./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c --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_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/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_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/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_ace68d45-0266-4bd8-9786-67026b82d72a/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 e188a971cba665e2b77b0e826b47d617ddf57bd12a8f8136f6d81bf903c7591b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:09:37,179 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:09:37,265 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Default.epf [2023-12-02 13:09:37,269 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:09:37,270 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:09:37,292 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:09:37,293 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:09:37,293 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:09:37,294 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:09:37,295 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:09:37,295 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:09:37,296 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:09:37,296 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:09:37,297 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:09:37,297 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:09:37,298 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:09:37,298 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:09:37,299 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:09:37,299 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:09:37,300 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:09:37,301 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:09:37,301 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:09:37,302 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:09:37,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:09:37,303 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:09:37,304 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:09:37,304 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:09:37,304 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:09:37,305 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:09:37,305 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:09:37,306 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:09:37,306 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:09:37,306 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:09:37,307 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:09:37,307 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:09:37,307 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:09:37,307 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:09:37,307 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:09:37,308 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:09:37,308 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:09:37,308 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:09:37,308 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:09:37,308 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:09:37,309 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:09:37,309 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_ace68d45-0266-4bd8-9786-67026b82d72a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e188a971cba665e2b77b0e826b47d617ddf57bd12a8f8136f6d81bf903c7591b [2023-12-02 13:09:37,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:09:37,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:09:37,581 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:09:37,582 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:09:37,582 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:09:37,583 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2023-12-02 13:09:40,385 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:09:40,585 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:09:40,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2023-12-02 13:09:40,597 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/data/ba4d463f5/7ee5e8e477624effa162a2f74c34e3cb/FLAGcf418ae1b [2023-12-02 13:09:40,613 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/data/ba4d463f5/7ee5e8e477624effa162a2f74c34e3cb [2023-12-02 13:09:40,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:09:40,616 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:09:40,618 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:09:40,618 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:09:40,623 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:09:40,623 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:40,625 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@86a683a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40, skipping insertion in model container [2023-12-02 13:09:40,625 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:40,658 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:09:40,792 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_ace68d45-0266-4bd8-9786-67026b82d72a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1245,1258] [2023-12-02 13:09:40,885 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:09:40,895 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:09:40,909 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_ace68d45-0266-4bd8-9786-67026b82d72a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1245,1258] [2023-12-02 13:09:40,965 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:09:40,981 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:09:40,982 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40 WrapperNode [2023-12-02 13:09:40,982 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:09:40,983 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:09:40,983 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:09:40,983 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:09:40,989 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,010 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,087 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 563 [2023-12-02 13:09:41,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:09:41,088 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:09:41,089 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:09:41,089 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:09:41,096 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,110 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,141 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,147 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,164 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,178 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:09:41,179 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:09:41,179 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:09:41,179 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:09:41,180 