_37 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L86] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L86] SORT_1 state_39 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L87] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L87] SORT_1 state_41 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L89] SORT_2 init_7_arg_1 = var_5; [L90] state_6 = init_7_arg_1 [L91] SORT_2 init_9_arg_1 = var_5; [L92] state_8 = init_9_arg_1 [L93] SORT_2 init_11_arg_1 = var_5; [L94] state_10 = init_11_arg_1 [L95] SORT_2 init_13_arg_1 = var_5; [L96] state_12 = init_13_arg_1 [L97] SORT_1 init_16_arg_1 = var_14; [L98] state_15 = init_16_arg_1 [L99] SORT_1 init_18_arg_1 = var_14; [L100] state_17 = init_18_arg_1 [L101] SORT_1 init_20_arg_1 = var_14; [L102] state_19 = init_20_arg_1 [L103] SORT_1 init_22_arg_1 = var_14; [L104] state_21 = init_22_arg_1 [L105] SORT_1 init_24_arg_1 = var_14; [L106] state_23 = init_24_arg_1 [L107] SORT_1 init_26_arg_1 = var_14; [L108] state_25 = init_26_arg_1 [L109] SORT_1 init_28_arg_1 = var_14; [L110] state_27 = init_28_arg_1 [L111] SORT_1 init_30_arg_1 = var_14; [L112] state_29 = init_30_arg_1 [L113] SORT_1 init_32_arg_1 = var_14; [L114] state_31 = init_32_arg_1 [L115] SORT_1 init_34_arg_1 = var_14; [L116] state_33 = init_34_arg_1 [L117] SORT_1 init_36_arg_1 = var_14; [L118] state_35 = init_36_arg_1 [L119] SORT_1 init_38_arg_1 = var_14; [L120] state_37 = init_38_arg_1 [L121] SORT_1 init_40_arg_1 = var_14; [L122] state_39 = init_40_arg_1 [L123] SORT_1 init_42_arg_1 = var_14; [L124] state_41 = init_42_arg_1 VAL [init_11_arg_1=0, init_13_arg_1=0, init_16_arg_1=0, init_18_arg_1=0, init_20_arg_1=0, init_22_arg_1=0, init_24_arg_1=0, init_26_arg_1=0, init_28_arg_1=0, init_30_arg_1=0, init_32_arg_1=0, init_34_arg_1=0, init_36_arg_1=0, init_38_arg_1=0, init_40_arg_1=0, init_42_arg_1=0, init_7_arg_1=0, init_9_arg_1=0, mask_SORT_1=1, mask_SORT_2=255, mask_SORT_3=16777215, mask_SORT_4=4294967295, msb_SORT_1=1, msb_SORT_2=128, msb_SORT_3=8388608, msb_SORT_4=2147483648, state_10=0, state_12=0, state_15=0, state_17=0, state_19=0, state_21=0, state_23=0, state_25=0, state_27=0, state_29=0, state_31=0, state_33=0, state_35=0, state_37=0, state_39=0, state_41=0, state_6=0, state_8=0, var_14=0, var_43=1, var_44=0, var_54=0, var_56=3, var_59=2, var_5=0, var_62=1, var_70=255, var_74=0, var_78=255] [L127] input_53 = __VERIFIER_nondet_uchar() [L128] EXPR input_53 & mask_SORT_1 [L128] input_53 = input_53 & mask_SORT_1 [L129] input_55 = __VERIFIER_nondet_uchar() [L130] EXPR input_55 & mask_SORT_1 [L130] input_55 = input_55 & mask_SORT_1 [L131] input_57 = __VERIFIER_nondet_uchar() [L132] EXPR input_57 & mask_SORT_1 [L132] input_57 = input_57 & mask_SORT_1 [L133] input_58 = __VERIFIER_nondet_uchar() [L134] EXPR input_58 & mask_SORT_1 [L134] input_58 = input_58 & mask_SORT_1 [L135] input_60 = __VERIFIER_nondet_uchar() [L136] EXPR input_60 & mask_SORT_1 [L136] input_60 = input_60 & mask_SORT_1 [L137] input_61 = __VERIFIER_nondet_uchar() [L138] EXPR input_61 & mask_SORT_1 [L138] input_61 = input_61 & mask_SORT_1 [L139] input_71 = __VERIFIER_nondet_uchar() [L140] EXPR input_71 & mask_SORT_1 [L140] input_71 = input_71 & mask_SORT_1 [L141] input_72 = __VERIFIER_nondet_uchar() [L142] EXPR input_72 & mask_SORT_1 [L142] input_72 = input_72 & mask_SORT_1 [L143] input_73 = __VERIFIER_nondet_uchar() [L144] EXPR input_73 & mask_SORT_1 [L144] input_73 = input_73 & mask_SORT_1 [L145] input_90 = __VERIFIER_nondet_uchar() [L146] EXPR input_90 & mask_SORT_1 [L146] input_90 = input_90 & mask_SORT_1 [L147] input_91 = __VERIFIER_nondet_uchar() [L148] EXPR input_91 & mask_SORT_1 [L148] input_91 = input_91 & mask_SORT_1 [L149] input_106 = __VERIFIER_nondet_uchar() [L150] EXPR input_106 & mask_SORT_1 [L150] input_106 = input_106 & mask_SORT_1 [L151] input_107 = __VERIFIER_nondet_uchar() [L152] EXPR input_107 & mask_SORT_1 [L152] input_107 = input_107 & mask_SORT_1 [L153] input_124 = __VERIFIER_nondet_uchar() [L154] input_132 = __VERIFIER_nondet_uchar() [L155] input_140 = __VERIFIER_nondet_uchar() [L156] input_148 = __VERIFIER_nondet_uchar() [L157] input_156 = __VERIFIER_nondet_uchar() [L158] input_164 = __VERIFIER_nondet_uchar() [L161] SORT_1 var_45_arg_0 = state_23; [L162] SORT_4 var_45_arg_1 = var_43; [L163] SORT_4 var_45_arg_2 = var_44; [L164] SORT_4 var_45 = var_45_arg_0 ? var_45_arg_1 : var_45_arg_2; [L165] SORT_1 var_46_arg_0 = state_31; [L166] SORT_4 var_46_arg_1 = var_43; [L167] SORT_4 var_46_arg_2 = var_44; [L168] SORT_4 var_46 = var_46_arg_0 ? var_46_arg_1 : var_46_arg_2; [L169] SORT_4 var_47_arg_0 = var_45; [L170] SORT_4 var_47_arg_1 = var_46; [L171] SORT_4 var_47 = var_47_arg_0 + var_47_arg_1; [L172] SORT_1 var_48_arg_0 = state_39; [L173] SORT_4 var_48_arg_1 = var_43; [L174] SORT_4 var_48_arg_2 = var_44; [L175] SORT_4 var_48 = var_48_arg_0 ? var_48_arg_1 : var_48_arg_2; [L176] SORT_4 var_49_arg_0 = var_47; [L177] SORT_4 var_49_arg_1 = var_48; [L178] SORT_4 var_49 = var_49_arg_0 + var_49_arg_1; [L179] EXPR var_49 & mask_SORT_4 [L179] var_49 = var_49 & mask_SORT_4 [L180] SORT_4 var_50_arg_0 = var_49; [L181] SORT_4 var_50_arg_1 = var_43; [L182] SORT_1 var_50 = var_50_arg_0 <= var_50_arg_1; [L183] SORT_1 var_51_arg_0 = ~state_41; [L184] EXPR var_51_arg_0 & mask_SORT_1 [L184] var_51_arg_0 = var_51_arg_0 & mask_SORT_1 [L185] SORT_1 var_51_arg_1 = ~var_50; [L186] EXPR var_51_arg_1 & mask_SORT_1 [L186] var_51_arg_1 = var_51_arg_1 & mask_SORT_1 [L187] EXPR var_51_arg_0 & var_51_arg_1 [L187] SORT_1 var_51 = var_51_arg_0 & var_51_arg_1; [L188] EXPR var_51 & mask_SORT_1 [L188] var_51 = var_51 & mask_SORT_1 [L189] SORT_1 bad_52_arg_0 = var_51; [L190] CALL __VERIFIER_assert(!