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (1/1) ... [2023-12-02 13:09:41,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:09:41,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:41,205 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:09:41,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:09:41,244 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:09:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:09:41,245 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:09:41,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:09:41,365 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:09:41,367 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:09:42,000 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:09:42,635 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:09:42,636 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:09:42,637 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:42 BoogieIcfgContainer [2023-12-02 13:09:42,638 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:09:42,640 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:09:42,641 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:09:42,644 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:09:42,644 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:09:40" (1/3) ... [2023-12-02 13:09:42,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0a85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:09:42, skipping insertion in model container [2023-12-02 13:09:42,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:40" (2/3) ... [2023-12-02 13:09:42,645 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0a85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:09:42, skipping insertion in model container [2023-12-02 13:09:42,645 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:42" (3/3) ... [2023-12-02 13:09:42,647 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b02.c [2023-12-02 13:09:42,687 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:09:42,687 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:09:42,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:09:42,747 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;@3f307b3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:09:42,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:09:42,752 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) [2023-12-02 13:09:42,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 13:09:42,759 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:42,759 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 13:09:42,760 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:42,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash 15899968, now seen corresponding path program 1 times [2023-12-02 13:09:42,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:42,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841014058] [2023-12-02 13:09:42,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:42,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:43,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:44,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:09:44,111 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:09:44,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841014058] [2023-12-02 13:09:44,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841014058] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:44,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:44,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:09:44,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684450135] [2023-12-02 13:09:44,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:44,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:09:44,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:09:44,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:09:44,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:09:44,155 INFO L87 Difference]: Start difference. First 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) 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) [2023-12-02 13:09:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:45,180 INFO L93 Difference]: Finished difference Result 15 states and 20 transitions. [2023-12-02 13:09:45,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-02 13:09:45,182 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 [2023-12-02 13:09:45,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:45,188 INFO L225 Difference]: With dead ends: 15 [2023-12-02 13:09:45,188 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 13:09:45,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:09:45,193 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:45,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-12-02 13:09:45,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 13:09:45,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 13:09:45,217 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) [2023-12-02 13:09:45,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 13:09:45,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 13:09:45,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:45,219 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 13:09:45,219 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) [2023-12-02 13:09:45,220 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 13:09:45,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 13:09:45,220 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:45,220 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 13:09:45,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:09:45,221 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:45,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:45,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1246337826, now seen corresponding path program 1 times [2023-12-02 13:09:45,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:09:45,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767999254] [2023-12-02 13:09:45,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:45,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:09:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:09:47,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:09:48,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:09:48,739 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:09:48,740 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:09:48,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-02 13:09:48,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:09:48,748 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-12-02 13:09:48,751 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-12-02 13:09:48,798 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 13:09:48,799 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2023-12-02 13:09:48,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 01:09:48 BoogieIcfgContainer [2023-12-02 13:09:48,820 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-02 13:09:48,821 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-12-02 13:09:48,821 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-12-02 13:09:48,822 INFO L274 PluginConnector]: Witness Printer initialized [2023-12-02 13:09:48,822 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:42" (3/4) ... [2023-12-02 13:09:48,824 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-12-02 13:09:48,826 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-12-02 13:09:48,827 INFO L158 Benchmark]: Toolchain (without parser) took 8209.71ms. Allocated memory was 159.4MB in the beginning and 320.9MB in the end (delta: 161.5MB). Free memory was 123.4MB in the beginning and 241.7MB in the end (delta: -118.3MB). Peak memory consumption was 45.0MB. Max. memory is 16.1GB. [2023-12-02 13:09:48,827 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:09:48,828 INFO L158 Benchmark]: CACSL2BoogieTranslator took 364.28ms. Allocated memory is still 159.4MB. Free memory was 123.2MB in the beginning and 104.5MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2023-12-02 13:09:48,829 INFO L158 Benchmark]: Boogie Procedure Inliner took 105.23ms. Allocated memory is still 159.4MB. Free memory was 104.5MB in the beginning and 92.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-12-02 13:09:48,829 INFO L158 Benchmark]: Boogie Preprocessor took 89.61ms. Allocated memory is still 159.4MB. Free memory was 92.9MB in the beginning and 88.1MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-12-02 13:09:48,830 INFO L158 Benchmark]: RCFGBuilder took 1458.90ms. Allocated memory is still 159.4MB. Free memory was 88.1MB in the beginning and 52.0MB in the end (delta: 36.1MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. [2023-12-02 13:09:48,831 INFO L158 Benchmark]: TraceAbstraction took 6180.18ms. Allocated memory was 159.4MB in the beginning and 320.9MB in the end (delta: 161.5MB). Free memory was 52.0MB in the beginning and 242.7MB in the end (delta: -190.7MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. [2023-12-02 13:09:48,831 INFO L158 Benchmark]: Witness Printer took 4.62ms. Allocated memory is still 320.9MB. Free memory is still 241.7MB. There was no memory consumed. Max. memory is 16.1GB. [2023-12-02 13:09:48,834 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 115.3MB. Free memory is still 88.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 364.28ms. Allocated memory is still 159.4MB. Free memory was 123.2MB in the beginning and 104.5MB in the end (delta: 18.6MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 105.23ms. Allocated memory is still 159.4MB. Free memory was 104.5MB in the beginning and 92.9MB in the end (delta: 11.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 89.61ms. Allocated memory is still 159.4MB. Free memory was 92.9MB in the beginning and 88.1MB in the end (delta: 4.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1458.90ms. Allocated memory is still 159.4MB. Free memory was 88.1MB in the beginning and 52.0MB in the end (delta: 36.1MB). Peak memory consumption was 40.9MB. Max. memory is 16.1GB. * TraceAbstraction took 6180.18ms. Allocated memory was 159.4MB in the beginning and 320.9MB in the end (delta: 161.5MB). Free memory was 52.0MB in the beginning and 242.7MB in the end (delta: -190.7MB). Peak memory consumption was 75.2MB. Max. memory is 16.1GB. * Witness Printer took 4.62ms. Allocated memory is still 320.9MB. Free memory is still 241.7MB. 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 bitwiseOr at line 88, overapproximation of bitwiseAnd at line 73. 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_7 mask_SORT_7 = (SORT_7)-1 >> (sizeof(SORT_7) * 8 - 32); [L30] const SORT_7 msb_SORT_7 = (SORT_7)1 << (32 - 1); [L32] const SORT_12 mask_SORT_12 = (SORT_12)-1 >> (sizeof(SORT_12) * 8 - 3); [L33] const SORT_12 msb_SORT_12 = (SORT_12)1 << (3 - 1); [L35] const SORT_47 mask_SORT_47 = (SORT_47)-1 >> (sizeof(SORT_47) * 8 - 2); [L36] const SORT_47 msb_SORT_47 = (SORT_47)1 << (2 - 1); [L38] const SORT_1 var_4 = 0; [L39] const SORT_7 var_9 = 1; [L40] const SORT_12 var_13 = 0; [L41] const SORT_1 var_21 = 1; [L42] const SORT_12 var_28 = 2; [L43] const SORT_12 var_31 = 1; [L44] const SORT_12 var_35 = 4; [L45] const SORT_12 var_38 = 6; [L46] const SORT_12 var_41 = 5; [L47] const SORT_12 var_45 = 3; [L48] const SORT_7 var_57 = 0; [L50] SORT_1 input_2; [L51] SORT_1 input_3; [L52] SORT_12 input_55; [L53] SORT_12 input_62; [L54] SORT_12 input_75; [L56] EXPR __VERIFIER_nondet_uchar() & mask_SORT_1 [L56] SORT_1 state_5 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L57] EXPR __VERIFIER_nondet_uchar() & mask_SORT_12 [L57] SORT_12 state_14 = __VERIFIER_nondet_uchar() & mask_SORT_12; [L59] SORT_1 init_6_arg_1 = var_4; [L60] state_5 = init_6_arg_1 [L61] SORT_12 init_15_arg_1 = var_13; [L62] state_14 = init_15_arg_1 VAL [init_15_arg_1=0, init_6_arg_1=0, mask_SORT_12=7, mask_SORT_1=1, mask_SORT_47=3, mask_SORT_7=4294967295, msb_SORT_12=4, msb_SORT_1=1, msb_SORT_47=2, msb_SORT_7=2147483648, state_14=0, state_5=0, var_13=0, var_21=1, var_28=2, var_31=1, var_35=4, var_38=6, var_41=5, var_45=3, var_4=0, var_57=0, var_9=1] [L65] input_2 = __VERIFIER_nondet_uchar() [L66] input_3 = __VERIFIER_nondet_uchar() [L67] input_55 = __VERIFIER_nondet_uchar() [L68] input_62 = __VERIFIER_nondet_uchar() [L69] input_75 = __VERIFIER_nondet_uchar() [L72] SORT_1 var_8_arg_0 = state_5; [L73] EXPR var_8_arg_0 & mask_SORT_1 [L73] var_8_arg_0 = var_8_arg_0 & mask_SORT_1 [L74] SORT_7 var_8 = var_8_arg_0; [L75] SORT_7 var_10_arg_0 = var_8; [L76] SORT_7 var_10_arg_1 = var_9; [L77] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L78] SORT_1 var_11_arg_0 = var_10; [L79] SORT_1 var_11 = ~var_11_arg_0; [L80] SORT_12 var_16_arg_0 = state_14; [L81] EXPR var_16_arg_0 & mask_SORT_12 [L81] var_16_arg_0 = var_16_arg_0 & mask_SORT_12 [L82] SORT_7 var_16 = var_16_arg_0; [L83] SORT_7 var_17_arg_0 = var_16; [L84] SORT_7 var_17_arg_1 = var_9; [L85] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L86] SORT_1 var_18_arg_0 = var_11; [L87] SORT_1 var_18_arg_1 = var_17; [L88] EXPR var_18_arg_0 | var_18_arg_1 [L88] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L89] SORT_1 var_22_arg_0 = var_18; [L90] SORT_1 var_22 = ~var_22_arg_0; [L91] SORT_1 var_23_arg_0 = var_21; [L92] SORT_1 var_23_arg_1 = var_22; [L93] EXPR var_23_arg_0 & var_23_arg_1 [L93] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L94] EXPR var_23 & mask_SORT_1 [L94] var_23 = var_23 & mask_SORT_1 [L95] SORT_1 bad_24_arg_0 = var_23; [L96] CALL __VERIFIER_assert(!(bad_24_arg_0)) [L21] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L96] RET __VERIFIER_assert(!