(bad_52_arg_0)) [L21] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L21] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-23 21:18:31,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire --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 82abe2bc16b32af306db7c09a41c9db0587ba64425916c43bed05447e1d05407 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:18:34,282 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:18:34,436 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-11-23 21:18:34,449 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:18:34,450 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:18:34,498 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:18:34,499 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:18:34,500 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:18:34,501 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:18:34,507 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:18:34,507 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:18:34,508 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:18:34,508 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:18:34,510 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:18:34,511 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:18:34,512 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:18:34,513 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:18:34,514 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:18:34,514 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:18:34,515 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:18:34,516 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:18:34,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:18:34,517 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-23 21:18:34,518 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-23 21:18:34,518 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-23 21:18:34,519 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:18:34,519 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:18:34,520 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:18:34,520 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 21:18:34,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:18:34,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:18:34,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:34,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:18:34,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:18:34,524 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:18:34,524 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-11-23 21:18:34,524 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-23 21:18:34,525 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:18:34,525 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:18:34,526 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:18:34,526 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:18:34,527 INFO L153 SettingsManager]: * Logic for external solver=AUFBV 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_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82abe2bc16b32af306db7c09a41c9db0587ba64425916c43bed05447e1d05407 [2023-11-23 21:18:34,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:18:35,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:18:35,020 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:18:35,022 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:18:35,022 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:18:35,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2023-11-23 21:18:38,560 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:18:39,115 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:18:39,116 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c [2023-11-23 21:18:39,135 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/data/8453e0418/ab460da4d492415ebd00d6728e7ead49/FLAG543583867 [2023-11-23 21:18:39,153 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/data/8453e0418/ab460da4d492415ebd00d6728e7ead49 [2023-11-23 21:18:39,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:18:39,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:18:39,160 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:39,160 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:18:39,168 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:18:39,169 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,171 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31a8a6bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:39, skipping insertion in model container [2023-11-23 21:18:39,171 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:18:39" (1/1) ... [2023-11-23 21:18:39,272 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:18:39,565 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_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1174,1187] [2023-11-23 21:18:40,040 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:40,085 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:18:40,102 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_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.fischer.1.prop1-func-interl.c[1174,1187] [2023-11-23 21:18:40,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:18:40,300 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:18:40,301 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40 WrapperNode [2023-11-23 21:18:40,301 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:18:40,303 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:40,303 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:18:40,304 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:18:40,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,362 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,523 INFO L138 Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1151 [2023-11-23 21:18:40,524 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:18:40,524 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:18:40,528 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:18:40,529 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:18:40,542 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,562 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,637 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,643 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,723 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:18:40,724 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:18:40,724 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:18:40,725 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:18:40,726 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (1/1) ... [2023-11-23 21:18:40,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:18:40,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:18:40,783 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:18:40,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:18:40,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-11-23 21:18:40,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:18:40,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:18:41,270 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:18:41,273 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:18:43,810 