(bad_24_arg_0)) [L98] SORT_12 var_42_arg_0 = state_14; [L99] SORT_12 var_42_arg_1 = var_41; [L100] SORT_1 var_42 = var_42_arg_0 == var_42_arg_1; [L101] SORT_12 var_39_arg_0 = state_14; [L102] SORT_12 var_39_arg_1 = var_38; [L103] SORT_1 var_39 = var_39_arg_0 == var_39_arg_1; [L104] SORT_1 var_43_arg_0 = var_42; [L105] SORT_1 var_43_arg_1 = var_39; [L106] EXPR var_43_arg_0 | var_43_arg_1 [L106] SORT_1 var_43 = var_43_arg_0 | var_43_arg_1; [L107] EXPR var_43 & mask_SORT_1 [L107] var_43 = var_43 & mask_SORT_1 [L108] SORT_12 var_36_arg_0 = state_14; [L109] SORT_12 var_36_arg_1 = var_35; [L110] SORT_1 var_36 = var_36_arg_0 == var_36_arg_1; [L111] SORT_12 var_46_arg_0 = state_14; [L112] SORT_12 var_46_arg_1 = var_45; [L113] SORT_1 var_46 = var_46_arg_0 == var_46_arg_1; [L114] SORT_1 var_48_arg_0 = var_36; [L115] SORT_1 var_48_arg_1 = var_46; [L116] EXPR ((SORT_47)var_48_arg_0 << 1) | var_48_arg_1 [L116] SORT_47 var_48 = ((SORT_47)var_48_arg_0 << 1) | var_48_arg_1; [L117] EXPR var_48 & mask_SORT_47 [L117] var_48 = var_48 & mask_SORT_47 [L118] SORT_1 var_49_arg_0 = var_43; [L119] SORT_47 var_49_arg_1 = var_48; [L120] EXPR ((SORT_12)var_49_arg_0 << 2) | var_49_arg_1 [L120] SORT_12 var_49 = ((SORT_12)var_49_arg_0 << 2) | var_49_arg_1; [L121] EXPR var_49 & mask_SORT_12 [L121] var_49 = var_49 & mask_SORT_12 [L122] SORT_12 var_50_arg_0 = var_49; [L123] SORT_1 var_50 = var_50_arg_0 != 0; [L124] SORT_1 var_40_arg_0 = var_39; [L125] SORT_1 var_40_arg_1 = var_4; [L126] SORT_1 var_40_arg_2 = var_4; [L127] SORT_1 var_40 = var_40_arg_0 ? var_40_arg_1 : var_40_arg_2; [L128] SORT_1 var_37_arg_0 = var_36; [L129] SORT_1 var_37_arg_1 = var_21; [L130] SORT_1 var_37_arg_2 = var_4; [L131] SORT_1 var_37 = var_37_arg_0 ? var_37_arg_1 : var_37_arg_2; [L132] SORT_1 var_44_arg_0 = var_43; [L133] SORT_1 var_44_arg_1 = var_40; [L134] SORT_1 var_44_arg_2 = var_37; [L135] SORT_1 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L136] SORT_12 var_32_arg_0 = state_14; [L137] SORT_12 var_32_arg_1 = var_31; [L138] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L139] SORT_12 var_29_arg_0 = state_14; [L140] SORT_12 var_29_arg_1 = var_28; [L141] SORT_1 var_29 = var_29_arg_0 == var_29_arg_1; [L142] SORT_1 var_33_arg_0 = var_32; [L143] SORT_1 var_33_arg_1 = var_29; [L144] EXPR var_33_arg_0 | var_33_arg_1 [L144] SORT_1 var_33 = var_33_arg_0 | var_33_arg_1; [L145] EXPR var_33 & mask_SORT_1 [L145] var_33 = var_33 & mask_SORT_1 [L146] SORT_1 var_30_arg_0 = var_29; [L147] SORT_1 var_30_arg_1 = var_4; [L148] SORT_1 var_30_arg_2 = var_4; [L149] SORT_1 var_30 = var_30_arg_0 ? var_30_arg_1 : var_30_arg_2; [L150] SORT_12 var_26_arg_0 = state_14; [L151] SORT_12 var_26_arg_1 = var_13; [L152] SORT_1 var_26 = var_26_arg_0 == var_26_arg_1; [L153] SORT_1 var_27_arg_0 = var_26; [L154] SORT_1 var_27_arg_1 = var_4; [L155] SORT_1 var_27_arg_2 = state_5; [L156] SORT_1 var_27 = var_27_arg_0 ? var_27_arg_1 : var_27_arg_2; [L157] SORT_1 var_34_arg_0 = var_33; [L158] SORT_1 var_34_arg_1 = var_30; [L159] SORT_1 var_34_arg_2 = var_27; [L160] SORT_1 var_34 = var_34_arg_0 ? var_34_arg_1 : var_34_arg_2; [L161] SORT_1 var_51_arg_0 = var_50; [L162] SORT_1 var_51_arg_1 = var_44; [L163] SORT_1 var_51_arg_2 = var_34; [L164] SORT_1 var_51 = var_51_arg_0 ? var_51_arg_1 : var_51_arg_2; [L165] SORT_1 next_52_arg_1 = var_51; [L166] SORT_12 var_83_arg_0 = state_14; [L167] SORT_12 var_83_arg_1 = var_41; [L168] SORT_1 var_83 = var_83_arg_0 == var_83_arg_1; [L169] SORT_12 var_81_arg_0 = state_14; [L170] SORT_12 var_81_arg_1 = var_38; [L171] SORT_1 var_81 = var_81_arg_0 == var_81_arg_1; [L172] SORT_1 var_84_arg_0 = var_83; [L173] SORT_1 var_84_arg_1 = var_81; [L174] EXPR var_84_arg_0 | var_84_arg_1 [L174] SORT_1 var_84 = var_84_arg_0 | var_84_arg_1; [L175] EXPR var_84 & mask_SORT_1 [L175] var_84 = var_84 & mask_SORT_1 [L176] SORT_12 var_73_arg_0 = state_14; [L177] SORT_12 var_73_arg_1 = var_35; [L178] SORT_1 var_73 = var_73_arg_0 == var_73_arg_1; [L179] SORT_12 var_86_arg_0 = state_14; [L180] SORT_12 var_86_arg_1 = var_45; [L181] SORT_1 var_86 = var_86_arg_0 == var_86_arg_1; [L182] SORT_1 var_87_arg_0 = var_73; [L183] SORT_1 var_87_arg_1 = var_86; [L184] EXPR ((SORT_47)var_87_arg_0 << 1) | var_87_arg_1 [L184] SORT_47 var_87 = ((SORT_47)var_87_arg_0 << 1) | var_87_arg_1; [L185] EXPR var_87 & mask_SORT_47 [L185] var_87 = var_87 & mask_SORT_47 [L186] SORT_1 var_88_arg_0 = var_84; [L187] SORT_47 var_88_arg_1 = var_87; [L188] EXPR ((SORT_12)var_88_arg_0 << 2) | var_88_arg_1 [L188] SORT_12 var_88 = ((SORT_12)var_88_arg_0 << 2) | var_88_arg_1; [L189] EXPR var_88 & mask_SORT_12 [L189] var_88 = var_88 & mask_SORT_12 [L190] SORT_12 var_89_arg_0 = var_88; [L191] SORT_1 var_89 = var_89_arg_0 != 0; [L192] SORT_12 var_79_arg_0 = state_14; [L193] SORT_12 var_79_arg_1 = var_38; [L194] SORT_1 var_79 = var_79_arg_0 == var_79_arg_1; [L195] SORT_1 var_76_arg_0 = input_2; [L196] EXPR var_76_arg_0 & mask_SORT_1 [L196] var_76_arg_0 = var_76_arg_0 & mask_SORT_1 [L197] SORT_7 var_76 = var_76_arg_0; [L198] SORT_7 var_77_arg_0 = var_76; [L199] SORT_7 var_77_arg_1 = var_57; [L200] SORT_1 var_77 = var_77_arg_0 == var_77_arg_1; [L201] SORT_1 var_78_arg_0 = var_77; [L202] SORT_12 var_78_arg_1 = var_35; [L203] SORT_12 var_78_arg_2 = var_13; [L204] SORT_12 var_78 = var_78_arg_0 ? var_78_arg_1 : var_78_arg_2; [L205] SORT_1 var_80_arg_0 = var_79; [L206] SORT_12 var_80_arg_1 = var_78; [L207] SORT_12 var_80_arg_2 = input_75; [L208] SORT_12 var_80 = var_80_arg_0 ? var_80_arg_1 : var_80_arg_2; [L209] SORT_1 var_82_arg_0 = var_81; [L210] SORT_12 var_82_arg_1 = var_80; [L211] SORT_12 var_82_arg_2 = var_38; [L212] SORT_12 var_82 = var_82_arg_0 ? var_82_arg_1 : var_82_arg_2; [L213] SORT_1 var_74_arg_0 = var_73; [L214] SORT_12 var_74_arg_1 = var_31; [L215] SORT_12 var_74_arg_2 = var_35; [L216] SORT_12 var_74 = var_74_arg_0 ? var_74_arg_1 : var_74_arg_2; [L217] SORT_1 var_85_arg_0 = var_84; [L218] SORT_12 var_85_arg_1 = var_82; [L219] SORT_12 var_85_arg_2 = var_74; [L220] SORT_12 var_85 = var_85_arg_0 ? var_85_arg_1 : var_85_arg_2; [L221] SORT_12 var_70_arg_0 = state_14; [L222] SORT_12 var_70_arg_1 = var_31; [L223] SORT_1 var_70 = var_70_arg_0 == var_70_arg_1; [L224] SORT_12 var_68_arg_0 = state_14; [L225] SORT_12 var_68_arg_1 = var_28; [L226] SORT_1 var_68 = var_68_arg_0 == var_68_arg_1; [L227] SORT_1 var_71_arg_0 = var_70; [L228] SORT_1 var_71_arg_1 = var_68; [L229] EXPR var_71_arg_0 | var_71_arg_1 [L229] SORT_1 var_71 = var_71_arg_0 | var_71_arg_1; [L230] EXPR var_71 & mask_SORT_1 [L230] var_71 = var_71 & mask_SORT_1 [L231] SORT_12 var_66_arg_0 = state_14; [L232] SORT_12 var_66_arg_1 = var_28; [L233] SORT_1 var_66 = var_66_arg_0 == var_66_arg_1; [L234] SORT_1 var_63_arg_0 = input_2; [L235] EXPR var_63_arg_0 & mask_SORT_1 [L235] var_63_arg_0 = var_63_arg_0 & mask_SORT_1 [L236] SORT_7 var_63 = var_63_arg_0; [L237] SORT_7 var_64_arg_0 = var_63; [L238] SORT_7 var_64_arg_1 = var_57; [L239] SORT_1 var_64 = var_64_arg_0 == var_64_arg_1; [L240] SORT_1 var_65_arg_0 = var_64; [L241] SORT_12 var_65_arg_1 = var_45; [L242] SORT_12 var_65_arg_2 = var_38; [L243] SORT_12 var_65 = var_65_arg_0 ? var_65_arg_1 : var_65_arg_2; [L244] SORT_1 var_67_arg_0 = var_66; [L245] SORT_12 var_67_arg_1 = var_65; [L246] SORT_12 var_67_arg_2 = input_62; [L247] SORT_12 var_67 = var_67_arg_0 ? var_67_arg_1 : var_67_arg_2; [L248] SORT_12 var_60_arg_0 = state_14; [L249] SORT_12 var_60_arg_1 = var_31; [L250] SORT_1 var_60 = var_60_arg_0 == var_60_arg_1; [L251] SORT_1 var_56_arg_0 = input_2; [L252] EXPR var_56_arg_0 & mask_SORT_1 [L252] var_56_arg_0 = var_56_arg_0 & mask_SORT_1 [L253] SORT_7 var_56 = var_56_arg_0; [L254] SORT_7 var_58_arg_0 = var_56; [L255] SORT_7 var_58_arg_1 = var_57; [L256] SORT_1 var_58 = var_58_arg_0 == var_58_arg_1; [L257] SORT_1 var_59_arg_0 = var_58; [L258] SORT_12 var_59_arg_1 = var_28; [L259] SORT_12 var_59_arg_2 = var_41; [L260] SORT_12 var_59 = var_59_arg_0 ? var_59_arg_1 : var_59_arg_2; [L261] SORT_1 var_61_arg_0 = var_60; [L262] SORT_12 var_61_arg_1 = var_59; [L263] SORT_12 var_61_arg_2 = input_55; [L264] SORT_12 var_61 = var_61_arg_0 ? var_61_arg_1 : var_61_arg_2; [L265] SORT_1 var_69_arg_0 = var_68; [L266] SORT_12 var_69_arg_1 = var_67; [L267] SORT_12 var_69_arg_2 = var_61; [L268] SORT_12 var_69 = var_69_arg_0 ? var_69_arg_1 : var_69_arg_2; [L269] SORT_12 var_53_arg_0 = state_14; [L270] SORT_12 var_53_arg_1 = var_13; [L271] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L272] SORT_1 var_54_arg_0 = var_53; [L273] SORT_12 var_54_arg_1 = var_31; [L274] SORT_12 var_54_arg_2 = state_14; [L275] SORT_12 var_54 = var_54_arg_0 ? var_54_arg_1 : var_54_arg_2; [L276] SORT_1 var_72_arg_0 = var_71; [L277] SORT_12 var_72_arg_1 = var_69; [L278] SORT_12 var_72_arg_2 = var_54; [L279] SORT_12 var_72 = var_72_arg_0 ? var_72_arg_1 : var_72_arg_2; [L280] SORT_1 var_90_arg_0 = var_89; [L281] SORT_12 var_90_arg_1 = var_85; [L282] SORT_12 var_90_arg_2 = var_72; [L283] SORT_12 var_90 = var_90_arg_0 ? var_90_arg_1 : var_90_arg_2; [L284] EXPR var_90 & mask_SORT_12 [L284] var_90 = var_90 & mask_SORT_12 [L285] SORT_12 next_91_arg_1 = var_90; [L287] state_5 = next_52_arg_1 [L288] state_14 = next_91_arg_1 VAL [bad_24_arg_0=0, init_15_arg_1=0, init_6_arg_1=0, input_2=1, input_55=6, input_62=6, input_75=6, mask_SORT_12=7, mask_SORT_1=1, mask_SORT_47=3, mask_SORT_7=4294967295, msb_SORT_12=4, msb_SORT_1=1, msb_SORT_47=2, msb_SORT_7=2147483648, next_52_arg_1=0, next_91_arg_1=1, state_14=1, state_5=0, var_10=0, var_10_arg_0=0, var_10_arg_1=1, var_11=255, var_11_arg_0=0, var_13=0, var_16=0, var_16_arg_0=0, var_17=0, var_17_arg_0=0, var_17_arg_1=1, var_18=255, var_18_arg_0=255, var_18_arg_1=0, var_21=1, var_22=0, var_22_arg_0=255, var_23=0, var_23_arg_0=1, var_23_arg_1=0, var_26=1, var_26_arg_0=0, var_26_arg_1=0, var_27=0, var_27_arg_0=1, var_27_arg_1=0, var_27_arg_2=0, var_28=2, var_29=0, var_29_arg_0=0, var_29_arg_1=2, var_30=0, var_30_arg_0=0, var_30_arg_1=0, var_30_arg_2=0, var_31=1, var_32=0, var_32_arg_0=0, var_32_arg_1=1, var_33=0, var_33_arg_0=0, var_33_arg_1=0, var_34=0, var_34_arg_0=0, var_34_arg_1=0, var_34_arg_2=0, var_35=4, var_36=0, var_36_arg_0=0, var_36_arg_1=4, var_37=0, var_37_arg_0=0, var_37_arg_1=1, var_37_arg_2=0, var_38=6, var_39=0, var_39_arg_0=0, var_39_arg_1=6, var_40=0, var_40_arg_0=0, var_40_arg_1=0, var_40_arg_2=0, var_41=5, var_42=0, var_42_arg_0=0, var_42_arg_1=5, var_43=0, var_43_arg_0=0, var_43_arg_1=0, var_44=0, var_44_arg_0=0, var_44_arg_1=0, var_44_arg_2=0, var_45=3, var_46=0, var_46_arg_0=0, var_46_arg_1=3, var_48=0, var_48_arg_0=0, var_48_arg_1=0, var_49=0, var_49_arg_0=0, var_49_arg_1=0, var_4=0, var_50=0, var_50_arg_0=0, var_51=0, var_51_arg_0=0, var_51_arg_1=0, var_51_arg_2=0, var_53=1, var_53_arg_0=0, var_53_arg_1=0, var_54=1, var_54_arg_0=1, var_54_arg_1=1, var_54_arg_2=0, var_56=1, var_56_arg_0=1, var_57=0, var_58=0, var_58_arg_0=1, var_58_arg_1=0, var_59=5, var_59_arg_0=0, var_59_arg_1=2, var_59_arg_2=5, var_60=0, var_60_arg_0=0, var_60_arg_1=1, var_61=6, var_61_arg_0=0, var_61_arg_1=5, var_61_arg_2=6, var_63=1, var_63_arg_0=1, var_64=0, var_64_arg_0=1, var_64_arg_1=0, var_65=6, var_65_arg_0=0, var_65_arg_1=3, var_65_arg_2=6, var_66=0, var_66_arg_0=0, var_66_arg_1=2, var_67=6, var_67_arg_0=0, var_67_arg_1=6, var_67_arg_2=6, var_68=0, var_68_arg_0=0, var_68_arg_1=2, var_69=6, var_69_arg_0=0, var_69_arg_1=6, var_69_arg_2=6, var_70=0, var_70_arg_0=0, var_70_arg_1=1, var_71=0, var_71_arg_0=0, var_71_arg_1=0, var_72=1, var_72_arg_0=0, var_72_arg_1=6, var_72_arg_2=1, var_73=0, var_73_arg_0=0, var_73_arg_1=4, var_74=4, var_74_arg_0=0, var_74_arg_1=1, var_74_arg_2=4, var_76=1, var_76_arg_0=1, var_77=0, var_77_arg_0=1, var_77_arg_1=0, var_78=0, var_78_arg_0=0, var_78_arg_1=4, var_78_arg_2=0, var_79=0, var_79_arg_0=0, var_79_arg_1=6, var_80=6, var_80_arg_0=0, var_80_arg_1=0, var_80_arg_2=6, var_81=0, var_81_arg_0=0, var_81_arg_1=6, var_82=6, var_82_arg_0=0, var_82_arg_1=6, var_82_arg_2=6, var_83=0, var_83_arg_0=0, var_83_arg_1=5, var_84=0, var_84_arg_0=0, var_84_arg_1=0, var_85=4, var_85_arg_0=0, var_85_arg_1=6, var_85_arg_2=4, var_86=0, var_86_arg_0=0, var_86_arg_1=3, var_87=0, var_87_arg_0=0, var_87_arg_1=0, var_88=0, var_88_arg_0=0, var_88_arg_1=0, var_89=0, var_89_arg_0=0, var_8=0, var_8_arg_0=0, var_90=1, var_90_arg_0=0, var_90_arg_1=4, var_90_arg_2=1, var_9=1] [L65] input_2 = __VERIFIER_nondet_uchar() [L66] input_3 = __VERIFIER_nondet_uchar() [L67] input_55 = __VERIFIER_nondet_uchar() [L68] input_62 = __VERIFIER_nondet_uchar() [L69] input_75 = __VERIFIER_nondet_uchar() [L72] SORT_1 var_8_arg_0 = state_5; [L73] EXPR var_8_arg_0 & mask_SORT_1 [L73] var_8_arg_0 = var_8_arg_0 & mask_SORT_1 [L74] SORT_7 var_8 = var_8_arg_0; [L75] SORT_7 var_10_arg_0 = var_8; [L76] SORT_7 var_10_arg_1 = var_9; [L77] SORT_1 var_10 = var_10_arg_0 == var_10_arg_1; [L78] SORT_1 var_11_arg_0 = var_10; [L79] SORT_1 var_11 = ~var_11_arg_0; [L80] SORT_12 var_16_arg_0 = state_14; [L81] EXPR var_16_arg_0 & mask_SORT_12 [L81] var_16_arg_0 = var_16_arg_0 & mask_SORT_12 [L82] SORT_7 var_16 = var_16_arg_0; [L83] SORT_7 var_17_arg_0 = var_16; [L84] SORT_7 var_17_arg_1 = var_9; [L85] SORT_1 var_17 = var_17_arg_0 == var_17_arg_1; [L86] SORT_1 var_18_arg_0 = var_11; [L87] SORT_1 var_18_arg_1 = var_17; [L88] EXPR var_18_arg_0 | var_18_arg_1 [L88] SORT_1 var_18 = var_18_arg_0 | var_18_arg_1; [L89] SORT_1 var_22_arg_0 = var_18; [L90] SORT_1 var_22 = ~var_22_arg_0; [L91] SORT_1 var_23_arg_0 = var_21; [L92] SORT_1 var_23_arg_1 = var_22; [L93] EXPR var_23_arg_0 & var_23_arg_1 [L93] SORT_1 var_23 = var_23_arg_0 & var_23_arg_1; [L94] EXPR var_23 & mask_SORT_1 [L94] var_23 = var_23 & mask_SORT_1 [L95] SORT_1 bad_24_arg_0 = var_23; [L96] CALL __VERIFIER_assert(!(bad_24_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: 6.