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:18:43,934 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:18:43,934 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:18:43,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:43 BoogieIcfgContainer [2023-11-23 21:18:43,936 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:18:43,941 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:18:43,942 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:18:43,947 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:18:43,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:18:39" (1/3) ... [2023-11-23 21:18:43,948 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f74fc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:43, skipping insertion in model container [2023-11-23 21:18:43,949 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:18:40" (2/3) ... [2023-11-23 21:18:43,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f74fc63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:18:43, skipping insertion in model container [2023-11-23 21:18:43,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:18:43" (3/3) ... [2023-11-23 21:18:43,953 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.fischer.1.prop1-func-interl.c [2023-11-23 21:18:43,980 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:18:43,981 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:18:44,087 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:18:44,097 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;@4339948f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:18:44,098 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:18:44,103 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:44,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-23 21:18:44,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:44,115 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-23 21:18:44,116 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:44,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:44,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-11-23 21:18:44,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:18:44,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2067031796] [2023-11-23 21:18:44,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:44,155 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:18:44,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:18:44,159 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:18:44,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-23 21:18:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:44,609 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-23 21:18:44,624 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:45,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:45,308 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 21:18:45,310 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-11-23 21:18:45,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2067031796] [2023-11-23 21:18:45,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2067031796] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:18:45,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:18:45,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 21:18:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302141937] [2023-11-23 21:18:45,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:18:45,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:18:45,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-11-23 21:18:45,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:18:45,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:18:45,369 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:45,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:18:45,689 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-11-23 21:18:45,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:18:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-23 21:18:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:18:45,702 INFO L225 Difference]: With dead ends: 16 [2023-11-23 21:18:45,703 INFO L226 Difference]: Without dead ends: 9 [2023-11-23 21:18:45,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:18:45,711 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:18:45,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:18:45,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-11-23 21:18:45,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-11-23 21:18:45,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:45,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-11-23 21:18:45,757 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-11-23 21:18:45,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:18:45,758 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-11-23 21:18:45,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 21:18:45,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-11-23 21:18:45,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-23 21:18:45,759 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:18:45,760 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-11-23 21:18:45,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2023-11-23 21:18:45,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:18:45,964 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:18:45,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:18:45,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-11-23 21:18:45,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-11-23 21:18:45,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [297191716] [2023-11-23 21:18:45,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:18:45,969 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-23 21:18:45,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/mathsat [2023-11-23 21:18:45,974 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-23 21:18:45,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e48a6fa0-2920-4f91-9b82-5c80cd4e7e09/bin/utaipan-verify-mE87zJ7Ire/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2023-11-23 21:18:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:18:47,212 INFO L262 TraceCheckSpWp]: Trace formula consists of 978 conjuncts, 126 conjunts are in the unsatisfiable core [2023-11-23 21:18:47,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 21:18:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:18:50,220 INFO L327 TraceCheckSpWp]: Computing backward predicates...