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10 IncrementalHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 2 mSDtfsCounter, 10 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 15 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2023-12-02 13:09:48,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, 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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/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_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/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 e188a971cba665e2b77b0e826b47d617ddf57bd12a8f8136f6d81bf903c7591b --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:09:50,970 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:09:51,049 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2023-12-02 13:09:51,055 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:09:51,056 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:09:51,087 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:09:51,088 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:09:51,088 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:09:51,089 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:09:51,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:09:51,090 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:09:51,091 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:09:51,092 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:09:51,092 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:09:51,093 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:09:51,093 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:09:51,095 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:09:51,095 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:09:51,096 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:09:51,096 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:09:51,097 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:09:51,098 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:09:51,098 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-12-02 13:09:51,099 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-12-02 13:09:51,099 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-12-02 13:09:51,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:09:51,100 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:09:51,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:09:51,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-02 13:09:51,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-02 13:09:51,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:09:51,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:09:51,103 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:09:51,103 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:09:51,103 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:09:51,104 INFO L153 SettingsManager]: * Trace refinement strategy=WALRUS [2023-12-02 13:09:51,104 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-12-02 13:09:51,104 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:09:51,104 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:09:51,105 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:09:51,105 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:09:51,105 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_ace68d45-0266-4bd8-9786-67026b82d72a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e188a971cba665e2b77b0e826b47d617ddf57bd12a8f8136f6d81bf903c7591b [2023-12-02 13:09:51,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:09:51,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:09:51,475 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:09:51,476 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:09:51,476 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:09:51,478 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2023-12-02 13:09:54,259 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:09:54,479 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:09:54,480 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c [2023-12-02 13:09:54,491 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/data/9e9f12665/93ad3aa76950459dbf73c680b6a9bb0e/FLAGda0db6ce8 [2023-12-02 13:09:54,506 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/data/9e9f12665/93ad3aa76950459dbf73c680b6a9bb0e [2023-12-02 13:09:54,508 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:09:54,510 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:09:54,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:09:54,512 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:09:54,517 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:09:54,518 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:54,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e52799 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54, skipping insertion in model container [2023-12-02 13:09:54,520 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:54,557 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:09:54,731 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_ace68d45-0266-4bd8-9786-67026b82d72a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1245,1258] [2023-12-02 13:09:54,821 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:09:54,837 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:09:54,852 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_ace68d45-0266-4bd8-9786-67026b82d72a/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.h_b02.c[1245,1258] [2023-12-02 13:09:54,908 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:09:54,925 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:09:54,926 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54 WrapperNode [2023-12-02 13:09:54,926 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:09:54,927 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:09:54,927 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:09:54,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:09:54,935 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:54,951 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:54,988 INFO L138 Inliner]: procedures = 17, calls = 16, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 293 [2023-12-02 13:09:54,988 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:09:54,989 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:09:54,990 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:09:54,990 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:09:55,000 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,000 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,020 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,021 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,057 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,061 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,064 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,067 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,073 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:09:55,074 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:09:55,075 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:09:55,075 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:09:55,076 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (1/1) ... [2023-12-02 13:09:55,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:09:55,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:09:55,106 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:09:55,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:09:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:09:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2023-12-02 13:09:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:09:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:09:55,272 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:09:55,275 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:09:55,586 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:09:55,624 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:09:55,624 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-02 13:09:55,625 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:55 BoogieIcfgContainer [2023-12-02 13:09:55,625 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:09:55,628 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:09:55,628 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:09:55,631 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:09:55,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:09:54" (1/3) ... [2023-12-02 13:09:55,632 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53df1faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:09:55, skipping insertion in model container [2023-12-02 13:09:55,632 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:09:54" (2/3) ... [2023-12-02 13:09:55,633 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53df1faf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:09:55, skipping insertion in model container [2023-12-02 13:09:55,633 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:09:55" (3/3) ... [2023-12-02 13:09:55,634 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.h_b02.c [2023-12-02 13:09:55,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:09:55,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-02 13:09:55,697 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:09:55,704 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;@927244d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:09:55,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-02 13:09:55,708 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) [2023-12-02 13:09:55,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-12-02 13:09:55,714 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:55,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-12-02 13:09:55,715 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:55,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:55,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1827279, now seen corresponding path program 1 times [2023-12-02 13:09:55,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:09:55,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365420880] [2023-12-02 13:09:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:55,733 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 [2023-12-02 13:09:55,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:09:55,734 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:09:55,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:09:55,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:55,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2023-12-02 13:09:55,879 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:09:56,100 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-02 13:09:56,101 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:09:56,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365420880] [2023-12-02 13:09:56,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365420880] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:09:56,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:09:56,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 13:09:56,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709558172] [2023-12-02 13:09:56,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:09:56,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-02 13:09:56,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:09:56,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-02 13:09:56,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-02 13:09:56,133 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) [2023-12-02 13:09:56,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:09:56,206 INFO L93 Difference]: Finished difference Result 16 states and 24 transitions. [2023-12-02 13:09:56,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-02 13:09:56,209 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 [2023-12-02 13:09:56,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:09:56,215 INFO L225 Difference]: With dead ends: 16 [2023-12-02 13:09:56,215 INFO L226 Difference]: Without dead ends: 9 [2023-12-02 13:09:56,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-02 13:09:56,221 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 3 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:09:56,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:09:56,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2023-12-02 13:09:56,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2023-12-02 13:09:56,245 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) [2023-12-02 13:09:56,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2023-12-02 13:09:56,246 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 4 [2023-12-02 13:09:56,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:09:56,247 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2023-12-02 13:09:56,247 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) [2023-12-02 13:09:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2023-12-02 13:09:56,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-12-02 13:09:56,247 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:09:56,247 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2023-12-02 13:09:56,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:09:56,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:09:56,449 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:09:56,449 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:09:56,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1393329571, now seen corresponding path program 1 times [2023-12-02 13:09:56,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:09:56,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643243148] [2023-12-02 13:09:56,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:09:56,451 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 [2023-12-02 13:09:56,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:09:56,452 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:09:56,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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 [2023-12-02 13:09:56,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:09:56,693 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 74 conjunts are in the unsatisfiable core [2023-12-02 13:09:56,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:09:57,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:09:57,646 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:10:30,325 WARN L293 SmtUtils]: Spent 10.88s on a formula simplification that was a NOOP. DAG size: 503 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:11:54,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:11:54,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2023-12-02 13:11:54,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643243148] [2023-12-02 13:11:54,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643243148] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:11:54,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1453764868] [2023-12-02 13:11:54,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:11:54,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2023-12-02 13:11:54,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/cvc4 [2023-12-02 13:11:54,055 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2023-12-02 13:11:54,056 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2023-12-02 13:11:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:11:54,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 88 conjunts are in the unsatisfiable core [2023-12-02 13:11:54,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:11:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:11:55,144 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:12:15,305 WARN L293 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 410 DAG size of output: 365 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-12-02 13:12:39,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:12:39,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1453764868] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:12:39,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212396521] [2023-12-02 13:12:39,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:12:39,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-02 13:12:39,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:12:39,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-02 13:12:39,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-02 13:12:39,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:12:39,335 INFO L262 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 68 conjunts are in the unsatisfiable core [2023-12-02 13:12:39,338 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:12:39,740 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:12:39,740 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:12:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:12:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212396521] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-02 13:12:41,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2023-12-02 13:12:41,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 5, 5] total 15 [2023-12-02 13:12:41,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372034284] [2023-12-02 13:12:41,224 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2023-12-02 13:12:41,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-02 13:12:41,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2023-12-02 13:12:41,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-02 13:12:41,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-12-02 13:12:41,227 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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) [2023-12-02 13:12:41,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:12:41,542 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2023-12-02 13:12:41,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-02 13:12:41,543 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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 7 [2023-12-02 13:12:41,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:12:41,544 INFO L225 Difference]: With dead ends: 14 [2023-12-02 13:12:41,544 INFO L226 Difference]: Without dead ends: 12 [2023-12-02 13:12:41,545 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 18.7s TimeCoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-02 13:12:41,546 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 13:12:41,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 20 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 13:12:41,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2023-12-02 13:12:41,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 11. [2023-12-02 13:12:41,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 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) [2023-12-02 13:12:41,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2023-12-02 13:12:41,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2023-12-02 13:12:41,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:12:41,551 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2023-12-02 13:12:41,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.9375) internal successors, (31), 15 states have internal predecessors, (31), 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) [2023-12-02 13:12:41,551 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2023-12-02 13:12:41,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-12-02 13:12:41,552 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:12:41,552 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2023-12-02 13:12:41,555 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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)] Ended with exit code 0 [2023-12-02 13:12:41,758 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-02 13:12:41,956 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2023-12-02 13:12:42,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/cvc4 --incremental --print-success --lang smt [2023-12-02 13:12:42,154 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-02 13:12:42,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:12:42,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2112524529, now seen corresponding path program 2 times [2023-12-02 13:12:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2023-12-02 13:12:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881649591] [2023-12-02 13:12:42,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-02 13:12:42,156 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 [2023-12-02 13:12:42,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/mathsat [2023-12-02 13:12:42,157 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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) [2023-12-02 13:12:42,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ace68d45-0266-4bd8-9786-67026b82d72a/bin/utaipan-verify-nQ1chXbOIh/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 (6)] Waiting until timeout for monitored process [2023-12-02 13:12:42,598 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-02 13:12:42,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-02 13:12:42,610 INFO L262 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 111 conjunts are in the unsatisfiable core [2023-12-02 13:12:42,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-02 13:12:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 13:12:43,279 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-02 13:22:06,172 WARN L293 SmtUtils]: Spent 3.99m on a formula simplification. DAG size of input: 3608 DAG size of output: 2556 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)